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 #include "iwl-trans.h"
10 #include "mvm.h"
11 #include "fw-api.h"
12 #include "time-sync.h"
13
iwl_mvm_check_pn(struct iwl_mvm * mvm,struct sk_buff * skb,int queue,struct ieee80211_sta * sta)14 static inline int iwl_mvm_check_pn(struct iwl_mvm *mvm, struct sk_buff *skb,
15 int queue, struct ieee80211_sta *sta)
16 {
17 struct iwl_mvm_sta *mvmsta;
18 struct ieee80211_hdr *hdr = (void *)skb_mac_header(skb);
19 struct ieee80211_rx_status *stats = IEEE80211_SKB_RXCB(skb);
20 struct iwl_mvm_key_pn *ptk_pn;
21 int res;
22 u8 tid, keyidx;
23 u8 pn[IEEE80211_CCMP_PN_LEN];
24 u8 *extiv;
25
26 /* do PN checking */
27
28 /* multicast and non-data only arrives on default queue */
29 if (!ieee80211_is_data(hdr->frame_control) ||
30 is_multicast_ether_addr(hdr->addr1))
31 return 0;
32
33 /* do not check PN for open AP */
34 if (!(stats->flag & RX_FLAG_DECRYPTED))
35 return 0;
36
37 /*
38 * avoid checking for default queue - we don't want to replicate
39 * all the logic that's necessary for checking the PN on fragmented
40 * frames, leave that to mac80211
41 */
42 if (queue == 0)
43 return 0;
44
45 /* if we are here - this for sure is either CCMP or GCMP */
46 if (IS_ERR_OR_NULL(sta)) {
47 IWL_DEBUG_DROP(mvm,
48 "expected hw-decrypted unicast frame for station\n");
49 return -1;
50 }
51
52 mvmsta = iwl_mvm_sta_from_mac80211(sta);
53
54 extiv = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control);
55 keyidx = extiv[3] >> 6;
56
57 ptk_pn = rcu_dereference(mvmsta->ptk_pn[keyidx]);
58 if (!ptk_pn)
59 return -1;
60
61 if (ieee80211_is_data_qos(hdr->frame_control))
62 tid = ieee80211_get_tid(hdr);
63 else
64 tid = 0;
65
66 /* we don't use HCCA/802.11 QoS TSPECs, so drop such frames */
67 if (tid >= IWL_MAX_TID_COUNT)
68 return -1;
69
70 /* load pn */
71 pn[0] = extiv[7];
72 pn[1] = extiv[6];
73 pn[2] = extiv[5];
74 pn[3] = extiv[4];
75 pn[4] = extiv[1];
76 pn[5] = extiv[0];
77
78 res = memcmp(pn, ptk_pn->q[queue].pn[tid], IEEE80211_CCMP_PN_LEN);
79 if (res < 0)
80 return -1;
81 if (!res && !(stats->flag & RX_FLAG_ALLOW_SAME_PN))
82 return -1;
83
84 memcpy(ptk_pn->q[queue].pn[tid], pn, IEEE80211_CCMP_PN_LEN);
85 stats->flag |= RX_FLAG_PN_VALIDATED;
86
87 return 0;
88 }
89
90 /* iwl_mvm_create_skb Adds the rxb to a new skb */
iwl_mvm_create_skb(struct iwl_mvm * mvm,struct sk_buff * skb,struct ieee80211_hdr * hdr,u16 len,u8 crypt_len,struct iwl_rx_cmd_buffer * rxb)91 static int iwl_mvm_create_skb(struct iwl_mvm *mvm, struct sk_buff *skb,
92 struct ieee80211_hdr *hdr, u16 len, u8 crypt_len,
93 struct iwl_rx_cmd_buffer *rxb)
94 {
95 struct iwl_rx_packet *pkt = rxb_addr(rxb);
96 struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
97 unsigned int headlen, fraglen, pad_len = 0;
98 unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control);
99 u8 mic_crc_len = u8_get_bits(desc->mac_flags1,
100 IWL_RX_MPDU_MFLG1_MIC_CRC_LEN_MASK) << 1;
101
102 if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
103 len -= 2;
104 pad_len = 2;
105 }
106
107 /*
108 * For non monitor interface strip the bytes the RADA might not have
109 * removed (it might be disabled, e.g. for mgmt frames). As a monitor
110 * interface cannot exist with other interfaces, this removal is safe
111 * and sufficient, in monitor mode there's no decryption being done.
112 */
113 if (len > mic_crc_len && !ieee80211_hw_check(mvm->hw, RX_INCLUDES_FCS))
114 len -= mic_crc_len;
115
116 /* If frame is small enough to fit in skb->head, pull it completely.
117 * If not, only pull ieee80211_hdr (including crypto if present, and
118 * an additional 8 bytes for SNAP/ethertype, see below) so that
119 * splice() or TCP coalesce are more efficient.
120 *
121 * Since, in addition, ieee80211_data_to_8023() always pull in at
122 * least 8 bytes (possibly more for mesh) we can do the same here
123 * to save the cost of doing it later. That still doesn't pull in
124 * the actual IP header since the typical case has a SNAP header.
125 * If the latter changes (there are efforts in the standards group
126 * to do so) we should revisit this and ieee80211_data_to_8023().
127 */
128 headlen = (len <= skb_tailroom(skb)) ? len :
129 hdrlen + crypt_len + 8;
130
131 /* The firmware may align the packet to DWORD.
132 * The padding is inserted after the IV.
133 * After copying the header + IV skip the padding if
134 * present before copying packet data.
135 */
136 hdrlen += crypt_len;
137
138 if (unlikely(headlen < hdrlen))
139 return -EINVAL;
140
141 /* Since data doesn't move data while putting data on skb and that is
142 * the only way we use, data + len is the next place that hdr would be put
143 */
144 skb_set_mac_header(skb, skb->len);
145 skb_put_data(skb, hdr, hdrlen);
146 skb_put_data(skb, (u8 *)hdr + hdrlen + pad_len, headlen - hdrlen);
147
148 /*
149 * If we did CHECKSUM_COMPLETE, the hardware only does it right for
150 * certain cases and starts the checksum after the SNAP. Check if
151 * this is the case - it's easier to just bail out to CHECKSUM_NONE
152 * in the cases the hardware didn't handle, since it's rare to see
153 * such packets, even though the hardware did calculate the checksum
154 * in this case, just starting after the MAC header instead.
155 *
156 * Starting from Bz hardware, it calculates starting directly after
157 * the MAC header, so that matches mac80211's expectation.
158 */
159 if (skb->ip_summed == CHECKSUM_COMPLETE) {
160 struct {
161 u8 hdr[6];
162 __be16 type;
163 } __packed *shdr = (void *)((u8 *)hdr + hdrlen + pad_len);
164
165 if (unlikely(headlen - hdrlen < sizeof(*shdr) ||
166 !ether_addr_equal(shdr->hdr, rfc1042_header) ||
167 (shdr->type != htons(ETH_P_IP) &&
168 shdr->type != htons(ETH_P_ARP) &&
169 shdr->type != htons(ETH_P_IPV6) &&
170 shdr->type != htons(ETH_P_8021Q) &&
171 shdr->type != htons(ETH_P_PAE) &&
172 shdr->type != htons(ETH_P_TDLS))))
173 skb->ip_summed = CHECKSUM_NONE;
174 else if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_BZ)
175 /* mac80211 assumes full CSUM including SNAP header */
176 skb_postpush_rcsum(skb, shdr, sizeof(*shdr));
177 }
178
179 fraglen = len - headlen;
180
181 if (fraglen) {
182 int offset = (u8 *)hdr + headlen + pad_len -
183 (u8 *)rxb_addr(rxb) + rxb_offset(rxb);
184
185 skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset,
186 fraglen, rxb->truesize);
187 }
188
189 return 0;
190 }
191
192 /* put a TLV on the skb and return data pointer
193 *
194 * Also pad to 4 the len and zero out all data part
195 */
196 static void *
iwl_mvm_radiotap_put_tlv(struct sk_buff * skb,u16 type,u16 len)197 iwl_mvm_radiotap_put_tlv(struct sk_buff *skb, u16 type, u16 len)
198 {
199 struct ieee80211_radiotap_tlv *tlv;
200
201 tlv = skb_put(skb, sizeof(*tlv));
202 tlv->type = cpu_to_le16(type);
203 tlv->len = cpu_to_le16(len);
204 return skb_put_zero(skb, ALIGN(len, 4));
205 }
206
iwl_mvm_add_rtap_sniffer_config(struct iwl_mvm * mvm,struct sk_buff * skb)207 static void iwl_mvm_add_rtap_sniffer_config(struct iwl_mvm *mvm,
208 struct sk_buff *skb)
209 {
210 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
211 struct ieee80211_radiotap_vendor_content *radiotap;
212 const u16 vendor_data_len = sizeof(mvm->cur_aid);
213
214 if (!mvm->cur_aid)
215 return;
216
217 radiotap = iwl_mvm_radiotap_put_tlv(skb,
218 IEEE80211_RADIOTAP_VENDOR_NAMESPACE,
219 sizeof(*radiotap) + vendor_data_len);
220
221 /* Intel OUI */
222 radiotap->oui[0] = 0xf6;
223 radiotap->oui[1] = 0x54;
224 radiotap->oui[2] = 0x25;
225 /* radiotap sniffer config sub-namespace */
226 radiotap->oui_subtype = 1;
227 radiotap->vendor_type = 0;
228
229 /* fill the data now */
230 memcpy(radiotap->data, &mvm->cur_aid, sizeof(mvm->cur_aid));
231
232 rx_status->flag |= RX_FLAG_RADIOTAP_TLV_AT_END;
233 }
234
235 /* iwl_mvm_pass_packet_to_mac80211 - passes the packet for mac80211 */
iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm * mvm,struct napi_struct * napi,struct sk_buff * skb,int queue,struct ieee80211_sta * sta)236 static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm,
237 struct napi_struct *napi,
238 struct sk_buff *skb, int queue,
239 struct ieee80211_sta *sta)
240 {
241 if (unlikely(iwl_mvm_check_pn(mvm, skb, queue, sta))) {
242 kfree_skb(skb);
243 return;
244 }
245
246 ieee80211_rx_napi(mvm->hw, sta, skb, napi);
247 }
248
iwl_mvm_get_signal_strength(struct iwl_mvm * mvm,struct ieee80211_rx_status * rx_status,u32 rate_n_flags,int energy_a,int energy_b)249 static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm,
250 struct ieee80211_rx_status *rx_status,
251 u32 rate_n_flags, int energy_a,
252 int energy_b)
253 {
254 int max_energy;
255 u32 rate_flags = rate_n_flags;
256
257 energy_a = energy_a ? -energy_a : S8_MIN;
258 energy_b = energy_b ? -energy_b : S8_MIN;
259 max_energy = max(energy_a, energy_b);
260
261 IWL_DEBUG_STATS(mvm, "energy In A %d B %d, and max %d\n",
262 energy_a, energy_b, max_energy);
263
264 rx_status->signal = max_energy;
265 rx_status->chains =
266 (rate_flags & RATE_MCS_ANT_AB_MSK) >> RATE_MCS_ANT_POS;
267 rx_status->chain_signal[0] = energy_a;
268 rx_status->chain_signal[1] = energy_b;
269 }
270
iwl_mvm_rx_mgmt_prot(struct ieee80211_sta * sta,struct ieee80211_hdr * hdr,struct iwl_rx_mpdu_desc * desc,u32 status,struct ieee80211_rx_status * stats)271 static int iwl_mvm_rx_mgmt_prot(struct ieee80211_sta *sta,
272 struct ieee80211_hdr *hdr,
273 struct iwl_rx_mpdu_desc *desc,
274 u32 status,
275 struct ieee80211_rx_status *stats)
276 {
277 struct wireless_dev *wdev;
278 struct iwl_mvm_sta *mvmsta;
279 struct iwl_mvm_vif *mvmvif;
280 u8 keyid;
281 struct ieee80211_key_conf *key;
282 u32 len = le16_to_cpu(desc->mpdu_len);
283 const u8 *frame = (void *)hdr;
284
285 if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) == IWL_RX_MPDU_STATUS_SEC_NONE)
286 return 0;
287
288 /*
289 * For non-beacon, we don't really care. But beacons may
290 * be filtered out, and we thus need the firmware's replay
291 * detection, otherwise beacons the firmware previously
292 * filtered could be replayed, or something like that, and
293 * it can filter a lot - though usually only if nothing has
294 * changed.
295 */
296 if (!ieee80211_is_beacon(hdr->frame_control))
297 return 0;
298
299 if (!sta)
300 return -1;
301
302 mvmsta = iwl_mvm_sta_from_mac80211(sta);
303 mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
304
305 /* key mismatch - will also report !MIC_OK but we shouldn't count it */
306 if (!(status & IWL_RX_MPDU_STATUS_KEY_VALID))
307 goto report;
308
309 /* good cases */
310 if (likely(status & IWL_RX_MPDU_STATUS_MIC_OK &&
311 !(status & IWL_RX_MPDU_STATUS_REPLAY_ERROR))) {
312 stats->flag |= RX_FLAG_DECRYPTED;
313 return 0;
314 }
315
316 /*
317 * both keys will have the same cipher and MIC length, use
318 * whichever one is available
319 */
320 key = rcu_dereference(mvmvif->bcn_prot.keys[0]);
321 if (!key) {
322 key = rcu_dereference(mvmvif->bcn_prot.keys[1]);
323 if (!key)
324 goto report;
325 }
326
327 if (len < key->icv_len + IEEE80211_GMAC_PN_LEN + 2)
328 goto report;
329
330 /* get the real key ID */
331 keyid = frame[len - key->icv_len - IEEE80211_GMAC_PN_LEN - 2];
332 /* and if that's the other key, look it up */
333 if (keyid != key->keyidx) {
334 /*
335 * shouldn't happen since firmware checked, but be safe
336 * in case the MIC length is wrong too, for example
337 */
338 if (keyid != 6 && keyid != 7)
339 return -1;
340 key = rcu_dereference(mvmvif->bcn_prot.keys[keyid - 6]);
341 if (!key)
342 goto report;
343 }
344
345 /* Report status to mac80211 */
346 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
347 ieee80211_key_mic_failure(key);
348 else if (status & IWL_RX_MPDU_STATUS_REPLAY_ERROR)
349 ieee80211_key_replay(key);
350 report:
351 wdev = ieee80211_vif_to_wdev(mvmsta->vif);
352 if (wdev->netdev)
353 cfg80211_rx_unprot_mlme_mgmt(wdev->netdev, (void *)hdr, len);
354
355 return -1;
356 }
357
iwl_mvm_rx_crypto(struct iwl_mvm * mvm,struct ieee80211_sta * sta,struct ieee80211_hdr * hdr,struct ieee80211_rx_status * stats,u16 phy_info,struct iwl_rx_mpdu_desc * desc,u32 pkt_flags,int queue,u8 * crypt_len)358 static int iwl_mvm_rx_crypto(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
359 struct ieee80211_hdr *hdr,
360 struct ieee80211_rx_status *stats, u16 phy_info,
361 struct iwl_rx_mpdu_desc *desc,
362 u32 pkt_flags, int queue, u8 *crypt_len)
363 {
364 u32 status = le32_to_cpu(desc->status);
365
366 /*
367 * Drop UNKNOWN frames in aggregation, unless in monitor mode
368 * (where we don't have the keys).
369 * We limit this to aggregation because in TKIP this is a valid
370 * scenario, since we may not have the (correct) TTAK (phase 1
371 * key) in the firmware.
372 */
373 if (phy_info & IWL_RX_MPDU_PHY_AMPDU &&
374 (status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
375 IWL_RX_MPDU_STATUS_SEC_UNKNOWN && !mvm->monitor_on)
376 return -1;
377
378 if (unlikely(ieee80211_is_mgmt(hdr->frame_control) &&
379 !ieee80211_has_protected(hdr->frame_control)))
380 return iwl_mvm_rx_mgmt_prot(sta, hdr, desc, status, stats);
381
382 if (!ieee80211_has_protected(hdr->frame_control) ||
383 (status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
384 IWL_RX_MPDU_STATUS_SEC_NONE)
385 return 0;
386
387 /* TODO: handle packets encrypted with unknown alg */
388
389 switch (status & IWL_RX_MPDU_STATUS_SEC_MASK) {
390 case IWL_RX_MPDU_STATUS_SEC_CCM:
391 case IWL_RX_MPDU_STATUS_SEC_GCM:
392 BUILD_BUG_ON(IEEE80211_CCMP_PN_LEN != IEEE80211_GCMP_PN_LEN);
393 /* alg is CCM: check MIC only */
394 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
395 return -1;
396
397 stats->flag |= RX_FLAG_DECRYPTED | RX_FLAG_MIC_STRIPPED;
398 *crypt_len = IEEE80211_CCMP_HDR_LEN;
399 return 0;
400 case IWL_RX_MPDU_STATUS_SEC_TKIP:
401 /* Don't drop the frame and decrypt it in SW */
402 if (!fw_has_api(&mvm->fw->ucode_capa,
403 IWL_UCODE_TLV_API_DEPRECATE_TTAK) &&
404 !(status & IWL_RX_MPDU_RES_STATUS_TTAK_OK))
405 return 0;
406
407 if (mvm->trans->trans_cfg->gen2 &&
408 !(status & RX_MPDU_RES_STATUS_MIC_OK))
409 stats->flag |= RX_FLAG_MMIC_ERROR;
410
411 *crypt_len = IEEE80211_TKIP_IV_LEN;
412 fallthrough;
413 case IWL_RX_MPDU_STATUS_SEC_WEP:
414 if (!(status & IWL_RX_MPDU_STATUS_ICV_OK))
415 return -1;
416
417 stats->flag |= RX_FLAG_DECRYPTED;
418 if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
419 IWL_RX_MPDU_STATUS_SEC_WEP)
420 *crypt_len = IEEE80211_WEP_IV_LEN;
421
422 if (pkt_flags & FH_RSCSR_RADA_EN) {
423 stats->flag |= RX_FLAG_ICV_STRIPPED;
424 if (mvm->trans->trans_cfg->gen2)
425 stats->flag |= RX_FLAG_MMIC_STRIPPED;
426 }
427
428 return 0;
429 case IWL_RX_MPDU_STATUS_SEC_EXT_ENC:
430 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
431 return -1;
432 stats->flag |= RX_FLAG_DECRYPTED;
433 return 0;
434 case RX_MPDU_RES_STATUS_SEC_CMAC_GMAC_ENC:
435 break;
436 default:
437 /*
438 * Sometimes we can get frames that were not decrypted
439 * because the firmware didn't have the keys yet. This can
440 * happen after connection where we can get multicast frames
441 * before the GTK is installed.
442 * Silently drop those frames.
443 * Also drop un-decrypted frames in monitor mode.
444 */
445 if (!is_multicast_ether_addr(hdr->addr1) &&
446 !mvm->monitor_on && net_ratelimit())
447 IWL_WARN(mvm, "Unhandled alg: 0x%x\n", status);
448 }
449
450 return 0;
451 }
452
iwl_mvm_rx_csum(struct iwl_mvm * mvm,struct ieee80211_sta * sta,struct sk_buff * skb,struct iwl_rx_packet * pkt)453 static void iwl_mvm_rx_csum(struct iwl_mvm *mvm,
454 struct ieee80211_sta *sta,
455 struct sk_buff *skb,
456 struct iwl_rx_packet *pkt)
457 {
458 struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
459
460 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
461 if (pkt->len_n_flags & cpu_to_le32(FH_RSCSR_RPA_EN)) {
462 u16 hwsum = be16_to_cpu(desc->v3.raw_xsum);
463
464 skb->ip_summed = CHECKSUM_COMPLETE;
465 skb->csum = csum_unfold(~(__force __sum16)hwsum);
466 }
467 } else {
468 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
469 struct iwl_mvm_vif *mvmvif;
470 u16 flags = le16_to_cpu(desc->l3l4_flags);
471 u8 l3_prot = (u8)((flags & IWL_RX_L3L4_L3_PROTO_MASK) >>
472 IWL_RX_L3_PROTO_POS);
473
474 mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
475
476 if (mvmvif->features & NETIF_F_RXCSUM &&
477 flags & IWL_RX_L3L4_TCP_UDP_CSUM_OK &&
478 (flags & IWL_RX_L3L4_IP_HDR_CSUM_OK ||
479 l3_prot == IWL_RX_L3_TYPE_IPV6 ||
480 l3_prot == IWL_RX_L3_TYPE_IPV6_FRAG))
481 skb->ip_summed = CHECKSUM_UNNECESSARY;
482 }
483 }
484
485 /*
486 * returns true if a packet is a duplicate or invalid tid and should be dropped.
487 * Updates AMSDU PN tracking info
488 */
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)489 static bool iwl_mvm_is_dup(struct ieee80211_sta *sta, int queue,
490 struct ieee80211_rx_status *rx_status,
491 struct ieee80211_hdr *hdr,
492 struct iwl_rx_mpdu_desc *desc)
493 {
494 struct iwl_mvm_sta *mvm_sta;
495 struct iwl_mvm_rxq_dup_data *dup_data;
496 u8 tid, sub_frame_idx;
497
498 if (WARN_ON(IS_ERR_OR_NULL(sta)))
499 return false;
500
501 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
502
503 if (WARN_ON_ONCE(!mvm_sta->dup_data))
504 return false;
505
506 dup_data = &mvm_sta->dup_data[queue];
507
508 /*
509 * Drop duplicate 802.11 retransmissions
510 * (IEEE 802.11-2012: 9.3.2.10 "Duplicate detection and recovery")
511 */
512 if (ieee80211_is_ctl(hdr->frame_control) ||
513 ieee80211_is_qos_nullfunc(hdr->frame_control) ||
514 is_multicast_ether_addr(hdr->addr1)) {
515 rx_status->flag |= RX_FLAG_DUP_VALIDATED;
516 return false;
517 }
518
519 if (ieee80211_is_data_qos(hdr->frame_control)) {
520 /* frame has qos control */
521 tid = ieee80211_get_tid(hdr);
522 if (tid >= IWL_MAX_TID_COUNT)
523 return true;
524 } else {
525 tid = IWL_MAX_TID_COUNT;
526 }
527
528 /* If this wasn't a part of an A-MSDU the sub-frame index will be 0 */
529 sub_frame_idx = desc->amsdu_info &
530 IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
531
532 if (unlikely(ieee80211_has_retry(hdr->frame_control) &&
533 dup_data->last_seq[tid] == hdr->seq_ctrl &&
534 dup_data->last_sub_frame[tid] >= sub_frame_idx))
535 return true;
536
537 /* Allow same PN as the first subframe for following sub frames */
538 if (dup_data->last_seq[tid] == hdr->seq_ctrl &&
539 sub_frame_idx > dup_data->last_sub_frame[tid] &&
540 desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU)
541 rx_status->flag |= RX_FLAG_ALLOW_SAME_PN;
542
543 dup_data->last_seq[tid] = hdr->seq_ctrl;
544 dup_data->last_sub_frame[tid] = sub_frame_idx;
545
546 rx_status->flag |= RX_FLAG_DUP_VALIDATED;
547
548 return false;
549 }
550
551 /*
552 * Returns true if sn2 - buffer_size < sn1 < sn2.
553 * To be used only in order to compare reorder buffer head with NSSN.
554 * We fully trust NSSN unless it is behind us due to reorder timeout.
555 * Reorder timeout can only bring us up to buffer_size SNs ahead of NSSN.
556 */
iwl_mvm_is_sn_less(u16 sn1,u16 sn2,u16 buffer_size)557 static bool iwl_mvm_is_sn_less(u16 sn1, u16 sn2, u16 buffer_size)
558 {
559 return ieee80211_sn_less(sn1, sn2) &&
560 !ieee80211_sn_less(sn1, sn2 - buffer_size);
561 }
562
iwl_mvm_sync_nssn(struct iwl_mvm * mvm,u8 baid,u16 nssn)563 static void iwl_mvm_sync_nssn(struct iwl_mvm *mvm, u8 baid, u16 nssn)
564 {
565 if (IWL_MVM_USE_NSSN_SYNC) {
566 struct iwl_mvm_nssn_sync_data notif = {
567 .baid = baid,
568 .nssn = nssn,
569 };
570
571 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NSSN_SYNC, false,
572 ¬if, sizeof(notif));
573 }
574 }
575
576 #define RX_REORDER_BUF_TIMEOUT_MQ (HZ / 10)
577
578 enum iwl_mvm_release_flags {
579 IWL_MVM_RELEASE_SEND_RSS_SYNC = BIT(0),
580 IWL_MVM_RELEASE_FROM_RSS_SYNC = BIT(1),
581 };
582
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)583 static void iwl_mvm_release_frames(struct iwl_mvm *mvm,
584 struct ieee80211_sta *sta,
585 struct napi_struct *napi,
586 struct iwl_mvm_baid_data *baid_data,
587 struct iwl_mvm_reorder_buffer *reorder_buf,
588 u16 nssn, u32 flags)
589 {
590 struct iwl_mvm_reorder_buf_entry *entries =
591 &baid_data->entries[reorder_buf->queue *
592 baid_data->entries_per_queue];
593 u16 ssn = reorder_buf->head_sn;
594
595 lockdep_assert_held(&reorder_buf->lock);
596
597 /*
598 * We keep the NSSN not too far behind, if we are sync'ing it and it
599 * is more than 2048 ahead of us, it must be behind us. Discard it.
600 * This can happen if the queue that hit the 0 / 2048 seqno was lagging
601 * behind and this queue already processed packets. The next if
602 * would have caught cases where this queue would have processed less
603 * than 64 packets, but it may have processed more than 64 packets.
604 */
605 if ((flags & IWL_MVM_RELEASE_FROM_RSS_SYNC) &&
606 ieee80211_sn_less(nssn, ssn))
607 goto set_timer;
608
609 /* ignore nssn smaller than head sn - this can happen due to timeout */
610 if (iwl_mvm_is_sn_less(nssn, ssn, reorder_buf->buf_size))
611 goto set_timer;
612
613 while (iwl_mvm_is_sn_less(ssn, nssn, reorder_buf->buf_size)) {
614 int index = ssn % reorder_buf->buf_size;
615 struct sk_buff_head *skb_list = &entries[index].e.frames;
616 struct sk_buff *skb;
617
618 ssn = ieee80211_sn_inc(ssn);
619 if ((flags & IWL_MVM_RELEASE_SEND_RSS_SYNC) &&
620 (ssn == 2048 || ssn == 0))
621 iwl_mvm_sync_nssn(mvm, baid_data->baid, ssn);
622
623 /*
624 * Empty the list. Will have more than one frame for A-MSDU.
625 * Empty list is valid as well since nssn indicates frames were
626 * received.
627 */
628 while ((skb = __skb_dequeue(skb_list))) {
629 iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb,
630 reorder_buf->queue,
631 sta);
632 reorder_buf->num_stored--;
633 }
634 }
635 reorder_buf->head_sn = nssn;
636
637 set_timer:
638 if (reorder_buf->num_stored && !reorder_buf->removed) {
639 u16 index = reorder_buf->head_sn % reorder_buf->buf_size;
640
641 while (skb_queue_empty(&entries[index].e.frames))
642 index = (index + 1) % reorder_buf->buf_size;
643 /* modify timer to match next frame's expiration time */
644 mod_timer(&reorder_buf->reorder_timer,
645 entries[index].e.reorder_time + 1 +
646 RX_REORDER_BUF_TIMEOUT_MQ);
647 } else {
648 del_timer(&reorder_buf->reorder_timer);
649 }
650 }
651
iwl_mvm_reorder_timer_expired(struct timer_list * t)652 void iwl_mvm_reorder_timer_expired(struct timer_list *t)
653 {
654 struct iwl_mvm_reorder_buffer *buf = from_timer(buf, t, reorder_timer);
655 struct iwl_mvm_baid_data *baid_data =
656 iwl_mvm_baid_data_from_reorder_buf(buf);
657 struct iwl_mvm_reorder_buf_entry *entries =
658 &baid_data->entries[buf->queue * baid_data->entries_per_queue];
659 int i;
660 u16 sn = 0, index = 0;
661 bool expired = false;
662 bool cont = false;
663
664 spin_lock(&buf->lock);
665
666 if (!buf->num_stored || buf->removed) {
667 spin_unlock(&buf->lock);
668 return;
669 }
670
671 for (i = 0; i < buf->buf_size ; i++) {
672 index = (buf->head_sn + i) % buf->buf_size;
673
674 if (skb_queue_empty(&entries[index].e.frames)) {
675 /*
676 * If there is a hole and the next frame didn't expire
677 * we want to break and not advance SN
678 */
679 cont = false;
680 continue;
681 }
682 if (!cont &&
683 !time_after(jiffies, entries[index].e.reorder_time +
684 RX_REORDER_BUF_TIMEOUT_MQ))
685 break;
686
687 expired = true;
688 /* continue until next hole after this expired frames */
689 cont = true;
690 sn = ieee80211_sn_add(buf->head_sn, i + 1);
691 }
692
693 if (expired) {
694 struct ieee80211_sta *sta;
695 struct iwl_mvm_sta *mvmsta;
696 u8 sta_id = ffs(baid_data->sta_mask) - 1;
697
698 rcu_read_lock();
699 sta = rcu_dereference(buf->mvm->fw_id_to_mac_id[sta_id]);
700 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {
701 rcu_read_unlock();
702 goto out;
703 }
704
705 mvmsta = iwl_mvm_sta_from_mac80211(sta);
706
707 /* SN is set to the last expired frame + 1 */
708 IWL_DEBUG_HT(buf->mvm,
709 "Releasing expired frames for sta %u, sn %d\n",
710 sta_id, sn);
711 iwl_mvm_event_frame_timeout_callback(buf->mvm, mvmsta->vif,
712 sta, baid_data->tid);
713 iwl_mvm_release_frames(buf->mvm, sta, NULL, baid_data,
714 buf, sn, IWL_MVM_RELEASE_SEND_RSS_SYNC);
715 rcu_read_unlock();
716 } else {
717 /*
718 * If no frame expired and there are stored frames, index is now
719 * pointing to the first unexpired frame - modify timer
720 * accordingly to this frame.
721 */
722 mod_timer(&buf->reorder_timer,
723 entries[index].e.reorder_time +
724 1 + RX_REORDER_BUF_TIMEOUT_MQ);
725 }
726
727 out:
728 spin_unlock(&buf->lock);
729 }
730
iwl_mvm_del_ba(struct iwl_mvm * mvm,int queue,struct iwl_mvm_delba_data * data)731 static void iwl_mvm_del_ba(struct iwl_mvm *mvm, int queue,
732 struct iwl_mvm_delba_data *data)
733 {
734 struct iwl_mvm_baid_data *ba_data;
735 struct ieee80211_sta *sta;
736 struct iwl_mvm_reorder_buffer *reorder_buf;
737 u8 baid = data->baid;
738 u32 sta_id;
739
740 if (WARN_ONCE(baid >= IWL_MAX_BAID, "invalid BAID: %x\n", baid))
741 return;
742
743 rcu_read_lock();
744
745 ba_data = rcu_dereference(mvm->baid_map[baid]);
746 if (WARN_ON_ONCE(!ba_data))
747 goto out;
748
749 /* pick any STA ID to find the pointer */
750 sta_id = ffs(ba_data->sta_mask) - 1;
751 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
752 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
753 goto out;
754
755 reorder_buf = &ba_data->reorder_buf[queue];
756
757 /* release all frames that are in the reorder buffer to the stack */
758 spin_lock_bh(&reorder_buf->lock);
759 iwl_mvm_release_frames(mvm, sta, NULL, ba_data, reorder_buf,
760 ieee80211_sn_add(reorder_buf->head_sn,
761 reorder_buf->buf_size),
762 0);
763 spin_unlock_bh(&reorder_buf->lock);
764 del_timer_sync(&reorder_buf->reorder_timer);
765
766 out:
767 rcu_read_unlock();
768 }
769
iwl_mvm_release_frames_from_notif(struct iwl_mvm * mvm,struct napi_struct * napi,u8 baid,u16 nssn,int queue,u32 flags)770 static void iwl_mvm_release_frames_from_notif(struct iwl_mvm *mvm,
771 struct napi_struct *napi,
772 u8 baid, u16 nssn, int queue,
773 u32 flags)
774 {
775 struct ieee80211_sta *sta;
776 struct iwl_mvm_reorder_buffer *reorder_buf;
777 struct iwl_mvm_baid_data *ba_data;
778 u32 sta_id;
779
780 IWL_DEBUG_HT(mvm, "Frame release notification for BAID %u, NSSN %d\n",
781 baid, nssn);
782
783 if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID ||
784 baid >= ARRAY_SIZE(mvm->baid_map)))
785 return;
786
787 rcu_read_lock();
788
789 ba_data = rcu_dereference(mvm->baid_map[baid]);
790 if (!ba_data) {
791 WARN(!(flags & IWL_MVM_RELEASE_FROM_RSS_SYNC),
792 "BAID %d not found in map\n", baid);
793 goto out;
794 }
795
796 /* pick any STA ID to find the pointer */
797 sta_id = ffs(ba_data->sta_mask) - 1;
798 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
799 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
800 goto out;
801
802 reorder_buf = &ba_data->reorder_buf[queue];
803
804 spin_lock_bh(&reorder_buf->lock);
805 iwl_mvm_release_frames(mvm, sta, napi, ba_data,
806 reorder_buf, nssn, flags);
807 spin_unlock_bh(&reorder_buf->lock);
808
809 out:
810 rcu_read_unlock();
811 }
812
iwl_mvm_nssn_sync(struct iwl_mvm * mvm,struct napi_struct * napi,int queue,const struct iwl_mvm_nssn_sync_data * data)813 static void iwl_mvm_nssn_sync(struct iwl_mvm *mvm,
814 struct napi_struct *napi, int queue,
815 const struct iwl_mvm_nssn_sync_data *data)
816 {
817 iwl_mvm_release_frames_from_notif(mvm, napi, data->baid,
818 data->nssn, queue,
819 IWL_MVM_RELEASE_FROM_RSS_SYNC);
820 }
821
iwl_mvm_rx_queue_notif(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)822 void iwl_mvm_rx_queue_notif(struct iwl_mvm *mvm, struct napi_struct *napi,
823 struct iwl_rx_cmd_buffer *rxb, int queue)
824 {
825 struct iwl_rx_packet *pkt = rxb_addr(rxb);
826 struct iwl_rxq_sync_notification *notif;
827 struct iwl_mvm_internal_rxq_notif *internal_notif;
828 u32 len = iwl_rx_packet_payload_len(pkt);
829
830 notif = (void *)pkt->data;
831 internal_notif = (void *)notif->payload;
832
833 if (WARN_ONCE(len < sizeof(*notif) + sizeof(*internal_notif),
834 "invalid notification size %d (%d)",
835 len, (int)(sizeof(*notif) + sizeof(*internal_notif))))
836 return;
837 len -= sizeof(*notif) + sizeof(*internal_notif);
838
839 if (internal_notif->sync &&
840 mvm->queue_sync_cookie != internal_notif->cookie) {
841 WARN_ONCE(1, "Received expired RX queue sync message\n");
842 return;
843 }
844
845 switch (internal_notif->type) {
846 case IWL_MVM_RXQ_EMPTY:
847 WARN_ONCE(len, "invalid empty notification size %d", len);
848 break;
849 case IWL_MVM_RXQ_NOTIF_DEL_BA:
850 if (WARN_ONCE(len != sizeof(struct iwl_mvm_delba_data),
851 "invalid delba notification size %d (%d)",
852 len, (int)sizeof(struct iwl_mvm_delba_data)))
853 break;
854 iwl_mvm_del_ba(mvm, queue, (void *)internal_notif->data);
855 break;
856 case IWL_MVM_RXQ_NSSN_SYNC:
857 if (WARN_ONCE(len != sizeof(struct iwl_mvm_nssn_sync_data),
858 "invalid nssn sync notification size %d (%d)",
859 len, (int)sizeof(struct iwl_mvm_nssn_sync_data)))
860 break;
861 iwl_mvm_nssn_sync(mvm, napi, queue,
862 (void *)internal_notif->data);
863 break;
864 default:
865 WARN_ONCE(1, "Invalid identifier %d", internal_notif->type);
866 }
867
868 if (internal_notif->sync) {
869 WARN_ONCE(!test_and_clear_bit(queue, &mvm->queue_sync_state),
870 "queue sync: queue %d responded a second time!\n",
871 queue);
872 if (READ_ONCE(mvm->queue_sync_state) == 0)
873 wake_up(&mvm->rx_sync_waitq);
874 }
875 }
876
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)877 static void iwl_mvm_oldsn_workaround(struct iwl_mvm *mvm,
878 struct ieee80211_sta *sta, int tid,
879 struct iwl_mvm_reorder_buffer *buffer,
880 u32 reorder, u32 gp2, int queue)
881 {
882 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
883
884 if (gp2 != buffer->consec_oldsn_ampdu_gp2) {
885 /* we have a new (A-)MPDU ... */
886
887 /*
888 * reset counter to 0 if we didn't have any oldsn in
889 * the last A-MPDU (as detected by GP2 being identical)
890 */
891 if (!buffer->consec_oldsn_prev_drop)
892 buffer->consec_oldsn_drops = 0;
893
894 /* either way, update our tracking state */
895 buffer->consec_oldsn_ampdu_gp2 = gp2;
896 } else if (buffer->consec_oldsn_prev_drop) {
897 /*
898 * tracking state didn't change, and we had an old SN
899 * indication before - do nothing in this case, we
900 * already noted this one down and are waiting for the
901 * next A-MPDU (by GP2)
902 */
903 return;
904 }
905
906 /* return unless this MPDU has old SN */
907 if (!(reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN))
908 return;
909
910 /* update state */
911 buffer->consec_oldsn_prev_drop = 1;
912 buffer->consec_oldsn_drops++;
913
914 /* if limit is reached, send del BA and reset state */
915 if (buffer->consec_oldsn_drops == IWL_MVM_AMPDU_CONSEC_DROPS_DELBA) {
916 IWL_WARN(mvm,
917 "reached %d old SN frames from %pM on queue %d, stopping BA session on TID %d\n",
918 IWL_MVM_AMPDU_CONSEC_DROPS_DELBA,
919 sta->addr, queue, tid);
920 ieee80211_stop_rx_ba_session(mvmsta->vif, BIT(tid), sta->addr);
921 buffer->consec_oldsn_prev_drop = 0;
922 buffer->consec_oldsn_drops = 0;
923 }
924 }
925
926 /*
927 * Returns true if the MPDU was buffered\dropped, false if it should be passed
928 * to upper layer.
929 */
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)930 static bool iwl_mvm_reorder(struct iwl_mvm *mvm,
931 struct napi_struct *napi,
932 int queue,
933 struct ieee80211_sta *sta,
934 struct sk_buff *skb,
935 struct iwl_rx_mpdu_desc *desc)
936 {
937 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
938 struct ieee80211_hdr *hdr = (void *)skb_mac_header(skb);
939 struct iwl_mvm_baid_data *baid_data;
940 struct iwl_mvm_reorder_buffer *buffer;
941 struct sk_buff *tail;
942 u32 reorder = le32_to_cpu(desc->reorder_data);
943 bool amsdu = desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU;
944 bool last_subframe =
945 desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME;
946 u8 tid = ieee80211_get_tid(hdr);
947 u8 sub_frame_idx = desc->amsdu_info &
948 IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
949 struct iwl_mvm_reorder_buf_entry *entries;
950 u32 sta_mask;
951 int index;
952 u16 nssn, sn;
953 u8 baid;
954
955 baid = (reorder & IWL_RX_MPDU_REORDER_BAID_MASK) >>
956 IWL_RX_MPDU_REORDER_BAID_SHIFT;
957
958 if (mvm->trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_9000)
959 return false;
960
961 /*
962 * This also covers the case of receiving a Block Ack Request
963 * outside a BA session; we'll pass it to mac80211 and that
964 * then sends a delBA action frame.
965 * This also covers pure monitor mode, in which case we won't
966 * have any BA sessions.
967 */
968 if (baid == IWL_RX_REORDER_DATA_INVALID_BAID)
969 return false;
970
971 /* no sta yet */
972 if (WARN_ONCE(IS_ERR_OR_NULL(sta),
973 "Got valid BAID without a valid station assigned\n"))
974 return false;
975
976 /* not a data packet or a bar */
977 if (!ieee80211_is_back_req(hdr->frame_control) &&
978 (!ieee80211_is_data_qos(hdr->frame_control) ||
979 is_multicast_ether_addr(hdr->addr1)))
980 return false;
981
982 if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
983 return false;
984
985 baid_data = rcu_dereference(mvm->baid_map[baid]);
986 if (!baid_data) {
987 IWL_DEBUG_RX(mvm,
988 "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
989 baid, reorder);
990 return false;
991 }
992
993 rcu_read_lock();
994 sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1);
995 rcu_read_unlock();
996
997 if (IWL_FW_CHECK(mvm,
998 tid != baid_data->tid ||
999 !(sta_mask & baid_data->sta_mask),
1000 "baid 0x%x is mapped to sta_mask:0x%x tid:%d, but was received for sta_mask:0x%x tid:%d\n",
1001 baid, baid_data->sta_mask, baid_data->tid,
1002 sta_mask, tid))
1003 return false;
1004
1005 nssn = reorder & IWL_RX_MPDU_REORDER_NSSN_MASK;
1006 sn = (reorder & IWL_RX_MPDU_REORDER_SN_MASK) >>
1007 IWL_RX_MPDU_REORDER_SN_SHIFT;
1008
1009 buffer = &baid_data->reorder_buf[queue];
1010 entries = &baid_data->entries[queue * baid_data->entries_per_queue];
1011
1012 spin_lock_bh(&buffer->lock);
1013
1014 if (!buffer->valid) {
1015 if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN) {
1016 spin_unlock_bh(&buffer->lock);
1017 return false;
1018 }
1019 buffer->valid = true;
1020 }
1021
1022 if (ieee80211_is_back_req(hdr->frame_control)) {
1023 iwl_mvm_release_frames(mvm, sta, napi, baid_data,
1024 buffer, nssn, 0);
1025 goto drop;
1026 }
1027
1028 /*
1029 * If there was a significant jump in the nssn - adjust.
1030 * If the SN is smaller than the NSSN it might need to first go into
1031 * the reorder buffer, in which case we just release up to it and the
1032 * rest of the function will take care of storing it and releasing up to
1033 * the nssn.
1034 * This should not happen. This queue has been lagging and it should
1035 * have been updated by a IWL_MVM_RXQ_NSSN_SYNC notification. Be nice
1036 * and update the other queues.
1037 */
1038 if (!iwl_mvm_is_sn_less(nssn, buffer->head_sn + buffer->buf_size,
1039 buffer->buf_size) ||
1040 !ieee80211_sn_less(sn, buffer->head_sn + buffer->buf_size)) {
1041 u16 min_sn = ieee80211_sn_less(sn, nssn) ? sn : nssn;
1042
1043 iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer,
1044 min_sn, IWL_MVM_RELEASE_SEND_RSS_SYNC);
1045 }
1046
1047 iwl_mvm_oldsn_workaround(mvm, sta, tid, buffer, reorder,
1048 rx_status->device_timestamp, queue);
1049
1050 /* drop any oudated packets */
1051 if (ieee80211_sn_less(sn, buffer->head_sn))
1052 goto drop;
1053
1054 /* release immediately if allowed by nssn and no stored frames */
1055 if (!buffer->num_stored && ieee80211_sn_less(sn, nssn)) {
1056 if (iwl_mvm_is_sn_less(buffer->head_sn, nssn,
1057 buffer->buf_size) &&
1058 (!amsdu || last_subframe)) {
1059 /*
1060 * If we crossed the 2048 or 0 SN, notify all the
1061 * queues. This is done in order to avoid having a
1062 * head_sn that lags behind for too long. When that
1063 * happens, we can get to a situation where the head_sn
1064 * is within the interval [nssn - buf_size : nssn]
1065 * which will make us think that the nssn is a packet
1066 * that we already freed because of the reordering
1067 * buffer and we will ignore it. So maintain the
1068 * head_sn somewhat updated across all the queues:
1069 * when it crosses 0 and 2048.
1070 */
1071 if (sn == 2048 || sn == 0)
1072 iwl_mvm_sync_nssn(mvm, baid, sn);
1073 buffer->head_sn = nssn;
1074 }
1075 /* No need to update AMSDU last SN - we are moving the head */
1076 spin_unlock_bh(&buffer->lock);
1077 return false;
1078 }
1079
1080 /*
1081 * release immediately if there are no stored frames, and the sn is
1082 * equal to the head.
1083 * This can happen due to reorder timer, where NSSN is behind head_sn.
1084 * When we released everything, and we got the next frame in the
1085 * sequence, according to the NSSN we can't release immediately,
1086 * while technically there is no hole and we can move forward.
1087 */
1088 if (!buffer->num_stored && sn == buffer->head_sn) {
1089 if (!amsdu || last_subframe) {
1090 if (sn == 2048 || sn == 0)
1091 iwl_mvm_sync_nssn(mvm, baid, sn);
1092 buffer->head_sn = ieee80211_sn_inc(buffer->head_sn);
1093 }
1094 /* No need to update AMSDU last SN - we are moving the head */
1095 spin_unlock_bh(&buffer->lock);
1096 return false;
1097 }
1098
1099 index = sn % buffer->buf_size;
1100
1101 /*
1102 * Check if we already stored this frame
1103 * As AMSDU is either received or not as whole, logic is simple:
1104 * If we have frames in that position in the buffer and the last frame
1105 * originated from AMSDU had a different SN then it is a retransmission.
1106 * If it is the same SN then if the subframe index is incrementing it
1107 * is the same AMSDU - otherwise it is a retransmission.
1108 */
1109 tail = skb_peek_tail(&entries[index].e.frames);
1110 if (tail && !amsdu)
1111 goto drop;
1112 else if (tail && (sn != buffer->last_amsdu ||
1113 buffer->last_sub_index >= sub_frame_idx))
1114 goto drop;
1115
1116 /* put in reorder buffer */
1117 __skb_queue_tail(&entries[index].e.frames, skb);
1118 buffer->num_stored++;
1119 entries[index].e.reorder_time = jiffies;
1120
1121 if (amsdu) {
1122 buffer->last_amsdu = sn;
1123 buffer->last_sub_index = sub_frame_idx;
1124 }
1125
1126 /*
1127 * We cannot trust NSSN for AMSDU sub-frames that are not the last.
1128 * The reason is that NSSN advances on the first sub-frame, and may
1129 * cause the reorder buffer to advance before all the sub-frames arrive.
1130 * Example: reorder buffer contains SN 0 & 2, and we receive AMSDU with
1131 * SN 1. NSSN for first sub frame will be 3 with the result of driver
1132 * releasing SN 0,1, 2. When sub-frame 1 arrives - reorder buffer is
1133 * already ahead and it will be dropped.
1134 * If the last sub-frame is not on this queue - we will get frame
1135 * release notification with up to date NSSN.
1136 */
1137 if (!amsdu || last_subframe)
1138 iwl_mvm_release_frames(mvm, sta, napi, baid_data,
1139 buffer, nssn,
1140 IWL_MVM_RELEASE_SEND_RSS_SYNC);
1141
1142 spin_unlock_bh(&buffer->lock);
1143 return true;
1144
1145 drop:
1146 kfree_skb(skb);
1147 spin_unlock_bh(&buffer->lock);
1148 return true;
1149 }
1150
iwl_mvm_agg_rx_received(struct iwl_mvm * mvm,u32 reorder_data,u8 baid)1151 static void iwl_mvm_agg_rx_received(struct iwl_mvm *mvm,
1152 u32 reorder_data, u8 baid)
1153 {
1154 unsigned long now = jiffies;
1155 unsigned long timeout;
1156 struct iwl_mvm_baid_data *data;
1157
1158 rcu_read_lock();
1159
1160 data = rcu_dereference(mvm->baid_map[baid]);
1161 if (!data) {
1162 IWL_DEBUG_RX(mvm,
1163 "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
1164 baid, reorder_data);
1165 goto out;
1166 }
1167
1168 if (!data->timeout)
1169 goto out;
1170
1171 timeout = data->timeout;
1172 /*
1173 * Do not update last rx all the time to avoid cache bouncing
1174 * between the rx queues.
1175 * Update it every timeout. Worst case is the session will
1176 * expire after ~ 2 * timeout, which doesn't matter that much.
1177 */
1178 if (time_before(data->last_rx + TU_TO_JIFFIES(timeout), now))
1179 /* Update is atomic */
1180 data->last_rx = now;
1181
1182 out:
1183 rcu_read_unlock();
1184 }
1185
iwl_mvm_flip_address(u8 * addr)1186 static void iwl_mvm_flip_address(u8 *addr)
1187 {
1188 int i;
1189 u8 mac_addr[ETH_ALEN];
1190
1191 for (i = 0; i < ETH_ALEN; i++)
1192 mac_addr[i] = addr[ETH_ALEN - i - 1];
1193 ether_addr_copy(addr, mac_addr);
1194 }
1195
1196 struct iwl_mvm_rx_phy_data {
1197 enum iwl_rx_phy_info_type info_type;
1198 __le32 d0, d1, d2, d3, eht_d4, d5;
1199 __le16 d4;
1200 bool with_data;
1201 bool first_subframe;
1202 __le32 rx_vec[4];
1203
1204 u32 rate_n_flags;
1205 u32 gp2_on_air_rise;
1206 u16 phy_info;
1207 u8 energy_a, energy_b;
1208 u8 channel;
1209 };
1210
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)1211 static void iwl_mvm_decode_he_mu_ext(struct iwl_mvm *mvm,
1212 struct iwl_mvm_rx_phy_data *phy_data,
1213 struct ieee80211_radiotap_he_mu *he_mu)
1214 {
1215 u32 phy_data2 = le32_to_cpu(phy_data->d2);
1216 u32 phy_data3 = le32_to_cpu(phy_data->d3);
1217 u16 phy_data4 = le16_to_cpu(phy_data->d4);
1218 u32 rate_n_flags = phy_data->rate_n_flags;
1219
1220 if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CRC_OK, phy_data4)) {
1221 he_mu->flags1 |=
1222 cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_RU_KNOWN |
1223 IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU_KNOWN);
1224
1225 he_mu->flags1 |=
1226 le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CTR_RU,
1227 phy_data4),
1228 IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU);
1229
1230 he_mu->ru_ch1[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU0,
1231 phy_data2);
1232 he_mu->ru_ch1[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU1,
1233 phy_data3);
1234 he_mu->ru_ch1[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU2,
1235 phy_data2);
1236 he_mu->ru_ch1[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU3,
1237 phy_data3);
1238 }
1239
1240 if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CRC_OK, phy_data4) &&
1241 (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) != RATE_MCS_CHAN_WIDTH_20) {
1242 he_mu->flags1 |=
1243 cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_RU_KNOWN |
1244 IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_CTR_26T_RU_KNOWN);
1245
1246 he_mu->flags2 |=
1247 le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CTR_RU,
1248 phy_data4),
1249 IEEE80211_RADIOTAP_HE_MU_FLAGS2_CH2_CTR_26T_RU);
1250
1251 he_mu->ru_ch2[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU0,
1252 phy_data2);
1253 he_mu->ru_ch2[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU1,
1254 phy_data3);
1255 he_mu->ru_ch2[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU2,
1256 phy_data2);
1257 he_mu->ru_ch2[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU3,
1258 phy_data3);
1259 }
1260 }
1261
1262 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)1263 iwl_mvm_decode_he_phy_ru_alloc(struct iwl_mvm_rx_phy_data *phy_data,
1264 struct ieee80211_radiotap_he *he,
1265 struct ieee80211_radiotap_he_mu *he_mu,
1266 struct ieee80211_rx_status *rx_status)
1267 {
1268 /*
1269 * Unfortunately, we have to leave the mac80211 data
1270 * incorrect for the case that we receive an HE-MU
1271 * transmission and *don't* have the HE phy data (due
1272 * to the bits being used for TSF). This shouldn't
1273 * happen though as management frames where we need
1274 * the TSF/timers are not be transmitted in HE-MU.
1275 */
1276 u8 ru = le32_get_bits(phy_data->d1, IWL_RX_PHY_DATA1_HE_RU_ALLOC_MASK);
1277 u32 rate_n_flags = phy_data->rate_n_flags;
1278 u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK_V1;
1279 u8 offs = 0;
1280
1281 rx_status->bw = RATE_INFO_BW_HE_RU;
1282
1283 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
1284
1285 switch (ru) {
1286 case 0 ... 36:
1287 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26;
1288 offs = ru;
1289 break;
1290 case 37 ... 52:
1291 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52;
1292 offs = ru - 37;
1293 break;
1294 case 53 ... 60:
1295 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
1296 offs = ru - 53;
1297 break;
1298 case 61 ... 64:
1299 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242;
1300 offs = ru - 61;
1301 break;
1302 case 65 ... 66:
1303 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484;
1304 offs = ru - 65;
1305 break;
1306 case 67:
1307 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996;
1308 break;
1309 case 68:
1310 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996;
1311 break;
1312 }
1313 he->data2 |= le16_encode_bits(offs,
1314 IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET);
1315 he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_KNOWN |
1316 IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET_KNOWN);
1317 if (phy_data->d1 & cpu_to_le32(IWL_RX_PHY_DATA1_HE_RU_ALLOC_SEC80))
1318 he->data2 |=
1319 cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_SEC);
1320
1321 #define CHECK_BW(bw) \
1322 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_ ## bw ## MHZ != \
1323 RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS); \
1324 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_ ## bw ## MHZ != \
1325 RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS)
1326 CHECK_BW(20);
1327 CHECK_BW(40);
1328 CHECK_BW(80);
1329 CHECK_BW(160);
1330
1331 if (he_mu)
1332 he_mu->flags2 |=
1333 le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK_V1,
1334 rate_n_flags),
1335 IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW);
1336 else if (he_type == RATE_MCS_HE_TYPE_TRIG_V1)
1337 he->data6 |=
1338 cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_KNOWN) |
1339 le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK_V1,
1340 rate_n_flags),
1341 IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW);
1342 }
1343
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)1344 static void iwl_mvm_decode_he_phy_data(struct iwl_mvm *mvm,
1345 struct iwl_mvm_rx_phy_data *phy_data,
1346 struct ieee80211_radiotap_he *he,
1347 struct ieee80211_radiotap_he_mu *he_mu,
1348 struct ieee80211_rx_status *rx_status,
1349 int queue)
1350 {
1351 switch (phy_data->info_type) {
1352 case IWL_RX_PHY_INFO_TYPE_NONE:
1353 case IWL_RX_PHY_INFO_TYPE_CCK:
1354 case IWL_RX_PHY_INFO_TYPE_OFDM_LGCY:
1355 case IWL_RX_PHY_INFO_TYPE_HT:
1356 case IWL_RX_PHY_INFO_TYPE_VHT_SU:
1357 case IWL_RX_PHY_INFO_TYPE_VHT_MU:
1358 case IWL_RX_PHY_INFO_TYPE_EHT_MU:
1359 case IWL_RX_PHY_INFO_TYPE_EHT_TB:
1360 case IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT:
1361 case IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT:
1362 return;
1363 case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1364 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN |
1365 IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE2_KNOWN |
1366 IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE3_KNOWN |
1367 IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE4_KNOWN);
1368 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1369 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE1),
1370 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE1);
1371 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1372 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE2),
1373 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE2);
1374 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1375 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE3),
1376 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE3);
1377 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1378 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE4),
1379 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE4);
1380 fallthrough;
1381 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1382 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1383 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1384 case IWL_RX_PHY_INFO_TYPE_HE_TB:
1385 /* HE common */
1386 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_LDPC_XSYMSEG_KNOWN |
1387 IEEE80211_RADIOTAP_HE_DATA1_DOPPLER_KNOWN |
1388 IEEE80211_RADIOTAP_HE_DATA1_BSS_COLOR_KNOWN);
1389 he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRE_FEC_PAD_KNOWN |
1390 IEEE80211_RADIOTAP_HE_DATA2_PE_DISAMBIG_KNOWN |
1391 IEEE80211_RADIOTAP_HE_DATA2_TXOP_KNOWN |
1392 IEEE80211_RADIOTAP_HE_DATA2_NUM_LTF_SYMS_KNOWN);
1393 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1394 IWL_RX_PHY_DATA0_HE_BSS_COLOR_MASK),
1395 IEEE80211_RADIOTAP_HE_DATA3_BSS_COLOR);
1396 if (phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB &&
1397 phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB_EXT) {
1398 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_UL_DL_KNOWN);
1399 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1400 IWL_RX_PHY_DATA0_HE_UPLINK),
1401 IEEE80211_RADIOTAP_HE_DATA3_UL_DL);
1402 }
1403 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1404 IWL_RX_PHY_DATA0_HE_LDPC_EXT_SYM),
1405 IEEE80211_RADIOTAP_HE_DATA3_LDPC_XSYMSEG);
1406 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1407 IWL_RX_PHY_DATA0_HE_PRE_FEC_PAD_MASK),
1408 IEEE80211_RADIOTAP_HE_DATA5_PRE_FEC_PAD);
1409 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1410 IWL_RX_PHY_DATA0_HE_PE_DISAMBIG),
1411 IEEE80211_RADIOTAP_HE_DATA5_PE_DISAMBIG);
1412 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d1,
1413 IWL_RX_PHY_DATA1_HE_LTF_NUM_MASK),
1414 IEEE80211_RADIOTAP_HE_DATA5_NUM_LTF_SYMS);
1415 he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1416 IWL_RX_PHY_DATA0_HE_TXOP_DUR_MASK),
1417 IEEE80211_RADIOTAP_HE_DATA6_TXOP);
1418 he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1419 IWL_RX_PHY_DATA0_HE_DOPPLER),
1420 IEEE80211_RADIOTAP_HE_DATA6_DOPPLER);
1421 break;
1422 }
1423
1424 switch (phy_data->info_type) {
1425 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1426 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1427 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1428 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN);
1429 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1430 IWL_RX_PHY_DATA0_HE_SPATIAL_REUSE_MASK),
1431 IEEE80211_RADIOTAP_HE_DATA4_SU_MU_SPTL_REUSE);
1432 break;
1433 default:
1434 /* nothing here */
1435 break;
1436 }
1437
1438 switch (phy_data->info_type) {
1439 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1440 he_mu->flags1 |=
1441 le16_encode_bits(le16_get_bits(phy_data->d4,
1442 IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_DCM),
1443 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM);
1444 he_mu->flags1 |=
1445 le16_encode_bits(le16_get_bits(phy_data->d4,
1446 IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_MCS_MASK),
1447 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS);
1448 he_mu->flags2 |=
1449 le16_encode_bits(le16_get_bits(phy_data->d4,
1450 IWL_RX_PHY_DATA4_HE_MU_EXT_PREAMBLE_PUNC_TYPE_MASK),
1451 IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW);
1452 iwl_mvm_decode_he_mu_ext(mvm, phy_data, he_mu);
1453 fallthrough;
1454 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1455 he_mu->flags2 |=
1456 le16_encode_bits(le32_get_bits(phy_data->d1,
1457 IWL_RX_PHY_DATA1_HE_MU_SIBG_SYM_OR_USER_NUM_MASK),
1458 IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_SYMS_USERS);
1459 he_mu->flags2 |=
1460 le16_encode_bits(le32_get_bits(phy_data->d1,
1461 IWL_RX_PHY_DATA1_HE_MU_SIGB_COMPRESSION),
1462 IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_COMP);
1463 fallthrough;
1464 case IWL_RX_PHY_INFO_TYPE_HE_TB:
1465 case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1466 iwl_mvm_decode_he_phy_ru_alloc(phy_data, he, he_mu, rx_status);
1467 break;
1468 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1469 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BEAM_CHANGE_KNOWN);
1470 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1471 IWL_RX_PHY_DATA0_HE_BEAM_CHNG),
1472 IEEE80211_RADIOTAP_HE_DATA3_BEAM_CHANGE);
1473 break;
1474 default:
1475 /* nothing */
1476 break;
1477 }
1478 }
1479
1480 #define LE32_DEC_ENC(value, dec_bits, enc_bits) \
1481 le32_encode_bits(le32_get_bits(value, dec_bits), enc_bits)
1482
1483 #define IWL_MVM_ENC_USIG_VALUE_MASK(usig, in_value, dec_bits, enc_bits) do { \
1484 typeof(enc_bits) _enc_bits = enc_bits; \
1485 typeof(usig) _usig = usig; \
1486 (_usig)->mask |= cpu_to_le32(_enc_bits); \
1487 (_usig)->value |= LE32_DEC_ENC(in_value, dec_bits, _enc_bits); \
1488 } while (0)
1489
1490 #define __IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru) \
1491 eht->data[(rt_data)] |= \
1492 (cpu_to_le32 \
1493 (IEEE80211_RADIOTAP_EHT_DATA ## rt_data ## _RU_ALLOC_CC_ ## rt_ru ## _KNOWN) | \
1494 LE32_DEC_ENC(data ## fw_data, \
1495 IWL_RX_PHY_DATA ## fw_data ## _EHT_MU_EXT_RU_ALLOC_ ## fw_ru, \
1496 IEEE80211_RADIOTAP_EHT_DATA ## rt_data ## _RU_ALLOC_CC_ ## rt_ru))
1497
1498 #define _IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru) \
1499 __IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru)
1500
1501 #define IEEE80211_RADIOTAP_RU_DATA_1_1_1 1
1502 #define IEEE80211_RADIOTAP_RU_DATA_2_1_1 2
1503 #define IEEE80211_RADIOTAP_RU_DATA_1_1_2 2
1504 #define IEEE80211_RADIOTAP_RU_DATA_2_1_2 2
1505 #define IEEE80211_RADIOTAP_RU_DATA_1_2_1 3
1506 #define IEEE80211_RADIOTAP_RU_DATA_2_2_1 3
1507 #define IEEE80211_RADIOTAP_RU_DATA_1_2_2 3
1508 #define IEEE80211_RADIOTAP_RU_DATA_2_2_2 4
1509
1510 #define IWL_RX_RU_DATA_A1 2
1511 #define IWL_RX_RU_DATA_A2 2
1512 #define IWL_RX_RU_DATA_B1 2
1513 #define IWL_RX_RU_DATA_B2 3
1514 #define IWL_RX_RU_DATA_C1 3
1515 #define IWL_RX_RU_DATA_C2 3
1516 #define IWL_RX_RU_DATA_D1 4
1517 #define IWL_RX_RU_DATA_D2 4
1518
1519 #define IWL_MVM_ENC_EHT_RU(rt_ru, fw_ru) \
1520 _IWL_MVM_ENC_EHT_RU(IEEE80211_RADIOTAP_RU_DATA_ ## rt_ru, \
1521 rt_ru, \
1522 IWL_RX_RU_DATA_ ## fw_ru, \
1523 fw_ru)
1524
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)1525 static void iwl_mvm_decode_eht_ext_mu(struct iwl_mvm *mvm,
1526 struct iwl_mvm_rx_phy_data *phy_data,
1527 struct ieee80211_rx_status *rx_status,
1528 struct ieee80211_radiotap_eht *eht,
1529 struct ieee80211_radiotap_eht_usig *usig)
1530 {
1531 if (phy_data->with_data) {
1532 __le32 data1 = phy_data->d1;
1533 __le32 data2 = phy_data->d2;
1534 __le32 data3 = phy_data->d3;
1535 __le32 data4 = phy_data->eht_d4;
1536 __le32 data5 = phy_data->d5;
1537 u32 phy_bw = phy_data->rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK;
1538
1539 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1540 IWL_RX_PHY_DATA5_EHT_TYPE_AND_COMP,
1541 IEEE80211_RADIOTAP_EHT_USIG2_MU_B0_B1_PPDU_TYPE);
1542 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1543 IWL_RX_PHY_DATA5_EHT_MU_PUNC_CH_CODE,
1544 IEEE80211_RADIOTAP_EHT_USIG2_MU_B3_B7_PUNCTURED_INFO);
1545 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data4,
1546 IWL_RX_PHY_DATA4_EHT_MU_EXT_SIGB_MCS,
1547 IEEE80211_RADIOTAP_EHT_USIG2_MU_B9_B10_SIG_MCS);
1548 IWL_MVM_ENC_USIG_VALUE_MASK
1549 (usig, data1, IWL_RX_PHY_DATA1_EHT_MU_NUM_SIG_SYM_USIGA2,
1550 IEEE80211_RADIOTAP_EHT_USIG2_MU_B11_B15_EHT_SIG_SYMBOLS);
1551
1552 eht->user_info[0] |=
1553 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_STA_ID_KNOWN) |
1554 LE32_DEC_ENC(data5, IWL_RX_PHY_DATA5_EHT_MU_STA_ID_USR,
1555 IEEE80211_RADIOTAP_EHT_USER_INFO_STA_ID);
1556
1557 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_NR_NON_OFDMA_USERS_M);
1558 eht->data[7] |= LE32_DEC_ENC
1559 (data5, IWL_RX_PHY_DATA5_EHT_MU_NUM_USR_NON_OFDMA,
1560 IEEE80211_RADIOTAP_EHT_DATA7_NUM_OF_NON_OFDMA_USERS);
1561
1562 /*
1563 * Hardware labels the content channels/RU allocation values
1564 * as follows:
1565 * Content Channel 1 Content Channel 2
1566 * 20 MHz: A1
1567 * 40 MHz: A1 B1
1568 * 80 MHz: A1 C1 B1 D1
1569 * 160 MHz: A1 C1 A2 C2 B1 D1 B2 D2
1570 * 320 MHz: A1 C1 A2 C2 A3 C3 A4 C4 B1 D1 B2 D2 B3 D3 B4 D4
1571 *
1572 * However firmware can only give us A1-D2, so the higher
1573 * frequencies are missing.
1574 */
1575
1576 switch (phy_bw) {
1577 case RATE_MCS_CHAN_WIDTH_320:
1578 /* additional values are missing in RX metadata */
1579 case RATE_MCS_CHAN_WIDTH_160:
1580 /* content channel 1 */
1581 IWL_MVM_ENC_EHT_RU(1_2_1, A2);
1582 IWL_MVM_ENC_EHT_RU(1_2_2, C2);
1583 /* content channel 2 */
1584 IWL_MVM_ENC_EHT_RU(2_2_1, B2);
1585 IWL_MVM_ENC_EHT_RU(2_2_2, D2);
1586 fallthrough;
1587 case RATE_MCS_CHAN_WIDTH_80:
1588 /* content channel 1 */
1589 IWL_MVM_ENC_EHT_RU(1_1_2, C1);
1590 /* content channel 2 */
1591 IWL_MVM_ENC_EHT_RU(2_1_2, D1);
1592 fallthrough;
1593 case RATE_MCS_CHAN_WIDTH_40:
1594 /* content channel 2 */
1595 IWL_MVM_ENC_EHT_RU(2_1_1, B1);
1596 fallthrough;
1597 case RATE_MCS_CHAN_WIDTH_20:
1598 IWL_MVM_ENC_EHT_RU(1_1_1, A1);
1599 break;
1600 }
1601 } else {
1602 __le32 usig_a1 = phy_data->rx_vec[0];
1603 __le32 usig_a2 = phy_data->rx_vec[1];
1604
1605 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
1606 IWL_RX_USIG_A1_DISREGARD,
1607 IEEE80211_RADIOTAP_EHT_USIG1_MU_B20_B24_DISREGARD);
1608 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
1609 IWL_RX_USIG_A1_VALIDATE,
1610 IEEE80211_RADIOTAP_EHT_USIG1_MU_B25_VALIDATE);
1611 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1612 IWL_RX_USIG_A2_EHT_PPDU_TYPE,
1613 IEEE80211_RADIOTAP_EHT_USIG2_MU_B0_B1_PPDU_TYPE);
1614 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1615 IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B2,
1616 IEEE80211_RADIOTAP_EHT_USIG2_MU_B2_VALIDATE);
1617 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1618 IWL_RX_USIG_A2_EHT_PUNC_CHANNEL,
1619 IEEE80211_RADIOTAP_EHT_USIG2_MU_B3_B7_PUNCTURED_INFO);
1620 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1621 IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B8,
1622 IEEE80211_RADIOTAP_EHT_USIG2_MU_B8_VALIDATE);
1623 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1624 IWL_RX_USIG_A2_EHT_SIG_MCS,
1625 IEEE80211_RADIOTAP_EHT_USIG2_MU_B9_B10_SIG_MCS);
1626 IWL_MVM_ENC_USIG_VALUE_MASK
1627 (usig, usig_a2, IWL_RX_USIG_A2_EHT_SIG_SYM_NUM,
1628 IEEE80211_RADIOTAP_EHT_USIG2_MU_B11_B15_EHT_SIG_SYMBOLS);
1629 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1630 IWL_RX_USIG_A2_EHT_CRC_OK,
1631 IEEE80211_RADIOTAP_EHT_USIG2_MU_B16_B19_CRC);
1632 }
1633 }
1634
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)1635 static void iwl_mvm_decode_eht_ext_tb(struct iwl_mvm *mvm,
1636 struct iwl_mvm_rx_phy_data *phy_data,
1637 struct ieee80211_rx_status *rx_status,
1638 struct ieee80211_radiotap_eht *eht,
1639 struct ieee80211_radiotap_eht_usig *usig)
1640 {
1641 if (phy_data->with_data) {
1642 __le32 data5 = phy_data->d5;
1643
1644 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1645 IWL_RX_PHY_DATA5_EHT_TYPE_AND_COMP,
1646 IEEE80211_RADIOTAP_EHT_USIG2_TB_B0_B1_PPDU_TYPE);
1647 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1648 IWL_RX_PHY_DATA5_EHT_TB_SPATIAL_REUSE1,
1649 IEEE80211_RADIOTAP_EHT_USIG2_TB_B3_B6_SPATIAL_REUSE_1);
1650
1651 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1652 IWL_RX_PHY_DATA5_EHT_TB_SPATIAL_REUSE2,
1653 IEEE80211_RADIOTAP_EHT_USIG2_TB_B7_B10_SPATIAL_REUSE_2);
1654 } else {
1655 __le32 usig_a1 = phy_data->rx_vec[0];
1656 __le32 usig_a2 = phy_data->rx_vec[1];
1657
1658 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
1659 IWL_RX_USIG_A1_DISREGARD,
1660 IEEE80211_RADIOTAP_EHT_USIG1_TB_B20_B25_DISREGARD);
1661 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1662 IWL_RX_USIG_A2_EHT_PPDU_TYPE,
1663 IEEE80211_RADIOTAP_EHT_USIG2_TB_B0_B1_PPDU_TYPE);
1664 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1665 IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B2,
1666 IEEE80211_RADIOTAP_EHT_USIG2_TB_B2_VALIDATE);
1667 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1668 IWL_RX_USIG_A2_EHT_TRIG_SPATIAL_REUSE_1,
1669 IEEE80211_RADIOTAP_EHT_USIG2_TB_B3_B6_SPATIAL_REUSE_1);
1670 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1671 IWL_RX_USIG_A2_EHT_TRIG_SPATIAL_REUSE_2,
1672 IEEE80211_RADIOTAP_EHT_USIG2_TB_B7_B10_SPATIAL_REUSE_2);
1673 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1674 IWL_RX_USIG_A2_EHT_TRIG_USIG2_DISREGARD,
1675 IEEE80211_RADIOTAP_EHT_USIG2_TB_B11_B15_DISREGARD);
1676 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1677 IWL_RX_USIG_A2_EHT_CRC_OK,
1678 IEEE80211_RADIOTAP_EHT_USIG2_TB_B16_B19_CRC);
1679 }
1680 }
1681
iwl_mvm_decode_eht_ru(struct iwl_mvm * mvm,struct ieee80211_rx_status * rx_status,struct ieee80211_radiotap_eht * eht)1682 static void iwl_mvm_decode_eht_ru(struct iwl_mvm *mvm,
1683 struct ieee80211_rx_status *rx_status,
1684 struct ieee80211_radiotap_eht *eht)
1685 {
1686 u32 ru = le32_get_bits(eht->data[8],
1687 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B7_B1);
1688 enum nl80211_eht_ru_alloc nl_ru;
1689
1690 /* Using D1.5 Table 9-53a - Encoding of PS160 and RU Allocation subfields
1691 * in an EHT variant User Info field
1692 */
1693
1694 switch (ru) {
1695 case 0 ... 36:
1696 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_26;
1697 break;
1698 case 37 ... 52:
1699 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_52;
1700 break;
1701 case 53 ... 60:
1702 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_106;
1703 break;
1704 case 61 ... 64:
1705 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_242;
1706 break;
1707 case 65 ... 66:
1708 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_484;
1709 break;
1710 case 67:
1711 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996;
1712 break;
1713 case 68:
1714 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_2x996;
1715 break;
1716 case 69:
1717 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_4x996;
1718 break;
1719 case 70 ... 81:
1720 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_52P26;
1721 break;
1722 case 82 ... 89:
1723 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_106P26;
1724 break;
1725 case 90 ... 93:
1726 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_484P242;
1727 break;
1728 case 94 ... 95:
1729 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996P484;
1730 break;
1731 case 96 ... 99:
1732 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996P484P242;
1733 break;
1734 case 100 ... 103:
1735 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_2x996P484;
1736 break;
1737 case 104:
1738 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_3x996;
1739 break;
1740 case 105 ... 106:
1741 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_3x996P484;
1742 break;
1743 default:
1744 return;
1745 }
1746
1747 rx_status->bw = RATE_INFO_BW_EHT_RU;
1748 rx_status->eht.ru = nl_ru;
1749 }
1750
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)1751 static void iwl_mvm_decode_eht_phy_data(struct iwl_mvm *mvm,
1752 struct iwl_mvm_rx_phy_data *phy_data,
1753 struct ieee80211_rx_status *rx_status,
1754 struct ieee80211_radiotap_eht *eht,
1755 struct ieee80211_radiotap_eht_usig *usig)
1756
1757 {
1758 __le32 data0 = phy_data->d0;
1759 __le32 data1 = phy_data->d1;
1760 __le32 usig_a1 = phy_data->rx_vec[0];
1761 u8 info_type = phy_data->info_type;
1762
1763 /* Not in EHT range */
1764 if (info_type < IWL_RX_PHY_INFO_TYPE_EHT_MU ||
1765 info_type > IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT)
1766 return;
1767
1768 usig->common |= cpu_to_le32
1769 (IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL_KNOWN |
1770 IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR_KNOWN);
1771 if (phy_data->with_data) {
1772 usig->common |= LE32_DEC_ENC(data0,
1773 IWL_RX_PHY_DATA0_EHT_UPLINK,
1774 IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL);
1775 usig->common |= LE32_DEC_ENC(data0,
1776 IWL_RX_PHY_DATA0_EHT_BSS_COLOR_MASK,
1777 IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR);
1778 } else {
1779 usig->common |= LE32_DEC_ENC(usig_a1,
1780 IWL_RX_USIG_A1_UL_FLAG,
1781 IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL);
1782 usig->common |= LE32_DEC_ENC(usig_a1,
1783 IWL_RX_USIG_A1_BSS_COLOR,
1784 IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR);
1785 }
1786
1787 if (fw_has_capa(&mvm->fw->ucode_capa,
1788 IWL_UCODE_TLV_CAPA_SNIFF_VALIDATE_SUPPORT)) {
1789 usig->common |=
1790 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_VALIDATE_BITS_CHECKED);
1791 usig->common |=
1792 LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_VALIDATE,
1793 IEEE80211_RADIOTAP_EHT_USIG_COMMON_VALIDATE_BITS_OK);
1794 }
1795
1796 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_SPATIAL_REUSE);
1797 eht->data[0] |= LE32_DEC_ENC(data0,
1798 IWL_RX_PHY_DATA0_ETH_SPATIAL_REUSE_MASK,
1799 IEEE80211_RADIOTAP_EHT_DATA0_SPATIAL_REUSE);
1800
1801 /* All RU allocating size/index is in TB format */
1802 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_RU_ALLOC_TB_FMT);
1803 eht->data[8] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PS160,
1804 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_PS_160);
1805 eht->data[8] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_RU_ALLOC_B0,
1806 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B0);
1807 eht->data[8] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_RU_ALLOC_B1_B7,
1808 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B7_B1);
1809
1810 iwl_mvm_decode_eht_ru(mvm, rx_status, eht);
1811
1812 /* We only get here in case of IWL_RX_MPDU_PHY_TSF_OVERLOAD is set
1813 * which is on only in case of monitor mode so no need to check monitor
1814 * mode
1815 */
1816 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PRIMARY_80);
1817 eht->data[1] |=
1818 le32_encode_bits(mvm->monitor_p80,
1819 IEEE80211_RADIOTAP_EHT_DATA1_PRIMARY_80);
1820
1821 usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP_KNOWN);
1822 if (phy_data->with_data)
1823 usig->common |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_TXOP_DUR_MASK,
1824 IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP);
1825 else
1826 usig->common |= LE32_DEC_ENC(usig_a1, IWL_RX_USIG_A1_TXOP_DURATION,
1827 IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP);
1828
1829 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_LDPC_EXTRA_SYM_OM);
1830 eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_LDPC_EXT_SYM,
1831 IEEE80211_RADIOTAP_EHT_DATA0_LDPC_EXTRA_SYM_OM);
1832
1833 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PRE_PADD_FACOR_OM);
1834 eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PRE_FEC_PAD_MASK,
1835 IEEE80211_RADIOTAP_EHT_DATA0_PRE_PADD_FACOR_OM);
1836
1837 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PE_DISAMBIGUITY_OM);
1838 eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PE_DISAMBIG,
1839 IEEE80211_RADIOTAP_EHT_DATA0_PE_DISAMBIGUITY_OM);
1840
1841 /* TODO: what about IWL_RX_PHY_DATA0_EHT_BW320_SLOT */
1842
1843 if (!le32_get_bits(data0, IWL_RX_PHY_DATA0_EHT_SIGA_CRC_OK))
1844 usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BAD_USIG_CRC);
1845
1846 usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_PHY_VER_KNOWN);
1847 usig->common |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PHY_VER,
1848 IEEE80211_RADIOTAP_EHT_USIG_COMMON_PHY_VER);
1849
1850 /*
1851 * TODO: what about TB - IWL_RX_PHY_DATA1_EHT_TB_PILOT_TYPE,
1852 * IWL_RX_PHY_DATA1_EHT_TB_LOW_SS
1853 */
1854
1855 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_EHT_LTF);
1856 eht->data[0] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_SIG_LTF_NUM,
1857 IEEE80211_RADIOTAP_EHT_DATA0_EHT_LTF);
1858
1859 if (info_type == IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT ||
1860 info_type == IWL_RX_PHY_INFO_TYPE_EHT_TB)
1861 iwl_mvm_decode_eht_ext_tb(mvm, phy_data, rx_status, eht, usig);
1862
1863 if (info_type == IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT ||
1864 info_type == IWL_RX_PHY_INFO_TYPE_EHT_MU)
1865 iwl_mvm_decode_eht_ext_mu(mvm, phy_data, rx_status, eht, usig);
1866 }
1867
iwl_mvm_rx_eht(struct iwl_mvm * mvm,struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data,int queue)1868 static void iwl_mvm_rx_eht(struct iwl_mvm *mvm, struct sk_buff *skb,
1869 struct iwl_mvm_rx_phy_data *phy_data,
1870 int queue)
1871 {
1872 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1873
1874 struct ieee80211_radiotap_eht *eht;
1875 struct ieee80211_radiotap_eht_usig *usig;
1876 size_t eht_len = sizeof(*eht);
1877
1878 u32 rate_n_flags = phy_data->rate_n_flags;
1879 u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1880 /* EHT and HE have the same valus for LTF */
1881 u8 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN;
1882 u16 phy_info = phy_data->phy_info;
1883 u32 bw;
1884
1885 /* u32 for 1 user_info */
1886 if (phy_data->with_data)
1887 eht_len += sizeof(u32);
1888
1889 eht = iwl_mvm_radiotap_put_tlv(skb, IEEE80211_RADIOTAP_EHT, eht_len);
1890
1891 usig = iwl_mvm_radiotap_put_tlv(skb, IEEE80211_RADIOTAP_EHT_USIG,
1892 sizeof(*usig));
1893 rx_status->flag |= RX_FLAG_RADIOTAP_TLV_AT_END;
1894 usig->common |=
1895 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BW_KNOWN);
1896
1897 /* specific handling for 320MHz */
1898 bw = FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK, rate_n_flags);
1899 if (bw == RATE_MCS_CHAN_WIDTH_320_VAL)
1900 bw += FIELD_GET(IWL_RX_PHY_DATA0_EHT_BW320_SLOT,
1901 le32_to_cpu(phy_data->d0));
1902
1903 usig->common |= cpu_to_le32
1904 (FIELD_PREP(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BW, bw));
1905
1906 /* report the AMPDU-EOF bit on single frames */
1907 if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1908 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
1909 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1910 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
1911 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1912 }
1913
1914 /* update aggregation data for monitor sake on default queue */
1915 if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) &&
1916 (phy_info & IWL_RX_MPDU_PHY_AMPDU) && phy_data->first_subframe) {
1917 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1918 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
1919 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1920 }
1921
1922 if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1923 iwl_mvm_decode_eht_phy_data(mvm, phy_data, rx_status, eht, usig);
1924
1925 #define CHECK_TYPE(F) \
1926 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F != \
1927 (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS))
1928
1929 CHECK_TYPE(SU);
1930 CHECK_TYPE(EXT_SU);
1931 CHECK_TYPE(MU);
1932 CHECK_TYPE(TRIG);
1933
1934 switch (FIELD_GET(RATE_MCS_HE_GI_LTF_MSK, rate_n_flags)) {
1935 case 0:
1936 if (he_type == RATE_MCS_HE_TYPE_TRIG) {
1937 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_1_6;
1938 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
1939 } else {
1940 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_0_8;
1941 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1942 }
1943 break;
1944 case 1:
1945 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_1_6;
1946 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1947 break;
1948 case 2:
1949 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1950 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1951 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_3_2;
1952 else
1953 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_0_8;
1954 break;
1955 case 3:
1956 if (he_type != RATE_MCS_HE_TYPE_TRIG) {
1957 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1958 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_3_2;
1959 }
1960 break;
1961 default:
1962 /* nothing here */
1963 break;
1964 }
1965
1966 if (ltf != IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN) {
1967 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_GI);
1968 eht->data[0] |= cpu_to_le32
1969 (FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_LTF,
1970 ltf) |
1971 FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_GI,
1972 rx_status->eht.gi));
1973 }
1974
1975
1976 if (!phy_data->with_data) {
1977 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_NSS_S |
1978 IEEE80211_RADIOTAP_EHT_KNOWN_BEAMFORMED_S);
1979 eht->data[7] |=
1980 le32_encode_bits(le32_get_bits(phy_data->rx_vec[2],
1981 RX_NO_DATA_RX_VEC2_EHT_NSTS_MSK),
1982 IEEE80211_RADIOTAP_EHT_DATA7_NSS_S);
1983 if (rate_n_flags & RATE_MCS_BF_MSK)
1984 eht->data[7] |=
1985 cpu_to_le32(IEEE80211_RADIOTAP_EHT_DATA7_BEAMFORMED_S);
1986 } else {
1987 eht->user_info[0] |=
1988 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_MCS_KNOWN |
1989 IEEE80211_RADIOTAP_EHT_USER_INFO_CODING_KNOWN |
1990 IEEE80211_RADIOTAP_EHT_USER_INFO_NSS_KNOWN_O |
1991 IEEE80211_RADIOTAP_EHT_USER_INFO_BEAMFORMING_KNOWN_O |
1992 IEEE80211_RADIOTAP_EHT_USER_INFO_DATA_FOR_USER);
1993
1994 if (rate_n_flags & RATE_MCS_BF_MSK)
1995 eht->user_info[0] |=
1996 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_BEAMFORMING_O);
1997
1998 if (rate_n_flags & RATE_MCS_LDPC_MSK)
1999 eht->user_info[0] |=
2000 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_CODING);
2001
2002 eht->user_info[0] |= cpu_to_le32
2003 (FIELD_PREP(IEEE80211_RADIOTAP_EHT_USER_INFO_MCS,
2004 FIELD_GET(RATE_VHT_MCS_RATE_CODE_MSK,
2005 rate_n_flags)) |
2006 FIELD_PREP(IEEE80211_RADIOTAP_EHT_USER_INFO_NSS_O,
2007 FIELD_GET(RATE_MCS_NSS_MSK, rate_n_flags)));
2008 }
2009 }
2010
iwl_mvm_rx_he(struct iwl_mvm * mvm,struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data,int queue)2011 static void iwl_mvm_rx_he(struct iwl_mvm *mvm, struct sk_buff *skb,
2012 struct iwl_mvm_rx_phy_data *phy_data,
2013 int queue)
2014 {
2015 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
2016 struct ieee80211_radiotap_he *he = NULL;
2017 struct ieee80211_radiotap_he_mu *he_mu = NULL;
2018 u32 rate_n_flags = phy_data->rate_n_flags;
2019 u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
2020 u8 ltf;
2021 static const struct ieee80211_radiotap_he known = {
2022 .data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN |
2023 IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN |
2024 IEEE80211_RADIOTAP_HE_DATA1_STBC_KNOWN |
2025 IEEE80211_RADIOTAP_HE_DATA1_CODING_KNOWN),
2026 .data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN |
2027 IEEE80211_RADIOTAP_HE_DATA2_TXBF_KNOWN),
2028 };
2029 static const struct ieee80211_radiotap_he_mu mu_known = {
2030 .flags1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS_KNOWN |
2031 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM_KNOWN |
2032 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN |
2033 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_COMP_KNOWN),
2034 .flags2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW_KNOWN |
2035 IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN),
2036 };
2037 u16 phy_info = phy_data->phy_info;
2038
2039 he = skb_put_data(skb, &known, sizeof(known));
2040 rx_status->flag |= RX_FLAG_RADIOTAP_HE;
2041
2042 if (phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU ||
2043 phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU_EXT) {
2044 he_mu = skb_put_data(skb, &mu_known, sizeof(mu_known));
2045 rx_status->flag |= RX_FLAG_RADIOTAP_HE_MU;
2046 }
2047
2048 /* report the AMPDU-EOF bit on single frames */
2049 if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
2050 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
2051 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
2052 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF))
2053 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
2054 }
2055
2056 if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
2057 iwl_mvm_decode_he_phy_data(mvm, phy_data, he, he_mu, rx_status,
2058 queue);
2059
2060 /* update aggregation data for monitor sake on default queue */
2061 if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) &&
2062 (phy_info & IWL_RX_MPDU_PHY_AMPDU) && phy_data->first_subframe) {
2063 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
2064 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
2065 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
2066 }
2067
2068 if (he_type == RATE_MCS_HE_TYPE_EXT_SU &&
2069 rate_n_flags & RATE_MCS_HE_106T_MSK) {
2070 rx_status->bw = RATE_INFO_BW_HE_RU;
2071 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
2072 }
2073
2074 /* actually data is filled in mac80211 */
2075 if (he_type == RATE_MCS_HE_TYPE_SU ||
2076 he_type == RATE_MCS_HE_TYPE_EXT_SU)
2077 he->data1 |=
2078 cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
2079
2080 #define CHECK_TYPE(F) \
2081 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F != \
2082 (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS))
2083
2084 CHECK_TYPE(SU);
2085 CHECK_TYPE(EXT_SU);
2086 CHECK_TYPE(MU);
2087 CHECK_TYPE(TRIG);
2088
2089 he->data1 |= cpu_to_le16(he_type >> RATE_MCS_HE_TYPE_POS);
2090
2091 if (rate_n_flags & RATE_MCS_BF_MSK)
2092 he->data5 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA5_TXBF);
2093
2094 switch ((rate_n_flags & RATE_MCS_HE_GI_LTF_MSK) >>
2095 RATE_MCS_HE_GI_LTF_POS) {
2096 case 0:
2097 if (he_type == RATE_MCS_HE_TYPE_TRIG)
2098 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
2099 else
2100 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
2101 if (he_type == RATE_MCS_HE_TYPE_MU)
2102 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
2103 else
2104 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
2105 break;
2106 case 1:
2107 if (he_type == RATE_MCS_HE_TYPE_TRIG)
2108 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
2109 else
2110 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
2111 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
2112 break;
2113 case 2:
2114 if (he_type == RATE_MCS_HE_TYPE_TRIG) {
2115 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
2116 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
2117 } else {
2118 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
2119 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
2120 }
2121 break;
2122 case 3:
2123 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
2124 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
2125 break;
2126 case 4:
2127 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
2128 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
2129 break;
2130 default:
2131 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN;
2132 }
2133
2134 he->data5 |= le16_encode_bits(ltf,
2135 IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE);
2136 }
2137
iwl_mvm_decode_lsig(struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data)2138 static void iwl_mvm_decode_lsig(struct sk_buff *skb,
2139 struct iwl_mvm_rx_phy_data *phy_data)
2140 {
2141 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
2142 struct ieee80211_radiotap_lsig *lsig;
2143
2144 switch (phy_data->info_type) {
2145 case IWL_RX_PHY_INFO_TYPE_HT:
2146 case IWL_RX_PHY_INFO_TYPE_VHT_SU:
2147 case IWL_RX_PHY_INFO_TYPE_VHT_MU:
2148 case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
2149 case IWL_RX_PHY_INFO_TYPE_HE_SU:
2150 case IWL_RX_PHY_INFO_TYPE_HE_MU:
2151 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
2152 case IWL_RX_PHY_INFO_TYPE_HE_TB:
2153 case IWL_RX_PHY_INFO_TYPE_EHT_MU:
2154 case IWL_RX_PHY_INFO_TYPE_EHT_TB:
2155 case IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT:
2156 case IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT:
2157 lsig = skb_put(skb, sizeof(*lsig));
2158 lsig->data1 = cpu_to_le16(IEEE80211_RADIOTAP_LSIG_DATA1_LENGTH_KNOWN);
2159 lsig->data2 = le16_encode_bits(le32_get_bits(phy_data->d1,
2160 IWL_RX_PHY_DATA1_LSIG_LEN_MASK),
2161 IEEE80211_RADIOTAP_LSIG_DATA2_LENGTH);
2162 rx_status->flag |= RX_FLAG_RADIOTAP_LSIG;
2163 break;
2164 default:
2165 break;
2166 }
2167 }
2168
iwl_mvm_nl80211_band_from_rx_msdu(u8 phy_band)2169 static inline u8 iwl_mvm_nl80211_band_from_rx_msdu(u8 phy_band)
2170 {
2171 switch (phy_band) {
2172 case PHY_BAND_24:
2173 return NL80211_BAND_2GHZ;
2174 case PHY_BAND_5:
2175 return NL80211_BAND_5GHZ;
2176 case PHY_BAND_6:
2177 return NL80211_BAND_6GHZ;
2178 default:
2179 WARN_ONCE(1, "Unsupported phy band (%u)\n", phy_band);
2180 return NL80211_BAND_5GHZ;
2181 }
2182 }
2183
2184 struct iwl_rx_sta_csa {
2185 bool all_sta_unblocked;
2186 struct ieee80211_vif *vif;
2187 };
2188
iwl_mvm_rx_get_sta_block_tx(void * data,struct ieee80211_sta * sta)2189 static void iwl_mvm_rx_get_sta_block_tx(void *data, struct ieee80211_sta *sta)
2190 {
2191 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2192 struct iwl_rx_sta_csa *rx_sta_csa = data;
2193
2194 if (mvmsta->vif != rx_sta_csa->vif)
2195 return;
2196
2197 if (mvmsta->disable_tx)
2198 rx_sta_csa->all_sta_unblocked = false;
2199 }
2200
2201 /*
2202 * Note: requires also rx_status->band to be prefilled, as well
2203 * as phy_data (apart from phy_data->info_type)
2204 */
iwl_mvm_rx_fill_status(struct iwl_mvm * mvm,struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data,int queue)2205 static void iwl_mvm_rx_fill_status(struct iwl_mvm *mvm,
2206 struct sk_buff *skb,
2207 struct iwl_mvm_rx_phy_data *phy_data,
2208 int queue)
2209 {
2210 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
2211 u32 rate_n_flags = phy_data->rate_n_flags;
2212 u8 stbc = u32_get_bits(rate_n_flags, RATE_MCS_STBC_MSK);
2213 u32 format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
2214 bool is_sgi;
2215
2216 phy_data->info_type = IWL_RX_PHY_INFO_TYPE_NONE;
2217
2218 if (phy_data->phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
2219 phy_data->info_type =
2220 le32_get_bits(phy_data->d1,
2221 IWL_RX_PHY_DATA1_INFO_TYPE_MASK);
2222
2223 /* This may be overridden by iwl_mvm_rx_he() to HE_RU */
2224 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
2225 case RATE_MCS_CHAN_WIDTH_20:
2226 break;
2227 case RATE_MCS_CHAN_WIDTH_40:
2228 rx_status->bw = RATE_INFO_BW_40;
2229 break;
2230 case RATE_MCS_CHAN_WIDTH_80:
2231 rx_status->bw = RATE_INFO_BW_80;
2232 break;
2233 case RATE_MCS_CHAN_WIDTH_160:
2234 rx_status->bw = RATE_INFO_BW_160;
2235 break;
2236 case RATE_MCS_CHAN_WIDTH_320:
2237 rx_status->bw = RATE_INFO_BW_320;
2238 break;
2239 }
2240
2241 /* must be before L-SIG data */
2242 if (format == RATE_MCS_HE_MSK)
2243 iwl_mvm_rx_he(mvm, skb, phy_data, queue);
2244
2245 iwl_mvm_decode_lsig(skb, phy_data);
2246
2247 rx_status->device_timestamp = phy_data->gp2_on_air_rise;
2248 rx_status->freq = ieee80211_channel_to_frequency(phy_data->channel,
2249 rx_status->band);
2250 iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags,
2251 phy_data->energy_a, phy_data->energy_b);
2252
2253 /* using TLV format and must be after all fixed len fields */
2254 if (format == RATE_MCS_EHT_MSK)
2255 iwl_mvm_rx_eht(mvm, skb, phy_data, queue);
2256
2257 if (unlikely(mvm->monitor_on))
2258 iwl_mvm_add_rtap_sniffer_config(mvm, skb);
2259
2260 is_sgi = format == RATE_MCS_HE_MSK ?
2261 iwl_he_is_sgi(rate_n_flags) :
2262 rate_n_flags & RATE_MCS_SGI_MSK;
2263
2264 if (!(format == RATE_MCS_CCK_MSK) && is_sgi)
2265 rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
2266
2267 if (rate_n_flags & RATE_MCS_LDPC_MSK)
2268 rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
2269
2270 switch (format) {
2271 case RATE_MCS_VHT_MSK:
2272 rx_status->encoding = RX_ENC_VHT;
2273 break;
2274 case RATE_MCS_HE_MSK:
2275 rx_status->encoding = RX_ENC_HE;
2276 rx_status->he_dcm =
2277 !!(rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK);
2278 break;
2279 case RATE_MCS_EHT_MSK:
2280 rx_status->encoding = RX_ENC_EHT;
2281 break;
2282 }
2283
2284 switch (format) {
2285 case RATE_MCS_HT_MSK:
2286 rx_status->encoding = RX_ENC_HT;
2287 rx_status->rate_idx = RATE_HT_MCS_INDEX(rate_n_flags);
2288 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
2289 break;
2290 case RATE_MCS_VHT_MSK:
2291 case RATE_MCS_HE_MSK:
2292 case RATE_MCS_EHT_MSK:
2293 rx_status->nss =
2294 u32_get_bits(rate_n_flags, RATE_MCS_NSS_MSK) + 1;
2295 rx_status->rate_idx = rate_n_flags & RATE_MCS_CODE_MSK;
2296 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
2297 break;
2298 default: {
2299 int rate = iwl_mvm_legacy_hw_idx_to_mac80211_idx(rate_n_flags,
2300 rx_status->band);
2301
2302 rx_status->rate_idx = rate;
2303
2304 if ((rate < 0 || rate > 0xFF)) {
2305 rx_status->rate_idx = 0;
2306 if (net_ratelimit())
2307 IWL_ERR(mvm, "Invalid rate flags 0x%x, band %d,\n",
2308 rate_n_flags, rx_status->band);
2309 }
2310
2311 break;
2312 }
2313 }
2314 }
2315
iwl_mvm_rx_mpdu_mq(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2316 void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
2317 struct iwl_rx_cmd_buffer *rxb, int queue)
2318 {
2319 struct ieee80211_rx_status *rx_status;
2320 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2321 struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
2322 struct ieee80211_hdr *hdr;
2323 u32 len;
2324 u32 pkt_len = iwl_rx_packet_payload_len(pkt);
2325 struct ieee80211_sta *sta = NULL;
2326 struct ieee80211_link_sta *link_sta = NULL;
2327 struct sk_buff *skb;
2328 u8 crypt_len = 0;
2329 size_t desc_size;
2330 struct iwl_mvm_rx_phy_data phy_data = {};
2331 u32 format;
2332
2333 if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
2334 return;
2335
2336 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
2337 desc_size = sizeof(*desc);
2338 else
2339 desc_size = IWL_RX_DESC_SIZE_V1;
2340
2341 if (unlikely(pkt_len < desc_size)) {
2342 IWL_DEBUG_DROP(mvm, "Bad REPLY_RX_MPDU_CMD size\n");
2343 return;
2344 }
2345
2346 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
2347 phy_data.rate_n_flags = le32_to_cpu(desc->v3.rate_n_flags);
2348 phy_data.channel = desc->v3.channel;
2349 phy_data.gp2_on_air_rise = le32_to_cpu(desc->v3.gp2_on_air_rise);
2350 phy_data.energy_a = desc->v3.energy_a;
2351 phy_data.energy_b = desc->v3.energy_b;
2352
2353 phy_data.d0 = desc->v3.phy_data0;
2354 phy_data.d1 = desc->v3.phy_data1;
2355 phy_data.d2 = desc->v3.phy_data2;
2356 phy_data.d3 = desc->v3.phy_data3;
2357 phy_data.eht_d4 = desc->phy_eht_data4;
2358 phy_data.d5 = desc->v3.phy_data5;
2359 } else {
2360 phy_data.rate_n_flags = le32_to_cpu(desc->v1.rate_n_flags);
2361 phy_data.channel = desc->v1.channel;
2362 phy_data.gp2_on_air_rise = le32_to_cpu(desc->v1.gp2_on_air_rise);
2363 phy_data.energy_a = desc->v1.energy_a;
2364 phy_data.energy_b = desc->v1.energy_b;
2365
2366 phy_data.d0 = desc->v1.phy_data0;
2367 phy_data.d1 = desc->v1.phy_data1;
2368 phy_data.d2 = desc->v1.phy_data2;
2369 phy_data.d3 = desc->v1.phy_data3;
2370 }
2371
2372 if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
2373 REPLY_RX_MPDU_CMD, 0) < 4) {
2374 phy_data.rate_n_flags = iwl_new_rate_from_v1(phy_data.rate_n_flags);
2375 IWL_DEBUG_DROP(mvm, "Got old format rate, converting. New rate: 0x%x\n",
2376 phy_data.rate_n_flags);
2377 }
2378
2379 format = phy_data.rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
2380
2381 len = le16_to_cpu(desc->mpdu_len);
2382
2383 if (unlikely(len + desc_size > pkt_len)) {
2384 IWL_DEBUG_DROP(mvm, "FW lied about packet len\n");
2385 return;
2386 }
2387
2388 phy_data.with_data = true;
2389 phy_data.phy_info = le16_to_cpu(desc->phy_info);
2390 phy_data.d4 = desc->phy_data4;
2391
2392 hdr = (void *)(pkt->data + desc_size);
2393 /* Dont use dev_alloc_skb(), we'll have enough headroom once
2394 * ieee80211_hdr pulled.
2395 */
2396 skb = alloc_skb(128, GFP_ATOMIC);
2397 if (!skb) {
2398 IWL_ERR(mvm, "alloc_skb failed\n");
2399 return;
2400 }
2401
2402 if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
2403 /*
2404 * If the device inserted padding it means that (it thought)
2405 * the 802.11 header wasn't a multiple of 4 bytes long. In
2406 * this case, reserve two bytes at the start of the SKB to
2407 * align the payload properly in case we end up copying it.
2408 */
2409 skb_reserve(skb, 2);
2410 }
2411
2412 rx_status = IEEE80211_SKB_RXCB(skb);
2413
2414 /*
2415 * Keep packets with CRC errors (and with overrun) for monitor mode
2416 * (otherwise the firmware discards them) but mark them as bad.
2417 */
2418 if (!(desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_CRC_OK)) ||
2419 !(desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_OVERRUN_OK))) {
2420 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n",
2421 le32_to_cpu(desc->status));
2422 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
2423 }
2424
2425 /* set the preamble flag if appropriate */
2426 if (format == RATE_MCS_CCK_MSK &&
2427 phy_data.phy_info & IWL_RX_MPDU_PHY_SHORT_PREAMBLE)
2428 rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
2429
2430 if (likely(!(phy_data.phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD))) {
2431 u64 tsf_on_air_rise;
2432
2433 if (mvm->trans->trans_cfg->device_family >=
2434 IWL_DEVICE_FAMILY_AX210)
2435 tsf_on_air_rise = le64_to_cpu(desc->v3.tsf_on_air_rise);
2436 else
2437 tsf_on_air_rise = le64_to_cpu(desc->v1.tsf_on_air_rise);
2438
2439 rx_status->mactime = tsf_on_air_rise;
2440 /* TSF as indicated by the firmware is at INA time */
2441 rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;
2442 }
2443
2444 if (iwl_mvm_is_band_in_rx_supported(mvm)) {
2445 u8 band = BAND_IN_RX_STATUS(desc->mac_phy_idx);
2446
2447 rx_status->band = iwl_mvm_nl80211_band_from_rx_msdu(band);
2448 } else {
2449 rx_status->band = phy_data.channel > 14 ? NL80211_BAND_5GHZ :
2450 NL80211_BAND_2GHZ;
2451 }
2452
2453 /* update aggregation data for monitor sake on default queue */
2454 if (!queue && (phy_data.phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
2455 bool toggle_bit;
2456
2457 toggle_bit = phy_data.phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE;
2458 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
2459 /*
2460 * Toggle is switched whenever new aggregation starts. Make
2461 * sure ampdu_reference is never 0 so we can later use it to
2462 * see if the frame was really part of an A-MPDU or not.
2463 */
2464 if (toggle_bit != mvm->ampdu_toggle) {
2465 mvm->ampdu_ref++;
2466 if (mvm->ampdu_ref == 0)
2467 mvm->ampdu_ref++;
2468 mvm->ampdu_toggle = toggle_bit;
2469 phy_data.first_subframe = true;
2470 }
2471 rx_status->ampdu_reference = mvm->ampdu_ref;
2472 }
2473
2474 rcu_read_lock();
2475
2476 if (desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_SRC_STA_FOUND)) {
2477 u8 id = le32_get_bits(desc->status, IWL_RX_MPDU_STATUS_STA_ID);
2478
2479 if (!WARN_ON_ONCE(id >= mvm->fw->ucode_capa.num_stations)) {
2480 sta = rcu_dereference(mvm->fw_id_to_mac_id[id]);
2481 if (IS_ERR(sta))
2482 sta = NULL;
2483 link_sta = rcu_dereference(mvm->fw_id_to_link_sta[id]);
2484
2485 if (sta && sta->valid_links && link_sta) {
2486 rx_status->link_valid = 1;
2487 rx_status->link_id = link_sta->link_id;
2488 }
2489 }
2490 } else if (!is_multicast_ether_addr(hdr->addr2)) {
2491 /*
2492 * This is fine since we prevent two stations with the same
2493 * address from being added.
2494 */
2495 sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
2496 }
2497
2498 if (iwl_mvm_rx_crypto(mvm, sta, hdr, rx_status, phy_data.phy_info, desc,
2499 le32_to_cpu(pkt->len_n_flags), queue,
2500 &crypt_len)) {
2501 kfree_skb(skb);
2502 goto out;
2503 }
2504
2505 iwl_mvm_rx_fill_status(mvm, skb, &phy_data, queue);
2506
2507 if (sta) {
2508 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2509 struct ieee80211_vif *tx_blocked_vif =
2510 rcu_dereference(mvm->csa_tx_blocked_vif);
2511 u8 baid = (u8)((le32_to_cpu(desc->reorder_data) &
2512 IWL_RX_MPDU_REORDER_BAID_MASK) >>
2513 IWL_RX_MPDU_REORDER_BAID_SHIFT);
2514 struct iwl_fw_dbg_trigger_tlv *trig;
2515 struct ieee80211_vif *vif = mvmsta->vif;
2516
2517 if (!mvm->tcm.paused && len >= sizeof(*hdr) &&
2518 !is_multicast_ether_addr(hdr->addr1) &&
2519 ieee80211_is_data(hdr->frame_control) &&
2520 time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
2521 schedule_delayed_work(&mvm->tcm.work, 0);
2522
2523 /*
2524 * We have tx blocked stations (with CS bit). If we heard
2525 * frames from a blocked station on a new channel we can
2526 * TX to it again.
2527 */
2528 if (unlikely(tx_blocked_vif) && tx_blocked_vif == vif) {
2529 struct iwl_mvm_vif *mvmvif =
2530 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
2531 struct iwl_rx_sta_csa rx_sta_csa = {
2532 .all_sta_unblocked = true,
2533 .vif = tx_blocked_vif,
2534 };
2535
2536 if (mvmvif->csa_target_freq == rx_status->freq)
2537 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta,
2538 false);
2539 ieee80211_iterate_stations_atomic(mvm->hw,
2540 iwl_mvm_rx_get_sta_block_tx,
2541 &rx_sta_csa);
2542
2543 if (rx_sta_csa.all_sta_unblocked) {
2544 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2545 /* Unblock BCAST / MCAST station */
2546 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
2547 cancel_delayed_work(&mvm->cs_tx_unblock_dwork);
2548 }
2549 }
2550
2551 rs_update_last_rssi(mvm, mvmsta, rx_status);
2552
2553 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt,
2554 ieee80211_vif_to_wdev(vif),
2555 FW_DBG_TRIGGER_RSSI);
2556
2557 if (trig && ieee80211_is_beacon(hdr->frame_control)) {
2558 struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
2559 s32 rssi;
2560
2561 rssi_trig = (void *)trig->data;
2562 rssi = le32_to_cpu(rssi_trig->rssi);
2563
2564 if (rx_status->signal < rssi)
2565 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
2566 NULL);
2567 }
2568
2569 if (ieee80211_is_data(hdr->frame_control))
2570 iwl_mvm_rx_csum(mvm, sta, skb, pkt);
2571
2572 if (iwl_mvm_is_dup(sta, queue, rx_status, hdr, desc)) {
2573 kfree_skb(skb);
2574 goto out;
2575 }
2576
2577 /*
2578 * Our hardware de-aggregates AMSDUs but copies the mac header
2579 * as it to the de-aggregated MPDUs. We need to turn off the
2580 * AMSDU bit in the QoS control ourselves.
2581 * In addition, HW reverses addr3 and addr4 - reverse it back.
2582 */
2583 if ((desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
2584 !WARN_ON(!ieee80211_is_data_qos(hdr->frame_control))) {
2585 u8 *qc = ieee80211_get_qos_ctl(hdr);
2586
2587 *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
2588
2589 if (mvm->trans->trans_cfg->device_family ==
2590 IWL_DEVICE_FAMILY_9000) {
2591 iwl_mvm_flip_address(hdr->addr3);
2592
2593 if (ieee80211_has_a4(hdr->frame_control))
2594 iwl_mvm_flip_address(hdr->addr4);
2595 }
2596 }
2597 if (baid != IWL_RX_REORDER_DATA_INVALID_BAID) {
2598 u32 reorder_data = le32_to_cpu(desc->reorder_data);
2599
2600 iwl_mvm_agg_rx_received(mvm, reorder_data, baid);
2601 }
2602 }
2603
2604 /* management stuff on default queue */
2605 if (!queue) {
2606 if (unlikely((ieee80211_is_beacon(hdr->frame_control) ||
2607 ieee80211_is_probe_resp(hdr->frame_control)) &&
2608 mvm->sched_scan_pass_all ==
2609 SCHED_SCAN_PASS_ALL_ENABLED))
2610 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND;
2611
2612 if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
2613 ieee80211_is_probe_resp(hdr->frame_control)))
2614 rx_status->boottime_ns = ktime_get_boottime_ns();
2615 }
2616
2617 if (iwl_mvm_create_skb(mvm, skb, hdr, len, crypt_len, rxb)) {
2618 kfree_skb(skb);
2619 goto out;
2620 }
2621
2622 if (!iwl_mvm_reorder(mvm, napi, queue, sta, skb, desc) &&
2623 likely(!iwl_mvm_time_sync_frame(mvm, skb, hdr->addr2)) &&
2624 likely(!iwl_mvm_mei_filter_scan(mvm, skb))) {
2625 if (mvm->trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_9000 &&
2626 (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
2627 !(desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME))
2628 rx_status->flag |= RX_FLAG_AMSDU_MORE;
2629
2630 iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue, sta);
2631 }
2632 out:
2633 rcu_read_unlock();
2634 }
2635
iwl_mvm_rx_monitor_no_data(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2636 void iwl_mvm_rx_monitor_no_data(struct iwl_mvm *mvm, struct napi_struct *napi,
2637 struct iwl_rx_cmd_buffer *rxb, int queue)
2638 {
2639 struct ieee80211_rx_status *rx_status;
2640 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2641 struct iwl_rx_no_data_ver_3 *desc = (void *)pkt->data;
2642 u32 rssi;
2643 u32 info_type;
2644 struct ieee80211_sta *sta = NULL;
2645 struct sk_buff *skb;
2646 struct iwl_mvm_rx_phy_data phy_data;
2647 u32 format;
2648
2649 if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
2650 return;
2651
2652 if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(struct iwl_rx_no_data)))
2653 return;
2654
2655 rssi = le32_to_cpu(desc->rssi);
2656 info_type = le32_to_cpu(desc->info) & RX_NO_DATA_INFO_TYPE_MSK;
2657 phy_data.d0 = desc->phy_info[0];
2658 phy_data.d1 = desc->phy_info[1];
2659 phy_data.phy_info = IWL_RX_MPDU_PHY_TSF_OVERLOAD;
2660 phy_data.gp2_on_air_rise = le32_to_cpu(desc->on_air_rise_time);
2661 phy_data.rate_n_flags = le32_to_cpu(desc->rate);
2662 phy_data.energy_a = u32_get_bits(rssi, RX_NO_DATA_CHAIN_A_MSK);
2663 phy_data.energy_b = u32_get_bits(rssi, RX_NO_DATA_CHAIN_B_MSK);
2664 phy_data.channel = u32_get_bits(rssi, RX_NO_DATA_CHANNEL_MSK);
2665 phy_data.with_data = false;
2666 phy_data.rx_vec[0] = desc->rx_vec[0];
2667 phy_data.rx_vec[1] = desc->rx_vec[1];
2668
2669 if (iwl_fw_lookup_notif_ver(mvm->fw, DATA_PATH_GROUP,
2670 RX_NO_DATA_NOTIF, 0) < 2) {
2671 IWL_DEBUG_DROP(mvm, "Got an old rate format. Old rate: 0x%x\n",
2672 phy_data.rate_n_flags);
2673 phy_data.rate_n_flags = iwl_new_rate_from_v1(phy_data.rate_n_flags);
2674 IWL_DEBUG_DROP(mvm, " Rate after conversion to the new format: 0x%x\n",
2675 phy_data.rate_n_flags);
2676 }
2677
2678 format = phy_data.rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
2679
2680 if (iwl_fw_lookup_notif_ver(mvm->fw, DATA_PATH_GROUP,
2681 RX_NO_DATA_NOTIF, 0) >= 3) {
2682 if (unlikely(iwl_rx_packet_payload_len(pkt) <
2683 sizeof(struct iwl_rx_no_data_ver_3)))
2684 /* invalid len for ver 3 */
2685 return;
2686 phy_data.rx_vec[2] = desc->rx_vec[2];
2687 phy_data.rx_vec[3] = desc->rx_vec[3];
2688 } else {
2689 if (format == RATE_MCS_EHT_MSK)
2690 /* no support for EHT before version 3 API */
2691 return;
2692 }
2693
2694 /* Dont use dev_alloc_skb(), we'll have enough headroom once
2695 * ieee80211_hdr pulled.
2696 */
2697 skb = alloc_skb(128, GFP_ATOMIC);
2698 if (!skb) {
2699 IWL_ERR(mvm, "alloc_skb failed\n");
2700 return;
2701 }
2702
2703 rx_status = IEEE80211_SKB_RXCB(skb);
2704
2705 /* 0-length PSDU */
2706 rx_status->flag |= RX_FLAG_NO_PSDU;
2707
2708 switch (info_type) {
2709 case RX_NO_DATA_INFO_TYPE_NDP:
2710 rx_status->zero_length_psdu_type =
2711 IEEE80211_RADIOTAP_ZERO_LEN_PSDU_SOUNDING;
2712 break;
2713 case RX_NO_DATA_INFO_TYPE_MU_UNMATCHED:
2714 case RX_NO_DATA_INFO_TYPE_TB_UNMATCHED:
2715 rx_status->zero_length_psdu_type =
2716 IEEE80211_RADIOTAP_ZERO_LEN_PSDU_NOT_CAPTURED;
2717 break;
2718 default:
2719 rx_status->zero_length_psdu_type =
2720 IEEE80211_RADIOTAP_ZERO_LEN_PSDU_VENDOR;
2721 break;
2722 }
2723
2724 rx_status->band = phy_data.channel > 14 ? NL80211_BAND_5GHZ :
2725 NL80211_BAND_2GHZ;
2726
2727 iwl_mvm_rx_fill_status(mvm, skb, &phy_data, queue);
2728
2729 /* no more radio tap info should be put after this point.
2730 *
2731 * We mark it as mac header, for upper layers to know where
2732 * all radio tap header ends.
2733 *
2734 * Since data doesn't move data while putting data on skb and that is
2735 * the only way we use, data + len is the next place that hdr would be put
2736 */
2737 skb_set_mac_header(skb, skb->len);
2738
2739 /*
2740 * Override the nss from the rx_vec since the rate_n_flags has
2741 * only 2 bits for the nss which gives a max of 4 ss but there
2742 * may be up to 8 spatial streams.
2743 */
2744 switch (format) {
2745 case RATE_MCS_VHT_MSK:
2746 rx_status->nss =
2747 le32_get_bits(desc->rx_vec[0],
2748 RX_NO_DATA_RX_VEC0_VHT_NSTS_MSK) + 1;
2749 break;
2750 case RATE_MCS_HE_MSK:
2751 rx_status->nss =
2752 le32_get_bits(desc->rx_vec[0],
2753 RX_NO_DATA_RX_VEC0_HE_NSTS_MSK) + 1;
2754 break;
2755 case RATE_MCS_EHT_MSK:
2756 rx_status->nss =
2757 le32_get_bits(desc->rx_vec[2],
2758 RX_NO_DATA_RX_VEC2_EHT_NSTS_MSK) + 1;
2759 }
2760
2761 rcu_read_lock();
2762 ieee80211_rx_napi(mvm->hw, sta, skb, napi);
2763 rcu_read_unlock();
2764 }
2765
iwl_mvm_rx_frame_release(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2766 void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
2767 struct iwl_rx_cmd_buffer *rxb, int queue)
2768 {
2769 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2770 struct iwl_frame_release *release = (void *)pkt->data;
2771
2772 if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(*release)))
2773 return;
2774
2775 iwl_mvm_release_frames_from_notif(mvm, napi, release->baid,
2776 le16_to_cpu(release->nssn),
2777 queue, 0);
2778 }
2779
iwl_mvm_rx_bar_frame_release(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2780 void iwl_mvm_rx_bar_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
2781 struct iwl_rx_cmd_buffer *rxb, int queue)
2782 {
2783 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2784 struct iwl_bar_frame_release *release = (void *)pkt->data;
2785 unsigned int baid = le32_get_bits(release->ba_info,
2786 IWL_BAR_FRAME_RELEASE_BAID_MASK);
2787 unsigned int nssn = le32_get_bits(release->ba_info,
2788 IWL_BAR_FRAME_RELEASE_NSSN_MASK);
2789 unsigned int sta_id = le32_get_bits(release->sta_tid,
2790 IWL_BAR_FRAME_RELEASE_STA_MASK);
2791 unsigned int tid = le32_get_bits(release->sta_tid,
2792 IWL_BAR_FRAME_RELEASE_TID_MASK);
2793 struct iwl_mvm_baid_data *baid_data;
2794
2795 if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(*release)))
2796 return;
2797
2798 if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID ||
2799 baid >= ARRAY_SIZE(mvm->baid_map)))
2800 return;
2801
2802 rcu_read_lock();
2803 baid_data = rcu_dereference(mvm->baid_map[baid]);
2804 if (!baid_data) {
2805 IWL_DEBUG_RX(mvm,
2806 "Got valid BAID %d but not allocated, invalid BAR release!\n",
2807 baid);
2808 goto out;
2809 }
2810
2811 if (WARN(tid != baid_data->tid || sta_id > IWL_MVM_STATION_COUNT_MAX ||
2812 !(baid_data->sta_mask & BIT(sta_id)),
2813 "baid 0x%x is mapped to sta_mask:0x%x tid:%d, but BAR release received for sta:%d tid:%d\n",
2814 baid, baid_data->sta_mask, baid_data->tid, sta_id,
2815 tid))
2816 goto out;
2817
2818 iwl_mvm_release_frames_from_notif(mvm, napi, baid, nssn, queue, 0);
2819 out:
2820 rcu_read_unlock();
2821 }
2822