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