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 const u8 *mmie;
336
337 if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) == IWL_RX_MPDU_STATUS_SEC_NONE)
338 return 0;
339
340 /*
341 * For non-beacon, we don't really care. But beacons may
342 * be filtered out, and we thus need the firmware's replay
343 * detection, otherwise beacons the firmware previously
344 * filtered could be replayed, or something like that, and
345 * it can filter a lot - though usually only if nothing has
346 * changed.
347 */
348 if (!ieee80211_is_beacon(hdr->frame_control))
349 return 0;
350
351 if (!sta)
352 return -1;
353
354 mvmsta = iwl_mvm_sta_from_mac80211(sta);
355 mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
356
357 /* key mismatch - will also report !MIC_OK but we shouldn't count it */
358 if (!(status & IWL_RX_MPDU_STATUS_KEY_VALID))
359 goto report;
360
361 /* good cases */
362 if (likely(status & IWL_RX_MPDU_STATUS_MIC_OK &&
363 !(status & IWL_RX_MPDU_STATUS_REPLAY_ERROR))) {
364 stats->flag |= RX_FLAG_DECRYPTED;
365 return 0;
366 }
367
368 /*
369 * both keys will have the same cipher and MIC length, use
370 * whichever one is available
371 */
372 key = rcu_dereference(mvmvif->bcn_prot.keys[0]);
373 if (!key) {
374 key = rcu_dereference(mvmvif->bcn_prot.keys[1]);
375 if (!key)
376 goto report;
377 }
378
379 if (len < key->icv_len)
380 goto report;
381
382 /* get the real key ID */
383 mmie = frame + (len - key->icv_len);
384
385 /* the position of the key_id in ieee80211_mmie_16 is the same */
386 keyid = le16_to_cpu(((const struct ieee80211_mmie *) mmie)->key_id);
387
388 /* and if that's the other key, look it up */
389 if (keyid != key->keyidx) {
390 /*
391 * shouldn't happen since firmware checked, but be safe
392 * in case the MIC length is wrong too, for example
393 */
394 if (keyid != 6 && keyid != 7)
395 return -1;
396 key = rcu_dereference(mvmvif->bcn_prot.keys[keyid - 6]);
397 if (!key)
398 goto report;
399 }
400
401 /* Report status to mac80211 */
402 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
403 ieee80211_key_mic_failure(key);
404 else if (status & IWL_RX_MPDU_STATUS_REPLAY_ERROR)
405 ieee80211_key_replay(key);
406 report:
407 wdev = ieee80211_vif_to_wdev(mvmsta->vif);
408 if (wdev->netdev)
409 cfg80211_rx_unprot_mlme_mgmt(wdev->netdev, (void *)hdr, len);
410
411 return -1;
412 }
413
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)414 static int iwl_mvm_rx_crypto(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
415 struct ieee80211_hdr *hdr,
416 struct ieee80211_rx_status *stats, u16 phy_info,
417 struct iwl_rx_mpdu_desc *desc,
418 u32 pkt_flags, int queue, u8 *crypt_len)
419 {
420 u32 status = le32_to_cpu(desc->status);
421
422 /*
423 * Drop UNKNOWN frames in aggregation, unless in monitor mode
424 * (where we don't have the keys).
425 * We limit this to aggregation because in TKIP this is a valid
426 * scenario, since we may not have the (correct) TTAK (phase 1
427 * key) in the firmware.
428 */
429 if (phy_info & IWL_RX_MPDU_PHY_AMPDU &&
430 (status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
431 IWL_RX_MPDU_STATUS_SEC_UNKNOWN && !mvm->monitor_on) {
432 IWL_DEBUG_DROP(mvm, "Dropping packets, bad enc status\n");
433 return -1;
434 }
435
436 if (unlikely(ieee80211_is_mgmt(hdr->frame_control) &&
437 !ieee80211_has_protected(hdr->frame_control)))
438 return iwl_mvm_rx_mgmt_prot(sta, hdr, desc, status, stats);
439
440 if (!ieee80211_has_protected(hdr->frame_control) ||
441 (status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
442 IWL_RX_MPDU_STATUS_SEC_NONE)
443 return 0;
444
445 /* TODO: handle packets encrypted with unknown alg */
446
447 switch (status & IWL_RX_MPDU_STATUS_SEC_MASK) {
448 case IWL_RX_MPDU_STATUS_SEC_CCM:
449 case IWL_RX_MPDU_STATUS_SEC_GCM:
450 BUILD_BUG_ON(IEEE80211_CCMP_PN_LEN != IEEE80211_GCMP_PN_LEN);
451 /* alg is CCM: check MIC only */
452 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK)) {
453 IWL_DEBUG_DROP(mvm,
454 "Dropping packet, bad MIC (CCM/GCM)\n");
455 return -1;
456 }
457
458 stats->flag |= RX_FLAG_DECRYPTED | RX_FLAG_MIC_STRIPPED;
459 *crypt_len = IEEE80211_CCMP_HDR_LEN;
460 return 0;
461 case IWL_RX_MPDU_STATUS_SEC_TKIP:
462 /* Don't drop the frame and decrypt it in SW */
463 if (!fw_has_api(&mvm->fw->ucode_capa,
464 IWL_UCODE_TLV_API_DEPRECATE_TTAK) &&
465 !(status & IWL_RX_MPDU_RES_STATUS_TTAK_OK))
466 return 0;
467
468 if (mvm->trans->mac_cfg->gen2 &&
469 !(status & RX_MPDU_RES_STATUS_MIC_OK))
470 stats->flag |= RX_FLAG_MMIC_ERROR;
471
472 *crypt_len = IEEE80211_TKIP_IV_LEN;
473 fallthrough;
474 case IWL_RX_MPDU_STATUS_SEC_WEP:
475 if (!(status & IWL_RX_MPDU_STATUS_ICV_OK))
476 return -1;
477
478 stats->flag |= RX_FLAG_DECRYPTED;
479 if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
480 IWL_RX_MPDU_STATUS_SEC_WEP)
481 *crypt_len = IEEE80211_WEP_IV_LEN;
482
483 if (pkt_flags & FH_RSCSR_RADA_EN) {
484 stats->flag |= RX_FLAG_ICV_STRIPPED;
485 if (mvm->trans->mac_cfg->gen2)
486 stats->flag |= RX_FLAG_MMIC_STRIPPED;
487 }
488
489 return 0;
490 case IWL_RX_MPDU_STATUS_SEC_EXT_ENC:
491 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
492 return -1;
493 stats->flag |= RX_FLAG_DECRYPTED;
494 return 0;
495 case RX_MPDU_RES_STATUS_SEC_CMAC_GMAC_ENC:
496 break;
497 default:
498 /*
499 * Sometimes we can get frames that were not decrypted
500 * because the firmware didn't have the keys yet. This can
501 * happen after connection where we can get multicast frames
502 * before the GTK is installed.
503 * Silently drop those frames.
504 * Also drop un-decrypted frames in monitor mode.
505 */
506 if (!is_multicast_ether_addr(hdr->addr1) &&
507 !mvm->monitor_on && net_ratelimit())
508 IWL_WARN(mvm, "Unhandled alg: 0x%x\n", status);
509 }
510
511 return 0;
512 }
513
iwl_mvm_rx_csum(struct iwl_mvm * mvm,struct ieee80211_sta * sta,struct sk_buff * skb,struct iwl_rx_packet * pkt)514 static void iwl_mvm_rx_csum(struct iwl_mvm *mvm,
515 struct ieee80211_sta *sta,
516 struct sk_buff *skb,
517 struct iwl_rx_packet *pkt)
518 {
519 struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
520
521 if (mvm->trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
522 if (pkt->len_n_flags & cpu_to_le32(FH_RSCSR_RPA_EN)) {
523 u16 hwsum = be16_to_cpu(desc->v3.raw_xsum);
524
525 skb->ip_summed = CHECKSUM_COMPLETE;
526 skb->csum = csum_unfold(~(__force __sum16)hwsum);
527 }
528 } else {
529 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
530 struct iwl_mvm_vif *mvmvif;
531 u16 flags = le16_to_cpu(desc->l3l4_flags);
532 u8 l3_prot = (u8)((flags & IWL_RX_L3L4_L3_PROTO_MASK) >>
533 IWL_RX_L3_PROTO_POS);
534
535 mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
536
537 if (mvmvif->features & NETIF_F_RXCSUM &&
538 flags & IWL_RX_L3L4_TCP_UDP_CSUM_OK &&
539 (flags & IWL_RX_L3L4_IP_HDR_CSUM_OK ||
540 l3_prot == IWL_RX_L3_TYPE_IPV6 ||
541 l3_prot == IWL_RX_L3_TYPE_IPV6_FRAG))
542 skb->ip_summed = CHECKSUM_UNNECESSARY;
543 }
544 }
545
546 /*
547 * returns true if a packet is a duplicate or invalid tid and should be dropped.
548 * Updates AMSDU PN tracking info
549 */
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)550 static bool iwl_mvm_is_dup(struct ieee80211_sta *sta, int queue,
551 struct ieee80211_rx_status *rx_status,
552 struct ieee80211_hdr *hdr,
553 struct iwl_rx_mpdu_desc *desc)
554 {
555 struct iwl_mvm_sta *mvm_sta;
556 struct iwl_mvm_rxq_dup_data *dup_data;
557 u8 tid, sub_frame_idx;
558
559 if (WARN_ON(IS_ERR_OR_NULL(sta)))
560 return false;
561
562 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
563
564 if (WARN_ON_ONCE(!mvm_sta->dup_data))
565 return false;
566
567 dup_data = &mvm_sta->dup_data[queue];
568
569 /*
570 * Drop duplicate 802.11 retransmissions
571 * (IEEE 802.11-2012: 9.3.2.10 "Duplicate detection and recovery")
572 */
573 if (ieee80211_is_ctl(hdr->frame_control) ||
574 ieee80211_is_any_nullfunc(hdr->frame_control) ||
575 is_multicast_ether_addr(hdr->addr1))
576 return false;
577
578 if (ieee80211_is_data_qos(hdr->frame_control)) {
579 /* frame has qos control */
580 tid = ieee80211_get_tid(hdr);
581 if (tid >= IWL_MAX_TID_COUNT)
582 return true;
583 } else {
584 tid = IWL_MAX_TID_COUNT;
585 }
586
587 /* If this wasn't a part of an A-MSDU the sub-frame index will be 0 */
588 sub_frame_idx = desc->amsdu_info &
589 IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
590
591 if (unlikely(ieee80211_has_retry(hdr->frame_control) &&
592 dup_data->last_seq[tid] == hdr->seq_ctrl &&
593 dup_data->last_sub_frame[tid] >= sub_frame_idx))
594 return true;
595
596 /* Allow same PN as the first subframe for following sub frames */
597 if (dup_data->last_seq[tid] == hdr->seq_ctrl &&
598 sub_frame_idx > dup_data->last_sub_frame[tid] &&
599 desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU)
600 rx_status->flag |= RX_FLAG_ALLOW_SAME_PN;
601
602 dup_data->last_seq[tid] = hdr->seq_ctrl;
603 dup_data->last_sub_frame[tid] = sub_frame_idx;
604
605 rx_status->flag |= RX_FLAG_DUP_VALIDATED;
606
607 return false;
608 }
609
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)610 static void iwl_mvm_release_frames(struct iwl_mvm *mvm,
611 struct ieee80211_sta *sta,
612 struct napi_struct *napi,
613 struct iwl_mvm_baid_data *baid_data,
614 struct iwl_mvm_reorder_buffer *reorder_buf,
615 u16 nssn)
616 {
617 struct iwl_mvm_reorder_buf_entry *entries =
618 &baid_data->entries[reorder_buf->queue *
619 baid_data->entries_per_queue];
620 u16 ssn = reorder_buf->head_sn;
621
622 lockdep_assert_held(&reorder_buf->lock);
623
624 while (ieee80211_sn_less(ssn, nssn)) {
625 int index = ssn % baid_data->buf_size;
626 struct sk_buff_head *skb_list = &entries[index].frames;
627 struct sk_buff *skb;
628
629 ssn = ieee80211_sn_inc(ssn);
630
631 /*
632 * Empty the list. Will have more than one frame for A-MSDU.
633 * Empty list is valid as well since nssn indicates frames were
634 * received.
635 */
636 while ((skb = __skb_dequeue(skb_list))) {
637 iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb,
638 reorder_buf->queue,
639 sta);
640 reorder_buf->num_stored--;
641 }
642 }
643 reorder_buf->head_sn = nssn;
644 }
645
iwl_mvm_del_ba(struct iwl_mvm * mvm,int queue,struct iwl_mvm_delba_data * data)646 static void iwl_mvm_del_ba(struct iwl_mvm *mvm, int queue,
647 struct iwl_mvm_delba_data *data)
648 {
649 struct iwl_mvm_baid_data *ba_data;
650 struct ieee80211_sta *sta;
651 struct iwl_mvm_reorder_buffer *reorder_buf;
652 u8 baid = data->baid;
653 u32 sta_id;
654
655 if (WARN_ONCE(baid >= IWL_MAX_BAID, "invalid BAID: %x\n", baid))
656 return;
657
658 rcu_read_lock();
659
660 ba_data = rcu_dereference(mvm->baid_map[baid]);
661 if (WARN_ON_ONCE(!ba_data))
662 goto out;
663
664 /* pick any STA ID to find the pointer */
665 sta_id = ffs(ba_data->sta_mask) - 1;
666 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
667 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
668 goto out;
669
670 reorder_buf = &ba_data->reorder_buf[queue];
671
672 /* release all frames that are in the reorder buffer to the stack */
673 spin_lock_bh(&reorder_buf->lock);
674 iwl_mvm_release_frames(mvm, sta, NULL, ba_data, reorder_buf,
675 ieee80211_sn_add(reorder_buf->head_sn,
676 ba_data->buf_size));
677 spin_unlock_bh(&reorder_buf->lock);
678
679 out:
680 rcu_read_unlock();
681 }
682
iwl_mvm_release_frames_from_notif(struct iwl_mvm * mvm,struct napi_struct * napi,u8 baid,u16 nssn,int queue)683 static void iwl_mvm_release_frames_from_notif(struct iwl_mvm *mvm,
684 struct napi_struct *napi,
685 u8 baid, u16 nssn, int queue)
686 {
687 struct ieee80211_sta *sta;
688 struct iwl_mvm_reorder_buffer *reorder_buf;
689 struct iwl_mvm_baid_data *ba_data;
690 u32 sta_id;
691
692 IWL_DEBUG_HT(mvm, "Frame release notification for BAID %u, NSSN %d\n",
693 baid, nssn);
694
695 if (IWL_FW_CHECK(mvm,
696 baid == IWL_RX_REORDER_DATA_INVALID_BAID ||
697 baid >= ARRAY_SIZE(mvm->baid_map),
698 "invalid BAID from FW: %d\n", baid))
699 return;
700
701 rcu_read_lock();
702
703 ba_data = rcu_dereference(mvm->baid_map[baid]);
704 if (!ba_data) {
705 IWL_DEBUG_RX(mvm,
706 "Got valid BAID %d but not allocated, invalid frame release!\n",
707 baid);
708 goto out;
709 }
710
711 /* pick any STA ID to find the pointer */
712 sta_id = ffs(ba_data->sta_mask) - 1;
713 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
714 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
715 goto out;
716
717 reorder_buf = &ba_data->reorder_buf[queue];
718
719 spin_lock_bh(&reorder_buf->lock);
720 iwl_mvm_release_frames(mvm, sta, napi, ba_data,
721 reorder_buf, nssn);
722 spin_unlock_bh(&reorder_buf->lock);
723
724 out:
725 rcu_read_unlock();
726 }
727
iwl_mvm_rx_queue_notif(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)728 void iwl_mvm_rx_queue_notif(struct iwl_mvm *mvm, struct napi_struct *napi,
729 struct iwl_rx_cmd_buffer *rxb, int queue)
730 {
731 struct iwl_rx_packet *pkt = rxb_addr(rxb);
732 struct iwl_rxq_sync_notification *notif;
733 struct iwl_mvm_internal_rxq_notif *internal_notif;
734 u32 len = iwl_rx_packet_payload_len(pkt);
735
736 notif = (void *)pkt->data;
737 internal_notif = (void *)notif->payload;
738
739 if (WARN_ONCE(len < sizeof(*notif) + sizeof(*internal_notif),
740 "invalid notification size %d (%d)",
741 len, (int)(sizeof(*notif) + sizeof(*internal_notif))))
742 return;
743 len -= sizeof(*notif) + sizeof(*internal_notif);
744
745 if (WARN_ONCE(internal_notif->sync &&
746 mvm->queue_sync_cookie != internal_notif->cookie,
747 "Received expired RX queue sync message (cookie %d but wanted %d, queue %d)\n",
748 internal_notif->cookie, mvm->queue_sync_cookie, queue))
749 return;
750
751 switch (internal_notif->type) {
752 case IWL_MVM_RXQ_EMPTY:
753 WARN_ONCE(len, "invalid empty notification size %d", len);
754 break;
755 case IWL_MVM_RXQ_NOTIF_DEL_BA:
756 if (WARN_ONCE(len != sizeof(struct iwl_mvm_delba_data),
757 "invalid delba notification size %d (%d)",
758 len, (int)sizeof(struct iwl_mvm_delba_data)))
759 break;
760 iwl_mvm_del_ba(mvm, queue, (void *)internal_notif->data);
761 break;
762 default:
763 WARN_ONCE(1, "Invalid identifier %d", internal_notif->type);
764 }
765
766 if (internal_notif->sync) {
767 WARN_ONCE(!test_and_clear_bit(queue, &mvm->queue_sync_state),
768 "queue sync: queue %d responded a second time!\n",
769 queue);
770 if (READ_ONCE(mvm->queue_sync_state) == 0)
771 wake_up(&mvm->rx_sync_waitq);
772 }
773 }
774
775 /*
776 * Returns true if the MPDU was buffered\dropped, false if it should be passed
777 * to upper layer.
778 */
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)779 static bool iwl_mvm_reorder(struct iwl_mvm *mvm,
780 struct napi_struct *napi,
781 int queue,
782 struct ieee80211_sta *sta,
783 struct sk_buff *skb,
784 struct iwl_rx_mpdu_desc *desc)
785 {
786 struct ieee80211_hdr *hdr = (void *)skb_mac_header(skb);
787 struct iwl_mvm_baid_data *baid_data;
788 struct iwl_mvm_reorder_buffer *buffer;
789 u32 reorder = le32_to_cpu(desc->reorder_data);
790 bool amsdu = desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU;
791 bool last_subframe =
792 desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME;
793 u8 tid = ieee80211_get_tid(hdr);
794 struct iwl_mvm_reorder_buf_entry *entries;
795 u32 sta_mask;
796 int index;
797 u16 nssn, sn;
798 u8 baid;
799
800 baid = (reorder & IWL_RX_MPDU_REORDER_BAID_MASK) >>
801 IWL_RX_MPDU_REORDER_BAID_SHIFT;
802
803 if (mvm->trans->mac_cfg->device_family == IWL_DEVICE_FAMILY_9000)
804 return false;
805
806 /*
807 * This also covers the case of receiving a Block Ack Request
808 * outside a BA session; we'll pass it to mac80211 and that
809 * then sends a delBA action frame.
810 * This also covers pure monitor mode, in which case we won't
811 * have any BA sessions.
812 */
813 if (baid == IWL_RX_REORDER_DATA_INVALID_BAID)
814 return false;
815
816 /* no sta yet */
817 if (WARN_ONCE(IS_ERR_OR_NULL(sta),
818 "Got valid BAID without a valid station assigned\n"))
819 return false;
820
821 /* not a data packet or a bar */
822 if (!ieee80211_is_back_req(hdr->frame_control) &&
823 (!ieee80211_is_data_qos(hdr->frame_control) ||
824 is_multicast_ether_addr(hdr->addr1)))
825 return false;
826
827 if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
828 return false;
829
830 baid_data = rcu_dereference(mvm->baid_map[baid]);
831 if (!baid_data) {
832 IWL_DEBUG_RX(mvm,
833 "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
834 baid, reorder);
835 return false;
836 }
837
838 sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1);
839
840 if (IWL_FW_CHECK(mvm,
841 tid != baid_data->tid ||
842 !(sta_mask & baid_data->sta_mask),
843 "baid 0x%x is mapped to sta_mask:0x%x tid:%d, but was received for sta_mask:0x%x tid:%d\n",
844 baid, baid_data->sta_mask, baid_data->tid,
845 sta_mask, tid))
846 return false;
847
848 nssn = reorder & IWL_RX_MPDU_REORDER_NSSN_MASK;
849 sn = (reorder & IWL_RX_MPDU_REORDER_SN_MASK) >>
850 IWL_RX_MPDU_REORDER_SN_SHIFT;
851
852 buffer = &baid_data->reorder_buf[queue];
853 entries = &baid_data->entries[queue * baid_data->entries_per_queue];
854
855 spin_lock_bh(&buffer->lock);
856
857 if (!buffer->valid) {
858 if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN) {
859 spin_unlock_bh(&buffer->lock);
860 return false;
861 }
862 buffer->valid = true;
863 }
864
865 /* drop any duplicated packets */
866 if (desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_DUPLICATE))
867 goto drop;
868
869 /* drop any oudated packets */
870 if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN)
871 goto drop;
872
873 /* release immediately if allowed by nssn and no stored frames */
874 if (!buffer->num_stored && ieee80211_sn_less(sn, nssn)) {
875 if (!amsdu || last_subframe)
876 buffer->head_sn = nssn;
877
878 spin_unlock_bh(&buffer->lock);
879 return false;
880 }
881
882 /*
883 * release immediately if there are no stored frames, and the sn is
884 * equal to the head.
885 * This can happen due to reorder timer, where NSSN is behind head_sn.
886 * When we released everything, and we got the next frame in the
887 * sequence, according to the NSSN we can't release immediately,
888 * while technically there is no hole and we can move forward.
889 */
890 if (!buffer->num_stored && sn == buffer->head_sn) {
891 if (!amsdu || last_subframe)
892 buffer->head_sn = ieee80211_sn_inc(buffer->head_sn);
893
894 spin_unlock_bh(&buffer->lock);
895 return false;
896 }
897
898 /* put in reorder buffer */
899 index = sn % baid_data->buf_size;
900 __skb_queue_tail(&entries[index].frames, skb);
901 buffer->num_stored++;
902
903 /*
904 * We cannot trust NSSN for AMSDU sub-frames that are not the last.
905 * The reason is that NSSN advances on the first sub-frame, and may
906 * cause the reorder buffer to advance before all the sub-frames arrive.
907 * Example: reorder buffer contains SN 0 & 2, and we receive AMSDU with
908 * SN 1. NSSN for first sub frame will be 3 with the result of driver
909 * releasing SN 0,1, 2. When sub-frame 1 arrives - reorder buffer is
910 * already ahead and it will be dropped.
911 * If the last sub-frame is not on this queue - we will get frame
912 * release notification with up to date NSSN.
913 * If this is the first frame that is stored in the buffer, the head_sn
914 * may be outdated. Update it based on the last NSSN to make sure it
915 * will be released when the frame release notification arrives.
916 */
917 if (!amsdu || last_subframe)
918 iwl_mvm_release_frames(mvm, sta, napi, baid_data,
919 buffer, nssn);
920 else if (buffer->num_stored == 1)
921 buffer->head_sn = nssn;
922
923 spin_unlock_bh(&buffer->lock);
924 return true;
925
926 drop:
927 kfree_skb(skb);
928 spin_unlock_bh(&buffer->lock);
929 return true;
930 }
931
iwl_mvm_agg_rx_received(struct iwl_mvm * mvm,u32 reorder_data,u8 baid)932 static void iwl_mvm_agg_rx_received(struct iwl_mvm *mvm,
933 u32 reorder_data, u8 baid)
934 {
935 unsigned long now = jiffies;
936 unsigned long timeout;
937 struct iwl_mvm_baid_data *data;
938
939 rcu_read_lock();
940
941 data = rcu_dereference(mvm->baid_map[baid]);
942 if (!data) {
943 IWL_DEBUG_RX(mvm,
944 "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
945 baid, reorder_data);
946 goto out;
947 }
948
949 if (!data->timeout)
950 goto out;
951
952 timeout = data->timeout;
953 /*
954 * Do not update last rx all the time to avoid cache bouncing
955 * between the rx queues.
956 * Update it every timeout. Worst case is the session will
957 * expire after ~ 2 * timeout, which doesn't matter that much.
958 */
959 if (time_before(data->last_rx + TU_TO_JIFFIES(timeout), now))
960 /* Update is atomic */
961 data->last_rx = now;
962
963 out:
964 rcu_read_unlock();
965 }
966
iwl_mvm_flip_address(u8 * addr)967 static void iwl_mvm_flip_address(u8 *addr)
968 {
969 int i;
970 u8 mac_addr[ETH_ALEN];
971
972 for (i = 0; i < ETH_ALEN; i++)
973 mac_addr[i] = addr[ETH_ALEN - i - 1];
974 ether_addr_copy(addr, mac_addr);
975 }
976
977 struct iwl_mvm_rx_phy_data {
978 enum iwl_rx_phy_info_type info_type;
979 __le32 d0, d1, d2, d3, eht_d4, d5;
980 __le16 d4;
981 bool with_data;
982 bool first_subframe;
983 __le32 rx_vec[4];
984
985 u32 rate_n_flags;
986 u32 gp2_on_air_rise;
987 u16 phy_info;
988 u8 energy_a, energy_b;
989 u8 channel;
990 };
991
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)992 static void iwl_mvm_decode_he_mu_ext(struct iwl_mvm *mvm,
993 struct iwl_mvm_rx_phy_data *phy_data,
994 struct ieee80211_radiotap_he_mu *he_mu)
995 {
996 u32 phy_data2 = le32_to_cpu(phy_data->d2);
997 u32 phy_data3 = le32_to_cpu(phy_data->d3);
998 u16 phy_data4 = le16_to_cpu(phy_data->d4);
999 u32 rate_n_flags = phy_data->rate_n_flags;
1000
1001 if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CRC_OK, phy_data4)) {
1002 he_mu->flags1 |=
1003 cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_RU_KNOWN |
1004 IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU_KNOWN);
1005
1006 he_mu->flags1 |=
1007 le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CTR_RU,
1008 phy_data4),
1009 IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU);
1010
1011 he_mu->ru_ch1[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU0,
1012 phy_data2);
1013 he_mu->ru_ch1[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU1,
1014 phy_data3);
1015 he_mu->ru_ch1[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU2,
1016 phy_data2);
1017 he_mu->ru_ch1[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU3,
1018 phy_data3);
1019 }
1020
1021 if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CRC_OK, phy_data4) &&
1022 (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) != RATE_MCS_CHAN_WIDTH_20) {
1023 he_mu->flags1 |=
1024 cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_RU_KNOWN |
1025 IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_CTR_26T_RU_KNOWN);
1026
1027 he_mu->flags2 |=
1028 le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CTR_RU,
1029 phy_data4),
1030 IEEE80211_RADIOTAP_HE_MU_FLAGS2_CH2_CTR_26T_RU);
1031
1032 he_mu->ru_ch2[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU0,
1033 phy_data2);
1034 he_mu->ru_ch2[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU1,
1035 phy_data3);
1036 he_mu->ru_ch2[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU2,
1037 phy_data2);
1038 he_mu->ru_ch2[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU3,
1039 phy_data3);
1040 }
1041 }
1042
1043 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)1044 iwl_mvm_decode_he_phy_ru_alloc(struct iwl_mvm_rx_phy_data *phy_data,
1045 struct ieee80211_radiotap_he *he,
1046 struct ieee80211_radiotap_he_mu *he_mu,
1047 struct ieee80211_rx_status *rx_status)
1048 {
1049 /*
1050 * Unfortunately, we have to leave the mac80211 data
1051 * incorrect for the case that we receive an HE-MU
1052 * transmission and *don't* have the HE phy data (due
1053 * to the bits being used for TSF). This shouldn't
1054 * happen though as management frames where we need
1055 * the TSF/timers are not be transmitted in HE-MU.
1056 */
1057 u8 ru = le32_get_bits(phy_data->d1, IWL_RX_PHY_DATA1_HE_RU_ALLOC_MASK);
1058 u32 rate_n_flags = phy_data->rate_n_flags;
1059 u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1060 u8 offs = 0;
1061
1062 rx_status->bw = RATE_INFO_BW_HE_RU;
1063
1064 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
1065
1066 switch (ru) {
1067 case 0 ... 36:
1068 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26;
1069 offs = ru;
1070 break;
1071 case 37 ... 52:
1072 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52;
1073 offs = ru - 37;
1074 break;
1075 case 53 ... 60:
1076 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
1077 offs = ru - 53;
1078 break;
1079 case 61 ... 64:
1080 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242;
1081 offs = ru - 61;
1082 break;
1083 case 65 ... 66:
1084 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484;
1085 offs = ru - 65;
1086 break;
1087 case 67:
1088 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996;
1089 break;
1090 case 68:
1091 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996;
1092 break;
1093 }
1094 he->data2 |= le16_encode_bits(offs,
1095 IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET);
1096 he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_KNOWN |
1097 IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET_KNOWN);
1098 if (phy_data->d1 & cpu_to_le32(IWL_RX_PHY_DATA1_HE_RU_ALLOC_SEC80))
1099 he->data2 |=
1100 cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_SEC);
1101
1102 #define CHECK_BW(bw) \
1103 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_ ## bw ## MHZ != \
1104 RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS); \
1105 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_ ## bw ## MHZ != \
1106 RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS)
1107 CHECK_BW(20);
1108 CHECK_BW(40);
1109 CHECK_BW(80);
1110 CHECK_BW(160);
1111
1112 if (he_mu)
1113 he_mu->flags2 |=
1114 le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK,
1115 rate_n_flags),
1116 IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW);
1117 else if (he_type == RATE_MCS_HE_TYPE_TRIG)
1118 he->data6 |=
1119 cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_KNOWN) |
1120 le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK,
1121 rate_n_flags),
1122 IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW);
1123 }
1124
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)1125 static void iwl_mvm_decode_he_phy_data(struct iwl_mvm *mvm,
1126 struct iwl_mvm_rx_phy_data *phy_data,
1127 struct ieee80211_radiotap_he *he,
1128 struct ieee80211_radiotap_he_mu *he_mu,
1129 struct ieee80211_rx_status *rx_status,
1130 int queue)
1131 {
1132 switch (phy_data->info_type) {
1133 case IWL_RX_PHY_INFO_TYPE_NONE:
1134 case IWL_RX_PHY_INFO_TYPE_CCK:
1135 case IWL_RX_PHY_INFO_TYPE_OFDM_LGCY:
1136 case IWL_RX_PHY_INFO_TYPE_HT:
1137 case IWL_RX_PHY_INFO_TYPE_VHT_SU:
1138 case IWL_RX_PHY_INFO_TYPE_VHT_MU:
1139 case IWL_RX_PHY_INFO_TYPE_EHT_MU:
1140 case IWL_RX_PHY_INFO_TYPE_EHT_TB:
1141 case IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT:
1142 case IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT:
1143 return;
1144 case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1145 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN |
1146 IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE2_KNOWN |
1147 IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE3_KNOWN |
1148 IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE4_KNOWN);
1149 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1150 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE1),
1151 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE1);
1152 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1153 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE2),
1154 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE2);
1155 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1156 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE3),
1157 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE3);
1158 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1159 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE4),
1160 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE4);
1161 fallthrough;
1162 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1163 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1164 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1165 case IWL_RX_PHY_INFO_TYPE_HE_TB:
1166 /* HE common */
1167 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_LDPC_XSYMSEG_KNOWN |
1168 IEEE80211_RADIOTAP_HE_DATA1_DOPPLER_KNOWN |
1169 IEEE80211_RADIOTAP_HE_DATA1_BSS_COLOR_KNOWN);
1170 he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRE_FEC_PAD_KNOWN |
1171 IEEE80211_RADIOTAP_HE_DATA2_PE_DISAMBIG_KNOWN |
1172 IEEE80211_RADIOTAP_HE_DATA2_TXOP_KNOWN |
1173 IEEE80211_RADIOTAP_HE_DATA2_NUM_LTF_SYMS_KNOWN);
1174 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1175 IWL_RX_PHY_DATA0_HE_BSS_COLOR_MASK),
1176 IEEE80211_RADIOTAP_HE_DATA3_BSS_COLOR);
1177 if (phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB &&
1178 phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB_EXT) {
1179 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_UL_DL_KNOWN);
1180 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1181 IWL_RX_PHY_DATA0_HE_UPLINK),
1182 IEEE80211_RADIOTAP_HE_DATA3_UL_DL);
1183 }
1184 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1185 IWL_RX_PHY_DATA0_HE_LDPC_EXT_SYM),
1186 IEEE80211_RADIOTAP_HE_DATA3_LDPC_XSYMSEG);
1187 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1188 IWL_RX_PHY_DATA0_HE_PRE_FEC_PAD_MASK),
1189 IEEE80211_RADIOTAP_HE_DATA5_PRE_FEC_PAD);
1190 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1191 IWL_RX_PHY_DATA0_HE_PE_DISAMBIG),
1192 IEEE80211_RADIOTAP_HE_DATA5_PE_DISAMBIG);
1193 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d1,
1194 IWL_RX_PHY_DATA1_HE_LTF_NUM_MASK),
1195 IEEE80211_RADIOTAP_HE_DATA5_NUM_LTF_SYMS);
1196 he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1197 IWL_RX_PHY_DATA0_HE_TXOP_DUR_MASK),
1198 IEEE80211_RADIOTAP_HE_DATA6_TXOP);
1199 he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1200 IWL_RX_PHY_DATA0_HE_DOPPLER),
1201 IEEE80211_RADIOTAP_HE_DATA6_DOPPLER);
1202 break;
1203 }
1204
1205 switch (phy_data->info_type) {
1206 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1207 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1208 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1209 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN);
1210 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1211 IWL_RX_PHY_DATA0_HE_SPATIAL_REUSE_MASK),
1212 IEEE80211_RADIOTAP_HE_DATA4_SU_MU_SPTL_REUSE);
1213 break;
1214 default:
1215 /* nothing here */
1216 break;
1217 }
1218
1219 switch (phy_data->info_type) {
1220 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1221 he_mu->flags1 |=
1222 le16_encode_bits(le16_get_bits(phy_data->d4,
1223 IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_DCM),
1224 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM);
1225 he_mu->flags1 |=
1226 le16_encode_bits(le16_get_bits(phy_data->d4,
1227 IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_MCS_MASK),
1228 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS);
1229 he_mu->flags2 |=
1230 le16_encode_bits(le16_get_bits(phy_data->d4,
1231 IWL_RX_PHY_DATA4_HE_MU_EXT_PREAMBLE_PUNC_TYPE_MASK),
1232 IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW);
1233 iwl_mvm_decode_he_mu_ext(mvm, phy_data, he_mu);
1234 fallthrough;
1235 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1236 he_mu->flags2 |=
1237 le16_encode_bits(le32_get_bits(phy_data->d1,
1238 IWL_RX_PHY_DATA1_HE_MU_SIBG_SYM_OR_USER_NUM_MASK),
1239 IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_SYMS_USERS);
1240 he_mu->flags2 |=
1241 le16_encode_bits(le32_get_bits(phy_data->d1,
1242 IWL_RX_PHY_DATA1_HE_MU_SIGB_COMPRESSION),
1243 IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_COMP);
1244 fallthrough;
1245 case IWL_RX_PHY_INFO_TYPE_HE_TB:
1246 case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1247 iwl_mvm_decode_he_phy_ru_alloc(phy_data, he, he_mu, rx_status);
1248 break;
1249 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1250 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BEAM_CHANGE_KNOWN);
1251 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1252 IWL_RX_PHY_DATA0_HE_BEAM_CHNG),
1253 IEEE80211_RADIOTAP_HE_DATA3_BEAM_CHANGE);
1254 break;
1255 default:
1256 /* nothing */
1257 break;
1258 }
1259 }
1260
1261 #define LE32_DEC_ENC(value, dec_bits, enc_bits) \
1262 le32_encode_bits(le32_get_bits(value, dec_bits), enc_bits)
1263
1264 #define IWL_MVM_ENC_USIG_VALUE_MASK(usig, in_value, dec_bits, enc_bits) do { \
1265 typeof(enc_bits) _enc_bits = enc_bits; \
1266 typeof(usig) _usig = usig; \
1267 (_usig)->mask |= cpu_to_le32(_enc_bits); \
1268 (_usig)->value |= LE32_DEC_ENC(in_value, dec_bits, _enc_bits); \
1269 } while (0)
1270
1271 #define __IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru) \
1272 eht->data[(rt_data)] |= \
1273 (cpu_to_le32 \
1274 (IEEE80211_RADIOTAP_EHT_DATA ## rt_data ## _RU_ALLOC_CC_ ## rt_ru ## _KNOWN) | \
1275 LE32_DEC_ENC(data ## fw_data, \
1276 IWL_RX_PHY_DATA ## fw_data ## _EHT_MU_EXT_RU_ALLOC_ ## fw_ru, \
1277 IEEE80211_RADIOTAP_EHT_DATA ## rt_data ## _RU_ALLOC_CC_ ## rt_ru))
1278
1279 #define _IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru) \
1280 __IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru)
1281
1282 #define IEEE80211_RADIOTAP_RU_DATA_1_1_1 1
1283 #define IEEE80211_RADIOTAP_RU_DATA_2_1_1 2
1284 #define IEEE80211_RADIOTAP_RU_DATA_1_1_2 2
1285 #define IEEE80211_RADIOTAP_RU_DATA_2_1_2 2
1286 #define IEEE80211_RADIOTAP_RU_DATA_1_2_1 3
1287 #define IEEE80211_RADIOTAP_RU_DATA_2_2_1 3
1288 #define IEEE80211_RADIOTAP_RU_DATA_1_2_2 3
1289 #define IEEE80211_RADIOTAP_RU_DATA_2_2_2 4
1290
1291 #define IWL_RX_RU_DATA_A1 2
1292 #define IWL_RX_RU_DATA_A2 2
1293 #define IWL_RX_RU_DATA_B1 2
1294 #define IWL_RX_RU_DATA_B2 4
1295 #define IWL_RX_RU_DATA_C1 3
1296 #define IWL_RX_RU_DATA_C2 3
1297 #define IWL_RX_RU_DATA_D1 4
1298 #define IWL_RX_RU_DATA_D2 4
1299
1300 #define IWL_MVM_ENC_EHT_RU(rt_ru, fw_ru) \
1301 _IWL_MVM_ENC_EHT_RU(IEEE80211_RADIOTAP_RU_DATA_ ## rt_ru, \
1302 rt_ru, \
1303 IWL_RX_RU_DATA_ ## fw_ru, \
1304 fw_ru)
1305
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)1306 static void iwl_mvm_decode_eht_ext_mu(struct iwl_mvm *mvm,
1307 struct iwl_mvm_rx_phy_data *phy_data,
1308 struct ieee80211_rx_status *rx_status,
1309 struct ieee80211_radiotap_eht *eht,
1310 struct ieee80211_radiotap_eht_usig *usig)
1311 {
1312 if (phy_data->with_data) {
1313 __le32 data1 = phy_data->d1;
1314 __le32 data2 = phy_data->d2;
1315 __le32 data3 = phy_data->d3;
1316 __le32 data4 = phy_data->eht_d4;
1317 __le32 data5 = phy_data->d5;
1318 u32 phy_bw = phy_data->rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK;
1319
1320 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1321 IWL_RX_PHY_DATA5_EHT_TYPE_AND_COMP,
1322 IEEE80211_RADIOTAP_EHT_USIG2_MU_B0_B1_PPDU_TYPE);
1323 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1324 IWL_RX_PHY_DATA5_EHT_MU_PUNC_CH_CODE,
1325 IEEE80211_RADIOTAP_EHT_USIG2_MU_B3_B7_PUNCTURED_INFO);
1326 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data4,
1327 IWL_RX_PHY_DATA4_EHT_MU_EXT_SIGB_MCS,
1328 IEEE80211_RADIOTAP_EHT_USIG2_MU_B9_B10_SIG_MCS);
1329 IWL_MVM_ENC_USIG_VALUE_MASK
1330 (usig, data1, IWL_RX_PHY_DATA1_EHT_MU_NUM_SIG_SYM_USIGA2,
1331 IEEE80211_RADIOTAP_EHT_USIG2_MU_B11_B15_EHT_SIG_SYMBOLS);
1332
1333 eht->user_info[0] |=
1334 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_STA_ID_KNOWN) |
1335 LE32_DEC_ENC(data5, IWL_RX_PHY_DATA5_EHT_MU_STA_ID_USR,
1336 IEEE80211_RADIOTAP_EHT_USER_INFO_STA_ID);
1337
1338 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_NR_NON_OFDMA_USERS_M);
1339 eht->data[7] |= LE32_DEC_ENC
1340 (data5, IWL_RX_PHY_DATA5_EHT_MU_NUM_USR_NON_OFDMA,
1341 IEEE80211_RADIOTAP_EHT_DATA7_NUM_OF_NON_OFDMA_USERS);
1342
1343 /*
1344 * Hardware labels the content channels/RU allocation values
1345 * as follows:
1346 * Content Channel 1 Content Channel 2
1347 * 20 MHz: A1
1348 * 40 MHz: A1 B1
1349 * 80 MHz: A1 C1 B1 D1
1350 * 160 MHz: A1 C1 A2 C2 B1 D1 B2 D2
1351 * 320 MHz: A1 C1 A2 C2 A3 C3 A4 C4 B1 D1 B2 D2 B3 D3 B4 D4
1352 *
1353 * However firmware can only give us A1-D2, so the higher
1354 * frequencies are missing.
1355 */
1356
1357 switch (phy_bw) {
1358 case RATE_MCS_CHAN_WIDTH_320:
1359 /* additional values are missing in RX metadata */
1360 case RATE_MCS_CHAN_WIDTH_160:
1361 /* content channel 1 */
1362 IWL_MVM_ENC_EHT_RU(1_2_1, A2);
1363 IWL_MVM_ENC_EHT_RU(1_2_2, C2);
1364 /* content channel 2 */
1365 IWL_MVM_ENC_EHT_RU(2_2_1, B2);
1366 IWL_MVM_ENC_EHT_RU(2_2_2, D2);
1367 fallthrough;
1368 case RATE_MCS_CHAN_WIDTH_80:
1369 /* content channel 1 */
1370 IWL_MVM_ENC_EHT_RU(1_1_2, C1);
1371 /* content channel 2 */
1372 IWL_MVM_ENC_EHT_RU(2_1_2, D1);
1373 fallthrough;
1374 case RATE_MCS_CHAN_WIDTH_40:
1375 /* content channel 2 */
1376 IWL_MVM_ENC_EHT_RU(2_1_1, B1);
1377 fallthrough;
1378 case RATE_MCS_CHAN_WIDTH_20:
1379 IWL_MVM_ENC_EHT_RU(1_1_1, A1);
1380 break;
1381 }
1382 } else {
1383 __le32 usig_a1 = phy_data->rx_vec[0];
1384 __le32 usig_a2 = phy_data->rx_vec[1];
1385
1386 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
1387 IWL_RX_USIG_A1_DISREGARD,
1388 IEEE80211_RADIOTAP_EHT_USIG1_MU_B20_B24_DISREGARD);
1389 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
1390 IWL_RX_USIG_A1_VALIDATE,
1391 IEEE80211_RADIOTAP_EHT_USIG1_MU_B25_VALIDATE);
1392 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1393 IWL_RX_USIG_A2_EHT_PPDU_TYPE,
1394 IEEE80211_RADIOTAP_EHT_USIG2_MU_B0_B1_PPDU_TYPE);
1395 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1396 IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B2,
1397 IEEE80211_RADIOTAP_EHT_USIG2_MU_B2_VALIDATE);
1398 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1399 IWL_RX_USIG_A2_EHT_PUNC_CHANNEL,
1400 IEEE80211_RADIOTAP_EHT_USIG2_MU_B3_B7_PUNCTURED_INFO);
1401 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1402 IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B8,
1403 IEEE80211_RADIOTAP_EHT_USIG2_MU_B8_VALIDATE);
1404 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1405 IWL_RX_USIG_A2_EHT_SIG_MCS,
1406 IEEE80211_RADIOTAP_EHT_USIG2_MU_B9_B10_SIG_MCS);
1407 IWL_MVM_ENC_USIG_VALUE_MASK
1408 (usig, usig_a2, IWL_RX_USIG_A2_EHT_SIG_SYM_NUM,
1409 IEEE80211_RADIOTAP_EHT_USIG2_MU_B11_B15_EHT_SIG_SYMBOLS);
1410 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1411 IWL_RX_USIG_A2_EHT_CRC_OK,
1412 IEEE80211_RADIOTAP_EHT_USIG2_MU_B16_B19_CRC);
1413 }
1414 }
1415
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)1416 static void iwl_mvm_decode_eht_ext_tb(struct iwl_mvm *mvm,
1417 struct iwl_mvm_rx_phy_data *phy_data,
1418 struct ieee80211_rx_status *rx_status,
1419 struct ieee80211_radiotap_eht *eht,
1420 struct ieee80211_radiotap_eht_usig *usig)
1421 {
1422 if (phy_data->with_data) {
1423 __le32 data5 = phy_data->d5;
1424
1425 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1426 IWL_RX_PHY_DATA5_EHT_TYPE_AND_COMP,
1427 IEEE80211_RADIOTAP_EHT_USIG2_TB_B0_B1_PPDU_TYPE);
1428 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1429 IWL_RX_PHY_DATA5_EHT_TB_SPATIAL_REUSE1,
1430 IEEE80211_RADIOTAP_EHT_USIG2_TB_B3_B6_SPATIAL_REUSE_1);
1431
1432 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1433 IWL_RX_PHY_DATA5_EHT_TB_SPATIAL_REUSE2,
1434 IEEE80211_RADIOTAP_EHT_USIG2_TB_B7_B10_SPATIAL_REUSE_2);
1435 } else {
1436 __le32 usig_a1 = phy_data->rx_vec[0];
1437 __le32 usig_a2 = phy_data->rx_vec[1];
1438
1439 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
1440 IWL_RX_USIG_A1_DISREGARD,
1441 IEEE80211_RADIOTAP_EHT_USIG1_TB_B20_B25_DISREGARD);
1442 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1443 IWL_RX_USIG_A2_EHT_PPDU_TYPE,
1444 IEEE80211_RADIOTAP_EHT_USIG2_TB_B0_B1_PPDU_TYPE);
1445 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1446 IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B2,
1447 IEEE80211_RADIOTAP_EHT_USIG2_TB_B2_VALIDATE);
1448 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1449 IWL_RX_USIG_A2_EHT_TRIG_SPATIAL_REUSE_1,
1450 IEEE80211_RADIOTAP_EHT_USIG2_TB_B3_B6_SPATIAL_REUSE_1);
1451 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1452 IWL_RX_USIG_A2_EHT_TRIG_SPATIAL_REUSE_2,
1453 IEEE80211_RADIOTAP_EHT_USIG2_TB_B7_B10_SPATIAL_REUSE_2);
1454 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1455 IWL_RX_USIG_A2_EHT_TRIG_USIG2_DISREGARD,
1456 IEEE80211_RADIOTAP_EHT_USIG2_TB_B11_B15_DISREGARD);
1457 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1458 IWL_RX_USIG_A2_EHT_CRC_OK,
1459 IEEE80211_RADIOTAP_EHT_USIG2_TB_B16_B19_CRC);
1460 }
1461 }
1462
iwl_mvm_decode_eht_ru(struct iwl_mvm * mvm,struct ieee80211_rx_status * rx_status,struct ieee80211_radiotap_eht * eht)1463 static void iwl_mvm_decode_eht_ru(struct iwl_mvm *mvm,
1464 struct ieee80211_rx_status *rx_status,
1465 struct ieee80211_radiotap_eht *eht)
1466 {
1467 u32 ru = le32_get_bits(eht->data[8],
1468 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B7_B1);
1469 enum nl80211_eht_ru_alloc nl_ru;
1470
1471 /* Using D1.5 Table 9-53a - Encoding of PS160 and RU Allocation subfields
1472 * in an EHT variant User Info field
1473 */
1474
1475 switch (ru) {
1476 case 0 ... 36:
1477 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_26;
1478 break;
1479 case 37 ... 52:
1480 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_52;
1481 break;
1482 case 53 ... 60:
1483 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_106;
1484 break;
1485 case 61 ... 64:
1486 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_242;
1487 break;
1488 case 65 ... 66:
1489 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_484;
1490 break;
1491 case 67:
1492 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996;
1493 break;
1494 case 68:
1495 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_2x996;
1496 break;
1497 case 69:
1498 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_4x996;
1499 break;
1500 case 70 ... 81:
1501 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_52P26;
1502 break;
1503 case 82 ... 89:
1504 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_106P26;
1505 break;
1506 case 90 ... 93:
1507 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_484P242;
1508 break;
1509 case 94 ... 95:
1510 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996P484;
1511 break;
1512 case 96 ... 99:
1513 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996P484P242;
1514 break;
1515 case 100 ... 103:
1516 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_2x996P484;
1517 break;
1518 case 104:
1519 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_3x996;
1520 break;
1521 case 105 ... 106:
1522 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_3x996P484;
1523 break;
1524 default:
1525 return;
1526 }
1527
1528 rx_status->bw = RATE_INFO_BW_EHT_RU;
1529 rx_status->eht.ru = nl_ru;
1530 }
1531
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)1532 static void iwl_mvm_decode_eht_phy_data(struct iwl_mvm *mvm,
1533 struct iwl_mvm_rx_phy_data *phy_data,
1534 struct ieee80211_rx_status *rx_status,
1535 struct ieee80211_radiotap_eht *eht,
1536 struct ieee80211_radiotap_eht_usig *usig)
1537
1538 {
1539 __le32 data0 = phy_data->d0;
1540 __le32 data1 = phy_data->d1;
1541 __le32 usig_a1 = phy_data->rx_vec[0];
1542 u8 info_type = phy_data->info_type;
1543
1544 /* Not in EHT range */
1545 if (info_type < IWL_RX_PHY_INFO_TYPE_EHT_MU ||
1546 info_type > IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT)
1547 return;
1548
1549 usig->common |= cpu_to_le32
1550 (IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL_KNOWN |
1551 IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR_KNOWN);
1552 if (phy_data->with_data) {
1553 usig->common |= LE32_DEC_ENC(data0,
1554 IWL_RX_PHY_DATA0_EHT_UPLINK,
1555 IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL);
1556 usig->common |= LE32_DEC_ENC(data0,
1557 IWL_RX_PHY_DATA0_EHT_BSS_COLOR_MASK,
1558 IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR);
1559 } else {
1560 usig->common |= LE32_DEC_ENC(usig_a1,
1561 IWL_RX_USIG_A1_UL_FLAG,
1562 IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL);
1563 usig->common |= LE32_DEC_ENC(usig_a1,
1564 IWL_RX_USIG_A1_BSS_COLOR,
1565 IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR);
1566 }
1567
1568 if (fw_has_capa(&mvm->fw->ucode_capa,
1569 IWL_UCODE_TLV_CAPA_SNIFF_VALIDATE_SUPPORT)) {
1570 usig->common |=
1571 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_VALIDATE_BITS_CHECKED);
1572 usig->common |=
1573 LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_VALIDATE,
1574 IEEE80211_RADIOTAP_EHT_USIG_COMMON_VALIDATE_BITS_OK);
1575 }
1576
1577 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_SPATIAL_REUSE);
1578 eht->data[0] |= LE32_DEC_ENC(data0,
1579 IWL_RX_PHY_DATA0_ETH_SPATIAL_REUSE_MASK,
1580 IEEE80211_RADIOTAP_EHT_DATA0_SPATIAL_REUSE);
1581
1582 /* All RU allocating size/index is in TB format */
1583 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_RU_ALLOC_TB_FMT);
1584 eht->data[8] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PS160,
1585 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_PS_160);
1586 eht->data[8] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_RU_ALLOC_B0,
1587 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B0);
1588 eht->data[8] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_RU_ALLOC_B1_B7,
1589 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B7_B1);
1590
1591 iwl_mvm_decode_eht_ru(mvm, rx_status, eht);
1592
1593 /* We only get here in case of IWL_RX_MPDU_PHY_TSF_OVERLOAD is set
1594 * which is on only in case of monitor mode so no need to check monitor
1595 * mode
1596 */
1597 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PRIMARY_80);
1598 eht->data[1] |=
1599 le32_encode_bits(mvm->monitor_p80,
1600 IEEE80211_RADIOTAP_EHT_DATA1_PRIMARY_80);
1601
1602 usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP_KNOWN);
1603 if (phy_data->with_data)
1604 usig->common |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_TXOP_DUR_MASK,
1605 IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP);
1606 else
1607 usig->common |= LE32_DEC_ENC(usig_a1, IWL_RX_USIG_A1_TXOP_DURATION,
1608 IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP);
1609
1610 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_LDPC_EXTRA_SYM_OM);
1611 eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_LDPC_EXT_SYM,
1612 IEEE80211_RADIOTAP_EHT_DATA0_LDPC_EXTRA_SYM_OM);
1613
1614 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PRE_PADD_FACOR_OM);
1615 eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PRE_FEC_PAD_MASK,
1616 IEEE80211_RADIOTAP_EHT_DATA0_PRE_PADD_FACOR_OM);
1617
1618 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PE_DISAMBIGUITY_OM);
1619 eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PE_DISAMBIG,
1620 IEEE80211_RADIOTAP_EHT_DATA0_PE_DISAMBIGUITY_OM);
1621
1622 /* TODO: what about IWL_RX_PHY_DATA0_EHT_BW320_SLOT */
1623
1624 if (!le32_get_bits(data0, IWL_RX_PHY_DATA0_EHT_SIGA_CRC_OK))
1625 usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BAD_USIG_CRC);
1626
1627 usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_PHY_VER_KNOWN);
1628 usig->common |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PHY_VER,
1629 IEEE80211_RADIOTAP_EHT_USIG_COMMON_PHY_VER);
1630
1631 /*
1632 * TODO: what about TB - IWL_RX_PHY_DATA1_EHT_TB_PILOT_TYPE,
1633 * IWL_RX_PHY_DATA1_EHT_TB_LOW_SS
1634 */
1635
1636 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_EHT_LTF);
1637 eht->data[0] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_SIG_LTF_NUM,
1638 IEEE80211_RADIOTAP_EHT_DATA0_EHT_LTF);
1639
1640 if (info_type == IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT ||
1641 info_type == IWL_RX_PHY_INFO_TYPE_EHT_TB)
1642 iwl_mvm_decode_eht_ext_tb(mvm, phy_data, rx_status, eht, usig);
1643
1644 if (info_type == IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT ||
1645 info_type == IWL_RX_PHY_INFO_TYPE_EHT_MU)
1646 iwl_mvm_decode_eht_ext_mu(mvm, phy_data, rx_status, eht, usig);
1647 }
1648
iwl_mvm_rx_eht(struct iwl_mvm * mvm,struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data,int queue)1649 static void iwl_mvm_rx_eht(struct iwl_mvm *mvm, struct sk_buff *skb,
1650 struct iwl_mvm_rx_phy_data *phy_data,
1651 int queue)
1652 {
1653 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1654
1655 struct ieee80211_radiotap_eht *eht;
1656 struct ieee80211_radiotap_eht_usig *usig;
1657 size_t eht_len = sizeof(*eht);
1658
1659 u32 rate_n_flags = phy_data->rate_n_flags;
1660 u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1661 /* EHT and HE have the same valus for LTF */
1662 u8 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN;
1663 u16 phy_info = phy_data->phy_info;
1664 u32 bw;
1665
1666 /* u32 for 1 user_info */
1667 if (phy_data->with_data)
1668 eht_len += sizeof(u32);
1669
1670 eht = iwl_mvm_radiotap_put_tlv(skb, IEEE80211_RADIOTAP_EHT, eht_len);
1671
1672 usig = iwl_mvm_radiotap_put_tlv(skb, IEEE80211_RADIOTAP_EHT_USIG,
1673 sizeof(*usig));
1674 rx_status->flag |= RX_FLAG_RADIOTAP_TLV_AT_END;
1675 usig->common |=
1676 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BW_KNOWN);
1677
1678 /* specific handling for 320MHz */
1679 bw = FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK, rate_n_flags);
1680 if (bw == RATE_MCS_CHAN_WIDTH_320_VAL)
1681 bw += FIELD_GET(IWL_RX_PHY_DATA0_EHT_BW320_SLOT,
1682 le32_to_cpu(phy_data->d0));
1683
1684 usig->common |= cpu_to_le32
1685 (FIELD_PREP(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BW, bw));
1686
1687 /* report the AMPDU-EOF bit on single frames */
1688 if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1689 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
1690 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1691 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
1692 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1693 }
1694
1695 /* update aggregation data for monitor sake on default queue */
1696 if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) &&
1697 (phy_info & IWL_RX_MPDU_PHY_AMPDU) && phy_data->first_subframe) {
1698 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1699 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
1700 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1701 }
1702
1703 if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1704 iwl_mvm_decode_eht_phy_data(mvm, phy_data, rx_status, eht, usig);
1705
1706 #define CHECK_TYPE(F) \
1707 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F != \
1708 (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS))
1709
1710 CHECK_TYPE(SU);
1711 CHECK_TYPE(EXT_SU);
1712 CHECK_TYPE(MU);
1713 CHECK_TYPE(TRIG);
1714
1715 switch (FIELD_GET(RATE_MCS_HE_GI_LTF_MSK, rate_n_flags)) {
1716 case 0:
1717 if (he_type == RATE_MCS_HE_TYPE_TRIG) {
1718 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_1_6;
1719 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
1720 } else {
1721 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_0_8;
1722 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1723 }
1724 break;
1725 case 1:
1726 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_1_6;
1727 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1728 break;
1729 case 2:
1730 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1731 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1732 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_3_2;
1733 else
1734 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_0_8;
1735 break;
1736 case 3:
1737 if (he_type != RATE_MCS_HE_TYPE_TRIG) {
1738 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1739 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_3_2;
1740 }
1741 break;
1742 default:
1743 /* nothing here */
1744 break;
1745 }
1746
1747 if (ltf != IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN) {
1748 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_GI);
1749 eht->data[0] |= cpu_to_le32
1750 (FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_LTF,
1751 ltf) |
1752 FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_GI,
1753 rx_status->eht.gi));
1754 }
1755
1756
1757 if (!phy_data->with_data) {
1758 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_NSS_S |
1759 IEEE80211_RADIOTAP_EHT_KNOWN_BEAMFORMED_S);
1760 eht->data[7] |=
1761 le32_encode_bits(le32_get_bits(phy_data->rx_vec[2],
1762 RX_NO_DATA_RX_VEC2_EHT_NSTS_MSK),
1763 IEEE80211_RADIOTAP_EHT_DATA7_NSS_S);
1764 if (rate_n_flags & RATE_MCS_BF_MSK)
1765 eht->data[7] |=
1766 cpu_to_le32(IEEE80211_RADIOTAP_EHT_DATA7_BEAMFORMED_S);
1767 } else {
1768 eht->user_info[0] |=
1769 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_MCS_KNOWN |
1770 IEEE80211_RADIOTAP_EHT_USER_INFO_CODING_KNOWN |
1771 IEEE80211_RADIOTAP_EHT_USER_INFO_NSS_KNOWN_O |
1772 IEEE80211_RADIOTAP_EHT_USER_INFO_BEAMFORMING_KNOWN_O |
1773 IEEE80211_RADIOTAP_EHT_USER_INFO_DATA_FOR_USER);
1774
1775 if (rate_n_flags & RATE_MCS_BF_MSK)
1776 eht->user_info[0] |=
1777 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_BEAMFORMING_O);
1778
1779 if (rate_n_flags & RATE_MCS_LDPC_MSK)
1780 eht->user_info[0] |=
1781 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_CODING);
1782
1783 eht->user_info[0] |= cpu_to_le32
1784 (FIELD_PREP(IEEE80211_RADIOTAP_EHT_USER_INFO_MCS,
1785 FIELD_GET(RATE_VHT_MCS_RATE_CODE_MSK,
1786 rate_n_flags)) |
1787 FIELD_PREP(IEEE80211_RADIOTAP_EHT_USER_INFO_NSS_O,
1788 FIELD_GET(RATE_MCS_NSS_MSK, rate_n_flags)));
1789 }
1790 }
1791
iwl_mvm_rx_he(struct iwl_mvm * mvm,struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data,int queue)1792 static void iwl_mvm_rx_he(struct iwl_mvm *mvm, struct sk_buff *skb,
1793 struct iwl_mvm_rx_phy_data *phy_data,
1794 int queue)
1795 {
1796 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1797 struct ieee80211_radiotap_he *he = NULL;
1798 struct ieee80211_radiotap_he_mu *he_mu = NULL;
1799 u32 rate_n_flags = phy_data->rate_n_flags;
1800 u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1801 u8 ltf;
1802 static const struct ieee80211_radiotap_he known = {
1803 .data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN |
1804 IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN |
1805 IEEE80211_RADIOTAP_HE_DATA1_STBC_KNOWN |
1806 IEEE80211_RADIOTAP_HE_DATA1_CODING_KNOWN),
1807 .data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN |
1808 IEEE80211_RADIOTAP_HE_DATA2_TXBF_KNOWN),
1809 };
1810 static const struct ieee80211_radiotap_he_mu mu_known = {
1811 .flags1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS_KNOWN |
1812 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM_KNOWN |
1813 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN |
1814 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_COMP_KNOWN),
1815 .flags2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW_KNOWN |
1816 IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN),
1817 };
1818 u16 phy_info = phy_data->phy_info;
1819
1820 he = skb_put_data(skb, &known, sizeof(known));
1821 rx_status->flag |= RX_FLAG_RADIOTAP_HE;
1822
1823 if (phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU ||
1824 phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU_EXT) {
1825 he_mu = skb_put_data(skb, &mu_known, sizeof(mu_known));
1826 rx_status->flag |= RX_FLAG_RADIOTAP_HE_MU;
1827 }
1828
1829 /* report the AMPDU-EOF bit on single frames */
1830 if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1831 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
1832 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1833 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF))
1834 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1835 }
1836
1837 if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1838 iwl_mvm_decode_he_phy_data(mvm, phy_data, he, he_mu, rx_status,
1839 queue);
1840
1841 /* update aggregation data for monitor sake on default queue */
1842 if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) &&
1843 (phy_info & IWL_RX_MPDU_PHY_AMPDU) && phy_data->first_subframe) {
1844 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1845 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
1846 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1847 }
1848
1849 if (he_type == RATE_MCS_HE_TYPE_EXT_SU &&
1850 rate_n_flags & RATE_MCS_HE_106T_MSK) {
1851 rx_status->bw = RATE_INFO_BW_HE_RU;
1852 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
1853 }
1854
1855 /* actually data is filled in mac80211 */
1856 if (he_type == RATE_MCS_HE_TYPE_SU ||
1857 he_type == RATE_MCS_HE_TYPE_EXT_SU)
1858 he->data1 |=
1859 cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
1860
1861 #define CHECK_TYPE(F) \
1862 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F != \
1863 (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS))
1864
1865 CHECK_TYPE(SU);
1866 CHECK_TYPE(EXT_SU);
1867 CHECK_TYPE(MU);
1868 CHECK_TYPE(TRIG);
1869
1870 he->data1 |= cpu_to_le16(he_type >> RATE_MCS_HE_TYPE_POS);
1871
1872 if (rate_n_flags & RATE_MCS_BF_MSK)
1873 he->data5 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA5_TXBF);
1874
1875 switch ((rate_n_flags & RATE_MCS_HE_GI_LTF_MSK) >>
1876 RATE_MCS_HE_GI_LTF_POS) {
1877 case 0:
1878 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1879 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1880 else
1881 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1882 if (he_type == RATE_MCS_HE_TYPE_MU)
1883 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1884 else
1885 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
1886 break;
1887 case 1:
1888 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1889 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1890 else
1891 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1892 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1893 break;
1894 case 2:
1895 if (he_type == RATE_MCS_HE_TYPE_TRIG) {
1896 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
1897 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1898 } else {
1899 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1900 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1901 }
1902 break;
1903 case 3:
1904 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
1905 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1906 break;
1907 case 4:
1908 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1909 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1910 break;
1911 default:
1912 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN;
1913 }
1914
1915 he->data5 |= le16_encode_bits(ltf,
1916 IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE);
1917 }
1918
iwl_mvm_decode_lsig(struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data)1919 static void iwl_mvm_decode_lsig(struct sk_buff *skb,
1920 struct iwl_mvm_rx_phy_data *phy_data)
1921 {
1922 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1923 struct ieee80211_radiotap_lsig *lsig;
1924
1925 switch (phy_data->info_type) {
1926 case IWL_RX_PHY_INFO_TYPE_HT:
1927 case IWL_RX_PHY_INFO_TYPE_VHT_SU:
1928 case IWL_RX_PHY_INFO_TYPE_VHT_MU:
1929 case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1930 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1931 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1932 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1933 case IWL_RX_PHY_INFO_TYPE_HE_TB:
1934 case IWL_RX_PHY_INFO_TYPE_EHT_MU:
1935 case IWL_RX_PHY_INFO_TYPE_EHT_TB:
1936 case IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT:
1937 case IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT:
1938 lsig = skb_put(skb, sizeof(*lsig));
1939 lsig->data1 = cpu_to_le16(IEEE80211_RADIOTAP_LSIG_DATA1_LENGTH_KNOWN);
1940 lsig->data2 = le16_encode_bits(le32_get_bits(phy_data->d1,
1941 IWL_RX_PHY_DATA1_LSIG_LEN_MASK),
1942 IEEE80211_RADIOTAP_LSIG_DATA2_LENGTH);
1943 rx_status->flag |= RX_FLAG_RADIOTAP_LSIG;
1944 break;
1945 default:
1946 break;
1947 }
1948 }
1949
1950 struct iwl_rx_sta_csa {
1951 bool all_sta_unblocked;
1952 struct ieee80211_vif *vif;
1953 };
1954
iwl_mvm_rx_get_sta_block_tx(void * data,struct ieee80211_sta * sta)1955 static void iwl_mvm_rx_get_sta_block_tx(void *data, struct ieee80211_sta *sta)
1956 {
1957 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1958 struct iwl_rx_sta_csa *rx_sta_csa = data;
1959
1960 if (mvmsta->vif != rx_sta_csa->vif)
1961 return;
1962
1963 if (mvmsta->disable_tx)
1964 rx_sta_csa->all_sta_unblocked = false;
1965 }
1966
1967 /*
1968 * Note: requires also rx_status->band to be prefilled, as well
1969 * as phy_data (apart from phy_data->info_type)
1970 * Note: desc/hdr may be NULL
1971 */
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)1972 static void iwl_mvm_rx_fill_status(struct iwl_mvm *mvm,
1973 struct iwl_rx_mpdu_desc *desc,
1974 struct ieee80211_hdr *hdr,
1975 struct sk_buff *skb,
1976 struct iwl_mvm_rx_phy_data *phy_data,
1977 int queue)
1978 {
1979 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1980 u32 rate_n_flags = phy_data->rate_n_flags;
1981 u8 stbc = u32_get_bits(rate_n_flags, RATE_MCS_STBC_MSK);
1982 u32 format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
1983 bool is_sgi;
1984
1985 phy_data->info_type = IWL_RX_PHY_INFO_TYPE_NONE;
1986
1987 if (phy_data->phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1988 phy_data->info_type =
1989 le32_get_bits(phy_data->d1,
1990 IWL_RX_PHY_DATA1_INFO_TYPE_MASK);
1991
1992 /* This may be overridden by iwl_mvm_rx_he() to HE_RU */
1993 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
1994 case RATE_MCS_CHAN_WIDTH_20:
1995 break;
1996 case RATE_MCS_CHAN_WIDTH_40:
1997 rx_status->bw = RATE_INFO_BW_40;
1998 break;
1999 case RATE_MCS_CHAN_WIDTH_80:
2000 rx_status->bw = RATE_INFO_BW_80;
2001 break;
2002 case RATE_MCS_CHAN_WIDTH_160:
2003 rx_status->bw = RATE_INFO_BW_160;
2004 break;
2005 case RATE_MCS_CHAN_WIDTH_320:
2006 rx_status->bw = RATE_INFO_BW_320;
2007 break;
2008 }
2009
2010 /* must be before L-SIG data */
2011 if (format == RATE_MCS_MOD_TYPE_HE)
2012 iwl_mvm_rx_he(mvm, skb, phy_data, queue);
2013
2014 iwl_mvm_decode_lsig(skb, phy_data);
2015
2016 rx_status->device_timestamp = phy_data->gp2_on_air_rise;
2017
2018 if (mvm->rx_ts_ptp && mvm->monitor_on) {
2019 u64 adj_time =
2020 iwl_mvm_ptp_get_adj_time(mvm, phy_data->gp2_on_air_rise * NSEC_PER_USEC);
2021
2022 rx_status->mactime = div64_u64(adj_time, NSEC_PER_USEC);
2023 rx_status->flag |= RX_FLAG_MACTIME_IS_RTAP_TS64;
2024 rx_status->flag &= ~RX_FLAG_MACTIME;
2025 }
2026
2027 rx_status->freq = ieee80211_channel_to_frequency(phy_data->channel,
2028 rx_status->band);
2029 iwl_mvm_get_signal_strength(mvm, desc, hdr, rx_status, rate_n_flags,
2030 phy_data->energy_a, phy_data->energy_b);
2031
2032 /* using TLV format and must be after all fixed len fields */
2033 if (format == RATE_MCS_MOD_TYPE_EHT)
2034 iwl_mvm_rx_eht(mvm, skb, phy_data, queue);
2035
2036 if (unlikely(mvm->monitor_on))
2037 iwl_mvm_add_rtap_sniffer_config(mvm, skb);
2038
2039 is_sgi = format == RATE_MCS_MOD_TYPE_HE ?
2040 iwl_he_is_sgi(rate_n_flags) :
2041 rate_n_flags & RATE_MCS_SGI_MSK;
2042
2043 if (!(format == RATE_MCS_MOD_TYPE_CCK) && is_sgi)
2044 rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
2045
2046 if (rate_n_flags & RATE_MCS_LDPC_MSK)
2047 rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
2048
2049 switch (format) {
2050 case RATE_MCS_MOD_TYPE_VHT:
2051 rx_status->encoding = RX_ENC_VHT;
2052 break;
2053 case RATE_MCS_MOD_TYPE_HE:
2054 rx_status->encoding = RX_ENC_HE;
2055 rx_status->he_dcm =
2056 !!(rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK);
2057 break;
2058 case RATE_MCS_MOD_TYPE_EHT:
2059 rx_status->encoding = RX_ENC_EHT;
2060 break;
2061 }
2062
2063 switch (format) {
2064 case RATE_MCS_MOD_TYPE_HT:
2065 rx_status->encoding = RX_ENC_HT;
2066 rx_status->rate_idx = RATE_HT_MCS_INDEX(rate_n_flags);
2067 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
2068 break;
2069 case RATE_MCS_MOD_TYPE_VHT:
2070 case RATE_MCS_MOD_TYPE_HE:
2071 case RATE_MCS_MOD_TYPE_EHT:
2072 rx_status->nss =
2073 u32_get_bits(rate_n_flags, RATE_MCS_NSS_MSK) + 1;
2074 rx_status->rate_idx = rate_n_flags & RATE_MCS_CODE_MSK;
2075 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
2076 break;
2077 default: {
2078 int rate = iwl_mvm_legacy_hw_idx_to_mac80211_idx(rate_n_flags,
2079 rx_status->band);
2080
2081 rx_status->rate_idx = rate;
2082
2083 if ((rate < 0 || rate > 0xFF)) {
2084 rx_status->rate_idx = 0;
2085 if (net_ratelimit())
2086 IWL_ERR(mvm, "Invalid rate flags 0x%x, band %d,\n",
2087 rate_n_flags, rx_status->band);
2088 }
2089
2090 break;
2091 }
2092 }
2093 }
2094
iwl_mvm_rx_mpdu_mq(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2095 void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
2096 struct iwl_rx_cmd_buffer *rxb, int queue)
2097 {
2098 struct ieee80211_rx_status *rx_status;
2099 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2100 struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
2101 struct ieee80211_hdr *hdr;
2102 u32 len;
2103 u32 pkt_len = iwl_rx_packet_payload_len(pkt);
2104 struct ieee80211_sta *sta = NULL;
2105 struct sk_buff *skb;
2106 u8 crypt_len = 0;
2107 size_t desc_size;
2108 struct iwl_mvm_rx_phy_data phy_data = {};
2109 u32 format;
2110
2111 if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
2112 return;
2113
2114 if (mvm->trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
2115 desc_size = sizeof(*desc);
2116 else
2117 desc_size = IWL_RX_DESC_SIZE_V1;
2118
2119 if (unlikely(pkt_len < desc_size)) {
2120 IWL_DEBUG_DROP(mvm, "Bad REPLY_RX_MPDU_CMD size\n");
2121 return;
2122 }
2123
2124 if (mvm->trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
2125 phy_data.rate_n_flags =
2126 iwl_mvm_v3_rate_from_fw(desc->v3.rate_n_flags,
2127 mvm->fw_rates_ver);
2128 phy_data.channel = desc->v3.channel;
2129 phy_data.gp2_on_air_rise = le32_to_cpu(desc->v3.gp2_on_air_rise);
2130 phy_data.energy_a = desc->v3.energy_a;
2131 phy_data.energy_b = desc->v3.energy_b;
2132
2133 phy_data.d0 = desc->v3.phy_data0;
2134 phy_data.d1 = desc->v3.phy_data1;
2135 phy_data.d2 = desc->v3.phy_data2;
2136 phy_data.d3 = desc->v3.phy_data3;
2137 phy_data.eht_d4 = desc->phy_eht_data4;
2138 phy_data.d5 = desc->v3.phy_data5;
2139 } else {
2140 phy_data.rate_n_flags =
2141 iwl_mvm_v3_rate_from_fw(desc->v1.rate_n_flags,
2142 mvm->fw_rates_ver);
2143 phy_data.channel = desc->v1.channel;
2144 phy_data.gp2_on_air_rise = le32_to_cpu(desc->v1.gp2_on_air_rise);
2145 phy_data.energy_a = desc->v1.energy_a;
2146 phy_data.energy_b = desc->v1.energy_b;
2147
2148 phy_data.d0 = desc->v1.phy_data0;
2149 phy_data.d1 = desc->v1.phy_data1;
2150 phy_data.d2 = desc->v1.phy_data2;
2151 phy_data.d3 = desc->v1.phy_data3;
2152 }
2153
2154 format = phy_data.rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
2155
2156 len = le16_to_cpu(desc->mpdu_len);
2157
2158 if (unlikely(len + desc_size > pkt_len)) {
2159 IWL_DEBUG_DROP(mvm, "FW lied about packet len\n");
2160 return;
2161 }
2162
2163 phy_data.with_data = true;
2164 phy_data.phy_info = le16_to_cpu(desc->phy_info);
2165 phy_data.d4 = desc->phy_data4;
2166
2167 hdr = (void *)(pkt->data + desc_size);
2168 /* Dont use dev_alloc_skb(), we'll have enough headroom once
2169 * ieee80211_hdr pulled.
2170 */
2171 skb = alloc_skb(128, GFP_ATOMIC);
2172 if (!skb) {
2173 IWL_ERR(mvm, "alloc_skb failed\n");
2174 return;
2175 }
2176
2177 if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
2178 /*
2179 * If the device inserted padding it means that (it thought)
2180 * the 802.11 header wasn't a multiple of 4 bytes long. In
2181 * this case, reserve two bytes at the start of the SKB to
2182 * align the payload properly in case we end up copying it.
2183 */
2184 skb_reserve(skb, 2);
2185 }
2186
2187 rx_status = IEEE80211_SKB_RXCB(skb);
2188
2189 /*
2190 * Keep packets with CRC errors (and with overrun) for monitor mode
2191 * (otherwise the firmware discards them) but mark them as bad.
2192 */
2193 if (!(desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_CRC_OK)) ||
2194 !(desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_OVERRUN_OK))) {
2195 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n",
2196 le32_to_cpu(desc->status));
2197 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
2198 }
2199
2200 /* set the preamble flag if appropriate */
2201 if (format == RATE_MCS_MOD_TYPE_CCK &&
2202 phy_data.phy_info & IWL_RX_MPDU_PHY_SHORT_PREAMBLE)
2203 rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
2204
2205 if (likely(!(phy_data.phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD))) {
2206 u64 tsf_on_air_rise;
2207
2208 if (mvm->trans->mac_cfg->device_family >=
2209 IWL_DEVICE_FAMILY_AX210)
2210 tsf_on_air_rise = le64_to_cpu(desc->v3.tsf_on_air_rise);
2211 else
2212 tsf_on_air_rise = le64_to_cpu(desc->v1.tsf_on_air_rise);
2213
2214 rx_status->mactime = tsf_on_air_rise;
2215 /* TSF as indicated by the firmware is at INA time */
2216 rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;
2217 }
2218
2219 if (iwl_mvm_is_band_in_rx_supported(mvm)) {
2220 u8 band = u8_get_bits(desc->mac_phy_band,
2221 IWL_RX_MPDU_MAC_PHY_BAND_BAND_MASK);
2222
2223 rx_status->band = iwl_mvm_nl80211_band_from_phy(band);
2224 } else {
2225 rx_status->band = phy_data.channel > 14 ? NL80211_BAND_5GHZ :
2226 NL80211_BAND_2GHZ;
2227 }
2228
2229 /* update aggregation data for monitor sake on default queue */
2230 if (!queue && (phy_data.phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
2231 bool toggle_bit;
2232
2233 toggle_bit = phy_data.phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE;
2234 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
2235 /*
2236 * Toggle is switched whenever new aggregation starts. Make
2237 * sure ampdu_reference is never 0 so we can later use it to
2238 * see if the frame was really part of an A-MPDU or not.
2239 */
2240 if (toggle_bit != mvm->ampdu_toggle) {
2241 mvm->ampdu_ref++;
2242 if (mvm->ampdu_ref == 0)
2243 mvm->ampdu_ref++;
2244 mvm->ampdu_toggle = toggle_bit;
2245 phy_data.first_subframe = true;
2246 }
2247 rx_status->ampdu_reference = mvm->ampdu_ref;
2248 }
2249
2250 rcu_read_lock();
2251
2252 if (desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_SRC_STA_FOUND)) {
2253 u8 sta_id = le32_get_bits(desc->status,
2254 IWL_RX_MPDU_STATUS_STA_ID);
2255
2256 if (!WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations)) {
2257 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
2258 if (IS_ERR(sta))
2259 sta = NULL;
2260 }
2261 } else if (!is_multicast_ether_addr(hdr->addr2)) {
2262 /*
2263 * This is fine since we prevent two stations with the same
2264 * address from being added.
2265 */
2266 sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
2267 }
2268
2269 if (iwl_mvm_rx_crypto(mvm, sta, hdr, rx_status, phy_data.phy_info, desc,
2270 le32_to_cpu(pkt->len_n_flags), queue,
2271 &crypt_len)) {
2272 kfree_skb(skb);
2273 goto out;
2274 }
2275
2276 iwl_mvm_rx_fill_status(mvm, desc, hdr, skb, &phy_data, queue);
2277
2278 if (sta) {
2279 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2280 struct ieee80211_vif *tx_blocked_vif =
2281 rcu_dereference(mvm->csa_tx_blocked_vif);
2282 u8 baid = (u8)((le32_to_cpu(desc->reorder_data) &
2283 IWL_RX_MPDU_REORDER_BAID_MASK) >>
2284 IWL_RX_MPDU_REORDER_BAID_SHIFT);
2285 struct iwl_fw_dbg_trigger_tlv *trig;
2286 struct ieee80211_vif *vif = mvmsta->vif;
2287
2288 if (!mvm->tcm.paused && len >= sizeof(*hdr) &&
2289 !is_multicast_ether_addr(hdr->addr1) &&
2290 ieee80211_is_data(hdr->frame_control) &&
2291 time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
2292 schedule_delayed_work(&mvm->tcm.work, 0);
2293
2294 /*
2295 * We have tx blocked stations (with CS bit). If we heard
2296 * frames from a blocked station on a new channel we can
2297 * TX to it again.
2298 */
2299 if (unlikely(tx_blocked_vif) && tx_blocked_vif == vif) {
2300 struct iwl_mvm_vif *mvmvif =
2301 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
2302 struct iwl_rx_sta_csa rx_sta_csa = {
2303 .all_sta_unblocked = true,
2304 .vif = tx_blocked_vif,
2305 };
2306
2307 if (mvmvif->csa_target_freq == rx_status->freq)
2308 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta,
2309 false);
2310 ieee80211_iterate_stations_atomic(mvm->hw,
2311 iwl_mvm_rx_get_sta_block_tx,
2312 &rx_sta_csa);
2313
2314 if (rx_sta_csa.all_sta_unblocked) {
2315 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2316 /* Unblock BCAST / MCAST station */
2317 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
2318 cancel_delayed_work(&mvm->cs_tx_unblock_dwork);
2319 }
2320 }
2321
2322 rs_update_last_rssi(mvm, mvmsta, rx_status);
2323
2324 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt,
2325 ieee80211_vif_to_wdev(vif),
2326 FW_DBG_TRIGGER_RSSI);
2327
2328 if (trig && ieee80211_is_beacon(hdr->frame_control)) {
2329 struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
2330 s32 rssi;
2331
2332 rssi_trig = (void *)trig->data;
2333 rssi = le32_to_cpu(rssi_trig->rssi);
2334
2335 if (rx_status->signal < rssi)
2336 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
2337 NULL);
2338 }
2339
2340 if (ieee80211_is_data(hdr->frame_control))
2341 iwl_mvm_rx_csum(mvm, sta, skb, pkt);
2342
2343 if (iwl_mvm_is_dup(sta, queue, rx_status, hdr, desc)) {
2344 IWL_DEBUG_DROP(mvm, "Dropping duplicate packet 0x%x\n",
2345 le16_to_cpu(hdr->seq_ctrl));
2346 kfree_skb(skb);
2347 goto out;
2348 }
2349
2350 /*
2351 * Our hardware de-aggregates AMSDUs but copies the mac header
2352 * as it to the de-aggregated MPDUs. We need to turn off the
2353 * AMSDU bit in the QoS control ourselves.
2354 * In addition, HW reverses addr3 and addr4 - reverse it back.
2355 */
2356 if ((desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
2357 !WARN_ON(!ieee80211_is_data_qos(hdr->frame_control))) {
2358 u8 *qc = ieee80211_get_qos_ctl(hdr);
2359
2360 *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
2361
2362 if (mvm->trans->mac_cfg->device_family ==
2363 IWL_DEVICE_FAMILY_9000) {
2364 iwl_mvm_flip_address(hdr->addr3);
2365
2366 if (ieee80211_has_a4(hdr->frame_control))
2367 iwl_mvm_flip_address(hdr->addr4);
2368 }
2369 }
2370 if (baid != IWL_RX_REORDER_DATA_INVALID_BAID) {
2371 u32 reorder_data = le32_to_cpu(desc->reorder_data);
2372
2373 iwl_mvm_agg_rx_received(mvm, reorder_data, baid);
2374 }
2375 }
2376
2377 /* management stuff on default queue */
2378 if (!queue) {
2379 if (unlikely((ieee80211_is_beacon(hdr->frame_control) ||
2380 ieee80211_is_probe_resp(hdr->frame_control)) &&
2381 mvm->sched_scan_pass_all ==
2382 SCHED_SCAN_PASS_ALL_ENABLED))
2383 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND;
2384
2385 if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
2386 ieee80211_is_probe_resp(hdr->frame_control)))
2387 rx_status->boottime_ns = ktime_get_boottime_ns();
2388 }
2389
2390 if (iwl_mvm_create_skb(mvm, skb, hdr, len, crypt_len, rxb)) {
2391 kfree_skb(skb);
2392 goto out;
2393 }
2394
2395 if (!iwl_mvm_reorder(mvm, napi, queue, sta, skb, desc) &&
2396 likely(!iwl_mvm_time_sync_frame(mvm, skb, hdr->addr2)) &&
2397 likely(!iwl_mvm_mei_filter_scan(mvm, skb))) {
2398 if (mvm->trans->mac_cfg->device_family == IWL_DEVICE_FAMILY_9000 &&
2399 (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
2400 !(desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME))
2401 rx_status->flag |= RX_FLAG_AMSDU_MORE;
2402
2403 iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue, sta);
2404 }
2405 out:
2406 rcu_read_unlock();
2407 }
2408
iwl_mvm_rx_monitor_no_data(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2409 void iwl_mvm_rx_monitor_no_data(struct iwl_mvm *mvm, struct napi_struct *napi,
2410 struct iwl_rx_cmd_buffer *rxb, int queue)
2411 {
2412 struct ieee80211_rx_status *rx_status;
2413 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2414 struct iwl_rx_no_data_ver_3 *desc = (void *)pkt->data;
2415 u32 rssi;
2416 struct ieee80211_sta *sta = NULL;
2417 struct sk_buff *skb;
2418 struct iwl_mvm_rx_phy_data phy_data;
2419 u32 format;
2420
2421 if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
2422 return;
2423
2424 if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(struct iwl_rx_no_data)))
2425 return;
2426
2427 rssi = le32_to_cpu(desc->rssi);
2428 phy_data.d0 = desc->phy_info[0];
2429 phy_data.d1 = desc->phy_info[1];
2430 phy_data.phy_info = IWL_RX_MPDU_PHY_TSF_OVERLOAD;
2431 phy_data.gp2_on_air_rise = le32_to_cpu(desc->on_air_rise_time);
2432 phy_data.energy_a = u32_get_bits(rssi, RX_NO_DATA_CHAIN_A_MSK);
2433 phy_data.energy_b = u32_get_bits(rssi, RX_NO_DATA_CHAIN_B_MSK);
2434 phy_data.channel = u32_get_bits(rssi, RX_NO_DATA_CHANNEL_MSK);
2435 phy_data.with_data = false;
2436 phy_data.rx_vec[0] = desc->rx_vec[0];
2437 phy_data.rx_vec[1] = desc->rx_vec[1];
2438
2439 phy_data.rate_n_flags = iwl_mvm_v3_rate_from_fw(desc->rate,
2440 mvm->fw_rates_ver);
2441
2442 format = phy_data.rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
2443
2444 if (iwl_fw_lookup_notif_ver(mvm->fw, DATA_PATH_GROUP,
2445 RX_NO_DATA_NOTIF, 0) >= 3) {
2446 if (unlikely(iwl_rx_packet_payload_len(pkt) <
2447 sizeof(struct iwl_rx_no_data_ver_3)))
2448 /* invalid len for ver 3 */
2449 return;
2450 phy_data.rx_vec[2] = desc->rx_vec[2];
2451 phy_data.rx_vec[3] = desc->rx_vec[3];
2452 } else {
2453 if (format == RATE_MCS_MOD_TYPE_EHT)
2454 /* no support for EHT before version 3 API */
2455 return;
2456 }
2457
2458 /* Dont use dev_alloc_skb(), we'll have enough headroom once
2459 * ieee80211_hdr pulled.
2460 */
2461 skb = alloc_skb(128, GFP_ATOMIC);
2462 if (!skb) {
2463 IWL_ERR(mvm, "alloc_skb failed\n");
2464 return;
2465 }
2466
2467 rx_status = IEEE80211_SKB_RXCB(skb);
2468
2469 /* 0-length PSDU */
2470 rx_status->flag |= RX_FLAG_NO_PSDU;
2471
2472 /* mark as failed PLCP on any errors to skip checks in mac80211 */
2473 if (le32_get_bits(desc->info, RX_NO_DATA_INFO_ERR_MSK) !=
2474 RX_NO_DATA_INFO_ERR_NONE)
2475 rx_status->flag |= RX_FLAG_FAILED_PLCP_CRC;
2476
2477 switch (le32_get_bits(desc->info, RX_NO_DATA_INFO_TYPE_MSK)) {
2478 case RX_NO_DATA_INFO_TYPE_NDP:
2479 rx_status->zero_length_psdu_type =
2480 IEEE80211_RADIOTAP_ZERO_LEN_PSDU_SOUNDING;
2481 break;
2482 case RX_NO_DATA_INFO_TYPE_MU_UNMATCHED:
2483 case RX_NO_DATA_INFO_TYPE_TB_UNMATCHED:
2484 rx_status->zero_length_psdu_type =
2485 IEEE80211_RADIOTAP_ZERO_LEN_PSDU_NOT_CAPTURED;
2486 break;
2487 default:
2488 rx_status->zero_length_psdu_type =
2489 IEEE80211_RADIOTAP_ZERO_LEN_PSDU_VENDOR;
2490 break;
2491 }
2492
2493 rx_status->band = phy_data.channel > 14 ? NL80211_BAND_5GHZ :
2494 NL80211_BAND_2GHZ;
2495
2496 iwl_mvm_rx_fill_status(mvm, NULL, NULL, skb, &phy_data, queue);
2497
2498 /* no more radio tap info should be put after this point.
2499 *
2500 * We mark it as mac header, for upper layers to know where
2501 * all radio tap header ends.
2502 *
2503 * Since data doesn't move data while putting data on skb and that is
2504 * the only way we use, data + len is the next place that hdr would be put
2505 */
2506 skb_set_mac_header(skb, skb->len);
2507
2508 /*
2509 * Override the nss from the rx_vec since the rate_n_flags has
2510 * only 2 bits for the nss which gives a max of 4 ss but there
2511 * may be up to 8 spatial streams.
2512 */
2513 switch (format) {
2514 case RATE_MCS_MOD_TYPE_VHT:
2515 rx_status->nss =
2516 le32_get_bits(desc->rx_vec[0],
2517 RX_NO_DATA_RX_VEC0_VHT_NSTS_MSK) + 1;
2518 break;
2519 case RATE_MCS_MOD_TYPE_HE:
2520 rx_status->nss =
2521 le32_get_bits(desc->rx_vec[0],
2522 RX_NO_DATA_RX_VEC0_HE_NSTS_MSK) + 1;
2523 break;
2524 case RATE_MCS_MOD_TYPE_EHT:
2525 rx_status->nss =
2526 le32_get_bits(desc->rx_vec[2],
2527 RX_NO_DATA_RX_VEC2_EHT_NSTS_MSK) + 1;
2528 }
2529
2530 rcu_read_lock();
2531 ieee80211_rx_napi(mvm->hw, sta, skb, napi);
2532 rcu_read_unlock();
2533 }
2534
iwl_mvm_rx_frame_release(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2535 void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
2536 struct iwl_rx_cmd_buffer *rxb, int queue)
2537 {
2538 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2539 struct iwl_frame_release *release = (void *)pkt->data;
2540
2541 if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(*release)))
2542 return;
2543
2544 iwl_mvm_release_frames_from_notif(mvm, napi, release->baid,
2545 le16_to_cpu(release->nssn),
2546 queue);
2547 }
2548
iwl_mvm_rx_bar_frame_release(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2549 void iwl_mvm_rx_bar_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
2550 struct iwl_rx_cmd_buffer *rxb, int queue)
2551 {
2552 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2553 struct iwl_bar_frame_release *release = (void *)pkt->data;
2554 struct iwl_mvm_baid_data *baid_data;
2555 u32 pkt_len = iwl_rx_packet_payload_len(pkt);
2556 unsigned int baid, nssn, sta_id, tid;
2557
2558 if (IWL_FW_CHECK(mvm, pkt_len < sizeof(*release),
2559 "Unexpected frame release notif size %d (expected %zu)\n",
2560 pkt_len, sizeof(*release)))
2561 return;
2562
2563 baid = le32_get_bits(release->ba_info,
2564 IWL_BAR_FRAME_RELEASE_BAID_MASK);
2565 nssn = le32_get_bits(release->ba_info,
2566 IWL_BAR_FRAME_RELEASE_NSSN_MASK);
2567 sta_id = le32_get_bits(release->sta_tid,
2568 IWL_BAR_FRAME_RELEASE_STA_MASK);
2569 tid = le32_get_bits(release->sta_tid,
2570 IWL_BAR_FRAME_RELEASE_TID_MASK);
2571
2572 if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID ||
2573 baid >= ARRAY_SIZE(mvm->baid_map)))
2574 return;
2575
2576 rcu_read_lock();
2577 baid_data = rcu_dereference(mvm->baid_map[baid]);
2578 if (!baid_data) {
2579 IWL_DEBUG_RX(mvm,
2580 "Got valid BAID %d but not allocated, invalid BAR release!\n",
2581 baid);
2582 goto out;
2583 }
2584
2585 if (WARN(tid != baid_data->tid || sta_id > IWL_STATION_COUNT_MAX ||
2586 !(baid_data->sta_mask & BIT(sta_id)),
2587 "baid 0x%x is mapped to sta_mask:0x%x tid:%d, but BAR release received for sta:%d tid:%d\n",
2588 baid, baid_data->sta_mask, baid_data->tid, sta_id,
2589 tid))
2590 goto out;
2591
2592 IWL_DEBUG_DROP(mvm, "Received a BAR, expect packet loss: nssn %d\n",
2593 nssn);
2594
2595 iwl_mvm_release_frames_from_notif(mvm, napi, baid, nssn, queue);
2596 out:
2597 rcu_read_unlock();
2598 }
2599
iwl_mvm_rx_beacon_filter_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)2600 void iwl_mvm_rx_beacon_filter_notif(struct iwl_mvm *mvm,
2601 struct iwl_rx_cmd_buffer *rxb)
2602 {
2603 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2604 /* MAC or link ID in v1/v2, but driver has the IDs equal */
2605 struct iwl_beacon_filter_notif *notif = (void *)pkt->data;
2606 u32 id = le32_to_cpu(notif->link_id);
2607 struct iwl_mvm_vif *mvm_vif;
2608 struct ieee80211_vif *vif;
2609
2610 /* >= means AUX MAC/link ID, no energy correction needed then */
2611 if (IWL_FW_CHECK(mvm, id >= ARRAY_SIZE(mvm->vif_id_to_mac),
2612 "invalid link ID %d\n", id))
2613 return;
2614
2615 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false);
2616 if (!vif)
2617 return;
2618
2619 mvm_vif = iwl_mvm_vif_from_mac80211(vif);
2620
2621 mvm_vif->deflink.average_beacon_energy =
2622 le32_to_cpu(notif->average_energy);
2623 }
2624