1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2012-2014, 2018-2024 Intel Corporation
4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
5 * Copyright (C) 2015-2017 Intel Deutschland GmbH
6 */
7 #include <linux/etherdevice.h>
8 #include <linux/skbuff.h>
9 #if defined(__FreeBSD__)
10 #include <net/ieee80211_radiotap.h>
11 #endif
12 #include "iwl-trans.h"
13 #include "mvm.h"
14 #include "fw-api.h"
15 #include "time-sync.h"
16
iwl_mvm_check_pn(struct iwl_mvm * mvm,struct sk_buff * skb,int queue,struct ieee80211_sta * sta)17 static inline int iwl_mvm_check_pn(struct iwl_mvm *mvm, struct sk_buff *skb,
18 int queue, struct ieee80211_sta *sta)
19 {
20 struct iwl_mvm_sta *mvmsta;
21 struct ieee80211_hdr *hdr = (void *)skb_mac_header(skb);
22 struct ieee80211_rx_status *stats = IEEE80211_SKB_RXCB(skb);
23 struct iwl_mvm_key_pn *ptk_pn;
24 int res;
25 u8 tid, keyidx;
26 u8 pn[IEEE80211_CCMP_PN_LEN];
27 u8 *extiv;
28
29 /* do PN checking */
30
31 /* multicast and non-data only arrives on default queue */
32 if (!ieee80211_is_data(hdr->frame_control) ||
33 is_multicast_ether_addr(hdr->addr1))
34 return 0;
35
36 /* do not check PN for open AP */
37 if (!(stats->flag & RX_FLAG_DECRYPTED))
38 return 0;
39
40 /*
41 * avoid checking for default queue - we don't want to replicate
42 * all the logic that's necessary for checking the PN on fragmented
43 * frames, leave that to mac80211
44 */
45 if (queue == 0)
46 return 0;
47
48 /* if we are here - this for sure is either CCMP or GCMP */
49 if (IS_ERR_OR_NULL(sta)) {
50 IWL_DEBUG_DROP(mvm,
51 "expected hw-decrypted unicast frame for station\n");
52 return -1;
53 }
54
55 mvmsta = iwl_mvm_sta_from_mac80211(sta);
56
57 extiv = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control);
58 keyidx = extiv[3] >> 6;
59
60 ptk_pn = rcu_dereference(mvmsta->ptk_pn[keyidx]);
61 if (!ptk_pn)
62 return -1;
63
64 if (ieee80211_is_data_qos(hdr->frame_control))
65 tid = ieee80211_get_tid(hdr);
66 else
67 tid = 0;
68
69 /* we don't use HCCA/802.11 QoS TSPECs, so drop such frames */
70 if (tid >= IWL_MAX_TID_COUNT)
71 return -1;
72
73 /* load pn */
74 pn[0] = extiv[7];
75 pn[1] = extiv[6];
76 pn[2] = extiv[5];
77 pn[3] = extiv[4];
78 pn[4] = extiv[1];
79 pn[5] = extiv[0];
80
81 res = memcmp(pn, ptk_pn->q[queue].pn[tid], IEEE80211_CCMP_PN_LEN);
82 if (res < 0)
83 return -1;
84 if (!res && !(stats->flag & RX_FLAG_ALLOW_SAME_PN))
85 return -1;
86
87 memcpy(ptk_pn->q[queue].pn[tid], pn, IEEE80211_CCMP_PN_LEN);
88 stats->flag |= RX_FLAG_PN_VALIDATED;
89
90 return 0;
91 }
92
93 /* iwl_mvm_create_skb Adds the rxb to a new skb */
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)94 static int iwl_mvm_create_skb(struct iwl_mvm *mvm, struct sk_buff *skb,
95 struct ieee80211_hdr *hdr, u16 len, u8 crypt_len,
96 struct iwl_rx_cmd_buffer *rxb)
97 {
98 struct iwl_rx_packet *pkt = rxb_addr(rxb);
99 struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
100 unsigned int headlen, fraglen, pad_len = 0;
101 unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control);
102 u8 mic_crc_len = u8_get_bits(desc->mac_flags1,
103 IWL_RX_MPDU_MFLG1_MIC_CRC_LEN_MASK) << 1;
104
105 if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
106 len -= 2;
107 pad_len = 2;
108 }
109
110 /*
111 * For non monitor interface strip the bytes the RADA might not have
112 * removed (it might be disabled, e.g. for mgmt frames). As a monitor
113 * interface cannot exist with other interfaces, this removal is safe
114 * and sufficient, in monitor mode there's no decryption being done.
115 */
116 if (len > mic_crc_len && !ieee80211_hw_check(mvm->hw, RX_INCLUDES_FCS))
117 len -= mic_crc_len;
118
119 /* If frame is small enough to fit in skb->head, pull it completely.
120 * If not, only pull ieee80211_hdr (including crypto if present, and
121 * an additional 8 bytes for SNAP/ethertype, see below) so that
122 * splice() or TCP coalesce are more efficient.
123 *
124 * Since, in addition, ieee80211_data_to_8023() always pull in at
125 * least 8 bytes (possibly more for mesh) we can do the same here
126 * to save the cost of doing it later. That still doesn't pull in
127 * the actual IP header since the typical case has a SNAP header.
128 * If the latter changes (there are efforts in the standards group
129 * to do so) we should revisit this and ieee80211_data_to_8023().
130 */
131 headlen = (len <= skb_tailroom(skb)) ? len :
132 hdrlen + crypt_len + 8;
133
134 /* The firmware may align the packet to DWORD.
135 * The padding is inserted after the IV.
136 * After copying the header + IV skip the padding if
137 * present before copying packet data.
138 */
139 hdrlen += crypt_len;
140
141 if (unlikely(headlen < hdrlen))
142 return -EINVAL;
143
144 /* Since data doesn't move data while putting data on skb and that is
145 * the only way we use, data + len is the next place that hdr would be put
146 */
147 skb_set_mac_header(skb, skb->len);
148 skb_put_data(skb, hdr, hdrlen);
149 skb_put_data(skb, (u8 *)hdr + hdrlen + pad_len, headlen - hdrlen);
150
151 /*
152 * If we did CHECKSUM_COMPLETE, the hardware only does it right for
153 * certain cases and starts the checksum after the SNAP. Check if
154 * this is the case - it's easier to just bail out to CHECKSUM_NONE
155 * in the cases the hardware didn't handle, since it's rare to see
156 * such packets, even though the hardware did calculate the checksum
157 * in this case, just starting after the MAC header instead.
158 *
159 * Starting from Bz hardware, it calculates starting directly after
160 * the MAC header, so that matches mac80211's expectation.
161 */
162 if (skb->ip_summed == CHECKSUM_COMPLETE) {
163 struct {
164 u8 hdr[6];
165 __be16 type;
166 } __packed *shdr = (void *)((u8 *)hdr + hdrlen + pad_len);
167
168 if (unlikely(headlen - hdrlen < sizeof(*shdr) ||
169 !ether_addr_equal(shdr->hdr, rfc1042_header) ||
170 (shdr->type != htons(ETH_P_IP) &&
171 shdr->type != htons(ETH_P_ARP) &&
172 shdr->type != htons(ETH_P_IPV6) &&
173 shdr->type != htons(ETH_P_8021Q) &&
174 shdr->type != htons(ETH_P_PAE) &&
175 shdr->type != htons(ETH_P_TDLS))))
176 skb->ip_summed = CHECKSUM_NONE;
177 else if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_BZ)
178 /* mac80211 assumes full CSUM including SNAP header */
179 skb_postpush_rcsum(skb, shdr, sizeof(*shdr));
180 }
181
182 fraglen = len - headlen;
183
184 if (fraglen) {
185 int offset = (u8 *)hdr + headlen + pad_len -
186 (u8 *)rxb_addr(rxb) + rxb_offset(rxb);
187
188 skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset,
189 fraglen, rxb->truesize);
190 }
191
192 return 0;
193 }
194
195 /* put a TLV on the skb and return data pointer
196 *
197 * Also pad to 4 the len and zero out all data part
198 */
199 static void *
iwl_mvm_radiotap_put_tlv(struct sk_buff * skb,u16 type,u16 len)200 iwl_mvm_radiotap_put_tlv(struct sk_buff *skb, u16 type, u16 len)
201 {
202 struct ieee80211_radiotap_tlv *tlv;
203
204 tlv = skb_put(skb, sizeof(*tlv));
205 tlv->type = cpu_to_le16(type);
206 tlv->len = cpu_to_le16(len);
207 return skb_put_zero(skb, ALIGN(len, 4));
208 }
209
iwl_mvm_add_rtap_sniffer_config(struct iwl_mvm * mvm,struct sk_buff * skb)210 static void iwl_mvm_add_rtap_sniffer_config(struct iwl_mvm *mvm,
211 struct sk_buff *skb)
212 {
213 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
214 struct ieee80211_radiotap_vendor_content *radiotap;
215 const u16 vendor_data_len = sizeof(mvm->cur_aid);
216
217 if (!mvm->cur_aid)
218 return;
219
220 radiotap = iwl_mvm_radiotap_put_tlv(skb,
221 IEEE80211_RADIOTAP_VENDOR_NAMESPACE,
222 sizeof(*radiotap) + vendor_data_len);
223
224 /* Intel OUI */
225 radiotap->oui[0] = 0xf6;
226 radiotap->oui[1] = 0x54;
227 radiotap->oui[2] = 0x25;
228 /* radiotap sniffer config sub-namespace */
229 radiotap->oui_subtype = 1;
230 radiotap->vendor_type = 0;
231
232 /* fill the data now */
233 memcpy(radiotap->data, &mvm->cur_aid, sizeof(mvm->cur_aid));
234
235 rx_status->flag |= RX_FLAG_RADIOTAP_TLV_AT_END;
236 }
237
238 /* iwl_mvm_pass_packet_to_mac80211 - passes the packet for mac80211 */
iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm * mvm,struct napi_struct * napi,struct sk_buff * skb,int queue,struct ieee80211_sta * sta)239 static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm,
240 struct napi_struct *napi,
241 struct sk_buff *skb, int queue,
242 struct ieee80211_sta *sta)
243 {
244 if (unlikely(iwl_mvm_check_pn(mvm, skb, queue, sta))) {
245 kfree_skb(skb);
246 return;
247 }
248
249 ieee80211_rx_napi(mvm->hw, sta, skb, napi);
250 }
251
iwl_mvm_get_signal_strength(struct iwl_mvm * mvm,struct ieee80211_rx_status * rx_status,u32 rate_n_flags,int energy_a,int energy_b)252 static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm,
253 struct ieee80211_rx_status *rx_status,
254 u32 rate_n_flags, int energy_a,
255 int energy_b)
256 {
257 int max_energy;
258 u32 rate_flags = rate_n_flags;
259
260 energy_a = energy_a ? -energy_a : S8_MIN;
261 energy_b = energy_b ? -energy_b : S8_MIN;
262 max_energy = max(energy_a, energy_b);
263
264 IWL_DEBUG_STATS(mvm, "energy In A %d B %d, and max %d\n",
265 energy_a, energy_b, max_energy);
266
267 rx_status->signal = max_energy;
268 rx_status->chains =
269 (rate_flags & RATE_MCS_ANT_AB_MSK) >> RATE_MCS_ANT_POS;
270 rx_status->chain_signal[0] = energy_a;
271 rx_status->chain_signal[1] = energy_b;
272 }
273
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)274 static int iwl_mvm_rx_mgmt_prot(struct ieee80211_sta *sta,
275 struct ieee80211_hdr *hdr,
276 struct iwl_rx_mpdu_desc *desc,
277 u32 status,
278 struct ieee80211_rx_status *stats)
279 {
280 struct wireless_dev *wdev;
281 struct iwl_mvm_sta *mvmsta;
282 struct iwl_mvm_vif *mvmvif;
283 u8 keyid;
284 struct ieee80211_key_conf *key;
285 u32 len = le16_to_cpu(desc->mpdu_len);
286 const u8 *frame = (void *)hdr;
287
288 if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) == IWL_RX_MPDU_STATUS_SEC_NONE)
289 return 0;
290
291 /*
292 * For non-beacon, we don't really care. But beacons may
293 * be filtered out, and we thus need the firmware's replay
294 * detection, otherwise beacons the firmware previously
295 * filtered could be replayed, or something like that, and
296 * it can filter a lot - though usually only if nothing has
297 * changed.
298 */
299 if (!ieee80211_is_beacon(hdr->frame_control))
300 return 0;
301
302 if (!sta)
303 return -1;
304
305 mvmsta = iwl_mvm_sta_from_mac80211(sta);
306 mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
307
308 /* key mismatch - will also report !MIC_OK but we shouldn't count it */
309 if (!(status & IWL_RX_MPDU_STATUS_KEY_VALID))
310 goto report;
311
312 /* good cases */
313 if (likely(status & IWL_RX_MPDU_STATUS_MIC_OK &&
314 !(status & IWL_RX_MPDU_STATUS_REPLAY_ERROR))) {
315 stats->flag |= RX_FLAG_DECRYPTED;
316 return 0;
317 }
318
319 /*
320 * both keys will have the same cipher and MIC length, use
321 * whichever one is available
322 */
323 key = rcu_dereference(mvmvif->bcn_prot.keys[0]);
324 if (!key) {
325 key = rcu_dereference(mvmvif->bcn_prot.keys[1]);
326 if (!key)
327 goto report;
328 }
329
330 if (len < key->icv_len + IEEE80211_GMAC_PN_LEN + 2)
331 goto report;
332
333 /* get the real key ID */
334 keyid = frame[len - key->icv_len - IEEE80211_GMAC_PN_LEN - 2];
335 /* and if that's the other key, look it up */
336 if (keyid != key->keyidx) {
337 /*
338 * shouldn't happen since firmware checked, but be safe
339 * in case the MIC length is wrong too, for example
340 */
341 if (keyid != 6 && keyid != 7)
342 return -1;
343 key = rcu_dereference(mvmvif->bcn_prot.keys[keyid - 6]);
344 if (!key)
345 goto report;
346 }
347
348 /* Report status to mac80211 */
349 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
350 ieee80211_key_mic_failure(key);
351 else if (status & IWL_RX_MPDU_STATUS_REPLAY_ERROR)
352 ieee80211_key_replay(key);
353 report:
354 wdev = ieee80211_vif_to_wdev(mvmsta->vif);
355 if (wdev->netdev)
356 cfg80211_rx_unprot_mlme_mgmt(wdev->netdev, (void *)hdr, len);
357
358 return -1;
359 }
360
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)361 static int iwl_mvm_rx_crypto(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
362 struct ieee80211_hdr *hdr,
363 struct ieee80211_rx_status *stats, u16 phy_info,
364 struct iwl_rx_mpdu_desc *desc,
365 u32 pkt_flags, int queue, u8 *crypt_len)
366 {
367 u32 status = le32_to_cpu(desc->status);
368
369 /*
370 * Drop UNKNOWN frames in aggregation, unless in monitor mode
371 * (where we don't have the keys).
372 * We limit this to aggregation because in TKIP this is a valid
373 * scenario, since we may not have the (correct) TTAK (phase 1
374 * key) in the firmware.
375 */
376 if (phy_info & IWL_RX_MPDU_PHY_AMPDU &&
377 (status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
378 IWL_RX_MPDU_STATUS_SEC_UNKNOWN && !mvm->monitor_on) {
379 IWL_DEBUG_DROP(mvm, "Dropping packets, bad enc status\n");
380 return -1;
381 }
382
383 if (unlikely(ieee80211_is_mgmt(hdr->frame_control) &&
384 !ieee80211_has_protected(hdr->frame_control)))
385 return iwl_mvm_rx_mgmt_prot(sta, hdr, desc, status, stats);
386
387 if (!ieee80211_has_protected(hdr->frame_control) ||
388 (status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
389 IWL_RX_MPDU_STATUS_SEC_NONE)
390 return 0;
391
392 /* TODO: handle packets encrypted with unknown alg */
393 #if defined(__FreeBSD__)
394 /* XXX-BZ do similar to rx.c for now as these are plenty. */
395 if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
396 IWL_RX_MPDU_STATUS_SEC_ENC_ERR)
397 return (0);
398 #endif
399
400 switch (status & IWL_RX_MPDU_STATUS_SEC_MASK) {
401 case IWL_RX_MPDU_STATUS_SEC_CCM:
402 case IWL_RX_MPDU_STATUS_SEC_GCM:
403 BUILD_BUG_ON(IEEE80211_CCMP_PN_LEN != IEEE80211_GCMP_PN_LEN);
404 /* alg is CCM: check MIC only */
405 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK)) {
406 IWL_DEBUG_DROP(mvm,
407 "Dropping packet, bad MIC (CCM/GCM)\n");
408 return -1;
409 }
410
411 stats->flag |= RX_FLAG_DECRYPTED | RX_FLAG_MIC_STRIPPED;
412 *crypt_len = IEEE80211_CCMP_HDR_LEN;
413 return 0;
414 case IWL_RX_MPDU_STATUS_SEC_TKIP:
415 /* Don't drop the frame and decrypt it in SW */
416 if (!fw_has_api(&mvm->fw->ucode_capa,
417 IWL_UCODE_TLV_API_DEPRECATE_TTAK) &&
418 !(status & IWL_RX_MPDU_RES_STATUS_TTAK_OK))
419 return 0;
420
421 if (mvm->trans->trans_cfg->gen2 &&
422 !(status & RX_MPDU_RES_STATUS_MIC_OK))
423 stats->flag |= RX_FLAG_MMIC_ERROR;
424
425 *crypt_len = IEEE80211_TKIP_IV_LEN;
426 fallthrough;
427 case IWL_RX_MPDU_STATUS_SEC_WEP:
428 if (!(status & IWL_RX_MPDU_STATUS_ICV_OK))
429 return -1;
430
431 stats->flag |= RX_FLAG_DECRYPTED;
432 if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
433 IWL_RX_MPDU_STATUS_SEC_WEP)
434 *crypt_len = IEEE80211_WEP_IV_LEN;
435
436 if (pkt_flags & FH_RSCSR_RADA_EN) {
437 stats->flag |= RX_FLAG_ICV_STRIPPED;
438 if (mvm->trans->trans_cfg->gen2)
439 stats->flag |= RX_FLAG_MMIC_STRIPPED;
440 }
441
442 return 0;
443 case IWL_RX_MPDU_STATUS_SEC_EXT_ENC:
444 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
445 return -1;
446 stats->flag |= RX_FLAG_DECRYPTED;
447 return 0;
448 case RX_MPDU_RES_STATUS_SEC_CMAC_GMAC_ENC:
449 break;
450 default:
451 /*
452 * Sometimes we can get frames that were not decrypted
453 * because the firmware didn't have the keys yet. This can
454 * happen after connection where we can get multicast frames
455 * before the GTK is installed.
456 * Silently drop those frames.
457 * Also drop un-decrypted frames in monitor mode.
458 */
459 if (!is_multicast_ether_addr(hdr->addr1) &&
460 !mvm->monitor_on && net_ratelimit())
461 #if defined(__linux__)
462 IWL_WARN(mvm, "Unhandled alg: 0x%x\n", status);
463 #elif defined(__FreeBSD__)
464 IWL_WARN(mvm, "%s: Unhandled alg: 0x%x\n", __func__, status);
465 #endif
466 }
467
468 return 0;
469 }
470
iwl_mvm_rx_csum(struct iwl_mvm * mvm,struct ieee80211_sta * sta,struct sk_buff * skb,struct iwl_rx_packet * pkt)471 static void iwl_mvm_rx_csum(struct iwl_mvm *mvm,
472 struct ieee80211_sta *sta,
473 struct sk_buff *skb,
474 struct iwl_rx_packet *pkt)
475 {
476 struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
477
478 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
479 if (pkt->len_n_flags & cpu_to_le32(FH_RSCSR_RPA_EN)) {
480 u16 hwsum = be16_to_cpu(desc->v3.raw_xsum);
481
482 skb->ip_summed = CHECKSUM_COMPLETE;
483 skb->csum = csum_unfold(~(__force __sum16)hwsum);
484 }
485 } else {
486 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
487 struct iwl_mvm_vif *mvmvif;
488 u16 flags = le16_to_cpu(desc->l3l4_flags);
489 u8 l3_prot = (u8)((flags & IWL_RX_L3L4_L3_PROTO_MASK) >>
490 IWL_RX_L3_PROTO_POS);
491
492 mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
493
494 if (mvmvif->features & NETIF_F_RXCSUM &&
495 flags & IWL_RX_L3L4_TCP_UDP_CSUM_OK &&
496 (flags & IWL_RX_L3L4_IP_HDR_CSUM_OK ||
497 l3_prot == IWL_RX_L3_TYPE_IPV6 ||
498 l3_prot == IWL_RX_L3_TYPE_IPV6_FRAG))
499 skb->ip_summed = CHECKSUM_UNNECESSARY;
500 }
501 }
502
503 /*
504 * returns true if a packet is a duplicate or invalid tid and should be dropped.
505 * Updates AMSDU PN tracking info
506 */
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)507 static bool iwl_mvm_is_dup(struct ieee80211_sta *sta, int queue,
508 struct ieee80211_rx_status *rx_status,
509 struct ieee80211_hdr *hdr,
510 struct iwl_rx_mpdu_desc *desc)
511 {
512 struct iwl_mvm_sta *mvm_sta;
513 struct iwl_mvm_rxq_dup_data *dup_data;
514 u8 tid, sub_frame_idx;
515
516 if (WARN_ON(IS_ERR_OR_NULL(sta)))
517 return false;
518
519 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
520
521 if (WARN_ON_ONCE(!mvm_sta->dup_data))
522 return false;
523
524 dup_data = &mvm_sta->dup_data[queue];
525
526 /*
527 * Drop duplicate 802.11 retransmissions
528 * (IEEE 802.11-2012: 9.3.2.10 "Duplicate detection and recovery")
529 */
530 if (ieee80211_is_ctl(hdr->frame_control) ||
531 ieee80211_is_any_nullfunc(hdr->frame_control) ||
532 is_multicast_ether_addr(hdr->addr1))
533 return false;
534
535 if (ieee80211_is_data_qos(hdr->frame_control)) {
536 /* frame has qos control */
537 tid = ieee80211_get_tid(hdr);
538 if (tid >= IWL_MAX_TID_COUNT)
539 return true;
540 } else {
541 tid = IWL_MAX_TID_COUNT;
542 }
543
544 /* If this wasn't a part of an A-MSDU the sub-frame index will be 0 */
545 sub_frame_idx = desc->amsdu_info &
546 IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
547
548 if (unlikely(ieee80211_has_retry(hdr->frame_control) &&
549 dup_data->last_seq[tid] == hdr->seq_ctrl &&
550 dup_data->last_sub_frame[tid] >= sub_frame_idx))
551 return true;
552
553 /* Allow same PN as the first subframe for following sub frames */
554 if (dup_data->last_seq[tid] == hdr->seq_ctrl &&
555 sub_frame_idx > dup_data->last_sub_frame[tid] &&
556 desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU)
557 rx_status->flag |= RX_FLAG_ALLOW_SAME_PN;
558
559 dup_data->last_seq[tid] = hdr->seq_ctrl;
560 dup_data->last_sub_frame[tid] = sub_frame_idx;
561
562 rx_status->flag |= RX_FLAG_DUP_VALIDATED;
563
564 return false;
565 }
566
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)567 static void iwl_mvm_release_frames(struct iwl_mvm *mvm,
568 struct ieee80211_sta *sta,
569 struct napi_struct *napi,
570 struct iwl_mvm_baid_data *baid_data,
571 struct iwl_mvm_reorder_buffer *reorder_buf,
572 u16 nssn)
573 {
574 struct iwl_mvm_reorder_buf_entry *entries =
575 &baid_data->entries[reorder_buf->queue *
576 baid_data->entries_per_queue];
577 u16 ssn = reorder_buf->head_sn;
578
579 lockdep_assert_held(&reorder_buf->lock);
580
581 while (ieee80211_sn_less(ssn, nssn)) {
582 int index = ssn % baid_data->buf_size;
583 struct sk_buff_head *skb_list = &entries[index].frames;
584 struct sk_buff *skb;
585
586 ssn = ieee80211_sn_inc(ssn);
587
588 /*
589 * Empty the list. Will have more than one frame for A-MSDU.
590 * Empty list is valid as well since nssn indicates frames were
591 * received.
592 */
593 while ((skb = __skb_dequeue(skb_list))) {
594 iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb,
595 reorder_buf->queue,
596 sta);
597 reorder_buf->num_stored--;
598 }
599 }
600 reorder_buf->head_sn = nssn;
601 }
602
iwl_mvm_del_ba(struct iwl_mvm * mvm,int queue,struct iwl_mvm_delba_data * data)603 static void iwl_mvm_del_ba(struct iwl_mvm *mvm, int queue,
604 struct iwl_mvm_delba_data *data)
605 {
606 struct iwl_mvm_baid_data *ba_data;
607 struct ieee80211_sta *sta;
608 struct iwl_mvm_reorder_buffer *reorder_buf;
609 u8 baid = data->baid;
610 u32 sta_id;
611
612 if (WARN_ONCE(baid >= IWL_MAX_BAID, "invalid BAID: %x\n", baid))
613 return;
614
615 rcu_read_lock();
616
617 ba_data = rcu_dereference(mvm->baid_map[baid]);
618 if (WARN_ON_ONCE(!ba_data))
619 goto out;
620
621 /* pick any STA ID to find the pointer */
622 sta_id = ffs(ba_data->sta_mask) - 1;
623 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
624 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
625 goto out;
626
627 reorder_buf = &ba_data->reorder_buf[queue];
628
629 /* release all frames that are in the reorder buffer to the stack */
630 spin_lock_bh(&reorder_buf->lock);
631 iwl_mvm_release_frames(mvm, sta, NULL, ba_data, reorder_buf,
632 ieee80211_sn_add(reorder_buf->head_sn,
633 ba_data->buf_size));
634 spin_unlock_bh(&reorder_buf->lock);
635
636 out:
637 rcu_read_unlock();
638 }
639
iwl_mvm_release_frames_from_notif(struct iwl_mvm * mvm,struct napi_struct * napi,u8 baid,u16 nssn,int queue)640 static void iwl_mvm_release_frames_from_notif(struct iwl_mvm *mvm,
641 struct napi_struct *napi,
642 u8 baid, u16 nssn, int queue)
643 {
644 struct ieee80211_sta *sta;
645 struct iwl_mvm_reorder_buffer *reorder_buf;
646 struct iwl_mvm_baid_data *ba_data;
647 u32 sta_id;
648
649 IWL_DEBUG_HT(mvm, "Frame release notification for BAID %u, NSSN %d\n",
650 baid, nssn);
651
652 if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID ||
653 baid >= ARRAY_SIZE(mvm->baid_map)))
654 return;
655
656 rcu_read_lock();
657
658 ba_data = rcu_dereference(mvm->baid_map[baid]);
659 if (WARN(!ba_data, "BAID %d not found in map\n", baid))
660 goto out;
661
662 /* pick any STA ID to find the pointer */
663 sta_id = ffs(ba_data->sta_mask) - 1;
664 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
665 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
666 goto out;
667
668 reorder_buf = &ba_data->reorder_buf[queue];
669
670 spin_lock_bh(&reorder_buf->lock);
671 iwl_mvm_release_frames(mvm, sta, napi, ba_data,
672 reorder_buf, nssn);
673 spin_unlock_bh(&reorder_buf->lock);
674
675 out:
676 rcu_read_unlock();
677 }
678
iwl_mvm_rx_queue_notif(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)679 void iwl_mvm_rx_queue_notif(struct iwl_mvm *mvm, struct napi_struct *napi,
680 struct iwl_rx_cmd_buffer *rxb, int queue)
681 {
682 struct iwl_rx_packet *pkt = rxb_addr(rxb);
683 struct iwl_rxq_sync_notification *notif;
684 struct iwl_mvm_internal_rxq_notif *internal_notif;
685 u32 len = iwl_rx_packet_payload_len(pkt);
686
687 notif = (void *)pkt->data;
688 internal_notif = (void *)notif->payload;
689
690 if (WARN_ONCE(len < sizeof(*notif) + sizeof(*internal_notif),
691 "invalid notification size %d (%d)",
692 len, (int)(sizeof(*notif) + sizeof(*internal_notif))))
693 return;
694 len -= sizeof(*notif) + sizeof(*internal_notif);
695
696 if (WARN_ONCE(internal_notif->sync &&
697 mvm->queue_sync_cookie != internal_notif->cookie,
698 "Received expired RX queue sync message (cookie %d but wanted %d, queue %d)\n",
699 internal_notif->cookie, mvm->queue_sync_cookie, queue))
700 return;
701
702 switch (internal_notif->type) {
703 case IWL_MVM_RXQ_EMPTY:
704 WARN_ONCE(len, "invalid empty notification size %d", len);
705 break;
706 case IWL_MVM_RXQ_NOTIF_DEL_BA:
707 if (WARN_ONCE(len != sizeof(struct iwl_mvm_delba_data),
708 "invalid delba notification size %d (%d)",
709 len, (int)sizeof(struct iwl_mvm_delba_data)))
710 break;
711 iwl_mvm_del_ba(mvm, queue, (void *)internal_notif->data);
712 break;
713 default:
714 WARN_ONCE(1, "Invalid identifier %d", internal_notif->type);
715 }
716
717 if (internal_notif->sync) {
718 WARN_ONCE(!test_and_clear_bit(queue, &mvm->queue_sync_state),
719 "queue sync: queue %d responded a second time!\n",
720 queue);
721 if (READ_ONCE(mvm->queue_sync_state) == 0)
722 wake_up(&mvm->rx_sync_waitq);
723 }
724 }
725
726 /*
727 * Returns true if the MPDU was buffered\dropped, false if it should be passed
728 * to upper layer.
729 */
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)730 static bool iwl_mvm_reorder(struct iwl_mvm *mvm,
731 struct napi_struct *napi,
732 int queue,
733 struct ieee80211_sta *sta,
734 struct sk_buff *skb,
735 struct iwl_rx_mpdu_desc *desc)
736 {
737 struct ieee80211_hdr *hdr = (void *)skb_mac_header(skb);
738 struct iwl_mvm_baid_data *baid_data;
739 struct iwl_mvm_reorder_buffer *buffer;
740 u32 reorder = le32_to_cpu(desc->reorder_data);
741 bool amsdu = desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU;
742 bool last_subframe =
743 desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME;
744 #if defined(__linux__)
745 u8 tid = ieee80211_get_tid(hdr);
746 #elif defined(__FreeBSD__)
747 u8 tid;
748 #endif
749 u8 sub_frame_idx = desc->amsdu_info &
750 IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
751 struct iwl_mvm_reorder_buf_entry *entries;
752 u32 sta_mask;
753 int index;
754 u16 nssn, sn;
755 u8 baid;
756
757 baid = (reorder & IWL_RX_MPDU_REORDER_BAID_MASK) >>
758 IWL_RX_MPDU_REORDER_BAID_SHIFT;
759
760 if (mvm->trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_9000)
761 return false;
762
763 /*
764 * This also covers the case of receiving a Block Ack Request
765 * outside a BA session; we'll pass it to mac80211 and that
766 * then sends a delBA action frame.
767 * This also covers pure monitor mode, in which case we won't
768 * have any BA sessions.
769 */
770 if (baid == IWL_RX_REORDER_DATA_INVALID_BAID)
771 return false;
772
773 /* no sta yet */
774 if (WARN_ONCE(IS_ERR_OR_NULL(sta),
775 "Got valid BAID without a valid station assigned\n"))
776 return false;
777
778 /* not a data packet or a bar */
779 if (!ieee80211_is_back_req(hdr->frame_control) &&
780 (!ieee80211_is_data_qos(hdr->frame_control) ||
781 is_multicast_ether_addr(hdr->addr1)))
782 return false;
783
784 if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
785 return false;
786
787 baid_data = rcu_dereference(mvm->baid_map[baid]);
788 if (!baid_data) {
789 IWL_DEBUG_RX(mvm,
790 "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
791 baid, reorder);
792 return false;
793 }
794
795 #if defined(__FreeBSD__)
796 tid = ieee80211_get_tid(hdr);
797 #endif
798 rcu_read_lock();
799 sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1);
800 rcu_read_unlock();
801
802 if (IWL_FW_CHECK(mvm,
803 tid != baid_data->tid ||
804 !(sta_mask & baid_data->sta_mask),
805 "baid 0x%x is mapped to sta_mask:0x%x tid:%d, but was received for sta_mask:0x%x tid:%d\n",
806 baid, baid_data->sta_mask, baid_data->tid,
807 sta_mask, tid))
808 return false;
809
810 nssn = reorder & IWL_RX_MPDU_REORDER_NSSN_MASK;
811 sn = (reorder & IWL_RX_MPDU_REORDER_SN_MASK) >>
812 IWL_RX_MPDU_REORDER_SN_SHIFT;
813
814 buffer = &baid_data->reorder_buf[queue];
815 entries = &baid_data->entries[queue * baid_data->entries_per_queue];
816
817 spin_lock_bh(&buffer->lock);
818
819 if (!buffer->valid) {
820 if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN) {
821 spin_unlock_bh(&buffer->lock);
822 return false;
823 }
824 buffer->valid = true;
825 }
826
827 /* drop any duplicated packets */
828 if (desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_DUPLICATE))
829 goto drop;
830
831 /* drop any oudated packets */
832 if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN)
833 goto drop;
834
835 /* release immediately if allowed by nssn and no stored frames */
836 if (!buffer->num_stored && ieee80211_sn_less(sn, nssn)) {
837 if (!amsdu || last_subframe)
838 buffer->head_sn = nssn;
839 /* No need to update AMSDU last SN - we are moving the head */
840 spin_unlock_bh(&buffer->lock);
841 return false;
842 }
843
844 /*
845 * release immediately if there are no stored frames, and the sn is
846 * equal to the head.
847 * This can happen due to reorder timer, where NSSN is behind head_sn.
848 * When we released everything, and we got the next frame in the
849 * sequence, according to the NSSN we can't release immediately,
850 * while technically there is no hole and we can move forward.
851 */
852 if (!buffer->num_stored && sn == buffer->head_sn) {
853 if (!amsdu || last_subframe)
854 buffer->head_sn = ieee80211_sn_inc(buffer->head_sn);
855
856 /* No need to update AMSDU last SN - we are moving the head */
857 spin_unlock_bh(&buffer->lock);
858 return false;
859 }
860
861 /* put in reorder buffer */
862 index = sn % baid_data->buf_size;
863 __skb_queue_tail(&entries[index].frames, skb);
864 buffer->num_stored++;
865
866 if (amsdu) {
867 buffer->last_amsdu = sn;
868 buffer->last_sub_index = sub_frame_idx;
869 }
870
871 /*
872 * We cannot trust NSSN for AMSDU sub-frames that are not the last.
873 * The reason is that NSSN advances on the first sub-frame, and may
874 * cause the reorder buffer to advance before all the sub-frames arrive.
875 * Example: reorder buffer contains SN 0 & 2, and we receive AMSDU with
876 * SN 1. NSSN for first sub frame will be 3 with the result of driver
877 * releasing SN 0,1, 2. When sub-frame 1 arrives - reorder buffer is
878 * already ahead and it will be dropped.
879 * If the last sub-frame is not on this queue - we will get frame
880 * release notification with up to date NSSN.
881 */
882 if (!amsdu || last_subframe)
883 iwl_mvm_release_frames(mvm, sta, napi, baid_data,
884 buffer, nssn);
885
886 spin_unlock_bh(&buffer->lock);
887 return true;
888
889 drop:
890 kfree_skb(skb);
891 spin_unlock_bh(&buffer->lock);
892 return true;
893 }
894
iwl_mvm_agg_rx_received(struct iwl_mvm * mvm,u32 reorder_data,u8 baid)895 static void iwl_mvm_agg_rx_received(struct iwl_mvm *mvm,
896 u32 reorder_data, u8 baid)
897 {
898 unsigned long now = jiffies;
899 unsigned long timeout;
900 struct iwl_mvm_baid_data *data;
901
902 rcu_read_lock();
903
904 data = rcu_dereference(mvm->baid_map[baid]);
905 if (!data) {
906 IWL_DEBUG_RX(mvm,
907 "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
908 baid, reorder_data);
909 goto out;
910 }
911
912 if (!data->timeout)
913 goto out;
914
915 timeout = data->timeout;
916 /*
917 * Do not update last rx all the time to avoid cache bouncing
918 * between the rx queues.
919 * Update it every timeout. Worst case is the session will
920 * expire after ~ 2 * timeout, which doesn't matter that much.
921 */
922 if (time_before(data->last_rx + TU_TO_JIFFIES(timeout), now))
923 /* Update is atomic */
924 data->last_rx = now;
925
926 out:
927 rcu_read_unlock();
928 }
929
iwl_mvm_flip_address(u8 * addr)930 static void iwl_mvm_flip_address(u8 *addr)
931 {
932 int i;
933 u8 mac_addr[ETH_ALEN];
934
935 for (i = 0; i < ETH_ALEN; i++)
936 mac_addr[i] = addr[ETH_ALEN - i - 1];
937 ether_addr_copy(addr, mac_addr);
938 }
939
940 struct iwl_mvm_rx_phy_data {
941 enum iwl_rx_phy_info_type info_type;
942 __le32 d0, d1, d2, d3, eht_d4, d5;
943 __le16 d4;
944 bool with_data;
945 bool first_subframe;
946 __le32 rx_vec[4];
947
948 u32 rate_n_flags;
949 u32 gp2_on_air_rise;
950 u16 phy_info;
951 u8 energy_a, energy_b;
952 u8 channel;
953 };
954
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)955 static void iwl_mvm_decode_he_mu_ext(struct iwl_mvm *mvm,
956 struct iwl_mvm_rx_phy_data *phy_data,
957 struct ieee80211_radiotap_he_mu *he_mu)
958 {
959 u32 phy_data2 = le32_to_cpu(phy_data->d2);
960 u32 phy_data3 = le32_to_cpu(phy_data->d3);
961 u16 phy_data4 = le16_to_cpu(phy_data->d4);
962 u32 rate_n_flags = phy_data->rate_n_flags;
963
964 if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CRC_OK, phy_data4)) {
965 he_mu->flags1 |=
966 cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_RU_KNOWN |
967 IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU_KNOWN);
968
969 he_mu->flags1 |=
970 le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CTR_RU,
971 phy_data4),
972 IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU);
973
974 he_mu->ru_ch1[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU0,
975 phy_data2);
976 he_mu->ru_ch1[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU1,
977 phy_data3);
978 he_mu->ru_ch1[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU2,
979 phy_data2);
980 he_mu->ru_ch1[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU3,
981 phy_data3);
982 }
983
984 if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CRC_OK, phy_data4) &&
985 (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) != RATE_MCS_CHAN_WIDTH_20) {
986 he_mu->flags1 |=
987 cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_RU_KNOWN |
988 IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_CTR_26T_RU_KNOWN);
989
990 he_mu->flags2 |=
991 le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CTR_RU,
992 phy_data4),
993 IEEE80211_RADIOTAP_HE_MU_FLAGS2_CH2_CTR_26T_RU);
994
995 he_mu->ru_ch2[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU0,
996 phy_data2);
997 he_mu->ru_ch2[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU1,
998 phy_data3);
999 he_mu->ru_ch2[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU2,
1000 phy_data2);
1001 he_mu->ru_ch2[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU3,
1002 phy_data3);
1003 }
1004 }
1005
1006 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)1007 iwl_mvm_decode_he_phy_ru_alloc(struct iwl_mvm_rx_phy_data *phy_data,
1008 struct ieee80211_radiotap_he *he,
1009 struct ieee80211_radiotap_he_mu *he_mu,
1010 struct ieee80211_rx_status *rx_status)
1011 {
1012 /*
1013 * Unfortunately, we have to leave the mac80211 data
1014 * incorrect for the case that we receive an HE-MU
1015 * transmission and *don't* have the HE phy data (due
1016 * to the bits being used for TSF). This shouldn't
1017 * happen though as management frames where we need
1018 * the TSF/timers are not be transmitted in HE-MU.
1019 */
1020 u8 ru = le32_get_bits(phy_data->d1, IWL_RX_PHY_DATA1_HE_RU_ALLOC_MASK);
1021 u32 rate_n_flags = phy_data->rate_n_flags;
1022 u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK_V1;
1023 u8 offs = 0;
1024
1025 rx_status->bw = RATE_INFO_BW_HE_RU;
1026
1027 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
1028
1029 switch (ru) {
1030 case 0 ... 36:
1031 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26;
1032 offs = ru;
1033 break;
1034 case 37 ... 52:
1035 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52;
1036 offs = ru - 37;
1037 break;
1038 case 53 ... 60:
1039 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
1040 offs = ru - 53;
1041 break;
1042 case 61 ... 64:
1043 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242;
1044 offs = ru - 61;
1045 break;
1046 case 65 ... 66:
1047 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484;
1048 offs = ru - 65;
1049 break;
1050 case 67:
1051 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996;
1052 break;
1053 case 68:
1054 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996;
1055 break;
1056 }
1057 he->data2 |= le16_encode_bits(offs,
1058 IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET);
1059 he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_KNOWN |
1060 IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET_KNOWN);
1061 if (phy_data->d1 & cpu_to_le32(IWL_RX_PHY_DATA1_HE_RU_ALLOC_SEC80))
1062 he->data2 |=
1063 cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_SEC);
1064
1065 #define CHECK_BW(bw) \
1066 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_ ## bw ## MHZ != \
1067 RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS); \
1068 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_ ## bw ## MHZ != \
1069 RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS)
1070 CHECK_BW(20);
1071 CHECK_BW(40);
1072 CHECK_BW(80);
1073 CHECK_BW(160);
1074
1075 if (he_mu)
1076 he_mu->flags2 |=
1077 le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK_V1,
1078 rate_n_flags),
1079 IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW);
1080 else if (he_type == RATE_MCS_HE_TYPE_TRIG_V1)
1081 he->data6 |=
1082 cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_KNOWN) |
1083 le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK_V1,
1084 rate_n_flags),
1085 IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW);
1086 }
1087
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)1088 static void iwl_mvm_decode_he_phy_data(struct iwl_mvm *mvm,
1089 struct iwl_mvm_rx_phy_data *phy_data,
1090 struct ieee80211_radiotap_he *he,
1091 struct ieee80211_radiotap_he_mu *he_mu,
1092 struct ieee80211_rx_status *rx_status,
1093 int queue)
1094 {
1095 switch (phy_data->info_type) {
1096 case IWL_RX_PHY_INFO_TYPE_NONE:
1097 case IWL_RX_PHY_INFO_TYPE_CCK:
1098 case IWL_RX_PHY_INFO_TYPE_OFDM_LGCY:
1099 case IWL_RX_PHY_INFO_TYPE_HT:
1100 case IWL_RX_PHY_INFO_TYPE_VHT_SU:
1101 case IWL_RX_PHY_INFO_TYPE_VHT_MU:
1102 case IWL_RX_PHY_INFO_TYPE_EHT_MU:
1103 case IWL_RX_PHY_INFO_TYPE_EHT_TB:
1104 case IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT:
1105 case IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT:
1106 return;
1107 case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1108 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN |
1109 IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE2_KNOWN |
1110 IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE3_KNOWN |
1111 IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE4_KNOWN);
1112 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1113 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE1),
1114 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE1);
1115 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1116 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE2),
1117 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE2);
1118 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1119 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE3),
1120 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE3);
1121 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1122 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE4),
1123 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE4);
1124 fallthrough;
1125 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1126 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1127 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1128 case IWL_RX_PHY_INFO_TYPE_HE_TB:
1129 /* HE common */
1130 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_LDPC_XSYMSEG_KNOWN |
1131 IEEE80211_RADIOTAP_HE_DATA1_DOPPLER_KNOWN |
1132 IEEE80211_RADIOTAP_HE_DATA1_BSS_COLOR_KNOWN);
1133 he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRE_FEC_PAD_KNOWN |
1134 IEEE80211_RADIOTAP_HE_DATA2_PE_DISAMBIG_KNOWN |
1135 IEEE80211_RADIOTAP_HE_DATA2_TXOP_KNOWN |
1136 IEEE80211_RADIOTAP_HE_DATA2_NUM_LTF_SYMS_KNOWN);
1137 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1138 IWL_RX_PHY_DATA0_HE_BSS_COLOR_MASK),
1139 IEEE80211_RADIOTAP_HE_DATA3_BSS_COLOR);
1140 if (phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB &&
1141 phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB_EXT) {
1142 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_UL_DL_KNOWN);
1143 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1144 IWL_RX_PHY_DATA0_HE_UPLINK),
1145 IEEE80211_RADIOTAP_HE_DATA3_UL_DL);
1146 }
1147 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1148 IWL_RX_PHY_DATA0_HE_LDPC_EXT_SYM),
1149 IEEE80211_RADIOTAP_HE_DATA3_LDPC_XSYMSEG);
1150 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1151 IWL_RX_PHY_DATA0_HE_PRE_FEC_PAD_MASK),
1152 IEEE80211_RADIOTAP_HE_DATA5_PRE_FEC_PAD);
1153 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1154 IWL_RX_PHY_DATA0_HE_PE_DISAMBIG),
1155 IEEE80211_RADIOTAP_HE_DATA5_PE_DISAMBIG);
1156 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d1,
1157 IWL_RX_PHY_DATA1_HE_LTF_NUM_MASK),
1158 IEEE80211_RADIOTAP_HE_DATA5_NUM_LTF_SYMS);
1159 he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1160 IWL_RX_PHY_DATA0_HE_TXOP_DUR_MASK),
1161 IEEE80211_RADIOTAP_HE_DATA6_TXOP);
1162 he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1163 IWL_RX_PHY_DATA0_HE_DOPPLER),
1164 IEEE80211_RADIOTAP_HE_DATA6_DOPPLER);
1165 break;
1166 }
1167
1168 switch (phy_data->info_type) {
1169 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1170 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1171 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1172 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN);
1173 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1174 IWL_RX_PHY_DATA0_HE_SPATIAL_REUSE_MASK),
1175 IEEE80211_RADIOTAP_HE_DATA4_SU_MU_SPTL_REUSE);
1176 break;
1177 default:
1178 /* nothing here */
1179 break;
1180 }
1181
1182 switch (phy_data->info_type) {
1183 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1184 he_mu->flags1 |=
1185 le16_encode_bits(le16_get_bits(phy_data->d4,
1186 IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_DCM),
1187 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM);
1188 he_mu->flags1 |=
1189 le16_encode_bits(le16_get_bits(phy_data->d4,
1190 IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_MCS_MASK),
1191 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS);
1192 he_mu->flags2 |=
1193 le16_encode_bits(le16_get_bits(phy_data->d4,
1194 IWL_RX_PHY_DATA4_HE_MU_EXT_PREAMBLE_PUNC_TYPE_MASK),
1195 IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW);
1196 iwl_mvm_decode_he_mu_ext(mvm, phy_data, he_mu);
1197 fallthrough;
1198 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1199 he_mu->flags2 |=
1200 le16_encode_bits(le32_get_bits(phy_data->d1,
1201 IWL_RX_PHY_DATA1_HE_MU_SIBG_SYM_OR_USER_NUM_MASK),
1202 IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_SYMS_USERS);
1203 he_mu->flags2 |=
1204 le16_encode_bits(le32_get_bits(phy_data->d1,
1205 IWL_RX_PHY_DATA1_HE_MU_SIGB_COMPRESSION),
1206 IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_COMP);
1207 fallthrough;
1208 case IWL_RX_PHY_INFO_TYPE_HE_TB:
1209 case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1210 iwl_mvm_decode_he_phy_ru_alloc(phy_data, he, he_mu, rx_status);
1211 break;
1212 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1213 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BEAM_CHANGE_KNOWN);
1214 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1215 IWL_RX_PHY_DATA0_HE_BEAM_CHNG),
1216 IEEE80211_RADIOTAP_HE_DATA3_BEAM_CHANGE);
1217 break;
1218 default:
1219 /* nothing */
1220 break;
1221 }
1222 }
1223
1224 #define LE32_DEC_ENC(value, dec_bits, enc_bits) \
1225 le32_encode_bits(le32_get_bits(value, dec_bits), enc_bits)
1226
1227 #define IWL_MVM_ENC_USIG_VALUE_MASK(usig, in_value, dec_bits, enc_bits) do { \
1228 typeof(enc_bits) _enc_bits = enc_bits; \
1229 typeof(usig) _usig = usig; \
1230 (_usig)->mask |= cpu_to_le32(_enc_bits); \
1231 (_usig)->value |= LE32_DEC_ENC(in_value, dec_bits, _enc_bits); \
1232 } while (0)
1233
1234 #define __IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru) \
1235 eht->data[(rt_data)] |= \
1236 (cpu_to_le32 \
1237 (IEEE80211_RADIOTAP_EHT_DATA ## rt_data ## _RU_ALLOC_CC_ ## rt_ru ## _KNOWN) | \
1238 LE32_DEC_ENC(data ## fw_data, \
1239 IWL_RX_PHY_DATA ## fw_data ## _EHT_MU_EXT_RU_ALLOC_ ## fw_ru, \
1240 IEEE80211_RADIOTAP_EHT_DATA ## rt_data ## _RU_ALLOC_CC_ ## rt_ru))
1241
1242 #define _IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru) \
1243 __IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru)
1244
1245 #define IEEE80211_RADIOTAP_RU_DATA_1_1_1 1
1246 #define IEEE80211_RADIOTAP_RU_DATA_2_1_1 2
1247 #define IEEE80211_RADIOTAP_RU_DATA_1_1_2 2
1248 #define IEEE80211_RADIOTAP_RU_DATA_2_1_2 2
1249 #define IEEE80211_RADIOTAP_RU_DATA_1_2_1 3
1250 #define IEEE80211_RADIOTAP_RU_DATA_2_2_1 3
1251 #define IEEE80211_RADIOTAP_RU_DATA_1_2_2 3
1252 #define IEEE80211_RADIOTAP_RU_DATA_2_2_2 4
1253
1254 #define IWL_RX_RU_DATA_A1 2
1255 #define IWL_RX_RU_DATA_A2 2
1256 #define IWL_RX_RU_DATA_B1 2
1257 #define IWL_RX_RU_DATA_B2 4
1258 #define IWL_RX_RU_DATA_C1 3
1259 #define IWL_RX_RU_DATA_C2 3
1260 #define IWL_RX_RU_DATA_D1 4
1261 #define IWL_RX_RU_DATA_D2 4
1262
1263 #define IWL_MVM_ENC_EHT_RU(rt_ru, fw_ru) \
1264 _IWL_MVM_ENC_EHT_RU(IEEE80211_RADIOTAP_RU_DATA_ ## rt_ru, \
1265 rt_ru, \
1266 IWL_RX_RU_DATA_ ## fw_ru, \
1267 fw_ru)
1268
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)1269 static void iwl_mvm_decode_eht_ext_mu(struct iwl_mvm *mvm,
1270 struct iwl_mvm_rx_phy_data *phy_data,
1271 struct ieee80211_rx_status *rx_status,
1272 struct ieee80211_radiotap_eht *eht,
1273 struct ieee80211_radiotap_eht_usig *usig)
1274 {
1275 if (phy_data->with_data) {
1276 __le32 data1 = phy_data->d1;
1277 __le32 data2 = phy_data->d2;
1278 __le32 data3 = phy_data->d3;
1279 __le32 data4 = phy_data->eht_d4;
1280 __le32 data5 = phy_data->d5;
1281 u32 phy_bw = phy_data->rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK;
1282
1283 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1284 IWL_RX_PHY_DATA5_EHT_TYPE_AND_COMP,
1285 IEEE80211_RADIOTAP_EHT_USIG2_MU_B0_B1_PPDU_TYPE);
1286 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1287 IWL_RX_PHY_DATA5_EHT_MU_PUNC_CH_CODE,
1288 IEEE80211_RADIOTAP_EHT_USIG2_MU_B3_B7_PUNCTURED_INFO);
1289 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data4,
1290 IWL_RX_PHY_DATA4_EHT_MU_EXT_SIGB_MCS,
1291 IEEE80211_RADIOTAP_EHT_USIG2_MU_B9_B10_SIG_MCS);
1292 IWL_MVM_ENC_USIG_VALUE_MASK
1293 (usig, data1, IWL_RX_PHY_DATA1_EHT_MU_NUM_SIG_SYM_USIGA2,
1294 IEEE80211_RADIOTAP_EHT_USIG2_MU_B11_B15_EHT_SIG_SYMBOLS);
1295
1296 eht->user_info[0] |=
1297 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_STA_ID_KNOWN) |
1298 LE32_DEC_ENC(data5, IWL_RX_PHY_DATA5_EHT_MU_STA_ID_USR,
1299 IEEE80211_RADIOTAP_EHT_USER_INFO_STA_ID);
1300
1301 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_NR_NON_OFDMA_USERS_M);
1302 eht->data[7] |= LE32_DEC_ENC
1303 (data5, IWL_RX_PHY_DATA5_EHT_MU_NUM_USR_NON_OFDMA,
1304 IEEE80211_RADIOTAP_EHT_DATA7_NUM_OF_NON_OFDMA_USERS);
1305
1306 /*
1307 * Hardware labels the content channels/RU allocation values
1308 * as follows:
1309 * Content Channel 1 Content Channel 2
1310 * 20 MHz: A1
1311 * 40 MHz: A1 B1
1312 * 80 MHz: A1 C1 B1 D1
1313 * 160 MHz: A1 C1 A2 C2 B1 D1 B2 D2
1314 * 320 MHz: A1 C1 A2 C2 A3 C3 A4 C4 B1 D1 B2 D2 B3 D3 B4 D4
1315 *
1316 * However firmware can only give us A1-D2, so the higher
1317 * frequencies are missing.
1318 */
1319
1320 switch (phy_bw) {
1321 case RATE_MCS_CHAN_WIDTH_320:
1322 /* additional values are missing in RX metadata */
1323 case RATE_MCS_CHAN_WIDTH_160:
1324 /* content channel 1 */
1325 IWL_MVM_ENC_EHT_RU(1_2_1, A2);
1326 IWL_MVM_ENC_EHT_RU(1_2_2, C2);
1327 /* content channel 2 */
1328 IWL_MVM_ENC_EHT_RU(2_2_1, B2);
1329 IWL_MVM_ENC_EHT_RU(2_2_2, D2);
1330 fallthrough;
1331 case RATE_MCS_CHAN_WIDTH_80:
1332 /* content channel 1 */
1333 IWL_MVM_ENC_EHT_RU(1_1_2, C1);
1334 /* content channel 2 */
1335 IWL_MVM_ENC_EHT_RU(2_1_2, D1);
1336 fallthrough;
1337 case RATE_MCS_CHAN_WIDTH_40:
1338 /* content channel 2 */
1339 IWL_MVM_ENC_EHT_RU(2_1_1, B1);
1340 fallthrough;
1341 case RATE_MCS_CHAN_WIDTH_20:
1342 IWL_MVM_ENC_EHT_RU(1_1_1, A1);
1343 break;
1344 }
1345 } else {
1346 __le32 usig_a1 = phy_data->rx_vec[0];
1347 __le32 usig_a2 = phy_data->rx_vec[1];
1348
1349 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
1350 IWL_RX_USIG_A1_DISREGARD,
1351 IEEE80211_RADIOTAP_EHT_USIG1_MU_B20_B24_DISREGARD);
1352 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
1353 IWL_RX_USIG_A1_VALIDATE,
1354 IEEE80211_RADIOTAP_EHT_USIG1_MU_B25_VALIDATE);
1355 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1356 IWL_RX_USIG_A2_EHT_PPDU_TYPE,
1357 IEEE80211_RADIOTAP_EHT_USIG2_MU_B0_B1_PPDU_TYPE);
1358 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1359 IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B2,
1360 IEEE80211_RADIOTAP_EHT_USIG2_MU_B2_VALIDATE);
1361 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1362 IWL_RX_USIG_A2_EHT_PUNC_CHANNEL,
1363 IEEE80211_RADIOTAP_EHT_USIG2_MU_B3_B7_PUNCTURED_INFO);
1364 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1365 IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B8,
1366 IEEE80211_RADIOTAP_EHT_USIG2_MU_B8_VALIDATE);
1367 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1368 IWL_RX_USIG_A2_EHT_SIG_MCS,
1369 IEEE80211_RADIOTAP_EHT_USIG2_MU_B9_B10_SIG_MCS);
1370 IWL_MVM_ENC_USIG_VALUE_MASK
1371 (usig, usig_a2, IWL_RX_USIG_A2_EHT_SIG_SYM_NUM,
1372 IEEE80211_RADIOTAP_EHT_USIG2_MU_B11_B15_EHT_SIG_SYMBOLS);
1373 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1374 IWL_RX_USIG_A2_EHT_CRC_OK,
1375 IEEE80211_RADIOTAP_EHT_USIG2_MU_B16_B19_CRC);
1376 }
1377 }
1378
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)1379 static void iwl_mvm_decode_eht_ext_tb(struct iwl_mvm *mvm,
1380 struct iwl_mvm_rx_phy_data *phy_data,
1381 struct ieee80211_rx_status *rx_status,
1382 struct ieee80211_radiotap_eht *eht,
1383 struct ieee80211_radiotap_eht_usig *usig)
1384 {
1385 if (phy_data->with_data) {
1386 __le32 data5 = phy_data->d5;
1387
1388 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1389 IWL_RX_PHY_DATA5_EHT_TYPE_AND_COMP,
1390 IEEE80211_RADIOTAP_EHT_USIG2_TB_B0_B1_PPDU_TYPE);
1391 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1392 IWL_RX_PHY_DATA5_EHT_TB_SPATIAL_REUSE1,
1393 IEEE80211_RADIOTAP_EHT_USIG2_TB_B3_B6_SPATIAL_REUSE_1);
1394
1395 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1396 IWL_RX_PHY_DATA5_EHT_TB_SPATIAL_REUSE2,
1397 IEEE80211_RADIOTAP_EHT_USIG2_TB_B7_B10_SPATIAL_REUSE_2);
1398 } else {
1399 __le32 usig_a1 = phy_data->rx_vec[0];
1400 __le32 usig_a2 = phy_data->rx_vec[1];
1401
1402 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
1403 IWL_RX_USIG_A1_DISREGARD,
1404 IEEE80211_RADIOTAP_EHT_USIG1_TB_B20_B25_DISREGARD);
1405 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1406 IWL_RX_USIG_A2_EHT_PPDU_TYPE,
1407 IEEE80211_RADIOTAP_EHT_USIG2_TB_B0_B1_PPDU_TYPE);
1408 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1409 IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B2,
1410 IEEE80211_RADIOTAP_EHT_USIG2_TB_B2_VALIDATE);
1411 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1412 IWL_RX_USIG_A2_EHT_TRIG_SPATIAL_REUSE_1,
1413 IEEE80211_RADIOTAP_EHT_USIG2_TB_B3_B6_SPATIAL_REUSE_1);
1414 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1415 IWL_RX_USIG_A2_EHT_TRIG_SPATIAL_REUSE_2,
1416 IEEE80211_RADIOTAP_EHT_USIG2_TB_B7_B10_SPATIAL_REUSE_2);
1417 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1418 IWL_RX_USIG_A2_EHT_TRIG_USIG2_DISREGARD,
1419 IEEE80211_RADIOTAP_EHT_USIG2_TB_B11_B15_DISREGARD);
1420 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1421 IWL_RX_USIG_A2_EHT_CRC_OK,
1422 IEEE80211_RADIOTAP_EHT_USIG2_TB_B16_B19_CRC);
1423 }
1424 }
1425
iwl_mvm_decode_eht_ru(struct iwl_mvm * mvm,struct ieee80211_rx_status * rx_status,struct ieee80211_radiotap_eht * eht)1426 static void iwl_mvm_decode_eht_ru(struct iwl_mvm *mvm,
1427 struct ieee80211_rx_status *rx_status,
1428 struct ieee80211_radiotap_eht *eht)
1429 {
1430 u32 ru = le32_get_bits(eht->data[8],
1431 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B7_B1);
1432 enum nl80211_eht_ru_alloc nl_ru;
1433
1434 /* Using D1.5 Table 9-53a - Encoding of PS160 and RU Allocation subfields
1435 * in an EHT variant User Info field
1436 */
1437
1438 switch (ru) {
1439 case 0 ... 36:
1440 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_26;
1441 break;
1442 case 37 ... 52:
1443 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_52;
1444 break;
1445 case 53 ... 60:
1446 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_106;
1447 break;
1448 case 61 ... 64:
1449 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_242;
1450 break;
1451 case 65 ... 66:
1452 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_484;
1453 break;
1454 case 67:
1455 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996;
1456 break;
1457 case 68:
1458 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_2x996;
1459 break;
1460 case 69:
1461 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_4x996;
1462 break;
1463 case 70 ... 81:
1464 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_52P26;
1465 break;
1466 case 82 ... 89:
1467 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_106P26;
1468 break;
1469 case 90 ... 93:
1470 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_484P242;
1471 break;
1472 case 94 ... 95:
1473 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996P484;
1474 break;
1475 case 96 ... 99:
1476 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996P484P242;
1477 break;
1478 case 100 ... 103:
1479 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_2x996P484;
1480 break;
1481 case 104:
1482 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_3x996;
1483 break;
1484 case 105 ... 106:
1485 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_3x996P484;
1486 break;
1487 default:
1488 return;
1489 }
1490
1491 rx_status->bw = RATE_INFO_BW_EHT_RU;
1492 rx_status->eht.ru = nl_ru;
1493 }
1494
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)1495 static void iwl_mvm_decode_eht_phy_data(struct iwl_mvm *mvm,
1496 struct iwl_mvm_rx_phy_data *phy_data,
1497 struct ieee80211_rx_status *rx_status,
1498 struct ieee80211_radiotap_eht *eht,
1499 struct ieee80211_radiotap_eht_usig *usig)
1500
1501 {
1502 __le32 data0 = phy_data->d0;
1503 __le32 data1 = phy_data->d1;
1504 __le32 usig_a1 = phy_data->rx_vec[0];
1505 u8 info_type = phy_data->info_type;
1506
1507 /* Not in EHT range */
1508 if (info_type < IWL_RX_PHY_INFO_TYPE_EHT_MU ||
1509 info_type > IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT)
1510 return;
1511
1512 usig->common |= cpu_to_le32
1513 (IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL_KNOWN |
1514 IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR_KNOWN);
1515 if (phy_data->with_data) {
1516 usig->common |= LE32_DEC_ENC(data0,
1517 IWL_RX_PHY_DATA0_EHT_UPLINK,
1518 IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL);
1519 usig->common |= LE32_DEC_ENC(data0,
1520 IWL_RX_PHY_DATA0_EHT_BSS_COLOR_MASK,
1521 IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR);
1522 } else {
1523 usig->common |= LE32_DEC_ENC(usig_a1,
1524 IWL_RX_USIG_A1_UL_FLAG,
1525 IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL);
1526 usig->common |= LE32_DEC_ENC(usig_a1,
1527 IWL_RX_USIG_A1_BSS_COLOR,
1528 IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR);
1529 }
1530
1531 if (fw_has_capa(&mvm->fw->ucode_capa,
1532 IWL_UCODE_TLV_CAPA_SNIFF_VALIDATE_SUPPORT)) {
1533 usig->common |=
1534 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_VALIDATE_BITS_CHECKED);
1535 usig->common |=
1536 LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_VALIDATE,
1537 IEEE80211_RADIOTAP_EHT_USIG_COMMON_VALIDATE_BITS_OK);
1538 }
1539
1540 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_SPATIAL_REUSE);
1541 eht->data[0] |= LE32_DEC_ENC(data0,
1542 IWL_RX_PHY_DATA0_ETH_SPATIAL_REUSE_MASK,
1543 IEEE80211_RADIOTAP_EHT_DATA0_SPATIAL_REUSE);
1544
1545 /* All RU allocating size/index is in TB format */
1546 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_RU_ALLOC_TB_FMT);
1547 eht->data[8] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PS160,
1548 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_PS_160);
1549 eht->data[8] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_RU_ALLOC_B0,
1550 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B0);
1551 eht->data[8] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_RU_ALLOC_B1_B7,
1552 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B7_B1);
1553
1554 iwl_mvm_decode_eht_ru(mvm, rx_status, eht);
1555
1556 /* We only get here in case of IWL_RX_MPDU_PHY_TSF_OVERLOAD is set
1557 * which is on only in case of monitor mode so no need to check monitor
1558 * mode
1559 */
1560 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PRIMARY_80);
1561 eht->data[1] |=
1562 le32_encode_bits(mvm->monitor_p80,
1563 IEEE80211_RADIOTAP_EHT_DATA1_PRIMARY_80);
1564
1565 usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP_KNOWN);
1566 if (phy_data->with_data)
1567 usig->common |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_TXOP_DUR_MASK,
1568 IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP);
1569 else
1570 usig->common |= LE32_DEC_ENC(usig_a1, IWL_RX_USIG_A1_TXOP_DURATION,
1571 IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP);
1572
1573 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_LDPC_EXTRA_SYM_OM);
1574 eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_LDPC_EXT_SYM,
1575 IEEE80211_RADIOTAP_EHT_DATA0_LDPC_EXTRA_SYM_OM);
1576
1577 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PRE_PADD_FACOR_OM);
1578 eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PRE_FEC_PAD_MASK,
1579 IEEE80211_RADIOTAP_EHT_DATA0_PRE_PADD_FACOR_OM);
1580
1581 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PE_DISAMBIGUITY_OM);
1582 eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PE_DISAMBIG,
1583 IEEE80211_RADIOTAP_EHT_DATA0_PE_DISAMBIGUITY_OM);
1584
1585 /* TODO: what about IWL_RX_PHY_DATA0_EHT_BW320_SLOT */
1586
1587 if (!le32_get_bits(data0, IWL_RX_PHY_DATA0_EHT_SIGA_CRC_OK))
1588 usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BAD_USIG_CRC);
1589
1590 usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_PHY_VER_KNOWN);
1591 usig->common |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PHY_VER,
1592 IEEE80211_RADIOTAP_EHT_USIG_COMMON_PHY_VER);
1593
1594 /*
1595 * TODO: what about TB - IWL_RX_PHY_DATA1_EHT_TB_PILOT_TYPE,
1596 * IWL_RX_PHY_DATA1_EHT_TB_LOW_SS
1597 */
1598
1599 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_EHT_LTF);
1600 eht->data[0] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_SIG_LTF_NUM,
1601 IEEE80211_RADIOTAP_EHT_DATA0_EHT_LTF);
1602
1603 if (info_type == IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT ||
1604 info_type == IWL_RX_PHY_INFO_TYPE_EHT_TB)
1605 iwl_mvm_decode_eht_ext_tb(mvm, phy_data, rx_status, eht, usig);
1606
1607 if (info_type == IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT ||
1608 info_type == IWL_RX_PHY_INFO_TYPE_EHT_MU)
1609 iwl_mvm_decode_eht_ext_mu(mvm, phy_data, rx_status, eht, usig);
1610 }
1611
iwl_mvm_rx_eht(struct iwl_mvm * mvm,struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data,int queue)1612 static void iwl_mvm_rx_eht(struct iwl_mvm *mvm, struct sk_buff *skb,
1613 struct iwl_mvm_rx_phy_data *phy_data,
1614 int queue)
1615 {
1616 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1617
1618 struct ieee80211_radiotap_eht *eht;
1619 struct ieee80211_radiotap_eht_usig *usig;
1620 size_t eht_len = sizeof(*eht);
1621
1622 u32 rate_n_flags = phy_data->rate_n_flags;
1623 u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1624 /* EHT and HE have the same valus for LTF */
1625 u8 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN;
1626 u16 phy_info = phy_data->phy_info;
1627 u32 bw;
1628
1629 /* u32 for 1 user_info */
1630 if (phy_data->with_data)
1631 eht_len += sizeof(u32);
1632
1633 eht = iwl_mvm_radiotap_put_tlv(skb, IEEE80211_RADIOTAP_EHT, eht_len);
1634
1635 usig = iwl_mvm_radiotap_put_tlv(skb, IEEE80211_RADIOTAP_EHT_USIG,
1636 sizeof(*usig));
1637 rx_status->flag |= RX_FLAG_RADIOTAP_TLV_AT_END;
1638 usig->common |=
1639 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BW_KNOWN);
1640
1641 /* specific handling for 320MHz */
1642 bw = FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK, rate_n_flags);
1643 if (bw == RATE_MCS_CHAN_WIDTH_320_VAL)
1644 bw += FIELD_GET(IWL_RX_PHY_DATA0_EHT_BW320_SLOT,
1645 le32_to_cpu(phy_data->d0));
1646
1647 usig->common |= cpu_to_le32
1648 (FIELD_PREP(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BW, bw));
1649
1650 /* report the AMPDU-EOF bit on single frames */
1651 if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1652 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
1653 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1654 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
1655 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1656 }
1657
1658 /* update aggregation data for monitor sake on default queue */
1659 if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) &&
1660 (phy_info & IWL_RX_MPDU_PHY_AMPDU) && phy_data->first_subframe) {
1661 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1662 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
1663 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1664 }
1665
1666 if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1667 iwl_mvm_decode_eht_phy_data(mvm, phy_data, rx_status, eht, usig);
1668
1669 #define CHECK_TYPE(F) \
1670 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F != \
1671 (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS))
1672
1673 CHECK_TYPE(SU);
1674 CHECK_TYPE(EXT_SU);
1675 CHECK_TYPE(MU);
1676 CHECK_TYPE(TRIG);
1677
1678 switch (FIELD_GET(RATE_MCS_HE_GI_LTF_MSK, rate_n_flags)) {
1679 case 0:
1680 if (he_type == RATE_MCS_HE_TYPE_TRIG) {
1681 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_1_6;
1682 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
1683 } else {
1684 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_0_8;
1685 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1686 }
1687 break;
1688 case 1:
1689 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_1_6;
1690 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1691 break;
1692 case 2:
1693 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1694 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1695 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_3_2;
1696 else
1697 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_0_8;
1698 break;
1699 case 3:
1700 if (he_type != RATE_MCS_HE_TYPE_TRIG) {
1701 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1702 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_3_2;
1703 }
1704 break;
1705 default:
1706 /* nothing here */
1707 break;
1708 }
1709
1710 if (ltf != IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN) {
1711 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_GI);
1712 eht->data[0] |= cpu_to_le32
1713 (FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_LTF,
1714 ltf) |
1715 FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_GI,
1716 rx_status->eht.gi));
1717 }
1718
1719
1720 if (!phy_data->with_data) {
1721 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_NSS_S |
1722 IEEE80211_RADIOTAP_EHT_KNOWN_BEAMFORMED_S);
1723 eht->data[7] |=
1724 le32_encode_bits(le32_get_bits(phy_data->rx_vec[2],
1725 RX_NO_DATA_RX_VEC2_EHT_NSTS_MSK),
1726 IEEE80211_RADIOTAP_EHT_DATA7_NSS_S);
1727 if (rate_n_flags & RATE_MCS_BF_MSK)
1728 eht->data[7] |=
1729 cpu_to_le32(IEEE80211_RADIOTAP_EHT_DATA7_BEAMFORMED_S);
1730 } else {
1731 eht->user_info[0] |=
1732 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_MCS_KNOWN |
1733 IEEE80211_RADIOTAP_EHT_USER_INFO_CODING_KNOWN |
1734 IEEE80211_RADIOTAP_EHT_USER_INFO_NSS_KNOWN_O |
1735 IEEE80211_RADIOTAP_EHT_USER_INFO_BEAMFORMING_KNOWN_O |
1736 IEEE80211_RADIOTAP_EHT_USER_INFO_DATA_FOR_USER);
1737
1738 if (rate_n_flags & RATE_MCS_BF_MSK)
1739 eht->user_info[0] |=
1740 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_BEAMFORMING_O);
1741
1742 if (rate_n_flags & RATE_MCS_LDPC_MSK)
1743 eht->user_info[0] |=
1744 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_CODING);
1745
1746 eht->user_info[0] |= cpu_to_le32
1747 (FIELD_PREP(IEEE80211_RADIOTAP_EHT_USER_INFO_MCS,
1748 FIELD_GET(RATE_VHT_MCS_RATE_CODE_MSK,
1749 rate_n_flags)) |
1750 FIELD_PREP(IEEE80211_RADIOTAP_EHT_USER_INFO_NSS_O,
1751 FIELD_GET(RATE_MCS_NSS_MSK, rate_n_flags)));
1752 }
1753 }
1754
iwl_mvm_rx_he(struct iwl_mvm * mvm,struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data,int queue)1755 static void iwl_mvm_rx_he(struct iwl_mvm *mvm, struct sk_buff *skb,
1756 struct iwl_mvm_rx_phy_data *phy_data,
1757 int queue)
1758 {
1759 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1760 struct ieee80211_radiotap_he *he = NULL;
1761 struct ieee80211_radiotap_he_mu *he_mu = NULL;
1762 u32 rate_n_flags = phy_data->rate_n_flags;
1763 u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1764 u8 ltf;
1765 static const struct ieee80211_radiotap_he known = {
1766 .data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN |
1767 IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN |
1768 IEEE80211_RADIOTAP_HE_DATA1_STBC_KNOWN |
1769 IEEE80211_RADIOTAP_HE_DATA1_CODING_KNOWN),
1770 .data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN |
1771 IEEE80211_RADIOTAP_HE_DATA2_TXBF_KNOWN),
1772 };
1773 static const struct ieee80211_radiotap_he_mu mu_known = {
1774 .flags1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS_KNOWN |
1775 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM_KNOWN |
1776 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN |
1777 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_COMP_KNOWN),
1778 .flags2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW_KNOWN |
1779 IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN),
1780 };
1781 u16 phy_info = phy_data->phy_info;
1782
1783 he = skb_put_data(skb, &known, sizeof(known));
1784 rx_status->flag |= RX_FLAG_RADIOTAP_HE;
1785
1786 if (phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU ||
1787 phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU_EXT) {
1788 he_mu = skb_put_data(skb, &mu_known, sizeof(mu_known));
1789 rx_status->flag |= RX_FLAG_RADIOTAP_HE_MU;
1790 }
1791
1792 /* report the AMPDU-EOF bit on single frames */
1793 if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1794 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
1795 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1796 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF))
1797 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1798 }
1799
1800 if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1801 iwl_mvm_decode_he_phy_data(mvm, phy_data, he, he_mu, rx_status,
1802 queue);
1803
1804 /* update aggregation data for monitor sake on default queue */
1805 if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) &&
1806 (phy_info & IWL_RX_MPDU_PHY_AMPDU) && phy_data->first_subframe) {
1807 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1808 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
1809 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1810 }
1811
1812 if (he_type == RATE_MCS_HE_TYPE_EXT_SU &&
1813 rate_n_flags & RATE_MCS_HE_106T_MSK) {
1814 rx_status->bw = RATE_INFO_BW_HE_RU;
1815 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
1816 }
1817
1818 /* actually data is filled in mac80211 */
1819 if (he_type == RATE_MCS_HE_TYPE_SU ||
1820 he_type == RATE_MCS_HE_TYPE_EXT_SU)
1821 he->data1 |=
1822 cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
1823
1824 #define CHECK_TYPE(F) \
1825 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F != \
1826 (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS))
1827
1828 CHECK_TYPE(SU);
1829 CHECK_TYPE(EXT_SU);
1830 CHECK_TYPE(MU);
1831 CHECK_TYPE(TRIG);
1832
1833 he->data1 |= cpu_to_le16(he_type >> RATE_MCS_HE_TYPE_POS);
1834
1835 if (rate_n_flags & RATE_MCS_BF_MSK)
1836 he->data5 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA5_TXBF);
1837
1838 switch ((rate_n_flags & RATE_MCS_HE_GI_LTF_MSK) >>
1839 RATE_MCS_HE_GI_LTF_POS) {
1840 case 0:
1841 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1842 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1843 else
1844 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1845 if (he_type == RATE_MCS_HE_TYPE_MU)
1846 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1847 else
1848 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
1849 break;
1850 case 1:
1851 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1852 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1853 else
1854 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1855 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1856 break;
1857 case 2:
1858 if (he_type == RATE_MCS_HE_TYPE_TRIG) {
1859 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
1860 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1861 } else {
1862 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1863 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1864 }
1865 break;
1866 case 3:
1867 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
1868 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1869 break;
1870 case 4:
1871 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1872 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1873 break;
1874 default:
1875 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN;
1876 }
1877
1878 he->data5 |= le16_encode_bits(ltf,
1879 IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE);
1880 }
1881
iwl_mvm_decode_lsig(struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data)1882 static void iwl_mvm_decode_lsig(struct sk_buff *skb,
1883 struct iwl_mvm_rx_phy_data *phy_data)
1884 {
1885 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1886 struct ieee80211_radiotap_lsig *lsig;
1887
1888 switch (phy_data->info_type) {
1889 case IWL_RX_PHY_INFO_TYPE_HT:
1890 case IWL_RX_PHY_INFO_TYPE_VHT_SU:
1891 case IWL_RX_PHY_INFO_TYPE_VHT_MU:
1892 case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1893 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1894 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1895 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1896 case IWL_RX_PHY_INFO_TYPE_HE_TB:
1897 case IWL_RX_PHY_INFO_TYPE_EHT_MU:
1898 case IWL_RX_PHY_INFO_TYPE_EHT_TB:
1899 case IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT:
1900 case IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT:
1901 lsig = skb_put(skb, sizeof(*lsig));
1902 lsig->data1 = cpu_to_le16(IEEE80211_RADIOTAP_LSIG_DATA1_LENGTH_KNOWN);
1903 lsig->data2 = le16_encode_bits(le32_get_bits(phy_data->d1,
1904 IWL_RX_PHY_DATA1_LSIG_LEN_MASK),
1905 IEEE80211_RADIOTAP_LSIG_DATA2_LENGTH);
1906 rx_status->flag |= RX_FLAG_RADIOTAP_LSIG;
1907 break;
1908 default:
1909 break;
1910 }
1911 }
1912
1913 struct iwl_rx_sta_csa {
1914 bool all_sta_unblocked;
1915 struct ieee80211_vif *vif;
1916 };
1917
iwl_mvm_rx_get_sta_block_tx(void * data,struct ieee80211_sta * sta)1918 static void iwl_mvm_rx_get_sta_block_tx(void *data, struct ieee80211_sta *sta)
1919 {
1920 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1921 struct iwl_rx_sta_csa *rx_sta_csa = data;
1922
1923 if (mvmsta->vif != rx_sta_csa->vif)
1924 return;
1925
1926 if (mvmsta->disable_tx)
1927 rx_sta_csa->all_sta_unblocked = false;
1928 }
1929
1930 /*
1931 * Note: requires also rx_status->band to be prefilled, as well
1932 * as phy_data (apart from phy_data->info_type)
1933 */
iwl_mvm_rx_fill_status(struct iwl_mvm * mvm,struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data,int queue)1934 static void iwl_mvm_rx_fill_status(struct iwl_mvm *mvm,
1935 struct sk_buff *skb,
1936 struct iwl_mvm_rx_phy_data *phy_data,
1937 int queue)
1938 {
1939 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1940 u32 rate_n_flags = phy_data->rate_n_flags;
1941 u8 stbc = u32_get_bits(rate_n_flags, RATE_MCS_STBC_MSK);
1942 u32 format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
1943 bool is_sgi;
1944
1945 phy_data->info_type = IWL_RX_PHY_INFO_TYPE_NONE;
1946
1947 if (phy_data->phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1948 phy_data->info_type =
1949 le32_get_bits(phy_data->d1,
1950 IWL_RX_PHY_DATA1_INFO_TYPE_MASK);
1951
1952 /* This may be overridden by iwl_mvm_rx_he() to HE_RU */
1953 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
1954 case RATE_MCS_CHAN_WIDTH_20:
1955 break;
1956 case RATE_MCS_CHAN_WIDTH_40:
1957 rx_status->bw = RATE_INFO_BW_40;
1958 break;
1959 case RATE_MCS_CHAN_WIDTH_80:
1960 rx_status->bw = RATE_INFO_BW_80;
1961 break;
1962 case RATE_MCS_CHAN_WIDTH_160:
1963 rx_status->bw = RATE_INFO_BW_160;
1964 break;
1965 case RATE_MCS_CHAN_WIDTH_320:
1966 rx_status->bw = RATE_INFO_BW_320;
1967 break;
1968 }
1969
1970 /* must be before L-SIG data */
1971 if (format == RATE_MCS_HE_MSK)
1972 iwl_mvm_rx_he(mvm, skb, phy_data, queue);
1973
1974 iwl_mvm_decode_lsig(skb, phy_data);
1975
1976 rx_status->device_timestamp = phy_data->gp2_on_air_rise;
1977
1978 if (mvm->rx_ts_ptp && mvm->monitor_on) {
1979 u64 adj_time =
1980 iwl_mvm_ptp_get_adj_time(mvm, phy_data->gp2_on_air_rise * NSEC_PER_USEC);
1981
1982 rx_status->mactime = div64_u64(adj_time, NSEC_PER_USEC);
1983 rx_status->flag |= RX_FLAG_MACTIME_IS_RTAP_TS64;
1984 rx_status->flag &= ~RX_FLAG_MACTIME;
1985 }
1986
1987 rx_status->freq = ieee80211_channel_to_frequency(phy_data->channel,
1988 rx_status->band);
1989 iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags,
1990 phy_data->energy_a, phy_data->energy_b);
1991
1992 /* using TLV format and must be after all fixed len fields */
1993 if (format == RATE_MCS_EHT_MSK)
1994 iwl_mvm_rx_eht(mvm, skb, phy_data, queue);
1995
1996 if (unlikely(mvm->monitor_on))
1997 iwl_mvm_add_rtap_sniffer_config(mvm, skb);
1998
1999 is_sgi = format == RATE_MCS_HE_MSK ?
2000 iwl_he_is_sgi(rate_n_flags) :
2001 rate_n_flags & RATE_MCS_SGI_MSK;
2002
2003 if (!(format == RATE_MCS_CCK_MSK) && is_sgi)
2004 rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
2005
2006 if (rate_n_flags & RATE_MCS_LDPC_MSK)
2007 rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
2008
2009 switch (format) {
2010 case RATE_MCS_VHT_MSK:
2011 rx_status->encoding = RX_ENC_VHT;
2012 break;
2013 case RATE_MCS_HE_MSK:
2014 rx_status->encoding = RX_ENC_HE;
2015 rx_status->he_dcm =
2016 !!(rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK);
2017 break;
2018 case RATE_MCS_EHT_MSK:
2019 rx_status->encoding = RX_ENC_EHT;
2020 break;
2021 }
2022
2023 switch (format) {
2024 case RATE_MCS_HT_MSK:
2025 rx_status->encoding = RX_ENC_HT;
2026 rx_status->rate_idx = RATE_HT_MCS_INDEX(rate_n_flags);
2027 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
2028 break;
2029 case RATE_MCS_VHT_MSK:
2030 case RATE_MCS_HE_MSK:
2031 case RATE_MCS_EHT_MSK:
2032 rx_status->nss =
2033 u32_get_bits(rate_n_flags, RATE_MCS_NSS_MSK) + 1;
2034 rx_status->rate_idx = rate_n_flags & RATE_MCS_CODE_MSK;
2035 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
2036 break;
2037 default: {
2038 int rate = iwl_mvm_legacy_hw_idx_to_mac80211_idx(rate_n_flags,
2039 rx_status->band);
2040
2041 rx_status->rate_idx = rate;
2042
2043 if ((rate < 0 || rate > 0xFF)) {
2044 rx_status->rate_idx = 0;
2045 if (net_ratelimit())
2046 IWL_ERR(mvm, "Invalid rate flags 0x%x, band %d,\n",
2047 rate_n_flags, rx_status->band);
2048 }
2049
2050 break;
2051 }
2052 }
2053 }
2054
iwl_mvm_rx_mpdu_mq(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2055 void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
2056 struct iwl_rx_cmd_buffer *rxb, int queue)
2057 {
2058 struct ieee80211_rx_status *rx_status;
2059 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2060 struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
2061 struct ieee80211_hdr *hdr;
2062 u32 len;
2063 u32 pkt_len = iwl_rx_packet_payload_len(pkt);
2064 struct ieee80211_sta *sta = NULL;
2065 struct sk_buff *skb;
2066 u8 crypt_len = 0;
2067 u8 sta_id = le32_get_bits(desc->status, IWL_RX_MPDU_STATUS_STA_ID);
2068 size_t desc_size;
2069 struct iwl_mvm_rx_phy_data phy_data = {};
2070 u32 format;
2071
2072 if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
2073 return;
2074
2075 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
2076 desc_size = sizeof(*desc);
2077 else
2078 desc_size = IWL_RX_DESC_SIZE_V1;
2079
2080 if (unlikely(pkt_len < desc_size)) {
2081 IWL_DEBUG_DROP(mvm, "Bad REPLY_RX_MPDU_CMD size\n");
2082 return;
2083 }
2084
2085 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
2086 phy_data.rate_n_flags = le32_to_cpu(desc->v3.rate_n_flags);
2087 phy_data.channel = desc->v3.channel;
2088 phy_data.gp2_on_air_rise = le32_to_cpu(desc->v3.gp2_on_air_rise);
2089 phy_data.energy_a = desc->v3.energy_a;
2090 phy_data.energy_b = desc->v3.energy_b;
2091
2092 phy_data.d0 = desc->v3.phy_data0;
2093 phy_data.d1 = desc->v3.phy_data1;
2094 phy_data.d2 = desc->v3.phy_data2;
2095 phy_data.d3 = desc->v3.phy_data3;
2096 phy_data.eht_d4 = desc->phy_eht_data4;
2097 phy_data.d5 = desc->v3.phy_data5;
2098 } else {
2099 phy_data.rate_n_flags = le32_to_cpu(desc->v1.rate_n_flags);
2100 phy_data.channel = desc->v1.channel;
2101 phy_data.gp2_on_air_rise = le32_to_cpu(desc->v1.gp2_on_air_rise);
2102 phy_data.energy_a = desc->v1.energy_a;
2103 phy_data.energy_b = desc->v1.energy_b;
2104
2105 phy_data.d0 = desc->v1.phy_data0;
2106 phy_data.d1 = desc->v1.phy_data1;
2107 phy_data.d2 = desc->v1.phy_data2;
2108 phy_data.d3 = desc->v1.phy_data3;
2109 }
2110
2111 if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
2112 REPLY_RX_MPDU_CMD, 0) < 4) {
2113 phy_data.rate_n_flags = iwl_new_rate_from_v1(phy_data.rate_n_flags);
2114 IWL_DEBUG_DROP(mvm, "Got old format rate, converting. New rate: 0x%x\n",
2115 phy_data.rate_n_flags);
2116 }
2117
2118 format = phy_data.rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
2119
2120 len = le16_to_cpu(desc->mpdu_len);
2121
2122 if (unlikely(len + desc_size > pkt_len)) {
2123 IWL_DEBUG_DROP(mvm, "FW lied about packet len\n");
2124 return;
2125 }
2126
2127 phy_data.with_data = true;
2128 phy_data.phy_info = le16_to_cpu(desc->phy_info);
2129 phy_data.d4 = desc->phy_data4;
2130
2131 hdr = (void *)(pkt->data + desc_size);
2132 /* Dont use dev_alloc_skb(), we'll have enough headroom once
2133 * ieee80211_hdr pulled.
2134 */
2135 skb = alloc_skb(128, GFP_ATOMIC);
2136 if (!skb) {
2137 IWL_ERR(mvm, "alloc_skb failed\n");
2138 return;
2139 }
2140
2141 if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
2142 /*
2143 * If the device inserted padding it means that (it thought)
2144 * the 802.11 header wasn't a multiple of 4 bytes long. In
2145 * this case, reserve two bytes at the start of the SKB to
2146 * align the payload properly in case we end up copying it.
2147 */
2148 skb_reserve(skb, 2);
2149 }
2150
2151 rx_status = IEEE80211_SKB_RXCB(skb);
2152
2153 /*
2154 * Keep packets with CRC errors (and with overrun) for monitor mode
2155 * (otherwise the firmware discards them) but mark them as bad.
2156 */
2157 if (!(desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_CRC_OK)) ||
2158 !(desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_OVERRUN_OK))) {
2159 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n",
2160 le32_to_cpu(desc->status));
2161 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
2162 }
2163
2164 /* set the preamble flag if appropriate */
2165 if (format == RATE_MCS_CCK_MSK &&
2166 phy_data.phy_info & IWL_RX_MPDU_PHY_SHORT_PREAMBLE)
2167 rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
2168
2169 if (likely(!(phy_data.phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD))) {
2170 u64 tsf_on_air_rise;
2171
2172 if (mvm->trans->trans_cfg->device_family >=
2173 IWL_DEVICE_FAMILY_AX210)
2174 tsf_on_air_rise = le64_to_cpu(desc->v3.tsf_on_air_rise);
2175 else
2176 tsf_on_air_rise = le64_to_cpu(desc->v1.tsf_on_air_rise);
2177
2178 rx_status->mactime = tsf_on_air_rise;
2179 /* TSF as indicated by the firmware is at INA time */
2180 rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;
2181 }
2182
2183 if (iwl_mvm_is_band_in_rx_supported(mvm)) {
2184 u8 band = BAND_IN_RX_STATUS(desc->mac_phy_idx);
2185
2186 rx_status->band = iwl_mvm_nl80211_band_from_phy(band);
2187 } else {
2188 rx_status->band = phy_data.channel > 14 ? NL80211_BAND_5GHZ :
2189 NL80211_BAND_2GHZ;
2190 }
2191
2192 /* update aggregation data for monitor sake on default queue */
2193 if (!queue && (phy_data.phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
2194 bool toggle_bit;
2195
2196 toggle_bit = phy_data.phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE;
2197 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
2198 /*
2199 * Toggle is switched whenever new aggregation starts. Make
2200 * sure ampdu_reference is never 0 so we can later use it to
2201 * see if the frame was really part of an A-MPDU or not.
2202 */
2203 if (toggle_bit != mvm->ampdu_toggle) {
2204 mvm->ampdu_ref++;
2205 if (mvm->ampdu_ref == 0)
2206 mvm->ampdu_ref++;
2207 mvm->ampdu_toggle = toggle_bit;
2208 phy_data.first_subframe = true;
2209 }
2210 rx_status->ampdu_reference = mvm->ampdu_ref;
2211 }
2212
2213 rcu_read_lock();
2214
2215 if (desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_SRC_STA_FOUND)) {
2216 if (!WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations)) {
2217 struct ieee80211_link_sta *link_sta;
2218
2219 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
2220 if (IS_ERR(sta))
2221 sta = NULL;
2222 link_sta = rcu_dereference(mvm->fw_id_to_link_sta[sta_id]);
2223
2224 if (sta && sta->valid_links && link_sta) {
2225 rx_status->link_valid = 1;
2226 rx_status->link_id = link_sta->link_id;
2227 }
2228 }
2229 } else if (!is_multicast_ether_addr(hdr->addr2)) {
2230 /*
2231 * This is fine since we prevent two stations with the same
2232 * address from being added.
2233 */
2234 sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
2235 }
2236
2237 if (iwl_mvm_rx_crypto(mvm, sta, hdr, rx_status, phy_data.phy_info, desc,
2238 le32_to_cpu(pkt->len_n_flags), queue,
2239 &crypt_len)) {
2240 kfree_skb(skb);
2241 goto out;
2242 }
2243
2244 iwl_mvm_rx_fill_status(mvm, skb, &phy_data, queue);
2245
2246 if (sta) {
2247 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2248 struct ieee80211_vif *tx_blocked_vif =
2249 rcu_dereference(mvm->csa_tx_blocked_vif);
2250 u8 baid = (u8)((le32_to_cpu(desc->reorder_data) &
2251 IWL_RX_MPDU_REORDER_BAID_MASK) >>
2252 IWL_RX_MPDU_REORDER_BAID_SHIFT);
2253 struct iwl_fw_dbg_trigger_tlv *trig;
2254 struct ieee80211_vif *vif = mvmsta->vif;
2255
2256 if (!mvm->tcm.paused && len >= sizeof(*hdr) &&
2257 !is_multicast_ether_addr(hdr->addr1) &&
2258 ieee80211_is_data(hdr->frame_control) &&
2259 time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
2260 schedule_delayed_work(&mvm->tcm.work, 0);
2261
2262 /*
2263 * We have tx blocked stations (with CS bit). If we heard
2264 * frames from a blocked station on a new channel we can
2265 * TX to it again.
2266 */
2267 if (unlikely(tx_blocked_vif) && tx_blocked_vif == vif) {
2268 struct iwl_mvm_vif *mvmvif =
2269 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
2270 struct iwl_rx_sta_csa rx_sta_csa = {
2271 .all_sta_unblocked = true,
2272 .vif = tx_blocked_vif,
2273 };
2274
2275 if (mvmvif->csa_target_freq == rx_status->freq)
2276 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta,
2277 false);
2278 ieee80211_iterate_stations_atomic(mvm->hw,
2279 iwl_mvm_rx_get_sta_block_tx,
2280 &rx_sta_csa);
2281
2282 if (rx_sta_csa.all_sta_unblocked) {
2283 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2284 /* Unblock BCAST / MCAST station */
2285 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
2286 cancel_delayed_work(&mvm->cs_tx_unblock_dwork);
2287 }
2288 }
2289
2290 rs_update_last_rssi(mvm, mvmsta, rx_status);
2291
2292 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt,
2293 ieee80211_vif_to_wdev(vif),
2294 FW_DBG_TRIGGER_RSSI);
2295
2296 if (trig && ieee80211_is_beacon(hdr->frame_control)) {
2297 struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
2298 s32 rssi;
2299
2300 rssi_trig = (void *)trig->data;
2301 rssi = le32_to_cpu(rssi_trig->rssi);
2302
2303 if (rx_status->signal < rssi)
2304 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
2305 #if defined(__linux__)
2306 NULL);
2307 #elif defined(__FreeBSD__)
2308 "");
2309 #endif
2310 }
2311
2312 if (ieee80211_is_data(hdr->frame_control))
2313 iwl_mvm_rx_csum(mvm, sta, skb, pkt);
2314
2315 if (iwl_mvm_is_dup(sta, queue, rx_status, hdr, desc)) {
2316 IWL_DEBUG_DROP(mvm, "Dropping duplicate packet 0x%x\n",
2317 le16_to_cpu(hdr->seq_ctrl));
2318 kfree_skb(skb);
2319 goto out;
2320 }
2321
2322 /*
2323 * Our hardware de-aggregates AMSDUs but copies the mac header
2324 * as it to the de-aggregated MPDUs. We need to turn off the
2325 * AMSDU bit in the QoS control ourselves.
2326 * In addition, HW reverses addr3 and addr4 - reverse it back.
2327 */
2328 if ((desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
2329 !WARN_ON(!ieee80211_is_data_qos(hdr->frame_control))) {
2330 u8 *qc = ieee80211_get_qos_ctl(hdr);
2331
2332 *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
2333
2334 if (mvm->trans->trans_cfg->device_family ==
2335 IWL_DEVICE_FAMILY_9000) {
2336 iwl_mvm_flip_address(hdr->addr3);
2337
2338 if (ieee80211_has_a4(hdr->frame_control))
2339 iwl_mvm_flip_address(hdr->addr4);
2340 }
2341 }
2342 if (baid != IWL_RX_REORDER_DATA_INVALID_BAID) {
2343 u32 reorder_data = le32_to_cpu(desc->reorder_data);
2344
2345 iwl_mvm_agg_rx_received(mvm, reorder_data, baid);
2346 }
2347
2348 if (ieee80211_is_data(hdr->frame_control)) {
2349 u8 sub_frame_idx = desc->amsdu_info &
2350 IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
2351
2352 /* 0 means not an A-MSDU, and 1 means a new A-MSDU */
2353 if (!sub_frame_idx || sub_frame_idx == 1)
2354 iwl_mvm_count_mpdu(mvmsta, sta_id, 1, false,
2355 queue);
2356 }
2357 }
2358
2359 /* management stuff on default queue */
2360 if (!queue) {
2361 if (unlikely((ieee80211_is_beacon(hdr->frame_control) ||
2362 ieee80211_is_probe_resp(hdr->frame_control)) &&
2363 mvm->sched_scan_pass_all ==
2364 SCHED_SCAN_PASS_ALL_ENABLED))
2365 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND;
2366
2367 if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
2368 ieee80211_is_probe_resp(hdr->frame_control)))
2369 rx_status->boottime_ns = ktime_get_boottime_ns();
2370 }
2371
2372 if (iwl_mvm_create_skb(mvm, skb, hdr, len, crypt_len, rxb)) {
2373 kfree_skb(skb);
2374 goto out;
2375 }
2376
2377 if (!iwl_mvm_reorder(mvm, napi, queue, sta, skb, desc) &&
2378 likely(!iwl_mvm_time_sync_frame(mvm, skb, hdr->addr2)) &&
2379 likely(!iwl_mvm_mei_filter_scan(mvm, skb))) {
2380 if (mvm->trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_9000 &&
2381 (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
2382 !(desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME))
2383 rx_status->flag |= RX_FLAG_AMSDU_MORE;
2384
2385 iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue, sta);
2386 }
2387 out:
2388 rcu_read_unlock();
2389 }
2390
iwl_mvm_rx_monitor_no_data(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2391 void iwl_mvm_rx_monitor_no_data(struct iwl_mvm *mvm, struct napi_struct *napi,
2392 struct iwl_rx_cmd_buffer *rxb, int queue)
2393 {
2394 struct ieee80211_rx_status *rx_status;
2395 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2396 struct iwl_rx_no_data_ver_3 *desc = (void *)pkt->data;
2397 u32 rssi;
2398 struct ieee80211_sta *sta = NULL;
2399 struct sk_buff *skb;
2400 struct iwl_mvm_rx_phy_data phy_data;
2401 u32 format;
2402
2403 if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
2404 return;
2405
2406 if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(struct iwl_rx_no_data)))
2407 return;
2408
2409 rssi = le32_to_cpu(desc->rssi);
2410 phy_data.d0 = desc->phy_info[0];
2411 phy_data.d1 = desc->phy_info[1];
2412 phy_data.phy_info = IWL_RX_MPDU_PHY_TSF_OVERLOAD;
2413 phy_data.gp2_on_air_rise = le32_to_cpu(desc->on_air_rise_time);
2414 phy_data.rate_n_flags = le32_to_cpu(desc->rate);
2415 phy_data.energy_a = u32_get_bits(rssi, RX_NO_DATA_CHAIN_A_MSK);
2416 phy_data.energy_b = u32_get_bits(rssi, RX_NO_DATA_CHAIN_B_MSK);
2417 phy_data.channel = u32_get_bits(rssi, RX_NO_DATA_CHANNEL_MSK);
2418 phy_data.with_data = false;
2419 phy_data.rx_vec[0] = desc->rx_vec[0];
2420 phy_data.rx_vec[1] = desc->rx_vec[1];
2421
2422 if (iwl_fw_lookup_notif_ver(mvm->fw, DATA_PATH_GROUP,
2423 RX_NO_DATA_NOTIF, 0) < 2) {
2424 IWL_DEBUG_DROP(mvm, "Got an old rate format. Old rate: 0x%x\n",
2425 phy_data.rate_n_flags);
2426 phy_data.rate_n_flags = iwl_new_rate_from_v1(phy_data.rate_n_flags);
2427 IWL_DEBUG_DROP(mvm, " Rate after conversion to the new format: 0x%x\n",
2428 phy_data.rate_n_flags);
2429 }
2430
2431 format = phy_data.rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
2432
2433 if (iwl_fw_lookup_notif_ver(mvm->fw, DATA_PATH_GROUP,
2434 RX_NO_DATA_NOTIF, 0) >= 3) {
2435 if (unlikely(iwl_rx_packet_payload_len(pkt) <
2436 sizeof(struct iwl_rx_no_data_ver_3)))
2437 /* invalid len for ver 3 */
2438 return;
2439 phy_data.rx_vec[2] = desc->rx_vec[2];
2440 phy_data.rx_vec[3] = desc->rx_vec[3];
2441 } else {
2442 if (format == RATE_MCS_EHT_MSK)
2443 /* no support for EHT before version 3 API */
2444 return;
2445 }
2446
2447 /* Dont use dev_alloc_skb(), we'll have enough headroom once
2448 * ieee80211_hdr pulled.
2449 */
2450 skb = alloc_skb(128, GFP_ATOMIC);
2451 if (!skb) {
2452 IWL_ERR(mvm, "alloc_skb failed\n");
2453 return;
2454 }
2455
2456 rx_status = IEEE80211_SKB_RXCB(skb);
2457
2458 /* 0-length PSDU */
2459 rx_status->flag |= RX_FLAG_NO_PSDU;
2460
2461 /* mark as failed PLCP on any errors to skip checks in mac80211 */
2462 if (le32_get_bits(desc->info, RX_NO_DATA_INFO_ERR_MSK) !=
2463 RX_NO_DATA_INFO_ERR_NONE)
2464 rx_status->flag |= RX_FLAG_FAILED_PLCP_CRC;
2465
2466 switch (le32_get_bits(desc->info, RX_NO_DATA_INFO_TYPE_MSK)) {
2467 case RX_NO_DATA_INFO_TYPE_NDP:
2468 rx_status->zero_length_psdu_type =
2469 IEEE80211_RADIOTAP_ZERO_LEN_PSDU_SOUNDING;
2470 break;
2471 case RX_NO_DATA_INFO_TYPE_MU_UNMATCHED:
2472 case RX_NO_DATA_INFO_TYPE_TB_UNMATCHED:
2473 rx_status->zero_length_psdu_type =
2474 IEEE80211_RADIOTAP_ZERO_LEN_PSDU_NOT_CAPTURED;
2475 break;
2476 default:
2477 rx_status->zero_length_psdu_type =
2478 IEEE80211_RADIOTAP_ZERO_LEN_PSDU_VENDOR;
2479 break;
2480 }
2481
2482 rx_status->band = phy_data.channel > 14 ? NL80211_BAND_5GHZ :
2483 NL80211_BAND_2GHZ;
2484
2485 iwl_mvm_rx_fill_status(mvm, skb, &phy_data, queue);
2486
2487 /* no more radio tap info should be put after this point.
2488 *
2489 * We mark it as mac header, for upper layers to know where
2490 * all radio tap header ends.
2491 *
2492 * Since data doesn't move data while putting data on skb and that is
2493 * the only way we use, data + len is the next place that hdr would be put
2494 */
2495 skb_set_mac_header(skb, skb->len);
2496
2497 /*
2498 * Override the nss from the rx_vec since the rate_n_flags has
2499 * only 2 bits for the nss which gives a max of 4 ss but there
2500 * may be up to 8 spatial streams.
2501 */
2502 switch (format) {
2503 case RATE_MCS_VHT_MSK:
2504 rx_status->nss =
2505 le32_get_bits(desc->rx_vec[0],
2506 RX_NO_DATA_RX_VEC0_VHT_NSTS_MSK) + 1;
2507 break;
2508 case RATE_MCS_HE_MSK:
2509 rx_status->nss =
2510 le32_get_bits(desc->rx_vec[0],
2511 RX_NO_DATA_RX_VEC0_HE_NSTS_MSK) + 1;
2512 break;
2513 case RATE_MCS_EHT_MSK:
2514 rx_status->nss =
2515 le32_get_bits(desc->rx_vec[2],
2516 RX_NO_DATA_RX_VEC2_EHT_NSTS_MSK) + 1;
2517 }
2518
2519 rcu_read_lock();
2520 ieee80211_rx_napi(mvm->hw, sta, skb, napi);
2521 rcu_read_unlock();
2522 }
2523
iwl_mvm_rx_frame_release(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2524 void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
2525 struct iwl_rx_cmd_buffer *rxb, int queue)
2526 {
2527 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2528 struct iwl_frame_release *release = (void *)pkt->data;
2529
2530 if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(*release)))
2531 return;
2532
2533 iwl_mvm_release_frames_from_notif(mvm, napi, release->baid,
2534 le16_to_cpu(release->nssn),
2535 queue);
2536 }
2537
iwl_mvm_rx_bar_frame_release(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2538 void iwl_mvm_rx_bar_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
2539 struct iwl_rx_cmd_buffer *rxb, int queue)
2540 {
2541 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2542 struct iwl_bar_frame_release *release = (void *)pkt->data;
2543 unsigned int baid = le32_get_bits(release->ba_info,
2544 IWL_BAR_FRAME_RELEASE_BAID_MASK);
2545 unsigned int nssn = le32_get_bits(release->ba_info,
2546 IWL_BAR_FRAME_RELEASE_NSSN_MASK);
2547 unsigned int sta_id = le32_get_bits(release->sta_tid,
2548 IWL_BAR_FRAME_RELEASE_STA_MASK);
2549 unsigned int tid = le32_get_bits(release->sta_tid,
2550 IWL_BAR_FRAME_RELEASE_TID_MASK);
2551 struct iwl_mvm_baid_data *baid_data;
2552
2553 if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(*release)))
2554 return;
2555
2556 if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID ||
2557 baid >= ARRAY_SIZE(mvm->baid_map)))
2558 return;
2559
2560 rcu_read_lock();
2561 baid_data = rcu_dereference(mvm->baid_map[baid]);
2562 if (!baid_data) {
2563 IWL_DEBUG_RX(mvm,
2564 "Got valid BAID %d but not allocated, invalid BAR release!\n",
2565 baid);
2566 goto out;
2567 }
2568
2569 if (WARN(tid != baid_data->tid || sta_id > IWL_MVM_STATION_COUNT_MAX ||
2570 !(baid_data->sta_mask & BIT(sta_id)),
2571 "baid 0x%x is mapped to sta_mask:0x%x tid:%d, but BAR release received for sta:%d tid:%d\n",
2572 baid, baid_data->sta_mask, baid_data->tid, sta_id,
2573 tid))
2574 goto out;
2575
2576 IWL_DEBUG_DROP(mvm, "Received a BAR, expect packet loss: nssn %d\n",
2577 nssn);
2578
2579 iwl_mvm_release_frames_from_notif(mvm, napi, baid, nssn, queue);
2580 out:
2581 rcu_read_unlock();
2582 }
2583