1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2012-2014, 2018-2023 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,struct ieee80211_link_sta * link_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 struct ieee80211_link_sta *link_sta)
244 {
245 if (unlikely(iwl_mvm_check_pn(mvm, skb, queue, sta))) {
246 kfree_skb(skb);
247 return;
248 }
249
250 if (sta && sta->valid_links && link_sta) {
251 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
252
253 rx_status->link_valid = 1;
254 rx_status->link_id = link_sta->link_id;
255 }
256
257 ieee80211_rx_napi(mvm->hw, sta, skb, napi);
258 }
259
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)260 static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm,
261 struct ieee80211_rx_status *rx_status,
262 u32 rate_n_flags, int energy_a,
263 int energy_b)
264 {
265 int max_energy;
266 u32 rate_flags = rate_n_flags;
267
268 energy_a = energy_a ? -energy_a : S8_MIN;
269 energy_b = energy_b ? -energy_b : S8_MIN;
270 max_energy = max(energy_a, energy_b);
271
272 IWL_DEBUG_STATS(mvm, "energy In A %d B %d, and max %d\n",
273 energy_a, energy_b, max_energy);
274
275 rx_status->signal = max_energy;
276 rx_status->chains =
277 (rate_flags & RATE_MCS_ANT_AB_MSK) >> RATE_MCS_ANT_POS;
278 rx_status->chain_signal[0] = energy_a;
279 rx_status->chain_signal[1] = energy_b;
280 }
281
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)282 static int iwl_mvm_rx_mgmt_prot(struct ieee80211_sta *sta,
283 struct ieee80211_hdr *hdr,
284 struct iwl_rx_mpdu_desc *desc,
285 u32 status,
286 struct ieee80211_rx_status *stats)
287 {
288 struct iwl_mvm_sta *mvmsta;
289 struct iwl_mvm_vif *mvmvif;
290 u8 keyid;
291 struct ieee80211_key_conf *key;
292 u32 len = le16_to_cpu(desc->mpdu_len);
293 const u8 *frame = (void *)hdr;
294
295 if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) == IWL_RX_MPDU_STATUS_SEC_NONE)
296 return 0;
297
298 /*
299 * For non-beacon, we don't really care. But beacons may
300 * be filtered out, and we thus need the firmware's replay
301 * detection, otherwise beacons the firmware previously
302 * filtered could be replayed, or something like that, and
303 * it can filter a lot - though usually only if nothing has
304 * changed.
305 */
306 if (!ieee80211_is_beacon(hdr->frame_control))
307 return 0;
308
309 /* key mismatch - will also report !MIC_OK but we shouldn't count it */
310 if (!(status & IWL_RX_MPDU_STATUS_KEY_VALID))
311 return -1;
312
313 /* good cases */
314 if (likely(status & IWL_RX_MPDU_STATUS_MIC_OK &&
315 !(status & IWL_RX_MPDU_STATUS_REPLAY_ERROR))) {
316 stats->flag |= RX_FLAG_DECRYPTED;
317 return 0;
318 }
319
320 if (!sta)
321 return -1;
322
323 mvmsta = iwl_mvm_sta_from_mac80211(sta);
324
325 mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
326
327 /*
328 * both keys will have the same cipher and MIC length, use
329 * whichever one is available
330 */
331 key = rcu_dereference(mvmvif->bcn_prot.keys[0]);
332 if (!key) {
333 key = rcu_dereference(mvmvif->bcn_prot.keys[1]);
334 if (!key)
335 return -1;
336 }
337
338 if (len < key->icv_len + IEEE80211_GMAC_PN_LEN + 2)
339 return -1;
340
341 /* get the real key ID */
342 keyid = frame[len - key->icv_len - IEEE80211_GMAC_PN_LEN - 2];
343 /* and if that's the other key, look it up */
344 if (keyid != key->keyidx) {
345 /*
346 * shouldn't happen since firmware checked, but be safe
347 * in case the MIC length is wrong too, for example
348 */
349 if (keyid != 6 && keyid != 7)
350 return -1;
351 key = rcu_dereference(mvmvif->bcn_prot.keys[keyid - 6]);
352 if (!key)
353 return -1;
354 }
355
356 /* Report status to mac80211 */
357 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
358 ieee80211_key_mic_failure(key);
359 else if (status & IWL_RX_MPDU_STATUS_REPLAY_ERROR)
360 ieee80211_key_replay(key);
361
362 return -1;
363 }
364
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)365 static int iwl_mvm_rx_crypto(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
366 struct ieee80211_hdr *hdr,
367 struct ieee80211_rx_status *stats, u16 phy_info,
368 struct iwl_rx_mpdu_desc *desc,
369 u32 pkt_flags, int queue, u8 *crypt_len)
370 {
371 u32 status = le32_to_cpu(desc->status);
372
373 /*
374 * Drop UNKNOWN frames in aggregation, unless in monitor mode
375 * (where we don't have the keys).
376 * We limit this to aggregation because in TKIP this is a valid
377 * scenario, since we may not have the (correct) TTAK (phase 1
378 * key) in the firmware.
379 */
380 if (phy_info & IWL_RX_MPDU_PHY_AMPDU &&
381 (status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
382 IWL_RX_MPDU_STATUS_SEC_UNKNOWN && !mvm->monitor_on)
383 return -1;
384
385 if (unlikely(ieee80211_is_mgmt(hdr->frame_control) &&
386 !ieee80211_has_protected(hdr->frame_control)))
387 return iwl_mvm_rx_mgmt_prot(sta, hdr, desc, status, stats);
388
389 if (!ieee80211_has_protected(hdr->frame_control) ||
390 (status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
391 IWL_RX_MPDU_STATUS_SEC_NONE)
392 return 0;
393
394 /* TODO: handle packets encrypted with unknown alg */
395 #if defined(__FreeBSD__)
396 /* XXX-BZ do similar to rx.c for now as these are plenty. */
397 if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
398 IWL_RX_MPDU_STATUS_SEC_ENC_ERR)
399 return (0);
400 #endif
401
402 switch (status & IWL_RX_MPDU_STATUS_SEC_MASK) {
403 case IWL_RX_MPDU_STATUS_SEC_CCM:
404 case IWL_RX_MPDU_STATUS_SEC_GCM:
405 BUILD_BUG_ON(IEEE80211_CCMP_PN_LEN != IEEE80211_GCMP_PN_LEN);
406 /* alg is CCM: check MIC only */
407 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
408 return -1;
409
410 stats->flag |= RX_FLAG_DECRYPTED | RX_FLAG_MIC_STRIPPED;
411 *crypt_len = IEEE80211_CCMP_HDR_LEN;
412 return 0;
413 case IWL_RX_MPDU_STATUS_SEC_TKIP:
414 /* Don't drop the frame and decrypt it in SW */
415 if (!fw_has_api(&mvm->fw->ucode_capa,
416 IWL_UCODE_TLV_API_DEPRECATE_TTAK) &&
417 !(status & IWL_RX_MPDU_RES_STATUS_TTAK_OK))
418 return 0;
419
420 if (mvm->trans->trans_cfg->gen2 &&
421 !(status & RX_MPDU_RES_STATUS_MIC_OK))
422 stats->flag |= RX_FLAG_MMIC_ERROR;
423
424 *crypt_len = IEEE80211_TKIP_IV_LEN;
425 fallthrough;
426 case IWL_RX_MPDU_STATUS_SEC_WEP:
427 if (!(status & IWL_RX_MPDU_STATUS_ICV_OK))
428 return -1;
429
430 stats->flag |= RX_FLAG_DECRYPTED;
431 if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
432 IWL_RX_MPDU_STATUS_SEC_WEP)
433 *crypt_len = IEEE80211_WEP_IV_LEN;
434
435 if (pkt_flags & FH_RSCSR_RADA_EN) {
436 stats->flag |= RX_FLAG_ICV_STRIPPED;
437 if (mvm->trans->trans_cfg->gen2)
438 stats->flag |= RX_FLAG_MMIC_STRIPPED;
439 }
440
441 return 0;
442 case IWL_RX_MPDU_STATUS_SEC_EXT_ENC:
443 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
444 return -1;
445 stats->flag |= RX_FLAG_DECRYPTED;
446 return 0;
447 case RX_MPDU_RES_STATUS_SEC_CMAC_GMAC_ENC:
448 break;
449 default:
450 /*
451 * Sometimes we can get frames that were not decrypted
452 * because the firmware didn't have the keys yet. This can
453 * happen after connection where we can get multicast frames
454 * before the GTK is installed.
455 * Silently drop those frames.
456 * Also drop un-decrypted frames in monitor mode.
457 */
458 if (!is_multicast_ether_addr(hdr->addr1) &&
459 !mvm->monitor_on && net_ratelimit())
460 #if defined(__linux__)
461 IWL_WARN(mvm, "Unhandled alg: 0x%x\n", status);
462 #elif defined(__FreeBSD__)
463 IWL_WARN(mvm, "%s: Unhandled alg: 0x%x\n", __func__, status);
464 #endif
465 }
466
467 return 0;
468 }
469
iwl_mvm_rx_csum(struct iwl_mvm * mvm,struct ieee80211_sta * sta,struct sk_buff * skb,struct iwl_rx_packet * pkt)470 static void iwl_mvm_rx_csum(struct iwl_mvm *mvm,
471 struct ieee80211_sta *sta,
472 struct sk_buff *skb,
473 struct iwl_rx_packet *pkt)
474 {
475 struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
476
477 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
478 if (pkt->len_n_flags & cpu_to_le32(FH_RSCSR_RPA_EN)) {
479 u16 hwsum = be16_to_cpu(desc->v3.raw_xsum);
480
481 skb->ip_summed = CHECKSUM_COMPLETE;
482 skb->csum = csum_unfold(~(__force __sum16)hwsum);
483 }
484 } else {
485 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
486 struct iwl_mvm_vif *mvmvif;
487 u16 flags = le16_to_cpu(desc->l3l4_flags);
488 u8 l3_prot = (u8)((flags & IWL_RX_L3L4_L3_PROTO_MASK) >>
489 IWL_RX_L3_PROTO_POS);
490
491 mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
492
493 if (mvmvif->features & NETIF_F_RXCSUM &&
494 flags & IWL_RX_L3L4_TCP_UDP_CSUM_OK &&
495 (flags & IWL_RX_L3L4_IP_HDR_CSUM_OK ||
496 l3_prot == IWL_RX_L3_TYPE_IPV6 ||
497 l3_prot == IWL_RX_L3_TYPE_IPV6_FRAG))
498 skb->ip_summed = CHECKSUM_UNNECESSARY;
499 }
500 }
501
502 /*
503 * returns true if a packet is a duplicate or invalid tid and should be dropped.
504 * Updates AMSDU PN tracking info
505 */
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)506 static bool iwl_mvm_is_dup(struct ieee80211_sta *sta, int queue,
507 struct ieee80211_rx_status *rx_status,
508 struct ieee80211_hdr *hdr,
509 struct iwl_rx_mpdu_desc *desc)
510 {
511 struct iwl_mvm_sta *mvm_sta;
512 struct iwl_mvm_rxq_dup_data *dup_data;
513 u8 tid, sub_frame_idx;
514
515 if (WARN_ON(IS_ERR_OR_NULL(sta)))
516 return false;
517
518 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
519 #if defined(__FreeBSD__)
520 if (WARN_ON(mvm_sta->dup_data == NULL))
521 return false;
522 #endif
523 dup_data = &mvm_sta->dup_data[queue];
524
525 /*
526 * Drop duplicate 802.11 retransmissions
527 * (IEEE 802.11-2012: 9.3.2.10 "Duplicate detection and recovery")
528 */
529 if (ieee80211_is_ctl(hdr->frame_control) ||
530 ieee80211_is_qos_nullfunc(hdr->frame_control) ||
531 is_multicast_ether_addr(hdr->addr1)) {
532 rx_status->flag |= RX_FLAG_DUP_VALIDATED;
533 return false;
534 }
535
536 if (ieee80211_is_data_qos(hdr->frame_control)) {
537 /* frame has qos control */
538 tid = ieee80211_get_tid(hdr);
539 if (tid >= IWL_MAX_TID_COUNT)
540 return true;
541 } else {
542 tid = IWL_MAX_TID_COUNT;
543 }
544
545 /* If this wasn't a part of an A-MSDU the sub-frame index will be 0 */
546 sub_frame_idx = desc->amsdu_info &
547 IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
548
549 if (unlikely(ieee80211_has_retry(hdr->frame_control) &&
550 dup_data->last_seq[tid] == hdr->seq_ctrl &&
551 dup_data->last_sub_frame[tid] >= sub_frame_idx))
552 return true;
553
554 /* Allow same PN as the first subframe for following sub frames */
555 if (dup_data->last_seq[tid] == hdr->seq_ctrl &&
556 sub_frame_idx > dup_data->last_sub_frame[tid] &&
557 desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU)
558 rx_status->flag |= RX_FLAG_ALLOW_SAME_PN;
559
560 dup_data->last_seq[tid] = hdr->seq_ctrl;
561 dup_data->last_sub_frame[tid] = sub_frame_idx;
562
563 rx_status->flag |= RX_FLAG_DUP_VALIDATED;
564
565 return false;
566 }
567
568 /*
569 * Returns true if sn2 - buffer_size < sn1 < sn2.
570 * To be used only in order to compare reorder buffer head with NSSN.
571 * We fully trust NSSN unless it is behind us due to reorder timeout.
572 * Reorder timeout can only bring us up to buffer_size SNs ahead of NSSN.
573 */
iwl_mvm_is_sn_less(u16 sn1,u16 sn2,u16 buffer_size)574 static bool iwl_mvm_is_sn_less(u16 sn1, u16 sn2, u16 buffer_size)
575 {
576 return ieee80211_sn_less(sn1, sn2) &&
577 !ieee80211_sn_less(sn1, sn2 - buffer_size);
578 }
579
iwl_mvm_sync_nssn(struct iwl_mvm * mvm,u8 baid,u16 nssn)580 static void iwl_mvm_sync_nssn(struct iwl_mvm *mvm, u8 baid, u16 nssn)
581 {
582 if (IWL_MVM_USE_NSSN_SYNC) {
583 struct iwl_mvm_nssn_sync_data notif = {
584 .baid = baid,
585 .nssn = nssn,
586 };
587
588 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NSSN_SYNC, false,
589 ¬if, sizeof(notif));
590 }
591 }
592
593 #define RX_REORDER_BUF_TIMEOUT_MQ (HZ / 10)
594
595 enum iwl_mvm_release_flags {
596 IWL_MVM_RELEASE_SEND_RSS_SYNC = BIT(0),
597 IWL_MVM_RELEASE_FROM_RSS_SYNC = BIT(1),
598 };
599
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,u32 flags)600 static void iwl_mvm_release_frames(struct iwl_mvm *mvm,
601 struct ieee80211_sta *sta,
602 struct napi_struct *napi,
603 struct iwl_mvm_baid_data *baid_data,
604 struct iwl_mvm_reorder_buffer *reorder_buf,
605 u16 nssn, u32 flags)
606 {
607 struct iwl_mvm_reorder_buf_entry *entries =
608 &baid_data->entries[reorder_buf->queue *
609 baid_data->entries_per_queue];
610 u16 ssn = reorder_buf->head_sn;
611
612 lockdep_assert_held(&reorder_buf->lock);
613
614 /*
615 * We keep the NSSN not too far behind, if we are sync'ing it and it
616 * is more than 2048 ahead of us, it must be behind us. Discard it.
617 * This can happen if the queue that hit the 0 / 2048 seqno was lagging
618 * behind and this queue already processed packets. The next if
619 * would have caught cases where this queue would have processed less
620 * than 64 packets, but it may have processed more than 64 packets.
621 */
622 if ((flags & IWL_MVM_RELEASE_FROM_RSS_SYNC) &&
623 ieee80211_sn_less(nssn, ssn))
624 goto set_timer;
625
626 /* ignore nssn smaller than head sn - this can happen due to timeout */
627 if (iwl_mvm_is_sn_less(nssn, ssn, reorder_buf->buf_size))
628 goto set_timer;
629
630 while (iwl_mvm_is_sn_less(ssn, nssn, reorder_buf->buf_size)) {
631 int index = ssn % reorder_buf->buf_size;
632 struct sk_buff_head *skb_list = &entries[index].e.frames;
633 struct sk_buff *skb;
634
635 ssn = ieee80211_sn_inc(ssn);
636 if ((flags & IWL_MVM_RELEASE_SEND_RSS_SYNC) &&
637 (ssn == 2048 || ssn == 0))
638 iwl_mvm_sync_nssn(mvm, baid_data->baid, ssn);
639
640 /*
641 * Empty the list. Will have more than one frame for A-MSDU.
642 * Empty list is valid as well since nssn indicates frames were
643 * received.
644 */
645 while ((skb = __skb_dequeue(skb_list))) {
646 iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb,
647 reorder_buf->queue,
648 sta, NULL /* FIXME */);
649 reorder_buf->num_stored--;
650 }
651 }
652 reorder_buf->head_sn = nssn;
653
654 set_timer:
655 if (reorder_buf->num_stored && !reorder_buf->removed) {
656 u16 index = reorder_buf->head_sn % reorder_buf->buf_size;
657
658 while (skb_queue_empty(&entries[index].e.frames))
659 index = (index + 1) % reorder_buf->buf_size;
660 /* modify timer to match next frame's expiration time */
661 mod_timer(&reorder_buf->reorder_timer,
662 entries[index].e.reorder_time + 1 +
663 RX_REORDER_BUF_TIMEOUT_MQ);
664 } else {
665 del_timer(&reorder_buf->reorder_timer);
666 }
667 }
668
iwl_mvm_reorder_timer_expired(struct timer_list * t)669 void iwl_mvm_reorder_timer_expired(struct timer_list *t)
670 {
671 struct iwl_mvm_reorder_buffer *buf = from_timer(buf, t, reorder_timer);
672 struct iwl_mvm_baid_data *baid_data =
673 iwl_mvm_baid_data_from_reorder_buf(buf);
674 struct iwl_mvm_reorder_buf_entry *entries =
675 &baid_data->entries[buf->queue * baid_data->entries_per_queue];
676 int i;
677 u16 sn = 0, index = 0;
678 bool expired = false;
679 bool cont = false;
680
681 spin_lock(&buf->lock);
682
683 if (!buf->num_stored || buf->removed) {
684 spin_unlock(&buf->lock);
685 return;
686 }
687
688 for (i = 0; i < buf->buf_size ; i++) {
689 index = (buf->head_sn + i) % buf->buf_size;
690
691 if (skb_queue_empty(&entries[index].e.frames)) {
692 /*
693 * If there is a hole and the next frame didn't expire
694 * we want to break and not advance SN
695 */
696 cont = false;
697 continue;
698 }
699 if (!cont &&
700 !time_after(jiffies, entries[index].e.reorder_time +
701 RX_REORDER_BUF_TIMEOUT_MQ))
702 break;
703
704 expired = true;
705 /* continue until next hole after this expired frames */
706 cont = true;
707 sn = ieee80211_sn_add(buf->head_sn, i + 1);
708 }
709
710 if (expired) {
711 struct ieee80211_sta *sta;
712 struct iwl_mvm_sta *mvmsta;
713 u8 sta_id = ffs(baid_data->sta_mask) - 1;
714
715 rcu_read_lock();
716 sta = rcu_dereference(buf->mvm->fw_id_to_mac_id[sta_id]);
717 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {
718 rcu_read_unlock();
719 goto out;
720 }
721
722 mvmsta = iwl_mvm_sta_from_mac80211(sta);
723
724 /* SN is set to the last expired frame + 1 */
725 IWL_DEBUG_HT(buf->mvm,
726 "Releasing expired frames for sta %u, sn %d\n",
727 sta_id, sn);
728 iwl_mvm_event_frame_timeout_callback(buf->mvm, mvmsta->vif,
729 sta, baid_data->tid);
730 iwl_mvm_release_frames(buf->mvm, sta, NULL, baid_data,
731 buf, sn, IWL_MVM_RELEASE_SEND_RSS_SYNC);
732 rcu_read_unlock();
733 } else {
734 /*
735 * If no frame expired and there are stored frames, index is now
736 * pointing to the first unexpired frame - modify timer
737 * accordingly to this frame.
738 */
739 mod_timer(&buf->reorder_timer,
740 entries[index].e.reorder_time +
741 1 + RX_REORDER_BUF_TIMEOUT_MQ);
742 }
743
744 out:
745 spin_unlock(&buf->lock);
746 }
747
iwl_mvm_del_ba(struct iwl_mvm * mvm,int queue,struct iwl_mvm_delba_data * data)748 static void iwl_mvm_del_ba(struct iwl_mvm *mvm, int queue,
749 struct iwl_mvm_delba_data *data)
750 {
751 struct iwl_mvm_baid_data *ba_data;
752 struct ieee80211_sta *sta;
753 struct iwl_mvm_reorder_buffer *reorder_buf;
754 u8 baid = data->baid;
755 u32 sta_id;
756
757 if (WARN_ONCE(baid >= IWL_MAX_BAID, "invalid BAID: %x\n", baid))
758 return;
759
760 rcu_read_lock();
761
762 ba_data = rcu_dereference(mvm->baid_map[baid]);
763 if (WARN_ON_ONCE(!ba_data))
764 goto out;
765
766 /* pick any STA ID to find the pointer */
767 sta_id = ffs(ba_data->sta_mask) - 1;
768 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
769 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
770 goto out;
771
772 reorder_buf = &ba_data->reorder_buf[queue];
773
774 /* release all frames that are in the reorder buffer to the stack */
775 spin_lock_bh(&reorder_buf->lock);
776 iwl_mvm_release_frames(mvm, sta, NULL, ba_data, reorder_buf,
777 ieee80211_sn_add(reorder_buf->head_sn,
778 reorder_buf->buf_size),
779 0);
780 spin_unlock_bh(&reorder_buf->lock);
781 del_timer_sync(&reorder_buf->reorder_timer);
782
783 out:
784 rcu_read_unlock();
785 }
786
iwl_mvm_release_frames_from_notif(struct iwl_mvm * mvm,struct napi_struct * napi,u8 baid,u16 nssn,int queue,u32 flags)787 static void iwl_mvm_release_frames_from_notif(struct iwl_mvm *mvm,
788 struct napi_struct *napi,
789 u8 baid, u16 nssn, int queue,
790 u32 flags)
791 {
792 struct ieee80211_sta *sta;
793 struct iwl_mvm_reorder_buffer *reorder_buf;
794 struct iwl_mvm_baid_data *ba_data;
795 u32 sta_id;
796
797 IWL_DEBUG_HT(mvm, "Frame release notification for BAID %u, NSSN %d\n",
798 baid, nssn);
799
800 if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID ||
801 baid >= ARRAY_SIZE(mvm->baid_map)))
802 return;
803
804 rcu_read_lock();
805
806 ba_data = rcu_dereference(mvm->baid_map[baid]);
807 if (!ba_data) {
808 WARN(!(flags & IWL_MVM_RELEASE_FROM_RSS_SYNC),
809 "BAID %d not found in map\n", baid);
810 goto out;
811 }
812
813 /* pick any STA ID to find the pointer */
814 sta_id = ffs(ba_data->sta_mask) - 1;
815 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
816 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
817 goto out;
818
819 reorder_buf = &ba_data->reorder_buf[queue];
820
821 spin_lock_bh(&reorder_buf->lock);
822 iwl_mvm_release_frames(mvm, sta, napi, ba_data,
823 reorder_buf, nssn, flags);
824 spin_unlock_bh(&reorder_buf->lock);
825
826 out:
827 rcu_read_unlock();
828 }
829
iwl_mvm_nssn_sync(struct iwl_mvm * mvm,struct napi_struct * napi,int queue,const struct iwl_mvm_nssn_sync_data * data)830 static void iwl_mvm_nssn_sync(struct iwl_mvm *mvm,
831 struct napi_struct *napi, int queue,
832 const struct iwl_mvm_nssn_sync_data *data)
833 {
834 iwl_mvm_release_frames_from_notif(mvm, napi, data->baid,
835 data->nssn, queue,
836 IWL_MVM_RELEASE_FROM_RSS_SYNC);
837 }
838
iwl_mvm_rx_queue_notif(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)839 void iwl_mvm_rx_queue_notif(struct iwl_mvm *mvm, struct napi_struct *napi,
840 struct iwl_rx_cmd_buffer *rxb, int queue)
841 {
842 struct iwl_rx_packet *pkt = rxb_addr(rxb);
843 struct iwl_rxq_sync_notification *notif;
844 struct iwl_mvm_internal_rxq_notif *internal_notif;
845 u32 len = iwl_rx_packet_payload_len(pkt);
846
847 notif = (void *)pkt->data;
848 internal_notif = (void *)notif->payload;
849
850 if (WARN_ONCE(len < sizeof(*notif) + sizeof(*internal_notif),
851 "invalid notification size %d (%d)",
852 len, (int)(sizeof(*notif) + sizeof(*internal_notif))))
853 return;
854 len -= sizeof(*notif) + sizeof(*internal_notif);
855
856 if (internal_notif->sync &&
857 mvm->queue_sync_cookie != internal_notif->cookie) {
858 WARN_ONCE(1, "Received expired RX queue sync message\n");
859 return;
860 }
861
862 switch (internal_notif->type) {
863 case IWL_MVM_RXQ_EMPTY:
864 WARN_ONCE(len, "invalid empty notification size %d", len);
865 break;
866 case IWL_MVM_RXQ_NOTIF_DEL_BA:
867 if (WARN_ONCE(len != sizeof(struct iwl_mvm_delba_data),
868 "invalid delba notification size %d (%d)",
869 len, (int)sizeof(struct iwl_mvm_delba_data)))
870 break;
871 iwl_mvm_del_ba(mvm, queue, (void *)internal_notif->data);
872 break;
873 case IWL_MVM_RXQ_NSSN_SYNC:
874 if (WARN_ONCE(len != sizeof(struct iwl_mvm_nssn_sync_data),
875 "invalid nssn sync notification size %d (%d)",
876 len, (int)sizeof(struct iwl_mvm_nssn_sync_data)))
877 break;
878 iwl_mvm_nssn_sync(mvm, napi, queue,
879 (void *)internal_notif->data);
880 break;
881 default:
882 WARN_ONCE(1, "Invalid identifier %d", internal_notif->type);
883 }
884
885 if (internal_notif->sync) {
886 WARN_ONCE(!test_and_clear_bit(queue, &mvm->queue_sync_state),
887 "queue sync: queue %d responded a second time!\n",
888 queue);
889 if (READ_ONCE(mvm->queue_sync_state) == 0)
890 wake_up(&mvm->rx_sync_waitq);
891 }
892 }
893
iwl_mvm_oldsn_workaround(struct iwl_mvm * mvm,struct ieee80211_sta * sta,int tid,struct iwl_mvm_reorder_buffer * buffer,u32 reorder,u32 gp2,int queue)894 static void iwl_mvm_oldsn_workaround(struct iwl_mvm *mvm,
895 struct ieee80211_sta *sta, int tid,
896 struct iwl_mvm_reorder_buffer *buffer,
897 u32 reorder, u32 gp2, int queue)
898 {
899 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
900
901 if (gp2 != buffer->consec_oldsn_ampdu_gp2) {
902 /* we have a new (A-)MPDU ... */
903
904 /*
905 * reset counter to 0 if we didn't have any oldsn in
906 * the last A-MPDU (as detected by GP2 being identical)
907 */
908 if (!buffer->consec_oldsn_prev_drop)
909 buffer->consec_oldsn_drops = 0;
910
911 /* either way, update our tracking state */
912 buffer->consec_oldsn_ampdu_gp2 = gp2;
913 } else if (buffer->consec_oldsn_prev_drop) {
914 /*
915 * tracking state didn't change, and we had an old SN
916 * indication before - do nothing in this case, we
917 * already noted this one down and are waiting for the
918 * next A-MPDU (by GP2)
919 */
920 return;
921 }
922
923 /* return unless this MPDU has old SN */
924 if (!(reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN))
925 return;
926
927 /* update state */
928 buffer->consec_oldsn_prev_drop = 1;
929 buffer->consec_oldsn_drops++;
930
931 /* if limit is reached, send del BA and reset state */
932 if (buffer->consec_oldsn_drops == IWL_MVM_AMPDU_CONSEC_DROPS_DELBA) {
933 IWL_WARN(mvm,
934 "reached %d old SN frames from %pM on queue %d, stopping BA session on TID %d\n",
935 IWL_MVM_AMPDU_CONSEC_DROPS_DELBA,
936 sta->addr, queue, tid);
937 ieee80211_stop_rx_ba_session(mvmsta->vif, BIT(tid), sta->addr);
938 buffer->consec_oldsn_prev_drop = 0;
939 buffer->consec_oldsn_drops = 0;
940 }
941 }
942
943 /*
944 * Returns true if the MPDU was buffered\dropped, false if it should be passed
945 * to upper layer.
946 */
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)947 static bool iwl_mvm_reorder(struct iwl_mvm *mvm,
948 struct napi_struct *napi,
949 int queue,
950 struct ieee80211_sta *sta,
951 struct sk_buff *skb,
952 struct iwl_rx_mpdu_desc *desc)
953 {
954 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
955 struct ieee80211_hdr *hdr = (void *)skb_mac_header(skb);
956 struct iwl_mvm_baid_data *baid_data;
957 struct iwl_mvm_reorder_buffer *buffer;
958 struct sk_buff *tail;
959 u32 reorder = le32_to_cpu(desc->reorder_data);
960 bool amsdu = desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU;
961 bool last_subframe =
962 desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME;
963 #if defined(__linux__)
964 u8 tid = ieee80211_get_tid(hdr);
965 #elif defined(__FreeBSD__)
966 u8 tid;
967 #endif
968 u8 sub_frame_idx = desc->amsdu_info &
969 IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
970 struct iwl_mvm_reorder_buf_entry *entries;
971 u32 sta_mask;
972 int index;
973 u16 nssn, sn;
974 u8 baid;
975
976 baid = (reorder & IWL_RX_MPDU_REORDER_BAID_MASK) >>
977 IWL_RX_MPDU_REORDER_BAID_SHIFT;
978
979 /*
980 * This also covers the case of receiving a Block Ack Request
981 * outside a BA session; we'll pass it to mac80211 and that
982 * then sends a delBA action frame.
983 * This also covers pure monitor mode, in which case we won't
984 * have any BA sessions.
985 */
986 if (baid == IWL_RX_REORDER_DATA_INVALID_BAID)
987 return false;
988
989 /* no sta yet */
990 if (WARN_ONCE(IS_ERR_OR_NULL(sta),
991 "Got valid BAID without a valid station assigned\n"))
992 return false;
993
994 /* not a data packet or a bar */
995 if (!ieee80211_is_back_req(hdr->frame_control) &&
996 (!ieee80211_is_data_qos(hdr->frame_control) ||
997 is_multicast_ether_addr(hdr->addr1)))
998 return false;
999
1000 if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
1001 return false;
1002
1003 baid_data = rcu_dereference(mvm->baid_map[baid]);
1004 if (!baid_data) {
1005 IWL_DEBUG_RX(mvm,
1006 "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
1007 baid, reorder);
1008 return false;
1009 }
1010
1011 #if defined(__FreeBSD__)
1012 tid = ieee80211_get_tid(hdr);
1013 #endif
1014 rcu_read_lock();
1015 sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1);
1016 rcu_read_unlock();
1017
1018 if (IWL_FW_CHECK(mvm,
1019 tid != baid_data->tid ||
1020 !(sta_mask & baid_data->sta_mask),
1021 "baid 0x%x is mapped to sta_mask:0x%x tid:%d, but was received for sta_mask:0x%x tid:%d\n",
1022 baid, baid_data->sta_mask, baid_data->tid,
1023 sta_mask, tid))
1024 return false;
1025
1026 nssn = reorder & IWL_RX_MPDU_REORDER_NSSN_MASK;
1027 sn = (reorder & IWL_RX_MPDU_REORDER_SN_MASK) >>
1028 IWL_RX_MPDU_REORDER_SN_SHIFT;
1029
1030 buffer = &baid_data->reorder_buf[queue];
1031 entries = &baid_data->entries[queue * baid_data->entries_per_queue];
1032
1033 spin_lock_bh(&buffer->lock);
1034
1035 if (!buffer->valid) {
1036 if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN) {
1037 spin_unlock_bh(&buffer->lock);
1038 return false;
1039 }
1040 buffer->valid = true;
1041 }
1042
1043 if (ieee80211_is_back_req(hdr->frame_control)) {
1044 iwl_mvm_release_frames(mvm, sta, napi, baid_data,
1045 buffer, nssn, 0);
1046 goto drop;
1047 }
1048
1049 /*
1050 * If there was a significant jump in the nssn - adjust.
1051 * If the SN is smaller than the NSSN it might need to first go into
1052 * the reorder buffer, in which case we just release up to it and the
1053 * rest of the function will take care of storing it and releasing up to
1054 * the nssn.
1055 * This should not happen. This queue has been lagging and it should
1056 * have been updated by a IWL_MVM_RXQ_NSSN_SYNC notification. Be nice
1057 * and update the other queues.
1058 */
1059 if (!iwl_mvm_is_sn_less(nssn, buffer->head_sn + buffer->buf_size,
1060 buffer->buf_size) ||
1061 !ieee80211_sn_less(sn, buffer->head_sn + buffer->buf_size)) {
1062 u16 min_sn = ieee80211_sn_less(sn, nssn) ? sn : nssn;
1063
1064 iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer,
1065 min_sn, IWL_MVM_RELEASE_SEND_RSS_SYNC);
1066 }
1067
1068 iwl_mvm_oldsn_workaround(mvm, sta, tid, buffer, reorder,
1069 rx_status->device_timestamp, queue);
1070
1071 /* drop any oudated packets */
1072 if (ieee80211_sn_less(sn, buffer->head_sn))
1073 goto drop;
1074
1075 /* release immediately if allowed by nssn and no stored frames */
1076 if (!buffer->num_stored && ieee80211_sn_less(sn, nssn)) {
1077 if (iwl_mvm_is_sn_less(buffer->head_sn, nssn,
1078 buffer->buf_size) &&
1079 (!amsdu || last_subframe)) {
1080 /*
1081 * If we crossed the 2048 or 0 SN, notify all the
1082 * queues. This is done in order to avoid having a
1083 * head_sn that lags behind for too long. When that
1084 * happens, we can get to a situation where the head_sn
1085 * is within the interval [nssn - buf_size : nssn]
1086 * which will make us think that the nssn is a packet
1087 * that we already freed because of the reordering
1088 * buffer and we will ignore it. So maintain the
1089 * head_sn somewhat updated across all the queues:
1090 * when it crosses 0 and 2048.
1091 */
1092 if (sn == 2048 || sn == 0)
1093 iwl_mvm_sync_nssn(mvm, baid, sn);
1094 buffer->head_sn = nssn;
1095 }
1096 /* No need to update AMSDU last SN - we are moving the head */
1097 spin_unlock_bh(&buffer->lock);
1098 return false;
1099 }
1100
1101 /*
1102 * release immediately if there are no stored frames, and the sn is
1103 * equal to the head.
1104 * This can happen due to reorder timer, where NSSN is behind head_sn.
1105 * When we released everything, and we got the next frame in the
1106 * sequence, according to the NSSN we can't release immediately,
1107 * while technically there is no hole and we can move forward.
1108 */
1109 if (!buffer->num_stored && sn == buffer->head_sn) {
1110 if (!amsdu || last_subframe) {
1111 if (sn == 2048 || sn == 0)
1112 iwl_mvm_sync_nssn(mvm, baid, sn);
1113 buffer->head_sn = ieee80211_sn_inc(buffer->head_sn);
1114 }
1115 /* No need to update AMSDU last SN - we are moving the head */
1116 spin_unlock_bh(&buffer->lock);
1117 return false;
1118 }
1119
1120 index = sn % buffer->buf_size;
1121
1122 /*
1123 * Check if we already stored this frame
1124 * As AMSDU is either received or not as whole, logic is simple:
1125 * If we have frames in that position in the buffer and the last frame
1126 * originated from AMSDU had a different SN then it is a retransmission.
1127 * If it is the same SN then if the subframe index is incrementing it
1128 * is the same AMSDU - otherwise it is a retransmission.
1129 */
1130 tail = skb_peek_tail(&entries[index].e.frames);
1131 if (tail && !amsdu)
1132 goto drop;
1133 else if (tail && (sn != buffer->last_amsdu ||
1134 buffer->last_sub_index >= sub_frame_idx))
1135 goto drop;
1136
1137 /* put in reorder buffer */
1138 __skb_queue_tail(&entries[index].e.frames, skb);
1139 buffer->num_stored++;
1140 entries[index].e.reorder_time = jiffies;
1141
1142 if (amsdu) {
1143 buffer->last_amsdu = sn;
1144 buffer->last_sub_index = sub_frame_idx;
1145 }
1146
1147 /*
1148 * We cannot trust NSSN for AMSDU sub-frames that are not the last.
1149 * The reason is that NSSN advances on the first sub-frame, and may
1150 * cause the reorder buffer to advance before all the sub-frames arrive.
1151 * Example: reorder buffer contains SN 0 & 2, and we receive AMSDU with
1152 * SN 1. NSSN for first sub frame will be 3 with the result of driver
1153 * releasing SN 0,1, 2. When sub-frame 1 arrives - reorder buffer is
1154 * already ahead and it will be dropped.
1155 * If the last sub-frame is not on this queue - we will get frame
1156 * release notification with up to date NSSN.
1157 */
1158 if (!amsdu || last_subframe)
1159 iwl_mvm_release_frames(mvm, sta, napi, baid_data,
1160 buffer, nssn,
1161 IWL_MVM_RELEASE_SEND_RSS_SYNC);
1162
1163 spin_unlock_bh(&buffer->lock);
1164 return true;
1165
1166 drop:
1167 kfree_skb(skb);
1168 spin_unlock_bh(&buffer->lock);
1169 return true;
1170 }
1171
iwl_mvm_agg_rx_received(struct iwl_mvm * mvm,u32 reorder_data,u8 baid)1172 static void iwl_mvm_agg_rx_received(struct iwl_mvm *mvm,
1173 u32 reorder_data, u8 baid)
1174 {
1175 unsigned long now = jiffies;
1176 unsigned long timeout;
1177 struct iwl_mvm_baid_data *data;
1178
1179 rcu_read_lock();
1180
1181 data = rcu_dereference(mvm->baid_map[baid]);
1182 if (!data) {
1183 IWL_DEBUG_RX(mvm,
1184 "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
1185 baid, reorder_data);
1186 goto out;
1187 }
1188
1189 if (!data->timeout)
1190 goto out;
1191
1192 timeout = data->timeout;
1193 /*
1194 * Do not update last rx all the time to avoid cache bouncing
1195 * between the rx queues.
1196 * Update it every timeout. Worst case is the session will
1197 * expire after ~ 2 * timeout, which doesn't matter that much.
1198 */
1199 if (time_before(data->last_rx + TU_TO_JIFFIES(timeout), now))
1200 /* Update is atomic */
1201 data->last_rx = now;
1202
1203 out:
1204 rcu_read_unlock();
1205 }
1206
iwl_mvm_flip_address(u8 * addr)1207 static void iwl_mvm_flip_address(u8 *addr)
1208 {
1209 int i;
1210 u8 mac_addr[ETH_ALEN];
1211
1212 for (i = 0; i < ETH_ALEN; i++)
1213 mac_addr[i] = addr[ETH_ALEN - i - 1];
1214 ether_addr_copy(addr, mac_addr);
1215 }
1216
1217 struct iwl_mvm_rx_phy_data {
1218 enum iwl_rx_phy_info_type info_type;
1219 __le32 d0, d1, d2, d3, eht_d4, d5;
1220 __le16 d4;
1221 bool with_data;
1222 bool first_subframe;
1223 __le32 rx_vec[4];
1224
1225 u32 rate_n_flags;
1226 u32 gp2_on_air_rise;
1227 u16 phy_info;
1228 u8 energy_a, energy_b;
1229 u8 channel;
1230 };
1231
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)1232 static void iwl_mvm_decode_he_mu_ext(struct iwl_mvm *mvm,
1233 struct iwl_mvm_rx_phy_data *phy_data,
1234 struct ieee80211_radiotap_he_mu *he_mu)
1235 {
1236 u32 phy_data2 = le32_to_cpu(phy_data->d2);
1237 u32 phy_data3 = le32_to_cpu(phy_data->d3);
1238 u16 phy_data4 = le16_to_cpu(phy_data->d4);
1239 u32 rate_n_flags = phy_data->rate_n_flags;
1240
1241 if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CRC_OK, phy_data4)) {
1242 he_mu->flags1 |=
1243 cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_RU_KNOWN |
1244 IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU_KNOWN);
1245
1246 he_mu->flags1 |=
1247 le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CTR_RU,
1248 phy_data4),
1249 IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU);
1250
1251 he_mu->ru_ch1[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU0,
1252 phy_data2);
1253 he_mu->ru_ch1[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU1,
1254 phy_data3);
1255 he_mu->ru_ch1[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU2,
1256 phy_data2);
1257 he_mu->ru_ch1[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU3,
1258 phy_data3);
1259 }
1260
1261 if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CRC_OK, phy_data4) &&
1262 (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) != RATE_MCS_CHAN_WIDTH_20) {
1263 he_mu->flags1 |=
1264 cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_RU_KNOWN |
1265 IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_CTR_26T_RU_KNOWN);
1266
1267 he_mu->flags2 |=
1268 le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CTR_RU,
1269 phy_data4),
1270 IEEE80211_RADIOTAP_HE_MU_FLAGS2_CH2_CTR_26T_RU);
1271
1272 he_mu->ru_ch2[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU0,
1273 phy_data2);
1274 he_mu->ru_ch2[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU1,
1275 phy_data3);
1276 he_mu->ru_ch2[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU2,
1277 phy_data2);
1278 he_mu->ru_ch2[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU3,
1279 phy_data3);
1280 }
1281 }
1282
1283 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)1284 iwl_mvm_decode_he_phy_ru_alloc(struct iwl_mvm_rx_phy_data *phy_data,
1285 struct ieee80211_radiotap_he *he,
1286 struct ieee80211_radiotap_he_mu *he_mu,
1287 struct ieee80211_rx_status *rx_status)
1288 {
1289 /*
1290 * Unfortunately, we have to leave the mac80211 data
1291 * incorrect for the case that we receive an HE-MU
1292 * transmission and *don't* have the HE phy data (due
1293 * to the bits being used for TSF). This shouldn't
1294 * happen though as management frames where we need
1295 * the TSF/timers are not be transmitted in HE-MU.
1296 */
1297 u8 ru = le32_get_bits(phy_data->d1, IWL_RX_PHY_DATA1_HE_RU_ALLOC_MASK);
1298 u32 rate_n_flags = phy_data->rate_n_flags;
1299 u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK_V1;
1300 u8 offs = 0;
1301
1302 rx_status->bw = RATE_INFO_BW_HE_RU;
1303
1304 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
1305
1306 switch (ru) {
1307 case 0 ... 36:
1308 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26;
1309 offs = ru;
1310 break;
1311 case 37 ... 52:
1312 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52;
1313 offs = ru - 37;
1314 break;
1315 case 53 ... 60:
1316 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
1317 offs = ru - 53;
1318 break;
1319 case 61 ... 64:
1320 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242;
1321 offs = ru - 61;
1322 break;
1323 case 65 ... 66:
1324 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484;
1325 offs = ru - 65;
1326 break;
1327 case 67:
1328 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996;
1329 break;
1330 case 68:
1331 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996;
1332 break;
1333 }
1334 he->data2 |= le16_encode_bits(offs,
1335 IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET);
1336 he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_KNOWN |
1337 IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET_KNOWN);
1338 if (phy_data->d1 & cpu_to_le32(IWL_RX_PHY_DATA1_HE_RU_ALLOC_SEC80))
1339 he->data2 |=
1340 cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_SEC);
1341
1342 #define CHECK_BW(bw) \
1343 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_ ## bw ## MHZ != \
1344 RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS); \
1345 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_ ## bw ## MHZ != \
1346 RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS)
1347 CHECK_BW(20);
1348 CHECK_BW(40);
1349 CHECK_BW(80);
1350 CHECK_BW(160);
1351
1352 if (he_mu)
1353 he_mu->flags2 |=
1354 le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK_V1,
1355 rate_n_flags),
1356 IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW);
1357 else if (he_type == RATE_MCS_HE_TYPE_TRIG_V1)
1358 he->data6 |=
1359 cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_KNOWN) |
1360 le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK_V1,
1361 rate_n_flags),
1362 IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW);
1363 }
1364
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)1365 static void iwl_mvm_decode_he_phy_data(struct iwl_mvm *mvm,
1366 struct iwl_mvm_rx_phy_data *phy_data,
1367 struct ieee80211_radiotap_he *he,
1368 struct ieee80211_radiotap_he_mu *he_mu,
1369 struct ieee80211_rx_status *rx_status,
1370 int queue)
1371 {
1372 switch (phy_data->info_type) {
1373 case IWL_RX_PHY_INFO_TYPE_NONE:
1374 case IWL_RX_PHY_INFO_TYPE_CCK:
1375 case IWL_RX_PHY_INFO_TYPE_OFDM_LGCY:
1376 case IWL_RX_PHY_INFO_TYPE_HT:
1377 case IWL_RX_PHY_INFO_TYPE_VHT_SU:
1378 case IWL_RX_PHY_INFO_TYPE_VHT_MU:
1379 case IWL_RX_PHY_INFO_TYPE_EHT_MU:
1380 case IWL_RX_PHY_INFO_TYPE_EHT_TB:
1381 case IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT:
1382 case IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT:
1383 return;
1384 case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1385 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN |
1386 IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE2_KNOWN |
1387 IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE3_KNOWN |
1388 IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE4_KNOWN);
1389 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1390 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE1),
1391 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE1);
1392 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1393 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE2),
1394 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE2);
1395 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1396 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE3),
1397 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE3);
1398 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1399 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE4),
1400 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE4);
1401 fallthrough;
1402 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1403 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1404 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1405 case IWL_RX_PHY_INFO_TYPE_HE_TB:
1406 /* HE common */
1407 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_LDPC_XSYMSEG_KNOWN |
1408 IEEE80211_RADIOTAP_HE_DATA1_DOPPLER_KNOWN |
1409 IEEE80211_RADIOTAP_HE_DATA1_BSS_COLOR_KNOWN);
1410 he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRE_FEC_PAD_KNOWN |
1411 IEEE80211_RADIOTAP_HE_DATA2_PE_DISAMBIG_KNOWN |
1412 IEEE80211_RADIOTAP_HE_DATA2_TXOP_KNOWN |
1413 IEEE80211_RADIOTAP_HE_DATA2_NUM_LTF_SYMS_KNOWN);
1414 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1415 IWL_RX_PHY_DATA0_HE_BSS_COLOR_MASK),
1416 IEEE80211_RADIOTAP_HE_DATA3_BSS_COLOR);
1417 if (phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB &&
1418 phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB_EXT) {
1419 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_UL_DL_KNOWN);
1420 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1421 IWL_RX_PHY_DATA0_HE_UPLINK),
1422 IEEE80211_RADIOTAP_HE_DATA3_UL_DL);
1423 }
1424 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1425 IWL_RX_PHY_DATA0_HE_LDPC_EXT_SYM),
1426 IEEE80211_RADIOTAP_HE_DATA3_LDPC_XSYMSEG);
1427 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1428 IWL_RX_PHY_DATA0_HE_PRE_FEC_PAD_MASK),
1429 IEEE80211_RADIOTAP_HE_DATA5_PRE_FEC_PAD);
1430 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1431 IWL_RX_PHY_DATA0_HE_PE_DISAMBIG),
1432 IEEE80211_RADIOTAP_HE_DATA5_PE_DISAMBIG);
1433 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d1,
1434 IWL_RX_PHY_DATA1_HE_LTF_NUM_MASK),
1435 IEEE80211_RADIOTAP_HE_DATA5_NUM_LTF_SYMS);
1436 he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1437 IWL_RX_PHY_DATA0_HE_TXOP_DUR_MASK),
1438 IEEE80211_RADIOTAP_HE_DATA6_TXOP);
1439 he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1440 IWL_RX_PHY_DATA0_HE_DOPPLER),
1441 IEEE80211_RADIOTAP_HE_DATA6_DOPPLER);
1442 break;
1443 }
1444
1445 switch (phy_data->info_type) {
1446 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1447 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1448 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1449 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN);
1450 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1451 IWL_RX_PHY_DATA0_HE_SPATIAL_REUSE_MASK),
1452 IEEE80211_RADIOTAP_HE_DATA4_SU_MU_SPTL_REUSE);
1453 break;
1454 default:
1455 /* nothing here */
1456 break;
1457 }
1458
1459 switch (phy_data->info_type) {
1460 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1461 he_mu->flags1 |=
1462 le16_encode_bits(le16_get_bits(phy_data->d4,
1463 IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_DCM),
1464 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM);
1465 he_mu->flags1 |=
1466 le16_encode_bits(le16_get_bits(phy_data->d4,
1467 IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_MCS_MASK),
1468 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS);
1469 he_mu->flags2 |=
1470 le16_encode_bits(le16_get_bits(phy_data->d4,
1471 IWL_RX_PHY_DATA4_HE_MU_EXT_PREAMBLE_PUNC_TYPE_MASK),
1472 IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW);
1473 iwl_mvm_decode_he_mu_ext(mvm, phy_data, he_mu);
1474 fallthrough;
1475 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1476 he_mu->flags2 |=
1477 le16_encode_bits(le32_get_bits(phy_data->d1,
1478 IWL_RX_PHY_DATA1_HE_MU_SIBG_SYM_OR_USER_NUM_MASK),
1479 IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_SYMS_USERS);
1480 he_mu->flags2 |=
1481 le16_encode_bits(le32_get_bits(phy_data->d1,
1482 IWL_RX_PHY_DATA1_HE_MU_SIGB_COMPRESSION),
1483 IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_COMP);
1484 fallthrough;
1485 case IWL_RX_PHY_INFO_TYPE_HE_TB:
1486 case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1487 iwl_mvm_decode_he_phy_ru_alloc(phy_data, he, he_mu, rx_status);
1488 break;
1489 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1490 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BEAM_CHANGE_KNOWN);
1491 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1492 IWL_RX_PHY_DATA0_HE_BEAM_CHNG),
1493 IEEE80211_RADIOTAP_HE_DATA3_BEAM_CHANGE);
1494 break;
1495 default:
1496 /* nothing */
1497 break;
1498 }
1499 }
1500
1501 #define LE32_DEC_ENC(value, dec_bits, enc_bits) \
1502 le32_encode_bits(le32_get_bits(value, dec_bits), enc_bits)
1503
1504 #define IWL_MVM_ENC_USIG_VALUE_MASK(usig, in_value, dec_bits, enc_bits) do { \
1505 typeof(enc_bits) _enc_bits = enc_bits; \
1506 typeof(usig) _usig = usig; \
1507 (_usig)->mask |= cpu_to_le32(_enc_bits); \
1508 (_usig)->value |= LE32_DEC_ENC(in_value, dec_bits, _enc_bits); \
1509 } while (0)
1510
1511 #define __IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru) \
1512 eht->data[(rt_data)] |= \
1513 (cpu_to_le32 \
1514 (IEEE80211_RADIOTAP_EHT_DATA ## rt_data ## _RU_ALLOC_CC_ ## rt_ru ## _KNOWN) | \
1515 LE32_DEC_ENC(data ## fw_data, \
1516 IWL_RX_PHY_DATA ## fw_data ## _EHT_MU_EXT_RU_ALLOC_ ## fw_ru, \
1517 IEEE80211_RADIOTAP_EHT_DATA ## rt_data ## _RU_ALLOC_CC_ ## rt_ru))
1518
1519 #define _IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru) \
1520 __IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru)
1521
1522 #define IEEE80211_RADIOTAP_RU_DATA_1_1_1 1
1523 #define IEEE80211_RADIOTAP_RU_DATA_2_1_1 2
1524 #define IEEE80211_RADIOTAP_RU_DATA_1_1_2 2
1525 #define IEEE80211_RADIOTAP_RU_DATA_2_1_2 2
1526 #define IEEE80211_RADIOTAP_RU_DATA_1_2_1 3
1527 #define IEEE80211_RADIOTAP_RU_DATA_2_2_1 3
1528 #define IEEE80211_RADIOTAP_RU_DATA_1_2_2 3
1529 #define IEEE80211_RADIOTAP_RU_DATA_2_2_2 4
1530
1531 #define IWL_RX_RU_DATA_A1 2
1532 #define IWL_RX_RU_DATA_A2 2
1533 #define IWL_RX_RU_DATA_B1 2
1534 #define IWL_RX_RU_DATA_B2 3
1535 #define IWL_RX_RU_DATA_C1 3
1536 #define IWL_RX_RU_DATA_C2 3
1537 #define IWL_RX_RU_DATA_D1 4
1538 #define IWL_RX_RU_DATA_D2 4
1539
1540 #define IWL_MVM_ENC_EHT_RU(rt_ru, fw_ru) \
1541 _IWL_MVM_ENC_EHT_RU(IEEE80211_RADIOTAP_RU_DATA_ ## rt_ru, \
1542 rt_ru, \
1543 IWL_RX_RU_DATA_ ## fw_ru, \
1544 fw_ru)
1545
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)1546 static void iwl_mvm_decode_eht_ext_mu(struct iwl_mvm *mvm,
1547 struct iwl_mvm_rx_phy_data *phy_data,
1548 struct ieee80211_rx_status *rx_status,
1549 struct ieee80211_radiotap_eht *eht,
1550 struct ieee80211_radiotap_eht_usig *usig)
1551 {
1552 if (phy_data->with_data) {
1553 __le32 data1 = phy_data->d1;
1554 __le32 data2 = phy_data->d2;
1555 __le32 data3 = phy_data->d3;
1556 __le32 data4 = phy_data->eht_d4;
1557 __le32 data5 = phy_data->d5;
1558 u32 phy_bw = phy_data->rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK;
1559
1560 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1561 IWL_RX_PHY_DATA5_EHT_TYPE_AND_COMP,
1562 IEEE80211_RADIOTAP_EHT_USIG2_MU_B0_B1_PPDU_TYPE);
1563 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1564 IWL_RX_PHY_DATA5_EHT_MU_PUNC_CH_CODE,
1565 IEEE80211_RADIOTAP_EHT_USIG2_MU_B3_B7_PUNCTURED_INFO);
1566 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data4,
1567 IWL_RX_PHY_DATA4_EHT_MU_EXT_SIGB_MCS,
1568 IEEE80211_RADIOTAP_EHT_USIG2_MU_B9_B10_SIG_MCS);
1569 IWL_MVM_ENC_USIG_VALUE_MASK
1570 (usig, data1, IWL_RX_PHY_DATA1_EHT_MU_NUM_SIG_SYM_USIGA2,
1571 IEEE80211_RADIOTAP_EHT_USIG2_MU_B11_B15_EHT_SIG_SYMBOLS);
1572
1573 eht->user_info[0] |=
1574 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_STA_ID_KNOWN) |
1575 LE32_DEC_ENC(data5, IWL_RX_PHY_DATA5_EHT_MU_STA_ID_USR,
1576 IEEE80211_RADIOTAP_EHT_USER_INFO_STA_ID);
1577
1578 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_NR_NON_OFDMA_USERS_M);
1579 eht->data[7] |= LE32_DEC_ENC
1580 (data5, IWL_RX_PHY_DATA5_EHT_MU_NUM_USR_NON_OFDMA,
1581 IEEE80211_RADIOTAP_EHT_DATA7_NUM_OF_NON_OFDMA_USERS);
1582
1583 /*
1584 * Hardware labels the content channels/RU allocation values
1585 * as follows:
1586 * Content Channel 1 Content Channel 2
1587 * 20 MHz: A1
1588 * 40 MHz: A1 B1
1589 * 80 MHz: A1 C1 B1 D1
1590 * 160 MHz: A1 C1 A2 C2 B1 D1 B2 D2
1591 * 320 MHz: A1 C1 A2 C2 A3 C3 A4 C4 B1 D1 B2 D2 B3 D3 B4 D4
1592 *
1593 * However firmware can only give us A1-D2, so the higher
1594 * frequencies are missing.
1595 */
1596
1597 switch (phy_bw) {
1598 case RATE_MCS_CHAN_WIDTH_320:
1599 /* additional values are missing in RX metadata */
1600 case RATE_MCS_CHAN_WIDTH_160:
1601 /* content channel 1 */
1602 IWL_MVM_ENC_EHT_RU(1_2_1, A2);
1603 IWL_MVM_ENC_EHT_RU(1_2_2, C2);
1604 /* content channel 2 */
1605 IWL_MVM_ENC_EHT_RU(2_2_1, B2);
1606 IWL_MVM_ENC_EHT_RU(2_2_2, D2);
1607 fallthrough;
1608 case RATE_MCS_CHAN_WIDTH_80:
1609 /* content channel 1 */
1610 IWL_MVM_ENC_EHT_RU(1_1_2, C1);
1611 /* content channel 2 */
1612 IWL_MVM_ENC_EHT_RU(2_1_2, D1);
1613 fallthrough;
1614 case RATE_MCS_CHAN_WIDTH_40:
1615 /* content channel 2 */
1616 IWL_MVM_ENC_EHT_RU(2_1_1, B1);
1617 fallthrough;
1618 case RATE_MCS_CHAN_WIDTH_20:
1619 IWL_MVM_ENC_EHT_RU(1_1_1, A1);
1620 break;
1621 }
1622 } else {
1623 __le32 usig_a1 = phy_data->rx_vec[0];
1624 __le32 usig_a2 = phy_data->rx_vec[1];
1625
1626 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
1627 IWL_RX_USIG_A1_DISREGARD,
1628 IEEE80211_RADIOTAP_EHT_USIG1_MU_B20_B24_DISREGARD);
1629 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
1630 IWL_RX_USIG_A1_VALIDATE,
1631 IEEE80211_RADIOTAP_EHT_USIG1_MU_B25_VALIDATE);
1632 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1633 IWL_RX_USIG_A2_EHT_PPDU_TYPE,
1634 IEEE80211_RADIOTAP_EHT_USIG2_MU_B0_B1_PPDU_TYPE);
1635 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1636 IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B2,
1637 IEEE80211_RADIOTAP_EHT_USIG2_MU_B2_VALIDATE);
1638 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1639 IWL_RX_USIG_A2_EHT_PUNC_CHANNEL,
1640 IEEE80211_RADIOTAP_EHT_USIG2_MU_B3_B7_PUNCTURED_INFO);
1641 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1642 IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B8,
1643 IEEE80211_RADIOTAP_EHT_USIG2_MU_B8_VALIDATE);
1644 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1645 IWL_RX_USIG_A2_EHT_SIG_MCS,
1646 IEEE80211_RADIOTAP_EHT_USIG2_MU_B9_B10_SIG_MCS);
1647 IWL_MVM_ENC_USIG_VALUE_MASK
1648 (usig, usig_a2, IWL_RX_USIG_A2_EHT_SIG_SYM_NUM,
1649 IEEE80211_RADIOTAP_EHT_USIG2_MU_B11_B15_EHT_SIG_SYMBOLS);
1650 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1651 IWL_RX_USIG_A2_EHT_CRC_OK,
1652 IEEE80211_RADIOTAP_EHT_USIG2_MU_B16_B19_CRC);
1653 }
1654 }
1655
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)1656 static void iwl_mvm_decode_eht_ext_tb(struct iwl_mvm *mvm,
1657 struct iwl_mvm_rx_phy_data *phy_data,
1658 struct ieee80211_rx_status *rx_status,
1659 struct ieee80211_radiotap_eht *eht,
1660 struct ieee80211_radiotap_eht_usig *usig)
1661 {
1662 if (phy_data->with_data) {
1663 __le32 data5 = phy_data->d5;
1664
1665 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1666 IWL_RX_PHY_DATA5_EHT_TYPE_AND_COMP,
1667 IEEE80211_RADIOTAP_EHT_USIG2_TB_B0_B1_PPDU_TYPE);
1668 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1669 IWL_RX_PHY_DATA5_EHT_TB_SPATIAL_REUSE1,
1670 IEEE80211_RADIOTAP_EHT_USIG2_TB_B3_B6_SPATIAL_REUSE_1);
1671
1672 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1673 IWL_RX_PHY_DATA5_EHT_TB_SPATIAL_REUSE2,
1674 IEEE80211_RADIOTAP_EHT_USIG2_TB_B7_B10_SPATIAL_REUSE_2);
1675 } else {
1676 __le32 usig_a1 = phy_data->rx_vec[0];
1677 __le32 usig_a2 = phy_data->rx_vec[1];
1678
1679 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
1680 IWL_RX_USIG_A1_DISREGARD,
1681 IEEE80211_RADIOTAP_EHT_USIG1_TB_B20_B25_DISREGARD);
1682 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1683 IWL_RX_USIG_A2_EHT_PPDU_TYPE,
1684 IEEE80211_RADIOTAP_EHT_USIG2_TB_B0_B1_PPDU_TYPE);
1685 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1686 IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B2,
1687 IEEE80211_RADIOTAP_EHT_USIG2_TB_B2_VALIDATE);
1688 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1689 IWL_RX_USIG_A2_EHT_TRIG_SPATIAL_REUSE_1,
1690 IEEE80211_RADIOTAP_EHT_USIG2_TB_B3_B6_SPATIAL_REUSE_1);
1691 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1692 IWL_RX_USIG_A2_EHT_TRIG_SPATIAL_REUSE_2,
1693 IEEE80211_RADIOTAP_EHT_USIG2_TB_B7_B10_SPATIAL_REUSE_2);
1694 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1695 IWL_RX_USIG_A2_EHT_TRIG_USIG2_DISREGARD,
1696 IEEE80211_RADIOTAP_EHT_USIG2_TB_B11_B15_DISREGARD);
1697 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1698 IWL_RX_USIG_A2_EHT_CRC_OK,
1699 IEEE80211_RADIOTAP_EHT_USIG2_TB_B16_B19_CRC);
1700 }
1701 }
1702
iwl_mvm_decode_eht_ru(struct iwl_mvm * mvm,struct ieee80211_rx_status * rx_status,struct ieee80211_radiotap_eht * eht)1703 static void iwl_mvm_decode_eht_ru(struct iwl_mvm *mvm,
1704 struct ieee80211_rx_status *rx_status,
1705 struct ieee80211_radiotap_eht *eht)
1706 {
1707 u32 ru = le32_get_bits(eht->data[8],
1708 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B7_B1);
1709 enum nl80211_eht_ru_alloc nl_ru;
1710
1711 /* Using D1.5 Table 9-53a - Encoding of PS160 and RU Allocation subfields
1712 * in an EHT variant User Info field
1713 */
1714
1715 switch (ru) {
1716 case 0 ... 36:
1717 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_26;
1718 break;
1719 case 37 ... 52:
1720 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_52;
1721 break;
1722 case 53 ... 60:
1723 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_106;
1724 break;
1725 case 61 ... 64:
1726 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_242;
1727 break;
1728 case 65 ... 66:
1729 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_484;
1730 break;
1731 case 67:
1732 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996;
1733 break;
1734 case 68:
1735 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_2x996;
1736 break;
1737 case 69:
1738 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_4x996;
1739 break;
1740 case 70 ... 81:
1741 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_52P26;
1742 break;
1743 case 82 ... 89:
1744 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_106P26;
1745 break;
1746 case 90 ... 93:
1747 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_484P242;
1748 break;
1749 case 94 ... 95:
1750 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996P484;
1751 break;
1752 case 96 ... 99:
1753 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996P484P242;
1754 break;
1755 case 100 ... 103:
1756 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_2x996P484;
1757 break;
1758 case 104:
1759 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_3x996;
1760 break;
1761 case 105 ... 106:
1762 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_3x996P484;
1763 break;
1764 default:
1765 return;
1766 }
1767
1768 rx_status->bw = RATE_INFO_BW_EHT_RU;
1769 rx_status->eht.ru = nl_ru;
1770 }
1771
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)1772 static void iwl_mvm_decode_eht_phy_data(struct iwl_mvm *mvm,
1773 struct iwl_mvm_rx_phy_data *phy_data,
1774 struct ieee80211_rx_status *rx_status,
1775 struct ieee80211_radiotap_eht *eht,
1776 struct ieee80211_radiotap_eht_usig *usig)
1777
1778 {
1779 __le32 data0 = phy_data->d0;
1780 __le32 data1 = phy_data->d1;
1781 __le32 usig_a1 = phy_data->rx_vec[0];
1782 u8 info_type = phy_data->info_type;
1783
1784 /* Not in EHT range */
1785 if (info_type < IWL_RX_PHY_INFO_TYPE_EHT_MU ||
1786 info_type > IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT)
1787 return;
1788
1789 usig->common |= cpu_to_le32
1790 (IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL_KNOWN |
1791 IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR_KNOWN);
1792 if (phy_data->with_data) {
1793 usig->common |= LE32_DEC_ENC(data0,
1794 IWL_RX_PHY_DATA0_EHT_UPLINK,
1795 IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL);
1796 usig->common |= LE32_DEC_ENC(data0,
1797 IWL_RX_PHY_DATA0_EHT_BSS_COLOR_MASK,
1798 IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR);
1799 } else {
1800 usig->common |= LE32_DEC_ENC(usig_a1,
1801 IWL_RX_USIG_A1_UL_FLAG,
1802 IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL);
1803 usig->common |= LE32_DEC_ENC(usig_a1,
1804 IWL_RX_USIG_A1_BSS_COLOR,
1805 IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR);
1806 }
1807
1808 if (fw_has_capa(&mvm->fw->ucode_capa,
1809 IWL_UCODE_TLV_CAPA_SNIFF_VALIDATE_SUPPORT)) {
1810 usig->common |=
1811 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_VALIDATE_BITS_CHECKED);
1812 usig->common |=
1813 LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_VALIDATE,
1814 IEEE80211_RADIOTAP_EHT_USIG_COMMON_VALIDATE_BITS_OK);
1815 }
1816
1817 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_SPATIAL_REUSE);
1818 eht->data[0] |= LE32_DEC_ENC(data0,
1819 IWL_RX_PHY_DATA0_ETH_SPATIAL_REUSE_MASK,
1820 IEEE80211_RADIOTAP_EHT_DATA0_SPATIAL_REUSE);
1821
1822 /* All RU allocating size/index is in TB format */
1823 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_RU_ALLOC_TB_FMT);
1824 eht->data[8] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PS160,
1825 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_PS_160);
1826 eht->data[8] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_RU_ALLOC_B0,
1827 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B0);
1828 eht->data[8] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_RU_ALLOC_B1_B7,
1829 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B7_B1);
1830
1831 iwl_mvm_decode_eht_ru(mvm, rx_status, eht);
1832
1833 /* We only get here in case of IWL_RX_MPDU_PHY_TSF_OVERLOAD is set
1834 * which is on only in case of monitor mode so no need to check monitor
1835 * mode
1836 */
1837 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PRIMARY_80);
1838 eht->data[1] |=
1839 le32_encode_bits(mvm->monitor_p80,
1840 IEEE80211_RADIOTAP_EHT_DATA1_PRIMARY_80);
1841
1842 usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP_KNOWN);
1843 if (phy_data->with_data)
1844 usig->common |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_TXOP_DUR_MASK,
1845 IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP);
1846 else
1847 usig->common |= LE32_DEC_ENC(usig_a1, IWL_RX_USIG_A1_TXOP_DURATION,
1848 IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP);
1849
1850 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_LDPC_EXTRA_SYM_OM);
1851 eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_LDPC_EXT_SYM,
1852 IEEE80211_RADIOTAP_EHT_DATA0_LDPC_EXTRA_SYM_OM);
1853
1854 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PRE_PADD_FACOR_OM);
1855 eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PRE_FEC_PAD_MASK,
1856 IEEE80211_RADIOTAP_EHT_DATA0_PRE_PADD_FACOR_OM);
1857
1858 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PE_DISAMBIGUITY_OM);
1859 eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PE_DISAMBIG,
1860 IEEE80211_RADIOTAP_EHT_DATA0_PE_DISAMBIGUITY_OM);
1861
1862 /* TODO: what about IWL_RX_PHY_DATA0_EHT_BW320_SLOT */
1863
1864 if (!le32_get_bits(data0, IWL_RX_PHY_DATA0_EHT_SIGA_CRC_OK))
1865 usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BAD_USIG_CRC);
1866
1867 usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_PHY_VER_KNOWN);
1868 usig->common |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PHY_VER,
1869 IEEE80211_RADIOTAP_EHT_USIG_COMMON_PHY_VER);
1870
1871 /*
1872 * TODO: what about TB - IWL_RX_PHY_DATA1_EHT_TB_PILOT_TYPE,
1873 * IWL_RX_PHY_DATA1_EHT_TB_LOW_SS
1874 */
1875
1876 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_EHT_LTF);
1877 eht->data[0] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_SIG_LTF_NUM,
1878 IEEE80211_RADIOTAP_EHT_DATA0_EHT_LTF);
1879
1880 if (info_type == IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT ||
1881 info_type == IWL_RX_PHY_INFO_TYPE_EHT_TB)
1882 iwl_mvm_decode_eht_ext_tb(mvm, phy_data, rx_status, eht, usig);
1883
1884 if (info_type == IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT ||
1885 info_type == IWL_RX_PHY_INFO_TYPE_EHT_MU)
1886 iwl_mvm_decode_eht_ext_mu(mvm, phy_data, rx_status, eht, usig);
1887 }
1888
iwl_mvm_rx_eht(struct iwl_mvm * mvm,struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data,int queue)1889 static void iwl_mvm_rx_eht(struct iwl_mvm *mvm, struct sk_buff *skb,
1890 struct iwl_mvm_rx_phy_data *phy_data,
1891 int queue)
1892 {
1893 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1894
1895 struct ieee80211_radiotap_eht *eht;
1896 struct ieee80211_radiotap_eht_usig *usig;
1897 size_t eht_len = sizeof(*eht);
1898
1899 u32 rate_n_flags = phy_data->rate_n_flags;
1900 u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1901 /* EHT and HE have the same valus for LTF */
1902 u8 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN;
1903 u16 phy_info = phy_data->phy_info;
1904 u32 bw;
1905
1906 /* u32 for 1 user_info */
1907 if (phy_data->with_data)
1908 eht_len += sizeof(u32);
1909
1910 eht = iwl_mvm_radiotap_put_tlv(skb, IEEE80211_RADIOTAP_EHT, eht_len);
1911
1912 usig = iwl_mvm_radiotap_put_tlv(skb, IEEE80211_RADIOTAP_EHT_USIG,
1913 sizeof(*usig));
1914 rx_status->flag |= RX_FLAG_RADIOTAP_TLV_AT_END;
1915 usig->common |=
1916 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BW_KNOWN);
1917
1918 /* specific handling for 320MHz */
1919 bw = FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK, rate_n_flags);
1920 if (bw == RATE_MCS_CHAN_WIDTH_320_VAL)
1921 bw += FIELD_GET(IWL_RX_PHY_DATA0_EHT_BW320_SLOT,
1922 le32_to_cpu(phy_data->d0));
1923
1924 usig->common |= cpu_to_le32
1925 (FIELD_PREP(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BW, bw));
1926
1927 /* report the AMPDU-EOF bit on single frames */
1928 if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1929 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
1930 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1931 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
1932 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1933 }
1934
1935 /* update aggregation data for monitor sake on default queue */
1936 if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) &&
1937 (phy_info & IWL_RX_MPDU_PHY_AMPDU) && phy_data->first_subframe) {
1938 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1939 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
1940 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1941 }
1942
1943 if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1944 iwl_mvm_decode_eht_phy_data(mvm, phy_data, rx_status, eht, usig);
1945
1946 #define CHECK_TYPE(F) \
1947 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F != \
1948 (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS))
1949
1950 CHECK_TYPE(SU);
1951 CHECK_TYPE(EXT_SU);
1952 CHECK_TYPE(MU);
1953 CHECK_TYPE(TRIG);
1954
1955 switch (FIELD_GET(RATE_MCS_HE_GI_LTF_MSK, rate_n_flags)) {
1956 case 0:
1957 if (he_type == RATE_MCS_HE_TYPE_TRIG) {
1958 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_1_6;
1959 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
1960 } else {
1961 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_0_8;
1962 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1963 }
1964 break;
1965 case 1:
1966 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_1_6;
1967 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1968 break;
1969 case 2:
1970 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1971 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1972 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_3_2;
1973 else
1974 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_0_8;
1975 break;
1976 case 3:
1977 if (he_type != RATE_MCS_HE_TYPE_TRIG) {
1978 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1979 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_3_2;
1980 }
1981 break;
1982 default:
1983 /* nothing here */
1984 break;
1985 }
1986
1987 if (ltf != IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN) {
1988 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_GI);
1989 eht->data[0] |= cpu_to_le32
1990 (FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_LTF,
1991 ltf) |
1992 FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_GI,
1993 rx_status->eht.gi));
1994 }
1995
1996
1997 if (!phy_data->with_data) {
1998 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_NSS_S |
1999 IEEE80211_RADIOTAP_EHT_KNOWN_BEAMFORMED_S);
2000 eht->data[7] |=
2001 le32_encode_bits(le32_get_bits(phy_data->rx_vec[2],
2002 RX_NO_DATA_RX_VEC2_EHT_NSTS_MSK),
2003 IEEE80211_RADIOTAP_EHT_DATA7_NSS_S);
2004 if (rate_n_flags & RATE_MCS_BF_MSK)
2005 eht->data[7] |=
2006 cpu_to_le32(IEEE80211_RADIOTAP_EHT_DATA7_BEAMFORMED_S);
2007 } else {
2008 eht->user_info[0] |=
2009 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_MCS_KNOWN |
2010 IEEE80211_RADIOTAP_EHT_USER_INFO_CODING_KNOWN |
2011 IEEE80211_RADIOTAP_EHT_USER_INFO_NSS_KNOWN_O |
2012 IEEE80211_RADIOTAP_EHT_USER_INFO_BEAMFORMING_KNOWN_O |
2013 IEEE80211_RADIOTAP_EHT_USER_INFO_DATA_FOR_USER);
2014
2015 if (rate_n_flags & RATE_MCS_BF_MSK)
2016 eht->user_info[0] |=
2017 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_BEAMFORMING_O);
2018
2019 if (rate_n_flags & RATE_MCS_LDPC_MSK)
2020 eht->user_info[0] |=
2021 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_CODING);
2022
2023 eht->user_info[0] |= cpu_to_le32
2024 (FIELD_PREP(IEEE80211_RADIOTAP_EHT_USER_INFO_MCS,
2025 FIELD_GET(RATE_VHT_MCS_RATE_CODE_MSK,
2026 rate_n_flags)) |
2027 FIELD_PREP(IEEE80211_RADIOTAP_EHT_USER_INFO_NSS_O,
2028 FIELD_GET(RATE_MCS_NSS_MSK, rate_n_flags)));
2029 }
2030 }
2031
iwl_mvm_rx_he(struct iwl_mvm * mvm,struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data,int queue)2032 static void iwl_mvm_rx_he(struct iwl_mvm *mvm, struct sk_buff *skb,
2033 struct iwl_mvm_rx_phy_data *phy_data,
2034 int queue)
2035 {
2036 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
2037 struct ieee80211_radiotap_he *he = NULL;
2038 struct ieee80211_radiotap_he_mu *he_mu = NULL;
2039 u32 rate_n_flags = phy_data->rate_n_flags;
2040 u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
2041 u8 ltf;
2042 static const struct ieee80211_radiotap_he known = {
2043 .data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN |
2044 IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN |
2045 IEEE80211_RADIOTAP_HE_DATA1_STBC_KNOWN |
2046 IEEE80211_RADIOTAP_HE_DATA1_CODING_KNOWN),
2047 .data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN |
2048 IEEE80211_RADIOTAP_HE_DATA2_TXBF_KNOWN),
2049 };
2050 static const struct ieee80211_radiotap_he_mu mu_known = {
2051 .flags1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS_KNOWN |
2052 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM_KNOWN |
2053 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN |
2054 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_COMP_KNOWN),
2055 .flags2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW_KNOWN |
2056 IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN),
2057 };
2058 u16 phy_info = phy_data->phy_info;
2059
2060 he = skb_put_data(skb, &known, sizeof(known));
2061 rx_status->flag |= RX_FLAG_RADIOTAP_HE;
2062
2063 if (phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU ||
2064 phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU_EXT) {
2065 he_mu = skb_put_data(skb, &mu_known, sizeof(mu_known));
2066 rx_status->flag |= RX_FLAG_RADIOTAP_HE_MU;
2067 }
2068
2069 /* report the AMPDU-EOF bit on single frames */
2070 if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
2071 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
2072 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
2073 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF))
2074 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
2075 }
2076
2077 if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
2078 iwl_mvm_decode_he_phy_data(mvm, phy_data, he, he_mu, rx_status,
2079 queue);
2080
2081 /* update aggregation data for monitor sake on default queue */
2082 if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) &&
2083 (phy_info & IWL_RX_MPDU_PHY_AMPDU) && phy_data->first_subframe) {
2084 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
2085 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
2086 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
2087 }
2088
2089 if (he_type == RATE_MCS_HE_TYPE_EXT_SU &&
2090 rate_n_flags & RATE_MCS_HE_106T_MSK) {
2091 rx_status->bw = RATE_INFO_BW_HE_RU;
2092 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
2093 }
2094
2095 /* actually data is filled in mac80211 */
2096 if (he_type == RATE_MCS_HE_TYPE_SU ||
2097 he_type == RATE_MCS_HE_TYPE_EXT_SU)
2098 he->data1 |=
2099 cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
2100
2101 #define CHECK_TYPE(F) \
2102 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F != \
2103 (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS))
2104
2105 CHECK_TYPE(SU);
2106 CHECK_TYPE(EXT_SU);
2107 CHECK_TYPE(MU);
2108 CHECK_TYPE(TRIG);
2109
2110 he->data1 |= cpu_to_le16(he_type >> RATE_MCS_HE_TYPE_POS);
2111
2112 if (rate_n_flags & RATE_MCS_BF_MSK)
2113 he->data5 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA5_TXBF);
2114
2115 switch ((rate_n_flags & RATE_MCS_HE_GI_LTF_MSK) >>
2116 RATE_MCS_HE_GI_LTF_POS) {
2117 case 0:
2118 if (he_type == RATE_MCS_HE_TYPE_TRIG)
2119 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
2120 else
2121 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
2122 if (he_type == RATE_MCS_HE_TYPE_MU)
2123 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
2124 else
2125 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
2126 break;
2127 case 1:
2128 if (he_type == RATE_MCS_HE_TYPE_TRIG)
2129 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
2130 else
2131 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
2132 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
2133 break;
2134 case 2:
2135 if (he_type == RATE_MCS_HE_TYPE_TRIG) {
2136 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
2137 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
2138 } else {
2139 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
2140 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
2141 }
2142 break;
2143 case 3:
2144 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
2145 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
2146 break;
2147 case 4:
2148 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
2149 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
2150 break;
2151 default:
2152 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN;
2153 }
2154
2155 he->data5 |= le16_encode_bits(ltf,
2156 IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE);
2157 }
2158
iwl_mvm_decode_lsig(struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data)2159 static void iwl_mvm_decode_lsig(struct sk_buff *skb,
2160 struct iwl_mvm_rx_phy_data *phy_data)
2161 {
2162 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
2163 struct ieee80211_radiotap_lsig *lsig;
2164
2165 switch (phy_data->info_type) {
2166 case IWL_RX_PHY_INFO_TYPE_HT:
2167 case IWL_RX_PHY_INFO_TYPE_VHT_SU:
2168 case IWL_RX_PHY_INFO_TYPE_VHT_MU:
2169 case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
2170 case IWL_RX_PHY_INFO_TYPE_HE_SU:
2171 case IWL_RX_PHY_INFO_TYPE_HE_MU:
2172 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
2173 case IWL_RX_PHY_INFO_TYPE_HE_TB:
2174 case IWL_RX_PHY_INFO_TYPE_EHT_MU:
2175 case IWL_RX_PHY_INFO_TYPE_EHT_TB:
2176 case IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT:
2177 case IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT:
2178 lsig = skb_put(skb, sizeof(*lsig));
2179 lsig->data1 = cpu_to_le16(IEEE80211_RADIOTAP_LSIG_DATA1_LENGTH_KNOWN);
2180 lsig->data2 = le16_encode_bits(le32_get_bits(phy_data->d1,
2181 IWL_RX_PHY_DATA1_LSIG_LEN_MASK),
2182 IEEE80211_RADIOTAP_LSIG_DATA2_LENGTH);
2183 rx_status->flag |= RX_FLAG_RADIOTAP_LSIG;
2184 break;
2185 default:
2186 break;
2187 }
2188 }
2189
iwl_mvm_nl80211_band_from_rx_msdu(u8 phy_band)2190 static inline u8 iwl_mvm_nl80211_band_from_rx_msdu(u8 phy_band)
2191 {
2192 switch (phy_band) {
2193 case PHY_BAND_24:
2194 return NL80211_BAND_2GHZ;
2195 case PHY_BAND_5:
2196 return NL80211_BAND_5GHZ;
2197 case PHY_BAND_6:
2198 return NL80211_BAND_6GHZ;
2199 default:
2200 WARN_ONCE(1, "Unsupported phy band (%u)\n", phy_band);
2201 return NL80211_BAND_5GHZ;
2202 }
2203 }
2204
2205 struct iwl_rx_sta_csa {
2206 bool all_sta_unblocked;
2207 struct ieee80211_vif *vif;
2208 };
2209
iwl_mvm_rx_get_sta_block_tx(void * data,struct ieee80211_sta * sta)2210 static void iwl_mvm_rx_get_sta_block_tx(void *data, struct ieee80211_sta *sta)
2211 {
2212 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2213 struct iwl_rx_sta_csa *rx_sta_csa = data;
2214
2215 if (mvmsta->vif != rx_sta_csa->vif)
2216 return;
2217
2218 if (mvmsta->disable_tx)
2219 rx_sta_csa->all_sta_unblocked = false;
2220 }
2221
2222 /*
2223 * Note: requires also rx_status->band to be prefilled, as well
2224 * as phy_data (apart from phy_data->info_type)
2225 */
iwl_mvm_rx_fill_status(struct iwl_mvm * mvm,struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data,int queue)2226 static void iwl_mvm_rx_fill_status(struct iwl_mvm *mvm,
2227 struct sk_buff *skb,
2228 struct iwl_mvm_rx_phy_data *phy_data,
2229 int queue)
2230 {
2231 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
2232 u32 rate_n_flags = phy_data->rate_n_flags;
2233 u8 stbc = u32_get_bits(rate_n_flags, RATE_MCS_STBC_MSK);
2234 u32 format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
2235 bool is_sgi;
2236
2237 phy_data->info_type = IWL_RX_PHY_INFO_TYPE_NONE;
2238
2239 if (phy_data->phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
2240 phy_data->info_type =
2241 le32_get_bits(phy_data->d1,
2242 IWL_RX_PHY_DATA1_INFO_TYPE_MASK);
2243
2244 /* This may be overridden by iwl_mvm_rx_he() to HE_RU */
2245 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
2246 case RATE_MCS_CHAN_WIDTH_20:
2247 break;
2248 case RATE_MCS_CHAN_WIDTH_40:
2249 rx_status->bw = RATE_INFO_BW_40;
2250 break;
2251 case RATE_MCS_CHAN_WIDTH_80:
2252 rx_status->bw = RATE_INFO_BW_80;
2253 break;
2254 case RATE_MCS_CHAN_WIDTH_160:
2255 rx_status->bw = RATE_INFO_BW_160;
2256 break;
2257 case RATE_MCS_CHAN_WIDTH_320:
2258 rx_status->bw = RATE_INFO_BW_320;
2259 break;
2260 }
2261
2262 /* must be before L-SIG data */
2263 if (format == RATE_MCS_HE_MSK)
2264 iwl_mvm_rx_he(mvm, skb, phy_data, queue);
2265
2266 iwl_mvm_decode_lsig(skb, phy_data);
2267
2268 rx_status->device_timestamp = phy_data->gp2_on_air_rise;
2269 rx_status->freq = ieee80211_channel_to_frequency(phy_data->channel,
2270 rx_status->band);
2271 iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags,
2272 phy_data->energy_a, phy_data->energy_b);
2273
2274 /* using TLV format and must be after all fixed len fields */
2275 if (format == RATE_MCS_EHT_MSK)
2276 iwl_mvm_rx_eht(mvm, skb, phy_data, queue);
2277
2278 if (unlikely(mvm->monitor_on))
2279 iwl_mvm_add_rtap_sniffer_config(mvm, skb);
2280
2281 is_sgi = format == RATE_MCS_HE_MSK ?
2282 iwl_he_is_sgi(rate_n_flags) :
2283 rate_n_flags & RATE_MCS_SGI_MSK;
2284
2285 if (!(format == RATE_MCS_CCK_MSK) && is_sgi)
2286 rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
2287
2288 if (rate_n_flags & RATE_MCS_LDPC_MSK)
2289 rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
2290
2291 switch (format) {
2292 case RATE_MCS_VHT_MSK:
2293 rx_status->encoding = RX_ENC_VHT;
2294 break;
2295 case RATE_MCS_HE_MSK:
2296 rx_status->encoding = RX_ENC_HE;
2297 rx_status->he_dcm =
2298 !!(rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK);
2299 break;
2300 case RATE_MCS_EHT_MSK:
2301 rx_status->encoding = RX_ENC_EHT;
2302 break;
2303 }
2304
2305 switch (format) {
2306 case RATE_MCS_HT_MSK:
2307 rx_status->encoding = RX_ENC_HT;
2308 rx_status->rate_idx = RATE_HT_MCS_INDEX(rate_n_flags);
2309 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
2310 break;
2311 case RATE_MCS_VHT_MSK:
2312 case RATE_MCS_HE_MSK:
2313 case RATE_MCS_EHT_MSK:
2314 rx_status->nss =
2315 u32_get_bits(rate_n_flags, RATE_MCS_NSS_MSK) + 1;
2316 rx_status->rate_idx = rate_n_flags & RATE_MCS_CODE_MSK;
2317 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
2318 break;
2319 default: {
2320 int rate = iwl_mvm_legacy_hw_idx_to_mac80211_idx(rate_n_flags,
2321 rx_status->band);
2322
2323 rx_status->rate_idx = rate;
2324
2325 if ((rate < 0 || rate > 0xFF)) {
2326 rx_status->rate_idx = 0;
2327 if (net_ratelimit())
2328 IWL_ERR(mvm, "Invalid rate flags 0x%x, band %d,\n",
2329 rate_n_flags, rx_status->band);
2330 }
2331
2332 break;
2333 }
2334 }
2335 }
2336
iwl_mvm_rx_mpdu_mq(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2337 void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
2338 struct iwl_rx_cmd_buffer *rxb, int queue)
2339 {
2340 struct ieee80211_rx_status *rx_status;
2341 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2342 struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
2343 struct ieee80211_hdr *hdr;
2344 u32 len;
2345 u32 pkt_len = iwl_rx_packet_payload_len(pkt);
2346 struct ieee80211_sta *sta = NULL;
2347 struct ieee80211_link_sta *link_sta = NULL;
2348 struct sk_buff *skb;
2349 u8 crypt_len = 0;
2350 size_t desc_size;
2351 struct iwl_mvm_rx_phy_data phy_data = {};
2352 u32 format;
2353
2354 if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
2355 return;
2356
2357 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
2358 desc_size = sizeof(*desc);
2359 else
2360 desc_size = IWL_RX_DESC_SIZE_V1;
2361
2362 if (unlikely(pkt_len < desc_size)) {
2363 IWL_DEBUG_DROP(mvm, "Bad REPLY_RX_MPDU_CMD size\n");
2364 return;
2365 }
2366
2367 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
2368 phy_data.rate_n_flags = le32_to_cpu(desc->v3.rate_n_flags);
2369 phy_data.channel = desc->v3.channel;
2370 phy_data.gp2_on_air_rise = le32_to_cpu(desc->v3.gp2_on_air_rise);
2371 phy_data.energy_a = desc->v3.energy_a;
2372 phy_data.energy_b = desc->v3.energy_b;
2373
2374 phy_data.d0 = desc->v3.phy_data0;
2375 phy_data.d1 = desc->v3.phy_data1;
2376 phy_data.d2 = desc->v3.phy_data2;
2377 phy_data.d3 = desc->v3.phy_data3;
2378 phy_data.eht_d4 = desc->phy_eht_data4;
2379 phy_data.d5 = desc->v3.phy_data5;
2380 } else {
2381 phy_data.rate_n_flags = le32_to_cpu(desc->v1.rate_n_flags);
2382 phy_data.channel = desc->v1.channel;
2383 phy_data.gp2_on_air_rise = le32_to_cpu(desc->v1.gp2_on_air_rise);
2384 phy_data.energy_a = desc->v1.energy_a;
2385 phy_data.energy_b = desc->v1.energy_b;
2386
2387 phy_data.d0 = desc->v1.phy_data0;
2388 phy_data.d1 = desc->v1.phy_data1;
2389 phy_data.d2 = desc->v1.phy_data2;
2390 phy_data.d3 = desc->v1.phy_data3;
2391 }
2392
2393 if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
2394 REPLY_RX_MPDU_CMD, 0) < 4) {
2395 phy_data.rate_n_flags = iwl_new_rate_from_v1(phy_data.rate_n_flags);
2396 IWL_DEBUG_DROP(mvm, "Got old format rate, converting. New rate: 0x%x\n",
2397 phy_data.rate_n_flags);
2398 }
2399
2400 format = phy_data.rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
2401
2402 len = le16_to_cpu(desc->mpdu_len);
2403
2404 if (unlikely(len + desc_size > pkt_len)) {
2405 IWL_DEBUG_DROP(mvm, "FW lied about packet len\n");
2406 return;
2407 }
2408
2409 phy_data.with_data = true;
2410 phy_data.phy_info = le16_to_cpu(desc->phy_info);
2411 phy_data.d4 = desc->phy_data4;
2412
2413 hdr = (void *)(pkt->data + desc_size);
2414 /* Dont use dev_alloc_skb(), we'll have enough headroom once
2415 * ieee80211_hdr pulled.
2416 */
2417 skb = alloc_skb(128, GFP_ATOMIC);
2418 if (!skb) {
2419 IWL_ERR(mvm, "alloc_skb failed\n");
2420 return;
2421 }
2422
2423 if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
2424 /*
2425 * If the device inserted padding it means that (it thought)
2426 * the 802.11 header wasn't a multiple of 4 bytes long. In
2427 * this case, reserve two bytes at the start of the SKB to
2428 * align the payload properly in case we end up copying it.
2429 */
2430 skb_reserve(skb, 2);
2431 }
2432
2433 rx_status = IEEE80211_SKB_RXCB(skb);
2434
2435 /*
2436 * Keep packets with CRC errors (and with overrun) for monitor mode
2437 * (otherwise the firmware discards them) but mark them as bad.
2438 */
2439 if (!(desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_CRC_OK)) ||
2440 !(desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_OVERRUN_OK))) {
2441 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n",
2442 le32_to_cpu(desc->status));
2443 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
2444 }
2445
2446 /* set the preamble flag if appropriate */
2447 if (format == RATE_MCS_CCK_MSK &&
2448 phy_data.phy_info & IWL_RX_MPDU_PHY_SHORT_PREAMBLE)
2449 rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
2450
2451 if (likely(!(phy_data.phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD))) {
2452 u64 tsf_on_air_rise;
2453
2454 if (mvm->trans->trans_cfg->device_family >=
2455 IWL_DEVICE_FAMILY_AX210)
2456 tsf_on_air_rise = le64_to_cpu(desc->v3.tsf_on_air_rise);
2457 else
2458 tsf_on_air_rise = le64_to_cpu(desc->v1.tsf_on_air_rise);
2459
2460 rx_status->mactime = tsf_on_air_rise;
2461 /* TSF as indicated by the firmware is at INA time */
2462 rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;
2463 }
2464
2465 if (iwl_mvm_is_band_in_rx_supported(mvm)) {
2466 u8 band = BAND_IN_RX_STATUS(desc->mac_phy_idx);
2467
2468 rx_status->band = iwl_mvm_nl80211_band_from_rx_msdu(band);
2469 } else {
2470 rx_status->band = phy_data.channel > 14 ? NL80211_BAND_5GHZ :
2471 NL80211_BAND_2GHZ;
2472 }
2473
2474 /* update aggregation data for monitor sake on default queue */
2475 if (!queue && (phy_data.phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
2476 bool toggle_bit;
2477
2478 toggle_bit = phy_data.phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE;
2479 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
2480 /*
2481 * Toggle is switched whenever new aggregation starts. Make
2482 * sure ampdu_reference is never 0 so we can later use it to
2483 * see if the frame was really part of an A-MPDU or not.
2484 */
2485 if (toggle_bit != mvm->ampdu_toggle) {
2486 mvm->ampdu_ref++;
2487 if (mvm->ampdu_ref == 0)
2488 mvm->ampdu_ref++;
2489 mvm->ampdu_toggle = toggle_bit;
2490 phy_data.first_subframe = true;
2491 }
2492 rx_status->ampdu_reference = mvm->ampdu_ref;
2493 }
2494
2495 rcu_read_lock();
2496
2497 if (desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_SRC_STA_FOUND)) {
2498 u8 id = le32_get_bits(desc->status, IWL_RX_MPDU_STATUS_STA_ID);
2499
2500 if (!WARN_ON_ONCE(id >= mvm->fw->ucode_capa.num_stations)) {
2501 sta = rcu_dereference(mvm->fw_id_to_mac_id[id]);
2502 if (IS_ERR(sta))
2503 sta = NULL;
2504 link_sta = rcu_dereference(mvm->fw_id_to_link_sta[id]);
2505 }
2506 } else if (!is_multicast_ether_addr(hdr->addr2)) {
2507 /*
2508 * This is fine since we prevent two stations with the same
2509 * address from being added.
2510 */
2511 sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
2512 }
2513
2514 if (iwl_mvm_rx_crypto(mvm, sta, hdr, rx_status, phy_data.phy_info, desc,
2515 le32_to_cpu(pkt->len_n_flags), queue,
2516 &crypt_len)) {
2517 kfree_skb(skb);
2518 goto out;
2519 }
2520
2521 iwl_mvm_rx_fill_status(mvm, skb, &phy_data, queue);
2522
2523 if (sta) {
2524 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2525 struct ieee80211_vif *tx_blocked_vif =
2526 rcu_dereference(mvm->csa_tx_blocked_vif);
2527 u8 baid = (u8)((le32_to_cpu(desc->reorder_data) &
2528 IWL_RX_MPDU_REORDER_BAID_MASK) >>
2529 IWL_RX_MPDU_REORDER_BAID_SHIFT);
2530 struct iwl_fw_dbg_trigger_tlv *trig;
2531 struct ieee80211_vif *vif = mvmsta->vif;
2532
2533 if (!mvm->tcm.paused && len >= sizeof(*hdr) &&
2534 !is_multicast_ether_addr(hdr->addr1) &&
2535 ieee80211_is_data(hdr->frame_control) &&
2536 time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
2537 schedule_delayed_work(&mvm->tcm.work, 0);
2538
2539 /*
2540 * We have tx blocked stations (with CS bit). If we heard
2541 * frames from a blocked station on a new channel we can
2542 * TX to it again.
2543 */
2544 if (unlikely(tx_blocked_vif) && tx_blocked_vif == vif) {
2545 struct iwl_mvm_vif *mvmvif =
2546 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
2547 struct iwl_rx_sta_csa rx_sta_csa = {
2548 .all_sta_unblocked = true,
2549 .vif = tx_blocked_vif,
2550 };
2551
2552 if (mvmvif->csa_target_freq == rx_status->freq)
2553 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta,
2554 false);
2555 ieee80211_iterate_stations_atomic(mvm->hw,
2556 iwl_mvm_rx_get_sta_block_tx,
2557 &rx_sta_csa);
2558
2559 if (rx_sta_csa.all_sta_unblocked) {
2560 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2561 /* Unblock BCAST / MCAST station */
2562 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
2563 cancel_delayed_work(&mvm->cs_tx_unblock_dwork);
2564 }
2565 }
2566
2567 rs_update_last_rssi(mvm, mvmsta, rx_status);
2568
2569 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt,
2570 ieee80211_vif_to_wdev(vif),
2571 FW_DBG_TRIGGER_RSSI);
2572
2573 if (trig && ieee80211_is_beacon(hdr->frame_control)) {
2574 struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
2575 s32 rssi;
2576
2577 rssi_trig = (void *)trig->data;
2578 rssi = le32_to_cpu(rssi_trig->rssi);
2579
2580 if (rx_status->signal < rssi)
2581 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
2582 #if defined(__linux__)
2583 NULL);
2584 #elif defined(__FreeBSD__)
2585 "");
2586 #endif
2587 }
2588
2589 if (ieee80211_is_data(hdr->frame_control))
2590 iwl_mvm_rx_csum(mvm, sta, skb, pkt);
2591
2592 if (iwl_mvm_is_dup(sta, queue, rx_status, hdr, desc)) {
2593 kfree_skb(skb);
2594 goto out;
2595 }
2596
2597 /*
2598 * Our hardware de-aggregates AMSDUs but copies the mac header
2599 * as it to the de-aggregated MPDUs. We need to turn off the
2600 * AMSDU bit in the QoS control ourselves.
2601 * In addition, HW reverses addr3 and addr4 - reverse it back.
2602 */
2603 if ((desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
2604 !WARN_ON(!ieee80211_is_data_qos(hdr->frame_control))) {
2605 u8 *qc = ieee80211_get_qos_ctl(hdr);
2606
2607 *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
2608
2609 if (mvm->trans->trans_cfg->device_family ==
2610 IWL_DEVICE_FAMILY_9000) {
2611 iwl_mvm_flip_address(hdr->addr3);
2612
2613 if (ieee80211_has_a4(hdr->frame_control))
2614 iwl_mvm_flip_address(hdr->addr4);
2615 }
2616 }
2617 if (baid != IWL_RX_REORDER_DATA_INVALID_BAID) {
2618 u32 reorder_data = le32_to_cpu(desc->reorder_data);
2619
2620 iwl_mvm_agg_rx_received(mvm, reorder_data, baid);
2621 }
2622 }
2623
2624 /* management stuff on default queue */
2625 if (!queue) {
2626 if (unlikely((ieee80211_is_beacon(hdr->frame_control) ||
2627 ieee80211_is_probe_resp(hdr->frame_control)) &&
2628 mvm->sched_scan_pass_all ==
2629 SCHED_SCAN_PASS_ALL_ENABLED))
2630 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND;
2631
2632 if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
2633 ieee80211_is_probe_resp(hdr->frame_control)))
2634 rx_status->boottime_ns = ktime_get_boottime_ns();
2635 }
2636
2637 if (iwl_mvm_create_skb(mvm, skb, hdr, len, crypt_len, rxb)) {
2638 kfree_skb(skb);
2639 goto out;
2640 }
2641
2642 if (!iwl_mvm_reorder(mvm, napi, queue, sta, skb, desc) &&
2643 likely(!iwl_mvm_time_sync_frame(mvm, skb, hdr->addr2)) &&
2644 likely(!iwl_mvm_mei_filter_scan(mvm, skb)))
2645 iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue, sta,
2646 link_sta);
2647 out:
2648 rcu_read_unlock();
2649 }
2650
iwl_mvm_rx_monitor_no_data(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2651 void iwl_mvm_rx_monitor_no_data(struct iwl_mvm *mvm, struct napi_struct *napi,
2652 struct iwl_rx_cmd_buffer *rxb, int queue)
2653 {
2654 struct ieee80211_rx_status *rx_status;
2655 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2656 struct iwl_rx_no_data_ver_3 *desc = (void *)pkt->data;
2657 u32 rssi;
2658 u32 info_type;
2659 struct ieee80211_sta *sta = NULL;
2660 struct sk_buff *skb;
2661 struct iwl_mvm_rx_phy_data phy_data;
2662 u32 format;
2663
2664 if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
2665 return;
2666
2667 if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(struct iwl_rx_no_data)))
2668 return;
2669
2670 rssi = le32_to_cpu(desc->rssi);
2671 info_type = le32_to_cpu(desc->info) & RX_NO_DATA_INFO_TYPE_MSK;
2672 phy_data.d0 = desc->phy_info[0];
2673 phy_data.d1 = desc->phy_info[1];
2674 phy_data.phy_info = IWL_RX_MPDU_PHY_TSF_OVERLOAD;
2675 phy_data.gp2_on_air_rise = le32_to_cpu(desc->on_air_rise_time);
2676 phy_data.rate_n_flags = le32_to_cpu(desc->rate);
2677 phy_data.energy_a = u32_get_bits(rssi, RX_NO_DATA_CHAIN_A_MSK);
2678 phy_data.energy_b = u32_get_bits(rssi, RX_NO_DATA_CHAIN_B_MSK);
2679 phy_data.channel = u32_get_bits(rssi, RX_NO_DATA_CHANNEL_MSK);
2680 phy_data.with_data = false;
2681 phy_data.rx_vec[0] = desc->rx_vec[0];
2682 phy_data.rx_vec[1] = desc->rx_vec[1];
2683
2684 if (iwl_fw_lookup_notif_ver(mvm->fw, DATA_PATH_GROUP,
2685 RX_NO_DATA_NOTIF, 0) < 2) {
2686 IWL_DEBUG_DROP(mvm, "Got an old rate format. Old rate: 0x%x\n",
2687 phy_data.rate_n_flags);
2688 phy_data.rate_n_flags = iwl_new_rate_from_v1(phy_data.rate_n_flags);
2689 IWL_DEBUG_DROP(mvm, " Rate after conversion to the new format: 0x%x\n",
2690 phy_data.rate_n_flags);
2691 }
2692
2693 format = phy_data.rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
2694
2695 if (iwl_fw_lookup_notif_ver(mvm->fw, DATA_PATH_GROUP,
2696 RX_NO_DATA_NOTIF, 0) >= 3) {
2697 if (unlikely(iwl_rx_packet_payload_len(pkt) <
2698 sizeof(struct iwl_rx_no_data_ver_3)))
2699 /* invalid len for ver 3 */
2700 return;
2701 phy_data.rx_vec[2] = desc->rx_vec[2];
2702 phy_data.rx_vec[3] = desc->rx_vec[3];
2703 } else {
2704 if (format == RATE_MCS_EHT_MSK)
2705 /* no support for EHT before version 3 API */
2706 return;
2707 }
2708
2709 /* Dont use dev_alloc_skb(), we'll have enough headroom once
2710 * ieee80211_hdr pulled.
2711 */
2712 skb = alloc_skb(128, GFP_ATOMIC);
2713 if (!skb) {
2714 IWL_ERR(mvm, "alloc_skb failed\n");
2715 return;
2716 }
2717
2718 rx_status = IEEE80211_SKB_RXCB(skb);
2719
2720 /* 0-length PSDU */
2721 rx_status->flag |= RX_FLAG_NO_PSDU;
2722
2723 switch (info_type) {
2724 case RX_NO_DATA_INFO_TYPE_NDP:
2725 rx_status->zero_length_psdu_type =
2726 IEEE80211_RADIOTAP_ZERO_LEN_PSDU_SOUNDING;
2727 break;
2728 case RX_NO_DATA_INFO_TYPE_MU_UNMATCHED:
2729 case RX_NO_DATA_INFO_TYPE_TB_UNMATCHED:
2730 rx_status->zero_length_psdu_type =
2731 IEEE80211_RADIOTAP_ZERO_LEN_PSDU_NOT_CAPTURED;
2732 break;
2733 default:
2734 rx_status->zero_length_psdu_type =
2735 IEEE80211_RADIOTAP_ZERO_LEN_PSDU_VENDOR;
2736 break;
2737 }
2738
2739 rx_status->band = phy_data.channel > 14 ? NL80211_BAND_5GHZ :
2740 NL80211_BAND_2GHZ;
2741
2742 iwl_mvm_rx_fill_status(mvm, skb, &phy_data, queue);
2743
2744 /* no more radio tap info should be put after this point.
2745 *
2746 * We mark it as mac header, for upper layers to know where
2747 * all radio tap header ends.
2748 */
2749 skb_reset_mac_header(skb);
2750
2751 /*
2752 * Override the nss from the rx_vec since the rate_n_flags has
2753 * only 2 bits for the nss which gives a max of 4 ss but there
2754 * may be up to 8 spatial streams.
2755 */
2756 switch (format) {
2757 case RATE_MCS_VHT_MSK:
2758 rx_status->nss =
2759 le32_get_bits(desc->rx_vec[0],
2760 RX_NO_DATA_RX_VEC0_VHT_NSTS_MSK) + 1;
2761 break;
2762 case RATE_MCS_HE_MSK:
2763 rx_status->nss =
2764 le32_get_bits(desc->rx_vec[0],
2765 RX_NO_DATA_RX_VEC0_HE_NSTS_MSK) + 1;
2766 break;
2767 case RATE_MCS_EHT_MSK:
2768 rx_status->nss =
2769 le32_get_bits(desc->rx_vec[2],
2770 RX_NO_DATA_RX_VEC2_EHT_NSTS_MSK) + 1;
2771 }
2772
2773 rcu_read_lock();
2774 ieee80211_rx_napi(mvm->hw, sta, skb, napi);
2775 rcu_read_unlock();
2776 }
2777
iwl_mvm_rx_frame_release(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2778 void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
2779 struct iwl_rx_cmd_buffer *rxb, int queue)
2780 {
2781 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2782 struct iwl_frame_release *release = (void *)pkt->data;
2783
2784 if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(*release)))
2785 return;
2786
2787 iwl_mvm_release_frames_from_notif(mvm, napi, release->baid,
2788 le16_to_cpu(release->nssn),
2789 queue, 0);
2790 }
2791
iwl_mvm_rx_bar_frame_release(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2792 void iwl_mvm_rx_bar_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
2793 struct iwl_rx_cmd_buffer *rxb, int queue)
2794 {
2795 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2796 struct iwl_bar_frame_release *release = (void *)pkt->data;
2797 unsigned int baid = le32_get_bits(release->ba_info,
2798 IWL_BAR_FRAME_RELEASE_BAID_MASK);
2799 unsigned int nssn = le32_get_bits(release->ba_info,
2800 IWL_BAR_FRAME_RELEASE_NSSN_MASK);
2801 unsigned int sta_id = le32_get_bits(release->sta_tid,
2802 IWL_BAR_FRAME_RELEASE_STA_MASK);
2803 unsigned int tid = le32_get_bits(release->sta_tid,
2804 IWL_BAR_FRAME_RELEASE_TID_MASK);
2805 struct iwl_mvm_baid_data *baid_data;
2806
2807 if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(*release)))
2808 return;
2809
2810 if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID ||
2811 baid >= ARRAY_SIZE(mvm->baid_map)))
2812 return;
2813
2814 rcu_read_lock();
2815 baid_data = rcu_dereference(mvm->baid_map[baid]);
2816 if (!baid_data) {
2817 IWL_DEBUG_RX(mvm,
2818 "Got valid BAID %d but not allocated, invalid BAR release!\n",
2819 baid);
2820 goto out;
2821 }
2822
2823 if (WARN(tid != baid_data->tid || sta_id > IWL_MVM_STATION_COUNT_MAX ||
2824 !(baid_data->sta_mask & BIT(sta_id)),
2825 "baid 0x%x is mapped to sta_mask:0x%x tid:%d, but BAR release received for sta:%d tid:%d\n",
2826 baid, baid_data->sta_mask, baid_data->tid, sta_id,
2827 tid))
2828 goto out;
2829
2830 iwl_mvm_release_frames_from_notif(mvm, napi, baid, nssn, queue, 0);
2831 out:
2832 rcu_read_unlock();
2833 }
2834