1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2012-2014, 2018-2025 Intel Corporation
4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
5 * Copyright (C) 2015-2017 Intel Deutschland GmbH
6 */
7 #include <linux/etherdevice.h>
8 #include <linux/skbuff.h>
9 #if defined(__FreeBSD__)
10 #include <net/ieee80211_radiotap.h>
11 #endif
12 #include "iwl-trans.h"
13 #include "mvm.h"
14 #include "fw-api.h"
15 #include "time-sync.h"
16
iwl_mvm_check_pn(struct iwl_mvm * mvm,struct sk_buff * skb,int queue,struct ieee80211_sta * sta)17 static inline int iwl_mvm_check_pn(struct iwl_mvm *mvm, struct sk_buff *skb,
18 int queue, struct ieee80211_sta *sta)
19 {
20 struct iwl_mvm_sta *mvmsta;
21 struct ieee80211_hdr *hdr = (void *)skb_mac_header(skb);
22 struct ieee80211_rx_status *stats = IEEE80211_SKB_RXCB(skb);
23 struct iwl_mvm_key_pn *ptk_pn;
24 int res;
25 u8 tid, keyidx;
26 u8 pn[IEEE80211_CCMP_PN_LEN];
27 u8 *extiv;
28
29 /* do PN checking */
30
31 /* multicast and non-data only arrives on default queue */
32 if (!ieee80211_is_data(hdr->frame_control) ||
33 is_multicast_ether_addr(hdr->addr1))
34 return 0;
35
36 /* do not check PN for open AP */
37 if (!(stats->flag & RX_FLAG_DECRYPTED))
38 return 0;
39
40 /*
41 * avoid checking for default queue - we don't want to replicate
42 * all the logic that's necessary for checking the PN on fragmented
43 * frames, leave that to mac80211
44 */
45 if (queue == 0)
46 return 0;
47
48 /* if we are here - this for sure is either CCMP or GCMP */
49 if (IS_ERR_OR_NULL(sta)) {
50 IWL_DEBUG_DROP(mvm,
51 "expected hw-decrypted unicast frame for station\n");
52 return -1;
53 }
54
55 mvmsta = iwl_mvm_sta_from_mac80211(sta);
56
57 extiv = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control);
58 keyidx = extiv[3] >> 6;
59
60 ptk_pn = rcu_dereference(mvmsta->ptk_pn[keyidx]);
61 if (!ptk_pn)
62 return -1;
63
64 if (ieee80211_is_data_qos(hdr->frame_control))
65 tid = ieee80211_get_tid(hdr);
66 else
67 tid = 0;
68
69 /* we don't use HCCA/802.11 QoS TSPECs, so drop such frames */
70 if (tid >= IWL_MAX_TID_COUNT)
71 return -1;
72
73 /* load pn */
74 pn[0] = extiv[7];
75 pn[1] = extiv[6];
76 pn[2] = extiv[5];
77 pn[3] = extiv[4];
78 pn[4] = extiv[1];
79 pn[5] = extiv[0];
80
81 res = memcmp(pn, ptk_pn->q[queue].pn[tid], IEEE80211_CCMP_PN_LEN);
82 if (res < 0)
83 return -1;
84 if (!res && !(stats->flag & RX_FLAG_ALLOW_SAME_PN))
85 return -1;
86
87 memcpy(ptk_pn->q[queue].pn[tid], pn, IEEE80211_CCMP_PN_LEN);
88 stats->flag |= RX_FLAG_PN_VALIDATED;
89
90 return 0;
91 }
92
93 /* iwl_mvm_create_skb Adds the rxb to a new skb */
iwl_mvm_create_skb(struct iwl_mvm * mvm,struct sk_buff * skb,struct ieee80211_hdr * hdr,u16 len,u8 crypt_len,struct iwl_rx_cmd_buffer * rxb)94 static int iwl_mvm_create_skb(struct iwl_mvm *mvm, struct sk_buff *skb,
95 struct ieee80211_hdr *hdr, u16 len, u8 crypt_len,
96 struct iwl_rx_cmd_buffer *rxb)
97 {
98 struct iwl_rx_packet *pkt = rxb_addr(rxb);
99 struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
100 unsigned int headlen, fraglen, pad_len = 0;
101 unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control);
102 u8 mic_crc_len = u8_get_bits(desc->mac_flags1,
103 IWL_RX_MPDU_MFLG1_MIC_CRC_LEN_MASK) << 1;
104
105 if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
106 len -= 2;
107 pad_len = 2;
108 }
109
110 /*
111 * For non monitor interface strip the bytes the RADA might not have
112 * removed (it might be disabled, e.g. for mgmt frames). As a monitor
113 * interface cannot exist with other interfaces, this removal is safe
114 * and sufficient, in monitor mode there's no decryption being done.
115 */
116 if (len > mic_crc_len && !ieee80211_hw_check(mvm->hw, RX_INCLUDES_FCS))
117 len -= mic_crc_len;
118
119 /* If frame is small enough to fit in skb->head, pull it completely.
120 * If not, only pull ieee80211_hdr (including crypto if present, and
121 * an additional 8 bytes for SNAP/ethertype, see below) so that
122 * splice() or TCP coalesce are more efficient.
123 *
124 * Since, in addition, ieee80211_data_to_8023() always pull in at
125 * least 8 bytes (possibly more for mesh) we can do the same here
126 * to save the cost of doing it later. That still doesn't pull in
127 * the actual IP header since the typical case has a SNAP header.
128 * If the latter changes (there are efforts in the standards group
129 * to do so) we should revisit this and ieee80211_data_to_8023().
130 */
131 headlen = (len <= skb_tailroom(skb)) ? len :
132 hdrlen + crypt_len + 8;
133
134 /* The firmware may align the packet to DWORD.
135 * The padding is inserted after the IV.
136 * After copying the header + IV skip the padding if
137 * present before copying packet data.
138 */
139 hdrlen += crypt_len;
140
141 if (unlikely(headlen < hdrlen))
142 return -EINVAL;
143
144 /* Since data doesn't move data while putting data on skb and that is
145 * the only way we use, data + len is the next place that hdr would be put
146 */
147 skb_set_mac_header(skb, skb->len);
148 skb_put_data(skb, hdr, hdrlen);
149 skb_put_data(skb, (u8 *)hdr + hdrlen + pad_len, headlen - hdrlen);
150
151 /*
152 * If we did CHECKSUM_COMPLETE, the hardware only does it right for
153 * certain cases and starts the checksum after the SNAP. Check if
154 * this is the case - it's easier to just bail out to CHECKSUM_NONE
155 * in the cases the hardware didn't handle, since it's rare to see
156 * such packets, even though the hardware did calculate the checksum
157 * in this case, just starting after the MAC header instead.
158 *
159 * Starting from Bz hardware, it calculates starting directly after
160 * the MAC header, so that matches mac80211's expectation.
161 */
162 if (skb->ip_summed == CHECKSUM_COMPLETE) {
163 struct {
164 u8 hdr[6];
165 __be16 type;
166 } __packed *shdr = (void *)((u8 *)hdr + hdrlen + pad_len);
167
168 if (unlikely(headlen - hdrlen < sizeof(*shdr) ||
169 !ether_addr_equal(shdr->hdr, rfc1042_header) ||
170 (shdr->type != htons(ETH_P_IP) &&
171 shdr->type != htons(ETH_P_ARP) &&
172 shdr->type != htons(ETH_P_IPV6) &&
173 shdr->type != htons(ETH_P_8021Q) &&
174 shdr->type != htons(ETH_P_PAE) &&
175 shdr->type != htons(ETH_P_TDLS))))
176 skb->ip_summed = CHECKSUM_NONE;
177 else if (mvm->trans->mac_cfg->device_family < IWL_DEVICE_FAMILY_BZ)
178 /* mac80211 assumes full CSUM including SNAP header */
179 skb_postpush_rcsum(skb, shdr, sizeof(*shdr));
180 }
181
182 fraglen = len - headlen;
183
184 if (fraglen) {
185 int offset = (u8 *)hdr + headlen + pad_len -
186 (u8 *)rxb_addr(rxb) + rxb_offset(rxb);
187
188 skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset,
189 fraglen, rxb->truesize);
190 }
191
192 return 0;
193 }
194
195 /* put a TLV on the skb and return data pointer
196 *
197 * Also pad to 4 the len and zero out all data part
198 */
199 static void *
iwl_mvm_radiotap_put_tlv(struct sk_buff * skb,u16 type,u16 len)200 iwl_mvm_radiotap_put_tlv(struct sk_buff *skb, u16 type, u16 len)
201 {
202 struct ieee80211_radiotap_tlv *tlv;
203
204 tlv = skb_put(skb, sizeof(*tlv));
205 tlv->type = cpu_to_le16(type);
206 tlv->len = cpu_to_le16(len);
207 return skb_put_zero(skb, ALIGN(len, 4));
208 }
209
iwl_mvm_add_rtap_sniffer_config(struct iwl_mvm * mvm,struct sk_buff * skb)210 static void iwl_mvm_add_rtap_sniffer_config(struct iwl_mvm *mvm,
211 struct sk_buff *skb)
212 {
213 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
214 struct ieee80211_radiotap_vendor_content *radiotap;
215 const u16 vendor_data_len = sizeof(mvm->cur_aid);
216
217 if (!mvm->cur_aid)
218 return;
219
220 radiotap = iwl_mvm_radiotap_put_tlv(skb,
221 IEEE80211_RADIOTAP_VENDOR_NAMESPACE,
222 sizeof(*radiotap) + vendor_data_len);
223
224 /* Intel OUI */
225 radiotap->oui[0] = 0xf6;
226 radiotap->oui[1] = 0x54;
227 radiotap->oui[2] = 0x25;
228 /* radiotap sniffer config sub-namespace */
229 radiotap->oui_subtype = 1;
230 radiotap->vendor_type = 0;
231
232 /* fill the data now */
233 memcpy(radiotap->data, &mvm->cur_aid, sizeof(mvm->cur_aid));
234
235 rx_status->flag |= RX_FLAG_RADIOTAP_TLV_AT_END;
236 }
237
238 /* iwl_mvm_pass_packet_to_mac80211 - passes the packet for mac80211 */
iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm * mvm,struct napi_struct * napi,struct sk_buff * skb,int queue,struct ieee80211_sta * sta)239 static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm,
240 struct napi_struct *napi,
241 struct sk_buff *skb, int queue,
242 struct ieee80211_sta *sta)
243 {
244 if (unlikely(iwl_mvm_check_pn(mvm, skb, queue, sta))) {
245 kfree_skb(skb);
246 return;
247 }
248
249 ieee80211_rx_napi(mvm->hw, sta, skb, napi);
250 }
251
iwl_mvm_used_average_energy(struct iwl_mvm * mvm,struct iwl_rx_mpdu_desc * desc,struct ieee80211_hdr * hdr,struct ieee80211_rx_status * rx_status)252 static bool iwl_mvm_used_average_energy(struct iwl_mvm *mvm,
253 struct iwl_rx_mpdu_desc *desc,
254 struct ieee80211_hdr *hdr,
255 struct ieee80211_rx_status *rx_status)
256 {
257 struct iwl_mvm_vif *mvm_vif;
258 struct ieee80211_vif *vif;
259 u32 id;
260
261 if (unlikely(!hdr || !desc))
262 return false;
263
264 if (likely(!ieee80211_is_beacon(hdr->frame_control)))
265 return false;
266
267 /* for the link conf lookup */
268 guard(rcu)();
269
270 /* MAC or link ID depending on FW, but driver has them equal */
271 id = u8_get_bits(desc->mac_phy_band,
272 IWL_RX_MPDU_MAC_PHY_BAND_MAC_MASK);
273
274 /* >= means AUX MAC/link ID, no energy correction needed then */
275 if (id >= ARRAY_SIZE(mvm->vif_id_to_mac))
276 return false;
277
278 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
279 if (!vif)
280 return false;
281
282 mvm_vif = iwl_mvm_vif_from_mac80211(vif);
283
284 /*
285 * If we know the MAC by MAC or link ID then the frame was
286 * received for the link, so by filtering it means it was
287 * from the AP the link is connected to.
288 */
289
290 /* skip also in case we don't have it (yet) */
291 if (!mvm_vif->deflink.average_beacon_energy)
292 return false;
293
294 IWL_DEBUG_STATS(mvm, "energy override by average %d\n",
295 mvm_vif->deflink.average_beacon_energy);
296 rx_status->signal = -mvm_vif->deflink.average_beacon_energy;
297 return true;
298 }
299
iwl_mvm_get_signal_strength(struct iwl_mvm * mvm,struct iwl_rx_mpdu_desc * desc,struct ieee80211_hdr * hdr,struct ieee80211_rx_status * rx_status,u32 rate_n_flags,int energy_a,int energy_b)300 static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm,
301 struct iwl_rx_mpdu_desc *desc,
302 struct ieee80211_hdr *hdr,
303 struct ieee80211_rx_status *rx_status,
304 u32 rate_n_flags, int energy_a,
305 int energy_b)
306 {
307 int max_energy;
308
309 energy_a = energy_a ? -energy_a : S8_MIN;
310 energy_b = energy_b ? -energy_b : S8_MIN;
311 max_energy = max(energy_a, energy_b);
312
313 IWL_DEBUG_STATS(mvm, "energy In A %d B %d, and max %d\n",
314 energy_a, energy_b, max_energy);
315
316 if (iwl_mvm_used_average_energy(mvm, desc, hdr, rx_status))
317 return;
318
319 rx_status->signal = max_energy;
320 rx_status->chains = u32_get_bits(rate_n_flags, RATE_MCS_ANT_AB_MSK);
321 rx_status->chain_signal[0] = energy_a;
322 rx_status->chain_signal[1] = energy_b;
323 }
324
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)325 static int iwl_mvm_rx_mgmt_prot(struct ieee80211_sta *sta,
326 struct ieee80211_hdr *hdr,
327 struct iwl_rx_mpdu_desc *desc,
328 u32 status,
329 struct ieee80211_rx_status *stats)
330 {
331 struct wireless_dev *wdev;
332 struct iwl_mvm_sta *mvmsta;
333 struct iwl_mvm_vif *mvmvif;
334 u8 keyid;
335 struct ieee80211_key_conf *key;
336 u32 len = le16_to_cpu(desc->mpdu_len);
337 const u8 *frame = (void *)hdr;
338
339 if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) == IWL_RX_MPDU_STATUS_SEC_NONE)
340 return 0;
341
342 /*
343 * For non-beacon, we don't really care. But beacons may
344 * be filtered out, and we thus need the firmware's replay
345 * detection, otherwise beacons the firmware previously
346 * filtered could be replayed, or something like that, and
347 * it can filter a lot - though usually only if nothing has
348 * changed.
349 */
350 if (!ieee80211_is_beacon(hdr->frame_control))
351 return 0;
352
353 if (!sta)
354 return -1;
355
356 mvmsta = iwl_mvm_sta_from_mac80211(sta);
357 mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
358
359 /* key mismatch - will also report !MIC_OK but we shouldn't count it */
360 if (!(status & IWL_RX_MPDU_STATUS_KEY_VALID))
361 goto report;
362
363 /* good cases */
364 if (likely(status & IWL_RX_MPDU_STATUS_MIC_OK &&
365 !(status & IWL_RX_MPDU_STATUS_REPLAY_ERROR))) {
366 stats->flag |= RX_FLAG_DECRYPTED;
367 return 0;
368 }
369
370 /*
371 * both keys will have the same cipher and MIC length, use
372 * whichever one is available
373 */
374 key = rcu_dereference(mvmvif->bcn_prot.keys[0]);
375 if (!key) {
376 key = rcu_dereference(mvmvif->bcn_prot.keys[1]);
377 if (!key)
378 goto report;
379 }
380
381 if (len < key->icv_len + IEEE80211_GMAC_PN_LEN + 2)
382 goto report;
383
384 /* get the real key ID */
385 keyid = frame[len - key->icv_len - IEEE80211_GMAC_PN_LEN - 2];
386 /* and if that's the other key, look it up */
387 if (keyid != key->keyidx) {
388 /*
389 * shouldn't happen since firmware checked, but be safe
390 * in case the MIC length is wrong too, for example
391 */
392 if (keyid != 6 && keyid != 7)
393 return -1;
394 key = rcu_dereference(mvmvif->bcn_prot.keys[keyid - 6]);
395 if (!key)
396 goto report;
397 }
398
399 /* Report status to mac80211 */
400 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
401 ieee80211_key_mic_failure(key);
402 else if (status & IWL_RX_MPDU_STATUS_REPLAY_ERROR)
403 ieee80211_key_replay(key);
404 report:
405 wdev = ieee80211_vif_to_wdev(mvmsta->vif);
406 if (wdev->netdev)
407 cfg80211_rx_unprot_mlme_mgmt(wdev->netdev, (void *)hdr, len);
408
409 return -1;
410 }
411
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)412 static int iwl_mvm_rx_crypto(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
413 struct ieee80211_hdr *hdr,
414 struct ieee80211_rx_status *stats, u16 phy_info,
415 struct iwl_rx_mpdu_desc *desc,
416 u32 pkt_flags, int queue, u8 *crypt_len)
417 {
418 u32 status = le32_to_cpu(desc->status);
419
420 /*
421 * Drop UNKNOWN frames in aggregation, unless in monitor mode
422 * (where we don't have the keys).
423 * We limit this to aggregation because in TKIP this is a valid
424 * scenario, since we may not have the (correct) TTAK (phase 1
425 * key) in the firmware.
426 */
427 if (phy_info & IWL_RX_MPDU_PHY_AMPDU &&
428 (status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
429 IWL_RX_MPDU_STATUS_SEC_UNKNOWN && !mvm->monitor_on) {
430 IWL_DEBUG_DROP(mvm, "Dropping packets, bad enc status\n");
431 return -1;
432 }
433
434 if (unlikely(ieee80211_is_mgmt(hdr->frame_control) &&
435 !ieee80211_has_protected(hdr->frame_control)))
436 return iwl_mvm_rx_mgmt_prot(sta, hdr, desc, status, stats);
437
438 if (!ieee80211_has_protected(hdr->frame_control) ||
439 (status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
440 IWL_RX_MPDU_STATUS_SEC_NONE)
441 return 0;
442
443 /* TODO: handle packets encrypted with unknown alg */
444 #if defined(__FreeBSD__)
445 /* XXX-BZ do similar to rx.c for now as these are plenty. */
446 if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
447 IWL_RX_MPDU_STATUS_SEC_ENC_ERR)
448 return (0);
449 #endif
450
451 switch (status & IWL_RX_MPDU_STATUS_SEC_MASK) {
452 case IWL_RX_MPDU_STATUS_SEC_CCM:
453 case IWL_RX_MPDU_STATUS_SEC_GCM:
454 BUILD_BUG_ON(IEEE80211_CCMP_PN_LEN != IEEE80211_GCMP_PN_LEN);
455 /* alg is CCM: check MIC only */
456 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK)) {
457 IWL_DEBUG_DROP(mvm,
458 "Dropping packet, bad MIC (CCM/GCM)\n");
459 return -1;
460 }
461
462 stats->flag |= RX_FLAG_DECRYPTED | RX_FLAG_MIC_STRIPPED;
463 *crypt_len = IEEE80211_CCMP_HDR_LEN;
464 return 0;
465 case IWL_RX_MPDU_STATUS_SEC_TKIP:
466 /* Don't drop the frame and decrypt it in SW */
467 if (!fw_has_api(&mvm->fw->ucode_capa,
468 IWL_UCODE_TLV_API_DEPRECATE_TTAK) &&
469 !(status & IWL_RX_MPDU_RES_STATUS_TTAK_OK))
470 return 0;
471
472 if (mvm->trans->mac_cfg->gen2 &&
473 !(status & RX_MPDU_RES_STATUS_MIC_OK))
474 stats->flag |= RX_FLAG_MMIC_ERROR;
475
476 *crypt_len = IEEE80211_TKIP_IV_LEN;
477 fallthrough;
478 case IWL_RX_MPDU_STATUS_SEC_WEP:
479 if (!(status & IWL_RX_MPDU_STATUS_ICV_OK))
480 return -1;
481
482 stats->flag |= RX_FLAG_DECRYPTED;
483 if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
484 IWL_RX_MPDU_STATUS_SEC_WEP)
485 *crypt_len = IEEE80211_WEP_IV_LEN;
486
487 if (pkt_flags & FH_RSCSR_RADA_EN) {
488 stats->flag |= RX_FLAG_ICV_STRIPPED;
489 if (mvm->trans->mac_cfg->gen2)
490 stats->flag |= RX_FLAG_MMIC_STRIPPED;
491 }
492
493 return 0;
494 case IWL_RX_MPDU_STATUS_SEC_EXT_ENC:
495 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
496 return -1;
497 stats->flag |= RX_FLAG_DECRYPTED;
498 return 0;
499 case RX_MPDU_RES_STATUS_SEC_CMAC_GMAC_ENC:
500 break;
501 default:
502 /*
503 * Sometimes we can get frames that were not decrypted
504 * because the firmware didn't have the keys yet. This can
505 * happen after connection where we can get multicast frames
506 * before the GTK is installed.
507 * Silently drop those frames.
508 * Also drop un-decrypted frames in monitor mode.
509 */
510 if (!is_multicast_ether_addr(hdr->addr1) &&
511 !mvm->monitor_on && net_ratelimit())
512 #if defined(__linux__)
513 IWL_WARN(mvm, "Unhandled alg: 0x%x\n", status);
514 #elif defined(__FreeBSD__)
515 IWL_WARN(mvm, "%s: Unhandled alg: 0x%x\n", __func__, status);
516 #endif
517 }
518
519 return 0;
520 }
521
iwl_mvm_rx_csum(struct iwl_mvm * mvm,struct ieee80211_sta * sta,struct sk_buff * skb,struct iwl_rx_packet * pkt)522 static void iwl_mvm_rx_csum(struct iwl_mvm *mvm,
523 struct ieee80211_sta *sta,
524 struct sk_buff *skb,
525 struct iwl_rx_packet *pkt)
526 {
527 struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
528
529 if (mvm->trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
530 if (pkt->len_n_flags & cpu_to_le32(FH_RSCSR_RPA_EN)) {
531 u16 hwsum = be16_to_cpu(desc->v3.raw_xsum);
532
533 skb->ip_summed = CHECKSUM_COMPLETE;
534 skb->csum = csum_unfold(~(__force __sum16)hwsum);
535 }
536 } else {
537 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
538 struct iwl_mvm_vif *mvmvif;
539 u16 flags = le16_to_cpu(desc->l3l4_flags);
540 u8 l3_prot = (u8)((flags & IWL_RX_L3L4_L3_PROTO_MASK) >>
541 IWL_RX_L3_PROTO_POS);
542
543 mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
544
545 if (mvmvif->features & NETIF_F_RXCSUM &&
546 flags & IWL_RX_L3L4_TCP_UDP_CSUM_OK &&
547 (flags & IWL_RX_L3L4_IP_HDR_CSUM_OK ||
548 l3_prot == IWL_RX_L3_TYPE_IPV6 ||
549 l3_prot == IWL_RX_L3_TYPE_IPV6_FRAG))
550 skb->ip_summed = CHECKSUM_UNNECESSARY;
551 }
552 }
553
554 /*
555 * returns true if a packet is a duplicate or invalid tid and should be dropped.
556 * Updates AMSDU PN tracking info
557 */
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)558 static bool iwl_mvm_is_dup(struct ieee80211_sta *sta, int queue,
559 struct ieee80211_rx_status *rx_status,
560 struct ieee80211_hdr *hdr,
561 struct iwl_rx_mpdu_desc *desc)
562 {
563 struct iwl_mvm_sta *mvm_sta;
564 struct iwl_mvm_rxq_dup_data *dup_data;
565 u8 tid, sub_frame_idx;
566
567 if (WARN_ON(IS_ERR_OR_NULL(sta)))
568 return false;
569
570 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
571
572 if (WARN_ON_ONCE(!mvm_sta->dup_data))
573 return false;
574
575 dup_data = &mvm_sta->dup_data[queue];
576
577 /*
578 * Drop duplicate 802.11 retransmissions
579 * (IEEE 802.11-2012: 9.3.2.10 "Duplicate detection and recovery")
580 */
581 if (ieee80211_is_ctl(hdr->frame_control) ||
582 ieee80211_is_any_nullfunc(hdr->frame_control) ||
583 is_multicast_ether_addr(hdr->addr1))
584 return false;
585
586 if (ieee80211_is_data_qos(hdr->frame_control)) {
587 /* frame has qos control */
588 tid = ieee80211_get_tid(hdr);
589 if (tid >= IWL_MAX_TID_COUNT)
590 return true;
591 } else {
592 tid = IWL_MAX_TID_COUNT;
593 }
594
595 /* If this wasn't a part of an A-MSDU the sub-frame index will be 0 */
596 sub_frame_idx = desc->amsdu_info &
597 IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
598
599 if (unlikely(ieee80211_has_retry(hdr->frame_control) &&
600 dup_data->last_seq[tid] == hdr->seq_ctrl &&
601 dup_data->last_sub_frame[tid] >= sub_frame_idx))
602 return true;
603
604 /* Allow same PN as the first subframe for following sub frames */
605 if (dup_data->last_seq[tid] == hdr->seq_ctrl &&
606 sub_frame_idx > dup_data->last_sub_frame[tid] &&
607 desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU)
608 rx_status->flag |= RX_FLAG_ALLOW_SAME_PN;
609
610 dup_data->last_seq[tid] = hdr->seq_ctrl;
611 dup_data->last_sub_frame[tid] = sub_frame_idx;
612
613 rx_status->flag |= RX_FLAG_DUP_VALIDATED;
614
615 return false;
616 }
617
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)618 static void iwl_mvm_release_frames(struct iwl_mvm *mvm,
619 struct ieee80211_sta *sta,
620 struct napi_struct *napi,
621 struct iwl_mvm_baid_data *baid_data,
622 struct iwl_mvm_reorder_buffer *reorder_buf,
623 u16 nssn)
624 {
625 struct iwl_mvm_reorder_buf_entry *entries =
626 &baid_data->entries[reorder_buf->queue *
627 baid_data->entries_per_queue];
628 u16 ssn = reorder_buf->head_sn;
629
630 lockdep_assert_held(&reorder_buf->lock);
631
632 while (ieee80211_sn_less(ssn, nssn)) {
633 int index = ssn % baid_data->buf_size;
634 struct sk_buff_head *skb_list = &entries[index].frames;
635 struct sk_buff *skb;
636
637 ssn = ieee80211_sn_inc(ssn);
638
639 /*
640 * Empty the list. Will have more than one frame for A-MSDU.
641 * Empty list is valid as well since nssn indicates frames were
642 * received.
643 */
644 while ((skb = __skb_dequeue(skb_list))) {
645 iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb,
646 reorder_buf->queue,
647 sta);
648 reorder_buf->num_stored--;
649 }
650 }
651 reorder_buf->head_sn = nssn;
652 }
653
iwl_mvm_del_ba(struct iwl_mvm * mvm,int queue,struct iwl_mvm_delba_data * data)654 static void iwl_mvm_del_ba(struct iwl_mvm *mvm, int queue,
655 struct iwl_mvm_delba_data *data)
656 {
657 struct iwl_mvm_baid_data *ba_data;
658 struct ieee80211_sta *sta;
659 struct iwl_mvm_reorder_buffer *reorder_buf;
660 u8 baid = data->baid;
661 u32 sta_id;
662
663 if (WARN_ONCE(baid >= IWL_MAX_BAID, "invalid BAID: %x\n", baid))
664 return;
665
666 rcu_read_lock();
667
668 ba_data = rcu_dereference(mvm->baid_map[baid]);
669 if (WARN_ON_ONCE(!ba_data))
670 goto out;
671
672 /* pick any STA ID to find the pointer */
673 sta_id = ffs(ba_data->sta_mask) - 1;
674 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
675 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
676 goto out;
677
678 reorder_buf = &ba_data->reorder_buf[queue];
679
680 /* release all frames that are in the reorder buffer to the stack */
681 spin_lock_bh(&reorder_buf->lock);
682 iwl_mvm_release_frames(mvm, sta, NULL, ba_data, reorder_buf,
683 ieee80211_sn_add(reorder_buf->head_sn,
684 ba_data->buf_size));
685 spin_unlock_bh(&reorder_buf->lock);
686
687 out:
688 rcu_read_unlock();
689 }
690
iwl_mvm_release_frames_from_notif(struct iwl_mvm * mvm,struct napi_struct * napi,u8 baid,u16 nssn,int queue)691 static void iwl_mvm_release_frames_from_notif(struct iwl_mvm *mvm,
692 struct napi_struct *napi,
693 u8 baid, u16 nssn, int queue)
694 {
695 struct ieee80211_sta *sta;
696 struct iwl_mvm_reorder_buffer *reorder_buf;
697 struct iwl_mvm_baid_data *ba_data;
698 u32 sta_id;
699
700 IWL_DEBUG_HT(mvm, "Frame release notification for BAID %u, NSSN %d\n",
701 baid, nssn);
702
703 if (IWL_FW_CHECK(mvm,
704 baid == IWL_RX_REORDER_DATA_INVALID_BAID ||
705 baid >= ARRAY_SIZE(mvm->baid_map),
706 "invalid BAID from FW: %d\n", baid))
707 return;
708
709 rcu_read_lock();
710
711 ba_data = rcu_dereference(mvm->baid_map[baid]);
712 if (!ba_data) {
713 IWL_DEBUG_RX(mvm,
714 "Got valid BAID %d but not allocated, invalid frame release!\n",
715 baid);
716 goto out;
717 }
718
719 /* pick any STA ID to find the pointer */
720 sta_id = ffs(ba_data->sta_mask) - 1;
721 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
722 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
723 goto out;
724
725 reorder_buf = &ba_data->reorder_buf[queue];
726
727 spin_lock_bh(&reorder_buf->lock);
728 iwl_mvm_release_frames(mvm, sta, napi, ba_data,
729 reorder_buf, nssn);
730 spin_unlock_bh(&reorder_buf->lock);
731
732 out:
733 rcu_read_unlock();
734 }
735
iwl_mvm_rx_queue_notif(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)736 void iwl_mvm_rx_queue_notif(struct iwl_mvm *mvm, struct napi_struct *napi,
737 struct iwl_rx_cmd_buffer *rxb, int queue)
738 {
739 struct iwl_rx_packet *pkt = rxb_addr(rxb);
740 struct iwl_rxq_sync_notification *notif;
741 struct iwl_mvm_internal_rxq_notif *internal_notif;
742 u32 len = iwl_rx_packet_payload_len(pkt);
743
744 notif = (void *)pkt->data;
745 internal_notif = (void *)notif->payload;
746
747 if (WARN_ONCE(len < sizeof(*notif) + sizeof(*internal_notif),
748 "invalid notification size %d (%d)",
749 len, (int)(sizeof(*notif) + sizeof(*internal_notif))))
750 return;
751 len -= sizeof(*notif) + sizeof(*internal_notif);
752
753 if (WARN_ONCE(internal_notif->sync &&
754 mvm->queue_sync_cookie != internal_notif->cookie,
755 "Received expired RX queue sync message (cookie %d but wanted %d, queue %d)\n",
756 internal_notif->cookie, mvm->queue_sync_cookie, queue))
757 return;
758
759 switch (internal_notif->type) {
760 case IWL_MVM_RXQ_EMPTY:
761 WARN_ONCE(len, "invalid empty notification size %d", len);
762 break;
763 case IWL_MVM_RXQ_NOTIF_DEL_BA:
764 if (WARN_ONCE(len != sizeof(struct iwl_mvm_delba_data),
765 "invalid delba notification size %d (%d)",
766 len, (int)sizeof(struct iwl_mvm_delba_data)))
767 break;
768 iwl_mvm_del_ba(mvm, queue, (void *)internal_notif->data);
769 break;
770 default:
771 WARN_ONCE(1, "Invalid identifier %d", internal_notif->type);
772 }
773
774 if (internal_notif->sync) {
775 WARN_ONCE(!test_and_clear_bit(queue, &mvm->queue_sync_state),
776 "queue sync: queue %d responded a second time!\n",
777 queue);
778 if (READ_ONCE(mvm->queue_sync_state) == 0)
779 wake_up(&mvm->rx_sync_waitq);
780 }
781 }
782
783 /*
784 * Returns true if the MPDU was buffered\dropped, false if it should be passed
785 * to upper layer.
786 */
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)787 static bool iwl_mvm_reorder(struct iwl_mvm *mvm,
788 struct napi_struct *napi,
789 int queue,
790 struct ieee80211_sta *sta,
791 struct sk_buff *skb,
792 struct iwl_rx_mpdu_desc *desc)
793 {
794 struct ieee80211_hdr *hdr = (void *)skb_mac_header(skb);
795 struct iwl_mvm_baid_data *baid_data;
796 struct iwl_mvm_reorder_buffer *buffer;
797 u32 reorder = le32_to_cpu(desc->reorder_data);
798 bool amsdu = desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU;
799 bool last_subframe =
800 desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME;
801 #if defined(__linux__)
802 u8 tid = ieee80211_get_tid(hdr);
803 #elif defined(__FreeBSD__)
804 u8 tid;
805 #endif
806 struct iwl_mvm_reorder_buf_entry *entries;
807 u32 sta_mask;
808 int index;
809 u16 nssn, sn;
810 u8 baid;
811
812 baid = (reorder & IWL_RX_MPDU_REORDER_BAID_MASK) >>
813 IWL_RX_MPDU_REORDER_BAID_SHIFT;
814
815 if (mvm->trans->mac_cfg->device_family == IWL_DEVICE_FAMILY_9000)
816 return false;
817
818 /*
819 * This also covers the case of receiving a Block Ack Request
820 * outside a BA session; we'll pass it to mac80211 and that
821 * then sends a delBA action frame.
822 * This also covers pure monitor mode, in which case we won't
823 * have any BA sessions.
824 */
825 if (baid == IWL_RX_REORDER_DATA_INVALID_BAID)
826 return false;
827
828 /* no sta yet */
829 if (WARN_ONCE(IS_ERR_OR_NULL(sta),
830 "Got valid BAID without a valid station assigned\n"))
831 return false;
832
833 /* not a data packet or a bar */
834 if (!ieee80211_is_back_req(hdr->frame_control) &&
835 (!ieee80211_is_data_qos(hdr->frame_control) ||
836 is_multicast_ether_addr(hdr->addr1)))
837 return false;
838
839 if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
840 return false;
841
842 baid_data = rcu_dereference(mvm->baid_map[baid]);
843 if (!baid_data) {
844 IWL_DEBUG_RX(mvm,
845 "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
846 baid, reorder);
847 return false;
848 }
849
850 #if defined(__FreeBSD__)
851 tid = ieee80211_get_tid(hdr);
852 #endif
853 sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1);
854
855 if (IWL_FW_CHECK(mvm,
856 tid != baid_data->tid ||
857 !(sta_mask & baid_data->sta_mask),
858 "baid 0x%x is mapped to sta_mask:0x%x tid:%d, but was received for sta_mask:0x%x tid:%d\n",
859 baid, baid_data->sta_mask, baid_data->tid,
860 sta_mask, tid))
861 return false;
862
863 nssn = reorder & IWL_RX_MPDU_REORDER_NSSN_MASK;
864 sn = (reorder & IWL_RX_MPDU_REORDER_SN_MASK) >>
865 IWL_RX_MPDU_REORDER_SN_SHIFT;
866
867 buffer = &baid_data->reorder_buf[queue];
868 entries = &baid_data->entries[queue * baid_data->entries_per_queue];
869
870 spin_lock_bh(&buffer->lock);
871
872 if (!buffer->valid) {
873 if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN) {
874 spin_unlock_bh(&buffer->lock);
875 return false;
876 }
877 buffer->valid = true;
878 }
879
880 /* drop any duplicated packets */
881 if (desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_DUPLICATE))
882 goto drop;
883
884 /* drop any oudated packets */
885 if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN)
886 goto drop;
887
888 /* release immediately if allowed by nssn and no stored frames */
889 if (!buffer->num_stored && ieee80211_sn_less(sn, nssn)) {
890 if (!amsdu || last_subframe)
891 buffer->head_sn = nssn;
892
893 spin_unlock_bh(&buffer->lock);
894 return false;
895 }
896
897 /*
898 * release immediately if there are no stored frames, and the sn is
899 * equal to the head.
900 * This can happen due to reorder timer, where NSSN is behind head_sn.
901 * When we released everything, and we got the next frame in the
902 * sequence, according to the NSSN we can't release immediately,
903 * while technically there is no hole and we can move forward.
904 */
905 if (!buffer->num_stored && sn == buffer->head_sn) {
906 if (!amsdu || last_subframe)
907 buffer->head_sn = ieee80211_sn_inc(buffer->head_sn);
908
909 spin_unlock_bh(&buffer->lock);
910 return false;
911 }
912
913 /* put in reorder buffer */
914 index = sn % baid_data->buf_size;
915 __skb_queue_tail(&entries[index].frames, skb);
916 buffer->num_stored++;
917
918 /*
919 * We cannot trust NSSN for AMSDU sub-frames that are not the last.
920 * The reason is that NSSN advances on the first sub-frame, and may
921 * cause the reorder buffer to advance before all the sub-frames arrive.
922 * Example: reorder buffer contains SN 0 & 2, and we receive AMSDU with
923 * SN 1. NSSN for first sub frame will be 3 with the result of driver
924 * releasing SN 0,1, 2. When sub-frame 1 arrives - reorder buffer is
925 * already ahead and it will be dropped.
926 * If the last sub-frame is not on this queue - we will get frame
927 * release notification with up to date NSSN.
928 * If this is the first frame that is stored in the buffer, the head_sn
929 * may be outdated. Update it based on the last NSSN to make sure it
930 * will be released when the frame release notification arrives.
931 */
932 if (!amsdu || last_subframe)
933 iwl_mvm_release_frames(mvm, sta, napi, baid_data,
934 buffer, nssn);
935 else if (buffer->num_stored == 1)
936 buffer->head_sn = nssn;
937
938 spin_unlock_bh(&buffer->lock);
939 return true;
940
941 drop:
942 kfree_skb(skb);
943 spin_unlock_bh(&buffer->lock);
944 return true;
945 }
946
iwl_mvm_agg_rx_received(struct iwl_mvm * mvm,u32 reorder_data,u8 baid)947 static void iwl_mvm_agg_rx_received(struct iwl_mvm *mvm,
948 u32 reorder_data, u8 baid)
949 {
950 unsigned long now = jiffies;
951 unsigned long timeout;
952 struct iwl_mvm_baid_data *data;
953
954 rcu_read_lock();
955
956 data = rcu_dereference(mvm->baid_map[baid]);
957 if (!data) {
958 IWL_DEBUG_RX(mvm,
959 "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
960 baid, reorder_data);
961 goto out;
962 }
963
964 if (!data->timeout)
965 goto out;
966
967 timeout = data->timeout;
968 /*
969 * Do not update last rx all the time to avoid cache bouncing
970 * between the rx queues.
971 * Update it every timeout. Worst case is the session will
972 * expire after ~ 2 * timeout, which doesn't matter that much.
973 */
974 if (time_before(data->last_rx + TU_TO_JIFFIES(timeout), now))
975 /* Update is atomic */
976 data->last_rx = now;
977
978 out:
979 rcu_read_unlock();
980 }
981
iwl_mvm_flip_address(u8 * addr)982 static void iwl_mvm_flip_address(u8 *addr)
983 {
984 int i;
985 u8 mac_addr[ETH_ALEN];
986
987 for (i = 0; i < ETH_ALEN; i++)
988 mac_addr[i] = addr[ETH_ALEN - i - 1];
989 ether_addr_copy(addr, mac_addr);
990 }
991
992 struct iwl_mvm_rx_phy_data {
993 enum iwl_rx_phy_info_type info_type;
994 __le32 d0, d1, d2, d3, eht_d4, d5;
995 __le16 d4;
996 bool with_data;
997 bool first_subframe;
998 __le32 rx_vec[4];
999
1000 u32 rate_n_flags;
1001 u32 gp2_on_air_rise;
1002 u16 phy_info;
1003 u8 energy_a, energy_b;
1004 u8 channel;
1005 };
1006
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)1007 static void iwl_mvm_decode_he_mu_ext(struct iwl_mvm *mvm,
1008 struct iwl_mvm_rx_phy_data *phy_data,
1009 struct ieee80211_radiotap_he_mu *he_mu)
1010 {
1011 u32 phy_data2 = le32_to_cpu(phy_data->d2);
1012 u32 phy_data3 = le32_to_cpu(phy_data->d3);
1013 u16 phy_data4 = le16_to_cpu(phy_data->d4);
1014 u32 rate_n_flags = phy_data->rate_n_flags;
1015
1016 if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CRC_OK, phy_data4)) {
1017 he_mu->flags1 |=
1018 cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_RU_KNOWN |
1019 IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU_KNOWN);
1020
1021 he_mu->flags1 |=
1022 le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CTR_RU,
1023 phy_data4),
1024 IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU);
1025
1026 he_mu->ru_ch1[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU0,
1027 phy_data2);
1028 he_mu->ru_ch1[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU1,
1029 phy_data3);
1030 he_mu->ru_ch1[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU2,
1031 phy_data2);
1032 he_mu->ru_ch1[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU3,
1033 phy_data3);
1034 }
1035
1036 if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CRC_OK, phy_data4) &&
1037 (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) != RATE_MCS_CHAN_WIDTH_20) {
1038 he_mu->flags1 |=
1039 cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_RU_KNOWN |
1040 IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_CTR_26T_RU_KNOWN);
1041
1042 he_mu->flags2 |=
1043 le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CTR_RU,
1044 phy_data4),
1045 IEEE80211_RADIOTAP_HE_MU_FLAGS2_CH2_CTR_26T_RU);
1046
1047 he_mu->ru_ch2[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU0,
1048 phy_data2);
1049 he_mu->ru_ch2[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU1,
1050 phy_data3);
1051 he_mu->ru_ch2[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU2,
1052 phy_data2);
1053 he_mu->ru_ch2[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU3,
1054 phy_data3);
1055 }
1056 }
1057
1058 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)1059 iwl_mvm_decode_he_phy_ru_alloc(struct iwl_mvm_rx_phy_data *phy_data,
1060 struct ieee80211_radiotap_he *he,
1061 struct ieee80211_radiotap_he_mu *he_mu,
1062 struct ieee80211_rx_status *rx_status)
1063 {
1064 /*
1065 * Unfortunately, we have to leave the mac80211 data
1066 * incorrect for the case that we receive an HE-MU
1067 * transmission and *don't* have the HE phy data (due
1068 * to the bits being used for TSF). This shouldn't
1069 * happen though as management frames where we need
1070 * the TSF/timers are not be transmitted in HE-MU.
1071 */
1072 u8 ru = le32_get_bits(phy_data->d1, IWL_RX_PHY_DATA1_HE_RU_ALLOC_MASK);
1073 u32 rate_n_flags = phy_data->rate_n_flags;
1074 u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1075 u8 offs = 0;
1076
1077 rx_status->bw = RATE_INFO_BW_HE_RU;
1078
1079 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
1080
1081 switch (ru) {
1082 case 0 ... 36:
1083 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26;
1084 offs = ru;
1085 break;
1086 case 37 ... 52:
1087 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52;
1088 offs = ru - 37;
1089 break;
1090 case 53 ... 60:
1091 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
1092 offs = ru - 53;
1093 break;
1094 case 61 ... 64:
1095 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242;
1096 offs = ru - 61;
1097 break;
1098 case 65 ... 66:
1099 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484;
1100 offs = ru - 65;
1101 break;
1102 case 67:
1103 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996;
1104 break;
1105 case 68:
1106 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996;
1107 break;
1108 }
1109 he->data2 |= le16_encode_bits(offs,
1110 IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET);
1111 he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_KNOWN |
1112 IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET_KNOWN);
1113 if (phy_data->d1 & cpu_to_le32(IWL_RX_PHY_DATA1_HE_RU_ALLOC_SEC80))
1114 he->data2 |=
1115 cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_SEC);
1116
1117 #define CHECK_BW(bw) \
1118 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_ ## bw ## MHZ != \
1119 RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS); \
1120 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_ ## bw ## MHZ != \
1121 RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS)
1122 CHECK_BW(20);
1123 CHECK_BW(40);
1124 CHECK_BW(80);
1125 CHECK_BW(160);
1126
1127 if (he_mu)
1128 he_mu->flags2 |=
1129 le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK,
1130 rate_n_flags),
1131 IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW);
1132 else if (he_type == RATE_MCS_HE_TYPE_TRIG)
1133 he->data6 |=
1134 cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_KNOWN) |
1135 le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK,
1136 rate_n_flags),
1137 IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW);
1138 }
1139
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)1140 static void iwl_mvm_decode_he_phy_data(struct iwl_mvm *mvm,
1141 struct iwl_mvm_rx_phy_data *phy_data,
1142 struct ieee80211_radiotap_he *he,
1143 struct ieee80211_radiotap_he_mu *he_mu,
1144 struct ieee80211_rx_status *rx_status,
1145 int queue)
1146 {
1147 switch (phy_data->info_type) {
1148 case IWL_RX_PHY_INFO_TYPE_NONE:
1149 case IWL_RX_PHY_INFO_TYPE_CCK:
1150 case IWL_RX_PHY_INFO_TYPE_OFDM_LGCY:
1151 case IWL_RX_PHY_INFO_TYPE_HT:
1152 case IWL_RX_PHY_INFO_TYPE_VHT_SU:
1153 case IWL_RX_PHY_INFO_TYPE_VHT_MU:
1154 case IWL_RX_PHY_INFO_TYPE_EHT_MU:
1155 case IWL_RX_PHY_INFO_TYPE_EHT_TB:
1156 case IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT:
1157 case IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT:
1158 return;
1159 case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1160 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN |
1161 IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE2_KNOWN |
1162 IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE3_KNOWN |
1163 IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE4_KNOWN);
1164 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1165 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE1),
1166 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE1);
1167 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1168 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE2),
1169 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE2);
1170 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1171 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE3),
1172 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE3);
1173 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1174 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE4),
1175 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE4);
1176 fallthrough;
1177 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1178 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1179 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1180 case IWL_RX_PHY_INFO_TYPE_HE_TB:
1181 /* HE common */
1182 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_LDPC_XSYMSEG_KNOWN |
1183 IEEE80211_RADIOTAP_HE_DATA1_DOPPLER_KNOWN |
1184 IEEE80211_RADIOTAP_HE_DATA1_BSS_COLOR_KNOWN);
1185 he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRE_FEC_PAD_KNOWN |
1186 IEEE80211_RADIOTAP_HE_DATA2_PE_DISAMBIG_KNOWN |
1187 IEEE80211_RADIOTAP_HE_DATA2_TXOP_KNOWN |
1188 IEEE80211_RADIOTAP_HE_DATA2_NUM_LTF_SYMS_KNOWN);
1189 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1190 IWL_RX_PHY_DATA0_HE_BSS_COLOR_MASK),
1191 IEEE80211_RADIOTAP_HE_DATA3_BSS_COLOR);
1192 if (phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB &&
1193 phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB_EXT) {
1194 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_UL_DL_KNOWN);
1195 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1196 IWL_RX_PHY_DATA0_HE_UPLINK),
1197 IEEE80211_RADIOTAP_HE_DATA3_UL_DL);
1198 }
1199 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1200 IWL_RX_PHY_DATA0_HE_LDPC_EXT_SYM),
1201 IEEE80211_RADIOTAP_HE_DATA3_LDPC_XSYMSEG);
1202 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1203 IWL_RX_PHY_DATA0_HE_PRE_FEC_PAD_MASK),
1204 IEEE80211_RADIOTAP_HE_DATA5_PRE_FEC_PAD);
1205 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1206 IWL_RX_PHY_DATA0_HE_PE_DISAMBIG),
1207 IEEE80211_RADIOTAP_HE_DATA5_PE_DISAMBIG);
1208 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d1,
1209 IWL_RX_PHY_DATA1_HE_LTF_NUM_MASK),
1210 IEEE80211_RADIOTAP_HE_DATA5_NUM_LTF_SYMS);
1211 he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1212 IWL_RX_PHY_DATA0_HE_TXOP_DUR_MASK),
1213 IEEE80211_RADIOTAP_HE_DATA6_TXOP);
1214 he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1215 IWL_RX_PHY_DATA0_HE_DOPPLER),
1216 IEEE80211_RADIOTAP_HE_DATA6_DOPPLER);
1217 break;
1218 }
1219
1220 switch (phy_data->info_type) {
1221 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1222 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1223 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1224 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN);
1225 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1226 IWL_RX_PHY_DATA0_HE_SPATIAL_REUSE_MASK),
1227 IEEE80211_RADIOTAP_HE_DATA4_SU_MU_SPTL_REUSE);
1228 break;
1229 default:
1230 /* nothing here */
1231 break;
1232 }
1233
1234 switch (phy_data->info_type) {
1235 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1236 he_mu->flags1 |=
1237 le16_encode_bits(le16_get_bits(phy_data->d4,
1238 IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_DCM),
1239 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM);
1240 he_mu->flags1 |=
1241 le16_encode_bits(le16_get_bits(phy_data->d4,
1242 IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_MCS_MASK),
1243 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS);
1244 he_mu->flags2 |=
1245 le16_encode_bits(le16_get_bits(phy_data->d4,
1246 IWL_RX_PHY_DATA4_HE_MU_EXT_PREAMBLE_PUNC_TYPE_MASK),
1247 IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW);
1248 iwl_mvm_decode_he_mu_ext(mvm, phy_data, he_mu);
1249 fallthrough;
1250 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1251 he_mu->flags2 |=
1252 le16_encode_bits(le32_get_bits(phy_data->d1,
1253 IWL_RX_PHY_DATA1_HE_MU_SIBG_SYM_OR_USER_NUM_MASK),
1254 IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_SYMS_USERS);
1255 he_mu->flags2 |=
1256 le16_encode_bits(le32_get_bits(phy_data->d1,
1257 IWL_RX_PHY_DATA1_HE_MU_SIGB_COMPRESSION),
1258 IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_COMP);
1259 fallthrough;
1260 case IWL_RX_PHY_INFO_TYPE_HE_TB:
1261 case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1262 iwl_mvm_decode_he_phy_ru_alloc(phy_data, he, he_mu, rx_status);
1263 break;
1264 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1265 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BEAM_CHANGE_KNOWN);
1266 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1267 IWL_RX_PHY_DATA0_HE_BEAM_CHNG),
1268 IEEE80211_RADIOTAP_HE_DATA3_BEAM_CHANGE);
1269 break;
1270 default:
1271 /* nothing */
1272 break;
1273 }
1274 }
1275
1276 #define LE32_DEC_ENC(value, dec_bits, enc_bits) \
1277 le32_encode_bits(le32_get_bits(value, dec_bits), enc_bits)
1278
1279 #define IWL_MVM_ENC_USIG_VALUE_MASK(usig, in_value, dec_bits, enc_bits) do { \
1280 typeof(enc_bits) _enc_bits = enc_bits; \
1281 typeof(usig) _usig = usig; \
1282 (_usig)->mask |= cpu_to_le32(_enc_bits); \
1283 (_usig)->value |= LE32_DEC_ENC(in_value, dec_bits, _enc_bits); \
1284 } while (0)
1285
1286 #define __IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru) \
1287 eht->data[(rt_data)] |= \
1288 (cpu_to_le32 \
1289 (IEEE80211_RADIOTAP_EHT_DATA ## rt_data ## _RU_ALLOC_CC_ ## rt_ru ## _KNOWN) | \
1290 LE32_DEC_ENC(data ## fw_data, \
1291 IWL_RX_PHY_DATA ## fw_data ## _EHT_MU_EXT_RU_ALLOC_ ## fw_ru, \
1292 IEEE80211_RADIOTAP_EHT_DATA ## rt_data ## _RU_ALLOC_CC_ ## rt_ru))
1293
1294 #define _IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru) \
1295 __IWL_MVM_ENC_EHT_RU(rt_data, rt_ru, fw_data, fw_ru)
1296
1297 #define IEEE80211_RADIOTAP_RU_DATA_1_1_1 1
1298 #define IEEE80211_RADIOTAP_RU_DATA_2_1_1 2
1299 #define IEEE80211_RADIOTAP_RU_DATA_1_1_2 2
1300 #define IEEE80211_RADIOTAP_RU_DATA_2_1_2 2
1301 #define IEEE80211_RADIOTAP_RU_DATA_1_2_1 3
1302 #define IEEE80211_RADIOTAP_RU_DATA_2_2_1 3
1303 #define IEEE80211_RADIOTAP_RU_DATA_1_2_2 3
1304 #define IEEE80211_RADIOTAP_RU_DATA_2_2_2 4
1305
1306 #define IWL_RX_RU_DATA_A1 2
1307 #define IWL_RX_RU_DATA_A2 2
1308 #define IWL_RX_RU_DATA_B1 2
1309 #define IWL_RX_RU_DATA_B2 4
1310 #define IWL_RX_RU_DATA_C1 3
1311 #define IWL_RX_RU_DATA_C2 3
1312 #define IWL_RX_RU_DATA_D1 4
1313 #define IWL_RX_RU_DATA_D2 4
1314
1315 #define IWL_MVM_ENC_EHT_RU(rt_ru, fw_ru) \
1316 _IWL_MVM_ENC_EHT_RU(IEEE80211_RADIOTAP_RU_DATA_ ## rt_ru, \
1317 rt_ru, \
1318 IWL_RX_RU_DATA_ ## fw_ru, \
1319 fw_ru)
1320
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)1321 static void iwl_mvm_decode_eht_ext_mu(struct iwl_mvm *mvm,
1322 struct iwl_mvm_rx_phy_data *phy_data,
1323 struct ieee80211_rx_status *rx_status,
1324 struct ieee80211_radiotap_eht *eht,
1325 struct ieee80211_radiotap_eht_usig *usig)
1326 {
1327 if (phy_data->with_data) {
1328 __le32 data1 = phy_data->d1;
1329 __le32 data2 = phy_data->d2;
1330 __le32 data3 = phy_data->d3;
1331 __le32 data4 = phy_data->eht_d4;
1332 __le32 data5 = phy_data->d5;
1333 u32 phy_bw = phy_data->rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK;
1334
1335 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1336 IWL_RX_PHY_DATA5_EHT_TYPE_AND_COMP,
1337 IEEE80211_RADIOTAP_EHT_USIG2_MU_B0_B1_PPDU_TYPE);
1338 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1339 IWL_RX_PHY_DATA5_EHT_MU_PUNC_CH_CODE,
1340 IEEE80211_RADIOTAP_EHT_USIG2_MU_B3_B7_PUNCTURED_INFO);
1341 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data4,
1342 IWL_RX_PHY_DATA4_EHT_MU_EXT_SIGB_MCS,
1343 IEEE80211_RADIOTAP_EHT_USIG2_MU_B9_B10_SIG_MCS);
1344 IWL_MVM_ENC_USIG_VALUE_MASK
1345 (usig, data1, IWL_RX_PHY_DATA1_EHT_MU_NUM_SIG_SYM_USIGA2,
1346 IEEE80211_RADIOTAP_EHT_USIG2_MU_B11_B15_EHT_SIG_SYMBOLS);
1347
1348 eht->user_info[0] |=
1349 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_STA_ID_KNOWN) |
1350 LE32_DEC_ENC(data5, IWL_RX_PHY_DATA5_EHT_MU_STA_ID_USR,
1351 IEEE80211_RADIOTAP_EHT_USER_INFO_STA_ID);
1352
1353 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_NR_NON_OFDMA_USERS_M);
1354 eht->data[7] |= LE32_DEC_ENC
1355 (data5, IWL_RX_PHY_DATA5_EHT_MU_NUM_USR_NON_OFDMA,
1356 IEEE80211_RADIOTAP_EHT_DATA7_NUM_OF_NON_OFDMA_USERS);
1357
1358 /*
1359 * Hardware labels the content channels/RU allocation values
1360 * as follows:
1361 * Content Channel 1 Content Channel 2
1362 * 20 MHz: A1
1363 * 40 MHz: A1 B1
1364 * 80 MHz: A1 C1 B1 D1
1365 * 160 MHz: A1 C1 A2 C2 B1 D1 B2 D2
1366 * 320 MHz: A1 C1 A2 C2 A3 C3 A4 C4 B1 D1 B2 D2 B3 D3 B4 D4
1367 *
1368 * However firmware can only give us A1-D2, so the higher
1369 * frequencies are missing.
1370 */
1371
1372 switch (phy_bw) {
1373 case RATE_MCS_CHAN_WIDTH_320:
1374 /* additional values are missing in RX metadata */
1375 case RATE_MCS_CHAN_WIDTH_160:
1376 /* content channel 1 */
1377 IWL_MVM_ENC_EHT_RU(1_2_1, A2);
1378 IWL_MVM_ENC_EHT_RU(1_2_2, C2);
1379 /* content channel 2 */
1380 IWL_MVM_ENC_EHT_RU(2_2_1, B2);
1381 IWL_MVM_ENC_EHT_RU(2_2_2, D2);
1382 fallthrough;
1383 case RATE_MCS_CHAN_WIDTH_80:
1384 /* content channel 1 */
1385 IWL_MVM_ENC_EHT_RU(1_1_2, C1);
1386 /* content channel 2 */
1387 IWL_MVM_ENC_EHT_RU(2_1_2, D1);
1388 fallthrough;
1389 case RATE_MCS_CHAN_WIDTH_40:
1390 /* content channel 2 */
1391 IWL_MVM_ENC_EHT_RU(2_1_1, B1);
1392 fallthrough;
1393 case RATE_MCS_CHAN_WIDTH_20:
1394 IWL_MVM_ENC_EHT_RU(1_1_1, A1);
1395 break;
1396 }
1397 } else {
1398 __le32 usig_a1 = phy_data->rx_vec[0];
1399 __le32 usig_a2 = phy_data->rx_vec[1];
1400
1401 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
1402 IWL_RX_USIG_A1_DISREGARD,
1403 IEEE80211_RADIOTAP_EHT_USIG1_MU_B20_B24_DISREGARD);
1404 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
1405 IWL_RX_USIG_A1_VALIDATE,
1406 IEEE80211_RADIOTAP_EHT_USIG1_MU_B25_VALIDATE);
1407 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1408 IWL_RX_USIG_A2_EHT_PPDU_TYPE,
1409 IEEE80211_RADIOTAP_EHT_USIG2_MU_B0_B1_PPDU_TYPE);
1410 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1411 IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B2,
1412 IEEE80211_RADIOTAP_EHT_USIG2_MU_B2_VALIDATE);
1413 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1414 IWL_RX_USIG_A2_EHT_PUNC_CHANNEL,
1415 IEEE80211_RADIOTAP_EHT_USIG2_MU_B3_B7_PUNCTURED_INFO);
1416 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1417 IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B8,
1418 IEEE80211_RADIOTAP_EHT_USIG2_MU_B8_VALIDATE);
1419 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1420 IWL_RX_USIG_A2_EHT_SIG_MCS,
1421 IEEE80211_RADIOTAP_EHT_USIG2_MU_B9_B10_SIG_MCS);
1422 IWL_MVM_ENC_USIG_VALUE_MASK
1423 (usig, usig_a2, IWL_RX_USIG_A2_EHT_SIG_SYM_NUM,
1424 IEEE80211_RADIOTAP_EHT_USIG2_MU_B11_B15_EHT_SIG_SYMBOLS);
1425 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1426 IWL_RX_USIG_A2_EHT_CRC_OK,
1427 IEEE80211_RADIOTAP_EHT_USIG2_MU_B16_B19_CRC);
1428 }
1429 }
1430
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)1431 static void iwl_mvm_decode_eht_ext_tb(struct iwl_mvm *mvm,
1432 struct iwl_mvm_rx_phy_data *phy_data,
1433 struct ieee80211_rx_status *rx_status,
1434 struct ieee80211_radiotap_eht *eht,
1435 struct ieee80211_radiotap_eht_usig *usig)
1436 {
1437 if (phy_data->with_data) {
1438 __le32 data5 = phy_data->d5;
1439
1440 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1441 IWL_RX_PHY_DATA5_EHT_TYPE_AND_COMP,
1442 IEEE80211_RADIOTAP_EHT_USIG2_TB_B0_B1_PPDU_TYPE);
1443 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1444 IWL_RX_PHY_DATA5_EHT_TB_SPATIAL_REUSE1,
1445 IEEE80211_RADIOTAP_EHT_USIG2_TB_B3_B6_SPATIAL_REUSE_1);
1446
1447 IWL_MVM_ENC_USIG_VALUE_MASK(usig, data5,
1448 IWL_RX_PHY_DATA5_EHT_TB_SPATIAL_REUSE2,
1449 IEEE80211_RADIOTAP_EHT_USIG2_TB_B7_B10_SPATIAL_REUSE_2);
1450 } else {
1451 __le32 usig_a1 = phy_data->rx_vec[0];
1452 __le32 usig_a2 = phy_data->rx_vec[1];
1453
1454 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a1,
1455 IWL_RX_USIG_A1_DISREGARD,
1456 IEEE80211_RADIOTAP_EHT_USIG1_TB_B20_B25_DISREGARD);
1457 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1458 IWL_RX_USIG_A2_EHT_PPDU_TYPE,
1459 IEEE80211_RADIOTAP_EHT_USIG2_TB_B0_B1_PPDU_TYPE);
1460 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1461 IWL_RX_USIG_A2_EHT_USIG2_VALIDATE_B2,
1462 IEEE80211_RADIOTAP_EHT_USIG2_TB_B2_VALIDATE);
1463 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1464 IWL_RX_USIG_A2_EHT_TRIG_SPATIAL_REUSE_1,
1465 IEEE80211_RADIOTAP_EHT_USIG2_TB_B3_B6_SPATIAL_REUSE_1);
1466 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1467 IWL_RX_USIG_A2_EHT_TRIG_SPATIAL_REUSE_2,
1468 IEEE80211_RADIOTAP_EHT_USIG2_TB_B7_B10_SPATIAL_REUSE_2);
1469 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1470 IWL_RX_USIG_A2_EHT_TRIG_USIG2_DISREGARD,
1471 IEEE80211_RADIOTAP_EHT_USIG2_TB_B11_B15_DISREGARD);
1472 IWL_MVM_ENC_USIG_VALUE_MASK(usig, usig_a2,
1473 IWL_RX_USIG_A2_EHT_CRC_OK,
1474 IEEE80211_RADIOTAP_EHT_USIG2_TB_B16_B19_CRC);
1475 }
1476 }
1477
iwl_mvm_decode_eht_ru(struct iwl_mvm * mvm,struct ieee80211_rx_status * rx_status,struct ieee80211_radiotap_eht * eht)1478 static void iwl_mvm_decode_eht_ru(struct iwl_mvm *mvm,
1479 struct ieee80211_rx_status *rx_status,
1480 struct ieee80211_radiotap_eht *eht)
1481 {
1482 u32 ru = le32_get_bits(eht->data[8],
1483 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B7_B1);
1484 enum nl80211_eht_ru_alloc nl_ru;
1485
1486 /* Using D1.5 Table 9-53a - Encoding of PS160 and RU Allocation subfields
1487 * in an EHT variant User Info field
1488 */
1489
1490 switch (ru) {
1491 case 0 ... 36:
1492 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_26;
1493 break;
1494 case 37 ... 52:
1495 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_52;
1496 break;
1497 case 53 ... 60:
1498 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_106;
1499 break;
1500 case 61 ... 64:
1501 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_242;
1502 break;
1503 case 65 ... 66:
1504 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_484;
1505 break;
1506 case 67:
1507 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996;
1508 break;
1509 case 68:
1510 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_2x996;
1511 break;
1512 case 69:
1513 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_4x996;
1514 break;
1515 case 70 ... 81:
1516 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_52P26;
1517 break;
1518 case 82 ... 89:
1519 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_106P26;
1520 break;
1521 case 90 ... 93:
1522 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_484P242;
1523 break;
1524 case 94 ... 95:
1525 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996P484;
1526 break;
1527 case 96 ... 99:
1528 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_996P484P242;
1529 break;
1530 case 100 ... 103:
1531 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_2x996P484;
1532 break;
1533 case 104:
1534 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_3x996;
1535 break;
1536 case 105 ... 106:
1537 nl_ru = NL80211_RATE_INFO_EHT_RU_ALLOC_3x996P484;
1538 break;
1539 default:
1540 return;
1541 }
1542
1543 rx_status->bw = RATE_INFO_BW_EHT_RU;
1544 rx_status->eht.ru = nl_ru;
1545 }
1546
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)1547 static void iwl_mvm_decode_eht_phy_data(struct iwl_mvm *mvm,
1548 struct iwl_mvm_rx_phy_data *phy_data,
1549 struct ieee80211_rx_status *rx_status,
1550 struct ieee80211_radiotap_eht *eht,
1551 struct ieee80211_radiotap_eht_usig *usig)
1552
1553 {
1554 __le32 data0 = phy_data->d0;
1555 __le32 data1 = phy_data->d1;
1556 __le32 usig_a1 = phy_data->rx_vec[0];
1557 u8 info_type = phy_data->info_type;
1558
1559 /* Not in EHT range */
1560 if (info_type < IWL_RX_PHY_INFO_TYPE_EHT_MU ||
1561 info_type > IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT)
1562 return;
1563
1564 usig->common |= cpu_to_le32
1565 (IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL_KNOWN |
1566 IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR_KNOWN);
1567 if (phy_data->with_data) {
1568 usig->common |= LE32_DEC_ENC(data0,
1569 IWL_RX_PHY_DATA0_EHT_UPLINK,
1570 IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL);
1571 usig->common |= LE32_DEC_ENC(data0,
1572 IWL_RX_PHY_DATA0_EHT_BSS_COLOR_MASK,
1573 IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR);
1574 } else {
1575 usig->common |= LE32_DEC_ENC(usig_a1,
1576 IWL_RX_USIG_A1_UL_FLAG,
1577 IEEE80211_RADIOTAP_EHT_USIG_COMMON_UL_DL);
1578 usig->common |= LE32_DEC_ENC(usig_a1,
1579 IWL_RX_USIG_A1_BSS_COLOR,
1580 IEEE80211_RADIOTAP_EHT_USIG_COMMON_BSS_COLOR);
1581 }
1582
1583 if (fw_has_capa(&mvm->fw->ucode_capa,
1584 IWL_UCODE_TLV_CAPA_SNIFF_VALIDATE_SUPPORT)) {
1585 usig->common |=
1586 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_VALIDATE_BITS_CHECKED);
1587 usig->common |=
1588 LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_VALIDATE,
1589 IEEE80211_RADIOTAP_EHT_USIG_COMMON_VALIDATE_BITS_OK);
1590 }
1591
1592 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_SPATIAL_REUSE);
1593 eht->data[0] |= LE32_DEC_ENC(data0,
1594 IWL_RX_PHY_DATA0_ETH_SPATIAL_REUSE_MASK,
1595 IEEE80211_RADIOTAP_EHT_DATA0_SPATIAL_REUSE);
1596
1597 /* All RU allocating size/index is in TB format */
1598 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_RU_ALLOC_TB_FMT);
1599 eht->data[8] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PS160,
1600 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_PS_160);
1601 eht->data[8] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_RU_ALLOC_B0,
1602 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B0);
1603 eht->data[8] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_RU_ALLOC_B1_B7,
1604 IEEE80211_RADIOTAP_EHT_DATA8_RU_ALLOC_TB_FMT_B7_B1);
1605
1606 iwl_mvm_decode_eht_ru(mvm, rx_status, eht);
1607
1608 /* We only get here in case of IWL_RX_MPDU_PHY_TSF_OVERLOAD is set
1609 * which is on only in case of monitor mode so no need to check monitor
1610 * mode
1611 */
1612 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PRIMARY_80);
1613 eht->data[1] |=
1614 le32_encode_bits(mvm->monitor_p80,
1615 IEEE80211_RADIOTAP_EHT_DATA1_PRIMARY_80);
1616
1617 usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP_KNOWN);
1618 if (phy_data->with_data)
1619 usig->common |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_TXOP_DUR_MASK,
1620 IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP);
1621 else
1622 usig->common |= LE32_DEC_ENC(usig_a1, IWL_RX_USIG_A1_TXOP_DURATION,
1623 IEEE80211_RADIOTAP_EHT_USIG_COMMON_TXOP);
1624
1625 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_LDPC_EXTRA_SYM_OM);
1626 eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_LDPC_EXT_SYM,
1627 IEEE80211_RADIOTAP_EHT_DATA0_LDPC_EXTRA_SYM_OM);
1628
1629 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PRE_PADD_FACOR_OM);
1630 eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PRE_FEC_PAD_MASK,
1631 IEEE80211_RADIOTAP_EHT_DATA0_PRE_PADD_FACOR_OM);
1632
1633 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_PE_DISAMBIGUITY_OM);
1634 eht->data[0] |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PE_DISAMBIG,
1635 IEEE80211_RADIOTAP_EHT_DATA0_PE_DISAMBIGUITY_OM);
1636
1637 /* TODO: what about IWL_RX_PHY_DATA0_EHT_BW320_SLOT */
1638
1639 if (!le32_get_bits(data0, IWL_RX_PHY_DATA0_EHT_SIGA_CRC_OK))
1640 usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BAD_USIG_CRC);
1641
1642 usig->common |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_PHY_VER_KNOWN);
1643 usig->common |= LE32_DEC_ENC(data0, IWL_RX_PHY_DATA0_EHT_PHY_VER,
1644 IEEE80211_RADIOTAP_EHT_USIG_COMMON_PHY_VER);
1645
1646 /*
1647 * TODO: what about TB - IWL_RX_PHY_DATA1_EHT_TB_PILOT_TYPE,
1648 * IWL_RX_PHY_DATA1_EHT_TB_LOW_SS
1649 */
1650
1651 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_EHT_LTF);
1652 eht->data[0] |= LE32_DEC_ENC(data1, IWL_RX_PHY_DATA1_EHT_SIG_LTF_NUM,
1653 IEEE80211_RADIOTAP_EHT_DATA0_EHT_LTF);
1654
1655 if (info_type == IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT ||
1656 info_type == IWL_RX_PHY_INFO_TYPE_EHT_TB)
1657 iwl_mvm_decode_eht_ext_tb(mvm, phy_data, rx_status, eht, usig);
1658
1659 if (info_type == IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT ||
1660 info_type == IWL_RX_PHY_INFO_TYPE_EHT_MU)
1661 iwl_mvm_decode_eht_ext_mu(mvm, phy_data, rx_status, eht, usig);
1662 }
1663
iwl_mvm_rx_eht(struct iwl_mvm * mvm,struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data,int queue)1664 static void iwl_mvm_rx_eht(struct iwl_mvm *mvm, struct sk_buff *skb,
1665 struct iwl_mvm_rx_phy_data *phy_data,
1666 int queue)
1667 {
1668 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1669
1670 struct ieee80211_radiotap_eht *eht;
1671 struct ieee80211_radiotap_eht_usig *usig;
1672 size_t eht_len = sizeof(*eht);
1673
1674 u32 rate_n_flags = phy_data->rate_n_flags;
1675 u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1676 /* EHT and HE have the same valus for LTF */
1677 u8 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN;
1678 u16 phy_info = phy_data->phy_info;
1679 u32 bw;
1680
1681 /* u32 for 1 user_info */
1682 if (phy_data->with_data)
1683 eht_len += sizeof(u32);
1684
1685 eht = iwl_mvm_radiotap_put_tlv(skb, IEEE80211_RADIOTAP_EHT, eht_len);
1686
1687 usig = iwl_mvm_radiotap_put_tlv(skb, IEEE80211_RADIOTAP_EHT_USIG,
1688 sizeof(*usig));
1689 rx_status->flag |= RX_FLAG_RADIOTAP_TLV_AT_END;
1690 usig->common |=
1691 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BW_KNOWN);
1692
1693 /* specific handling for 320MHz */
1694 bw = FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK, rate_n_flags);
1695 if (bw == RATE_MCS_CHAN_WIDTH_320_VAL)
1696 bw += FIELD_GET(IWL_RX_PHY_DATA0_EHT_BW320_SLOT,
1697 le32_to_cpu(phy_data->d0));
1698
1699 usig->common |= cpu_to_le32
1700 (FIELD_PREP(IEEE80211_RADIOTAP_EHT_USIG_COMMON_BW, bw));
1701
1702 /* report the AMPDU-EOF bit on single frames */
1703 if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1704 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
1705 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1706 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
1707 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1708 }
1709
1710 /* update aggregation data for monitor sake on default queue */
1711 if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) &&
1712 (phy_info & IWL_RX_MPDU_PHY_AMPDU) && phy_data->first_subframe) {
1713 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1714 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
1715 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1716 }
1717
1718 if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1719 iwl_mvm_decode_eht_phy_data(mvm, phy_data, rx_status, eht, usig);
1720
1721 #define CHECK_TYPE(F) \
1722 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F != \
1723 (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS))
1724
1725 CHECK_TYPE(SU);
1726 CHECK_TYPE(EXT_SU);
1727 CHECK_TYPE(MU);
1728 CHECK_TYPE(TRIG);
1729
1730 switch (FIELD_GET(RATE_MCS_HE_GI_LTF_MSK, rate_n_flags)) {
1731 case 0:
1732 if (he_type == RATE_MCS_HE_TYPE_TRIG) {
1733 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_1_6;
1734 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
1735 } else {
1736 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_0_8;
1737 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1738 }
1739 break;
1740 case 1:
1741 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_1_6;
1742 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1743 break;
1744 case 2:
1745 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1746 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1747 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_3_2;
1748 else
1749 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_0_8;
1750 break;
1751 case 3:
1752 if (he_type != RATE_MCS_HE_TYPE_TRIG) {
1753 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1754 rx_status->eht.gi = NL80211_RATE_INFO_EHT_GI_3_2;
1755 }
1756 break;
1757 default:
1758 /* nothing here */
1759 break;
1760 }
1761
1762 if (ltf != IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN) {
1763 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_GI);
1764 eht->data[0] |= cpu_to_le32
1765 (FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_LTF,
1766 ltf) |
1767 FIELD_PREP(IEEE80211_RADIOTAP_EHT_DATA0_GI,
1768 rx_status->eht.gi));
1769 }
1770
1771
1772 if (!phy_data->with_data) {
1773 eht->known |= cpu_to_le32(IEEE80211_RADIOTAP_EHT_KNOWN_NSS_S |
1774 IEEE80211_RADIOTAP_EHT_KNOWN_BEAMFORMED_S);
1775 eht->data[7] |=
1776 le32_encode_bits(le32_get_bits(phy_data->rx_vec[2],
1777 RX_NO_DATA_RX_VEC2_EHT_NSTS_MSK),
1778 IEEE80211_RADIOTAP_EHT_DATA7_NSS_S);
1779 if (rate_n_flags & RATE_MCS_BF_MSK)
1780 eht->data[7] |=
1781 cpu_to_le32(IEEE80211_RADIOTAP_EHT_DATA7_BEAMFORMED_S);
1782 } else {
1783 eht->user_info[0] |=
1784 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_MCS_KNOWN |
1785 IEEE80211_RADIOTAP_EHT_USER_INFO_CODING_KNOWN |
1786 IEEE80211_RADIOTAP_EHT_USER_INFO_NSS_KNOWN_O |
1787 IEEE80211_RADIOTAP_EHT_USER_INFO_BEAMFORMING_KNOWN_O |
1788 IEEE80211_RADIOTAP_EHT_USER_INFO_DATA_FOR_USER);
1789
1790 if (rate_n_flags & RATE_MCS_BF_MSK)
1791 eht->user_info[0] |=
1792 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_BEAMFORMING_O);
1793
1794 if (rate_n_flags & RATE_MCS_LDPC_MSK)
1795 eht->user_info[0] |=
1796 cpu_to_le32(IEEE80211_RADIOTAP_EHT_USER_INFO_CODING);
1797
1798 eht->user_info[0] |= cpu_to_le32
1799 (FIELD_PREP(IEEE80211_RADIOTAP_EHT_USER_INFO_MCS,
1800 FIELD_GET(RATE_VHT_MCS_RATE_CODE_MSK,
1801 rate_n_flags)) |
1802 FIELD_PREP(IEEE80211_RADIOTAP_EHT_USER_INFO_NSS_O,
1803 FIELD_GET(RATE_MCS_NSS_MSK, rate_n_flags)));
1804 }
1805 }
1806
iwl_mvm_rx_he(struct iwl_mvm * mvm,struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data,int queue)1807 static void iwl_mvm_rx_he(struct iwl_mvm *mvm, struct sk_buff *skb,
1808 struct iwl_mvm_rx_phy_data *phy_data,
1809 int queue)
1810 {
1811 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1812 struct ieee80211_radiotap_he *he = NULL;
1813 struct ieee80211_radiotap_he_mu *he_mu = NULL;
1814 u32 rate_n_flags = phy_data->rate_n_flags;
1815 u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1816 u8 ltf;
1817 static const struct ieee80211_radiotap_he known = {
1818 .data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN |
1819 IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN |
1820 IEEE80211_RADIOTAP_HE_DATA1_STBC_KNOWN |
1821 IEEE80211_RADIOTAP_HE_DATA1_CODING_KNOWN),
1822 .data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN |
1823 IEEE80211_RADIOTAP_HE_DATA2_TXBF_KNOWN),
1824 };
1825 static const struct ieee80211_radiotap_he_mu mu_known = {
1826 .flags1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS_KNOWN |
1827 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM_KNOWN |
1828 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN |
1829 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_COMP_KNOWN),
1830 .flags2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW_KNOWN |
1831 IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN),
1832 };
1833 u16 phy_info = phy_data->phy_info;
1834
1835 he = skb_put_data(skb, &known, sizeof(known));
1836 rx_status->flag |= RX_FLAG_RADIOTAP_HE;
1837
1838 if (phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU ||
1839 phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU_EXT) {
1840 he_mu = skb_put_data(skb, &mu_known, sizeof(mu_known));
1841 rx_status->flag |= RX_FLAG_RADIOTAP_HE_MU;
1842 }
1843
1844 /* report the AMPDU-EOF bit on single frames */
1845 if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1846 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
1847 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1848 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF))
1849 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1850 }
1851
1852 if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1853 iwl_mvm_decode_he_phy_data(mvm, phy_data, he, he_mu, rx_status,
1854 queue);
1855
1856 /* update aggregation data for monitor sake on default queue */
1857 if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) &&
1858 (phy_info & IWL_RX_MPDU_PHY_AMPDU) && phy_data->first_subframe) {
1859 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1860 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_EHT_DELIM_EOF))
1861 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1862 }
1863
1864 if (he_type == RATE_MCS_HE_TYPE_EXT_SU &&
1865 rate_n_flags & RATE_MCS_HE_106T_MSK) {
1866 rx_status->bw = RATE_INFO_BW_HE_RU;
1867 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
1868 }
1869
1870 /* actually data is filled in mac80211 */
1871 if (he_type == RATE_MCS_HE_TYPE_SU ||
1872 he_type == RATE_MCS_HE_TYPE_EXT_SU)
1873 he->data1 |=
1874 cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
1875
1876 #define CHECK_TYPE(F) \
1877 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F != \
1878 (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS))
1879
1880 CHECK_TYPE(SU);
1881 CHECK_TYPE(EXT_SU);
1882 CHECK_TYPE(MU);
1883 CHECK_TYPE(TRIG);
1884
1885 he->data1 |= cpu_to_le16(he_type >> RATE_MCS_HE_TYPE_POS);
1886
1887 if (rate_n_flags & RATE_MCS_BF_MSK)
1888 he->data5 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA5_TXBF);
1889
1890 switch ((rate_n_flags & RATE_MCS_HE_GI_LTF_MSK) >>
1891 RATE_MCS_HE_GI_LTF_POS) {
1892 case 0:
1893 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1894 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1895 else
1896 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1897 if (he_type == RATE_MCS_HE_TYPE_MU)
1898 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1899 else
1900 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
1901 break;
1902 case 1:
1903 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1904 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1905 else
1906 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1907 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1908 break;
1909 case 2:
1910 if (he_type == RATE_MCS_HE_TYPE_TRIG) {
1911 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
1912 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1913 } else {
1914 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1915 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1916 }
1917 break;
1918 case 3:
1919 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
1920 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1921 break;
1922 case 4:
1923 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1924 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1925 break;
1926 default:
1927 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_UNKNOWN;
1928 }
1929
1930 he->data5 |= le16_encode_bits(ltf,
1931 IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE);
1932 }
1933
iwl_mvm_decode_lsig(struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data)1934 static void iwl_mvm_decode_lsig(struct sk_buff *skb,
1935 struct iwl_mvm_rx_phy_data *phy_data)
1936 {
1937 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1938 struct ieee80211_radiotap_lsig *lsig;
1939
1940 switch (phy_data->info_type) {
1941 case IWL_RX_PHY_INFO_TYPE_HT:
1942 case IWL_RX_PHY_INFO_TYPE_VHT_SU:
1943 case IWL_RX_PHY_INFO_TYPE_VHT_MU:
1944 case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1945 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1946 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1947 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1948 case IWL_RX_PHY_INFO_TYPE_HE_TB:
1949 case IWL_RX_PHY_INFO_TYPE_EHT_MU:
1950 case IWL_RX_PHY_INFO_TYPE_EHT_TB:
1951 case IWL_RX_PHY_INFO_TYPE_EHT_MU_EXT:
1952 case IWL_RX_PHY_INFO_TYPE_EHT_TB_EXT:
1953 lsig = skb_put(skb, sizeof(*lsig));
1954 lsig->data1 = cpu_to_le16(IEEE80211_RADIOTAP_LSIG_DATA1_LENGTH_KNOWN);
1955 lsig->data2 = le16_encode_bits(le32_get_bits(phy_data->d1,
1956 IWL_RX_PHY_DATA1_LSIG_LEN_MASK),
1957 IEEE80211_RADIOTAP_LSIG_DATA2_LENGTH);
1958 rx_status->flag |= RX_FLAG_RADIOTAP_LSIG;
1959 break;
1960 default:
1961 break;
1962 }
1963 }
1964
1965 struct iwl_rx_sta_csa {
1966 bool all_sta_unblocked;
1967 struct ieee80211_vif *vif;
1968 };
1969
iwl_mvm_rx_get_sta_block_tx(void * data,struct ieee80211_sta * sta)1970 static void iwl_mvm_rx_get_sta_block_tx(void *data, struct ieee80211_sta *sta)
1971 {
1972 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1973 struct iwl_rx_sta_csa *rx_sta_csa = data;
1974
1975 if (mvmsta->vif != rx_sta_csa->vif)
1976 return;
1977
1978 if (mvmsta->disable_tx)
1979 rx_sta_csa->all_sta_unblocked = false;
1980 }
1981
1982 /*
1983 * Note: requires also rx_status->band to be prefilled, as well
1984 * as phy_data (apart from phy_data->info_type)
1985 * Note: desc/hdr may be NULL
1986 */
iwl_mvm_rx_fill_status(struct iwl_mvm * mvm,struct iwl_rx_mpdu_desc * desc,struct ieee80211_hdr * hdr,struct sk_buff * skb,struct iwl_mvm_rx_phy_data * phy_data,int queue)1987 static void iwl_mvm_rx_fill_status(struct iwl_mvm *mvm,
1988 struct iwl_rx_mpdu_desc *desc,
1989 struct ieee80211_hdr *hdr,
1990 struct sk_buff *skb,
1991 struct iwl_mvm_rx_phy_data *phy_data,
1992 int queue)
1993 {
1994 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1995 u32 rate_n_flags = phy_data->rate_n_flags;
1996 u8 stbc = u32_get_bits(rate_n_flags, RATE_MCS_STBC_MSK);
1997 u32 format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
1998 bool is_sgi;
1999
2000 phy_data->info_type = IWL_RX_PHY_INFO_TYPE_NONE;
2001
2002 if (phy_data->phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
2003 phy_data->info_type =
2004 le32_get_bits(phy_data->d1,
2005 IWL_RX_PHY_DATA1_INFO_TYPE_MASK);
2006
2007 /* This may be overridden by iwl_mvm_rx_he() to HE_RU */
2008 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
2009 case RATE_MCS_CHAN_WIDTH_20:
2010 break;
2011 case RATE_MCS_CHAN_WIDTH_40:
2012 rx_status->bw = RATE_INFO_BW_40;
2013 break;
2014 case RATE_MCS_CHAN_WIDTH_80:
2015 rx_status->bw = RATE_INFO_BW_80;
2016 break;
2017 case RATE_MCS_CHAN_WIDTH_160:
2018 rx_status->bw = RATE_INFO_BW_160;
2019 break;
2020 case RATE_MCS_CHAN_WIDTH_320:
2021 rx_status->bw = RATE_INFO_BW_320;
2022 break;
2023 }
2024
2025 /* must be before L-SIG data */
2026 if (format == RATE_MCS_MOD_TYPE_HE)
2027 iwl_mvm_rx_he(mvm, skb, phy_data, queue);
2028
2029 iwl_mvm_decode_lsig(skb, phy_data);
2030
2031 rx_status->device_timestamp = phy_data->gp2_on_air_rise;
2032
2033 if (mvm->rx_ts_ptp && mvm->monitor_on) {
2034 u64 adj_time =
2035 iwl_mvm_ptp_get_adj_time(mvm, phy_data->gp2_on_air_rise * NSEC_PER_USEC);
2036
2037 rx_status->mactime = div64_u64(adj_time, NSEC_PER_USEC);
2038 rx_status->flag |= RX_FLAG_MACTIME_IS_RTAP_TS64;
2039 rx_status->flag &= ~RX_FLAG_MACTIME;
2040 }
2041
2042 rx_status->freq = ieee80211_channel_to_frequency(phy_data->channel,
2043 rx_status->band);
2044 iwl_mvm_get_signal_strength(mvm, desc, hdr, rx_status, rate_n_flags,
2045 phy_data->energy_a, phy_data->energy_b);
2046
2047 /* using TLV format and must be after all fixed len fields */
2048 if (format == RATE_MCS_MOD_TYPE_EHT)
2049 iwl_mvm_rx_eht(mvm, skb, phy_data, queue);
2050
2051 if (unlikely(mvm->monitor_on))
2052 iwl_mvm_add_rtap_sniffer_config(mvm, skb);
2053
2054 is_sgi = format == RATE_MCS_MOD_TYPE_HE ?
2055 iwl_he_is_sgi(rate_n_flags) :
2056 rate_n_flags & RATE_MCS_SGI_MSK;
2057
2058 if (!(format == RATE_MCS_MOD_TYPE_CCK) && is_sgi)
2059 rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
2060
2061 if (rate_n_flags & RATE_MCS_LDPC_MSK)
2062 rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
2063
2064 switch (format) {
2065 case RATE_MCS_MOD_TYPE_VHT:
2066 rx_status->encoding = RX_ENC_VHT;
2067 break;
2068 case RATE_MCS_MOD_TYPE_HE:
2069 rx_status->encoding = RX_ENC_HE;
2070 rx_status->he_dcm =
2071 !!(rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK);
2072 break;
2073 case RATE_MCS_MOD_TYPE_EHT:
2074 rx_status->encoding = RX_ENC_EHT;
2075 break;
2076 }
2077
2078 switch (format) {
2079 case RATE_MCS_MOD_TYPE_HT:
2080 rx_status->encoding = RX_ENC_HT;
2081 rx_status->rate_idx = RATE_HT_MCS_INDEX(rate_n_flags);
2082 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
2083 break;
2084 case RATE_MCS_MOD_TYPE_VHT:
2085 case RATE_MCS_MOD_TYPE_HE:
2086 case RATE_MCS_MOD_TYPE_EHT:
2087 rx_status->nss =
2088 u32_get_bits(rate_n_flags, RATE_MCS_NSS_MSK) + 1;
2089 rx_status->rate_idx = rate_n_flags & RATE_MCS_CODE_MSK;
2090 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
2091 break;
2092 default: {
2093 int rate = iwl_mvm_legacy_hw_idx_to_mac80211_idx(rate_n_flags,
2094 rx_status->band);
2095
2096 rx_status->rate_idx = rate;
2097
2098 if ((rate < 0 || rate > 0xFF)) {
2099 rx_status->rate_idx = 0;
2100 if (net_ratelimit())
2101 IWL_ERR(mvm, "Invalid rate flags 0x%x, band %d,\n",
2102 rate_n_flags, rx_status->band);
2103 }
2104
2105 break;
2106 }
2107 }
2108 }
2109
iwl_mvm_rx_mpdu_mq(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2110 void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
2111 struct iwl_rx_cmd_buffer *rxb, int queue)
2112 {
2113 struct ieee80211_rx_status *rx_status;
2114 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2115 struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
2116 struct ieee80211_hdr *hdr;
2117 u32 len;
2118 u32 pkt_len = iwl_rx_packet_payload_len(pkt);
2119 struct ieee80211_sta *sta = NULL;
2120 struct sk_buff *skb;
2121 u8 crypt_len = 0;
2122 u8 sta_id = le32_get_bits(desc->status, IWL_RX_MPDU_STATUS_STA_ID);
2123 size_t desc_size;
2124 struct iwl_mvm_rx_phy_data phy_data = {};
2125 u32 format;
2126
2127 if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
2128 return;
2129
2130 if (mvm->trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
2131 desc_size = sizeof(*desc);
2132 else
2133 desc_size = IWL_RX_DESC_SIZE_V1;
2134
2135 if (unlikely(pkt_len < desc_size)) {
2136 IWL_DEBUG_DROP(mvm, "Bad REPLY_RX_MPDU_CMD size\n");
2137 return;
2138 }
2139
2140 if (mvm->trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
2141 phy_data.rate_n_flags =
2142 iwl_mvm_v3_rate_from_fw(desc->v3.rate_n_flags,
2143 mvm->fw_rates_ver);
2144 phy_data.channel = desc->v3.channel;
2145 phy_data.gp2_on_air_rise = le32_to_cpu(desc->v3.gp2_on_air_rise);
2146 phy_data.energy_a = desc->v3.energy_a;
2147 phy_data.energy_b = desc->v3.energy_b;
2148
2149 phy_data.d0 = desc->v3.phy_data0;
2150 phy_data.d1 = desc->v3.phy_data1;
2151 phy_data.d2 = desc->v3.phy_data2;
2152 phy_data.d3 = desc->v3.phy_data3;
2153 phy_data.eht_d4 = desc->phy_eht_data4;
2154 phy_data.d5 = desc->v3.phy_data5;
2155 } else {
2156 phy_data.rate_n_flags =
2157 iwl_mvm_v3_rate_from_fw(desc->v1.rate_n_flags,
2158 mvm->fw_rates_ver);
2159 phy_data.channel = desc->v1.channel;
2160 phy_data.gp2_on_air_rise = le32_to_cpu(desc->v1.gp2_on_air_rise);
2161 phy_data.energy_a = desc->v1.energy_a;
2162 phy_data.energy_b = desc->v1.energy_b;
2163
2164 phy_data.d0 = desc->v1.phy_data0;
2165 phy_data.d1 = desc->v1.phy_data1;
2166 phy_data.d2 = desc->v1.phy_data2;
2167 phy_data.d3 = desc->v1.phy_data3;
2168 }
2169
2170 format = phy_data.rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
2171
2172 len = le16_to_cpu(desc->mpdu_len);
2173
2174 if (unlikely(len + desc_size > pkt_len)) {
2175 IWL_DEBUG_DROP(mvm, "FW lied about packet len\n");
2176 return;
2177 }
2178
2179 phy_data.with_data = true;
2180 phy_data.phy_info = le16_to_cpu(desc->phy_info);
2181 phy_data.d4 = desc->phy_data4;
2182
2183 hdr = (void *)(pkt->data + desc_size);
2184 /* Dont use dev_alloc_skb(), we'll have enough headroom once
2185 * ieee80211_hdr pulled.
2186 */
2187 skb = alloc_skb(128, GFP_ATOMIC);
2188 if (!skb) {
2189 IWL_ERR(mvm, "alloc_skb failed\n");
2190 return;
2191 }
2192
2193 if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
2194 /*
2195 * If the device inserted padding it means that (it thought)
2196 * the 802.11 header wasn't a multiple of 4 bytes long. In
2197 * this case, reserve two bytes at the start of the SKB to
2198 * align the payload properly in case we end up copying it.
2199 */
2200 skb_reserve(skb, 2);
2201 }
2202
2203 rx_status = IEEE80211_SKB_RXCB(skb);
2204
2205 /*
2206 * Keep packets with CRC errors (and with overrun) for monitor mode
2207 * (otherwise the firmware discards them) but mark them as bad.
2208 */
2209 if (!(desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_CRC_OK)) ||
2210 !(desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_OVERRUN_OK))) {
2211 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n",
2212 le32_to_cpu(desc->status));
2213 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
2214 }
2215
2216 /* set the preamble flag if appropriate */
2217 if (format == RATE_MCS_MOD_TYPE_CCK &&
2218 phy_data.phy_info & IWL_RX_MPDU_PHY_SHORT_PREAMBLE)
2219 rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
2220
2221 if (likely(!(phy_data.phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD))) {
2222 u64 tsf_on_air_rise;
2223
2224 if (mvm->trans->mac_cfg->device_family >=
2225 IWL_DEVICE_FAMILY_AX210)
2226 tsf_on_air_rise = le64_to_cpu(desc->v3.tsf_on_air_rise);
2227 else
2228 tsf_on_air_rise = le64_to_cpu(desc->v1.tsf_on_air_rise);
2229
2230 rx_status->mactime = tsf_on_air_rise;
2231 /* TSF as indicated by the firmware is at INA time */
2232 rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;
2233 }
2234
2235 if (iwl_mvm_is_band_in_rx_supported(mvm)) {
2236 u8 band = u8_get_bits(desc->mac_phy_band,
2237 IWL_RX_MPDU_MAC_PHY_BAND_BAND_MASK);
2238
2239 rx_status->band = iwl_mvm_nl80211_band_from_phy(band);
2240 } else {
2241 rx_status->band = phy_data.channel > 14 ? NL80211_BAND_5GHZ :
2242 NL80211_BAND_2GHZ;
2243 }
2244
2245 /* update aggregation data for monitor sake on default queue */
2246 if (!queue && (phy_data.phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
2247 bool toggle_bit;
2248
2249 toggle_bit = phy_data.phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE;
2250 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
2251 /*
2252 * Toggle is switched whenever new aggregation starts. Make
2253 * sure ampdu_reference is never 0 so we can later use it to
2254 * see if the frame was really part of an A-MPDU or not.
2255 */
2256 if (toggle_bit != mvm->ampdu_toggle) {
2257 mvm->ampdu_ref++;
2258 if (mvm->ampdu_ref == 0)
2259 mvm->ampdu_ref++;
2260 mvm->ampdu_toggle = toggle_bit;
2261 phy_data.first_subframe = true;
2262 }
2263 rx_status->ampdu_reference = mvm->ampdu_ref;
2264 }
2265
2266 rcu_read_lock();
2267
2268 if (desc->status & cpu_to_le32(IWL_RX_MPDU_STATUS_SRC_STA_FOUND)) {
2269 if (!WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations)) {
2270 struct ieee80211_link_sta *link_sta;
2271
2272 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
2273 if (IS_ERR(sta))
2274 sta = NULL;
2275 link_sta = rcu_dereference(mvm->fw_id_to_link_sta[sta_id]);
2276
2277 if (sta && sta->valid_links && link_sta) {
2278 rx_status->link_valid = 1;
2279 rx_status->link_id = link_sta->link_id;
2280 }
2281 }
2282 } else if (!is_multicast_ether_addr(hdr->addr2)) {
2283 /*
2284 * This is fine since we prevent two stations with the same
2285 * address from being added.
2286 */
2287 sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
2288 }
2289
2290 if (iwl_mvm_rx_crypto(mvm, sta, hdr, rx_status, phy_data.phy_info, desc,
2291 le32_to_cpu(pkt->len_n_flags), queue,
2292 &crypt_len)) {
2293 kfree_skb(skb);
2294 goto out;
2295 }
2296
2297 iwl_mvm_rx_fill_status(mvm, desc, hdr, skb, &phy_data, queue);
2298
2299 if (sta) {
2300 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2301 struct ieee80211_vif *tx_blocked_vif =
2302 rcu_dereference(mvm->csa_tx_blocked_vif);
2303 u8 baid = (u8)((le32_to_cpu(desc->reorder_data) &
2304 IWL_RX_MPDU_REORDER_BAID_MASK) >>
2305 IWL_RX_MPDU_REORDER_BAID_SHIFT);
2306 struct iwl_fw_dbg_trigger_tlv *trig;
2307 struct ieee80211_vif *vif = mvmsta->vif;
2308
2309 if (!mvm->tcm.paused && len >= sizeof(*hdr) &&
2310 !is_multicast_ether_addr(hdr->addr1) &&
2311 ieee80211_is_data(hdr->frame_control) &&
2312 time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
2313 schedule_delayed_work(&mvm->tcm.work, 0);
2314
2315 /*
2316 * We have tx blocked stations (with CS bit). If we heard
2317 * frames from a blocked station on a new channel we can
2318 * TX to it again.
2319 */
2320 if (unlikely(tx_blocked_vif) && tx_blocked_vif == vif) {
2321 struct iwl_mvm_vif *mvmvif =
2322 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
2323 struct iwl_rx_sta_csa rx_sta_csa = {
2324 .all_sta_unblocked = true,
2325 .vif = tx_blocked_vif,
2326 };
2327
2328 if (mvmvif->csa_target_freq == rx_status->freq)
2329 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta,
2330 false);
2331 ieee80211_iterate_stations_atomic(mvm->hw,
2332 iwl_mvm_rx_get_sta_block_tx,
2333 &rx_sta_csa);
2334
2335 if (rx_sta_csa.all_sta_unblocked) {
2336 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2337 /* Unblock BCAST / MCAST station */
2338 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
2339 cancel_delayed_work(&mvm->cs_tx_unblock_dwork);
2340 }
2341 }
2342
2343 rs_update_last_rssi(mvm, mvmsta, rx_status);
2344
2345 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt,
2346 ieee80211_vif_to_wdev(vif),
2347 FW_DBG_TRIGGER_RSSI);
2348
2349 if (trig && ieee80211_is_beacon(hdr->frame_control)) {
2350 struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
2351 s32 rssi;
2352
2353 rssi_trig = (void *)trig->data;
2354 rssi = le32_to_cpu(rssi_trig->rssi);
2355
2356 if (rx_status->signal < rssi)
2357 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
2358 #if defined(__linux__)
2359 NULL);
2360 #elif defined(__FreeBSD__)
2361 "");
2362 #endif
2363 }
2364
2365 if (ieee80211_is_data(hdr->frame_control))
2366 iwl_mvm_rx_csum(mvm, sta, skb, pkt);
2367
2368 if (iwl_mvm_is_dup(sta, queue, rx_status, hdr, desc)) {
2369 IWL_DEBUG_DROP(mvm, "Dropping duplicate packet 0x%x\n",
2370 le16_to_cpu(hdr->seq_ctrl));
2371 kfree_skb(skb);
2372 goto out;
2373 }
2374
2375 /*
2376 * Our hardware de-aggregates AMSDUs but copies the mac header
2377 * as it to the de-aggregated MPDUs. We need to turn off the
2378 * AMSDU bit in the QoS control ourselves.
2379 * In addition, HW reverses addr3 and addr4 - reverse it back.
2380 */
2381 if ((desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
2382 !WARN_ON(!ieee80211_is_data_qos(hdr->frame_control))) {
2383 u8 *qc = ieee80211_get_qos_ctl(hdr);
2384
2385 *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
2386
2387 if (mvm->trans->mac_cfg->device_family ==
2388 IWL_DEVICE_FAMILY_9000) {
2389 iwl_mvm_flip_address(hdr->addr3);
2390
2391 if (ieee80211_has_a4(hdr->frame_control))
2392 iwl_mvm_flip_address(hdr->addr4);
2393 }
2394 }
2395 if (baid != IWL_RX_REORDER_DATA_INVALID_BAID) {
2396 u32 reorder_data = le32_to_cpu(desc->reorder_data);
2397
2398 iwl_mvm_agg_rx_received(mvm, reorder_data, baid);
2399 }
2400
2401 if (ieee80211_is_data(hdr->frame_control)) {
2402 u8 sub_frame_idx = desc->amsdu_info &
2403 IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
2404
2405 /* 0 means not an A-MSDU, and 1 means a new A-MSDU */
2406 if (!sub_frame_idx || sub_frame_idx == 1)
2407 iwl_mvm_count_mpdu(mvmsta, sta_id, 1, false,
2408 queue);
2409 }
2410 }
2411
2412 /* management stuff on default queue */
2413 if (!queue) {
2414 if (unlikely((ieee80211_is_beacon(hdr->frame_control) ||
2415 ieee80211_is_probe_resp(hdr->frame_control)) &&
2416 mvm->sched_scan_pass_all ==
2417 SCHED_SCAN_PASS_ALL_ENABLED))
2418 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND;
2419
2420 if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
2421 ieee80211_is_probe_resp(hdr->frame_control)))
2422 rx_status->boottime_ns = ktime_get_boottime_ns();
2423 }
2424
2425 if (iwl_mvm_create_skb(mvm, skb, hdr, len, crypt_len, rxb)) {
2426 kfree_skb(skb);
2427 goto out;
2428 }
2429
2430 if (!iwl_mvm_reorder(mvm, napi, queue, sta, skb, desc) &&
2431 likely(!iwl_mvm_time_sync_frame(mvm, skb, hdr->addr2)) &&
2432 likely(!iwl_mvm_mei_filter_scan(mvm, skb))) {
2433 if (mvm->trans->mac_cfg->device_family == IWL_DEVICE_FAMILY_9000 &&
2434 (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
2435 !(desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME))
2436 rx_status->flag |= RX_FLAG_AMSDU_MORE;
2437
2438 iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue, sta);
2439 }
2440 out:
2441 rcu_read_unlock();
2442 }
2443
iwl_mvm_rx_monitor_no_data(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2444 void iwl_mvm_rx_monitor_no_data(struct iwl_mvm *mvm, struct napi_struct *napi,
2445 struct iwl_rx_cmd_buffer *rxb, int queue)
2446 {
2447 struct ieee80211_rx_status *rx_status;
2448 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2449 struct iwl_rx_no_data_ver_3 *desc = (void *)pkt->data;
2450 u32 rssi;
2451 struct ieee80211_sta *sta = NULL;
2452 struct sk_buff *skb;
2453 struct iwl_mvm_rx_phy_data phy_data;
2454 u32 format;
2455
2456 if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
2457 return;
2458
2459 if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(struct iwl_rx_no_data)))
2460 return;
2461
2462 rssi = le32_to_cpu(desc->rssi);
2463 phy_data.d0 = desc->phy_info[0];
2464 phy_data.d1 = desc->phy_info[1];
2465 phy_data.phy_info = IWL_RX_MPDU_PHY_TSF_OVERLOAD;
2466 phy_data.gp2_on_air_rise = le32_to_cpu(desc->on_air_rise_time);
2467 phy_data.energy_a = u32_get_bits(rssi, RX_NO_DATA_CHAIN_A_MSK);
2468 phy_data.energy_b = u32_get_bits(rssi, RX_NO_DATA_CHAIN_B_MSK);
2469 phy_data.channel = u32_get_bits(rssi, RX_NO_DATA_CHANNEL_MSK);
2470 phy_data.with_data = false;
2471 phy_data.rx_vec[0] = desc->rx_vec[0];
2472 phy_data.rx_vec[1] = desc->rx_vec[1];
2473
2474 phy_data.rate_n_flags = iwl_mvm_v3_rate_from_fw(desc->rate,
2475 mvm->fw_rates_ver);
2476
2477 format = phy_data.rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
2478
2479 if (iwl_fw_lookup_notif_ver(mvm->fw, DATA_PATH_GROUP,
2480 RX_NO_DATA_NOTIF, 0) >= 3) {
2481 if (unlikely(iwl_rx_packet_payload_len(pkt) <
2482 sizeof(struct iwl_rx_no_data_ver_3)))
2483 /* invalid len for ver 3 */
2484 return;
2485 phy_data.rx_vec[2] = desc->rx_vec[2];
2486 phy_data.rx_vec[3] = desc->rx_vec[3];
2487 } else {
2488 if (format == RATE_MCS_MOD_TYPE_EHT)
2489 /* no support for EHT before version 3 API */
2490 return;
2491 }
2492
2493 /* Dont use dev_alloc_skb(), we'll have enough headroom once
2494 * ieee80211_hdr pulled.
2495 */
2496 skb = alloc_skb(128, GFP_ATOMIC);
2497 if (!skb) {
2498 IWL_ERR(mvm, "alloc_skb failed\n");
2499 return;
2500 }
2501
2502 rx_status = IEEE80211_SKB_RXCB(skb);
2503
2504 /* 0-length PSDU */
2505 rx_status->flag |= RX_FLAG_NO_PSDU;
2506
2507 /* mark as failed PLCP on any errors to skip checks in mac80211 */
2508 if (le32_get_bits(desc->info, RX_NO_DATA_INFO_ERR_MSK) !=
2509 RX_NO_DATA_INFO_ERR_NONE)
2510 rx_status->flag |= RX_FLAG_FAILED_PLCP_CRC;
2511
2512 switch (le32_get_bits(desc->info, RX_NO_DATA_INFO_TYPE_MSK)) {
2513 case RX_NO_DATA_INFO_TYPE_NDP:
2514 rx_status->zero_length_psdu_type =
2515 IEEE80211_RADIOTAP_ZERO_LEN_PSDU_SOUNDING;
2516 break;
2517 case RX_NO_DATA_INFO_TYPE_MU_UNMATCHED:
2518 case RX_NO_DATA_INFO_TYPE_TB_UNMATCHED:
2519 rx_status->zero_length_psdu_type =
2520 IEEE80211_RADIOTAP_ZERO_LEN_PSDU_NOT_CAPTURED;
2521 break;
2522 default:
2523 rx_status->zero_length_psdu_type =
2524 IEEE80211_RADIOTAP_ZERO_LEN_PSDU_VENDOR;
2525 break;
2526 }
2527
2528 rx_status->band = phy_data.channel > 14 ? NL80211_BAND_5GHZ :
2529 NL80211_BAND_2GHZ;
2530
2531 iwl_mvm_rx_fill_status(mvm, NULL, NULL, skb, &phy_data, queue);
2532
2533 /* no more radio tap info should be put after this point.
2534 *
2535 * We mark it as mac header, for upper layers to know where
2536 * all radio tap header ends.
2537 *
2538 * Since data doesn't move data while putting data on skb and that is
2539 * the only way we use, data + len is the next place that hdr would be put
2540 */
2541 skb_set_mac_header(skb, skb->len);
2542
2543 /*
2544 * Override the nss from the rx_vec since the rate_n_flags has
2545 * only 2 bits for the nss which gives a max of 4 ss but there
2546 * may be up to 8 spatial streams.
2547 */
2548 switch (format) {
2549 case RATE_MCS_MOD_TYPE_VHT:
2550 rx_status->nss =
2551 le32_get_bits(desc->rx_vec[0],
2552 RX_NO_DATA_RX_VEC0_VHT_NSTS_MSK) + 1;
2553 break;
2554 case RATE_MCS_MOD_TYPE_HE:
2555 rx_status->nss =
2556 le32_get_bits(desc->rx_vec[0],
2557 RX_NO_DATA_RX_VEC0_HE_NSTS_MSK) + 1;
2558 break;
2559 case RATE_MCS_MOD_TYPE_EHT:
2560 rx_status->nss =
2561 le32_get_bits(desc->rx_vec[2],
2562 RX_NO_DATA_RX_VEC2_EHT_NSTS_MSK) + 1;
2563 }
2564
2565 rcu_read_lock();
2566 ieee80211_rx_napi(mvm->hw, sta, skb, napi);
2567 rcu_read_unlock();
2568 }
2569
iwl_mvm_rx_frame_release(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2570 void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
2571 struct iwl_rx_cmd_buffer *rxb, int queue)
2572 {
2573 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2574 struct iwl_frame_release *release = (void *)pkt->data;
2575
2576 if (unlikely(iwl_rx_packet_payload_len(pkt) < sizeof(*release)))
2577 return;
2578
2579 iwl_mvm_release_frames_from_notif(mvm, napi, release->baid,
2580 le16_to_cpu(release->nssn),
2581 queue);
2582 }
2583
iwl_mvm_rx_bar_frame_release(struct iwl_mvm * mvm,struct napi_struct * napi,struct iwl_rx_cmd_buffer * rxb,int queue)2584 void iwl_mvm_rx_bar_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
2585 struct iwl_rx_cmd_buffer *rxb, int queue)
2586 {
2587 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2588 struct iwl_bar_frame_release *release = (void *)pkt->data;
2589 struct iwl_mvm_baid_data *baid_data;
2590 u32 pkt_len = iwl_rx_packet_payload_len(pkt);
2591 unsigned int baid, nssn, sta_id, tid;
2592
2593 if (IWL_FW_CHECK(mvm, pkt_len < sizeof(*release),
2594 "Unexpected frame release notif size %d (expected %zu)\n",
2595 pkt_len, sizeof(*release)))
2596 return;
2597
2598 baid = le32_get_bits(release->ba_info,
2599 IWL_BAR_FRAME_RELEASE_BAID_MASK);
2600 nssn = le32_get_bits(release->ba_info,
2601 IWL_BAR_FRAME_RELEASE_NSSN_MASK);
2602 sta_id = le32_get_bits(release->sta_tid,
2603 IWL_BAR_FRAME_RELEASE_STA_MASK);
2604 tid = le32_get_bits(release->sta_tid,
2605 IWL_BAR_FRAME_RELEASE_TID_MASK);
2606
2607 if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID ||
2608 baid >= ARRAY_SIZE(mvm->baid_map)))
2609 return;
2610
2611 rcu_read_lock();
2612 baid_data = rcu_dereference(mvm->baid_map[baid]);
2613 if (!baid_data) {
2614 IWL_DEBUG_RX(mvm,
2615 "Got valid BAID %d but not allocated, invalid BAR release!\n",
2616 baid);
2617 goto out;
2618 }
2619
2620 if (WARN(tid != baid_data->tid || sta_id > IWL_STATION_COUNT_MAX ||
2621 !(baid_data->sta_mask & BIT(sta_id)),
2622 "baid 0x%x is mapped to sta_mask:0x%x tid:%d, but BAR release received for sta:%d tid:%d\n",
2623 baid, baid_data->sta_mask, baid_data->tid, sta_id,
2624 tid))
2625 goto out;
2626
2627 IWL_DEBUG_DROP(mvm, "Received a BAR, expect packet loss: nssn %d\n",
2628 nssn);
2629
2630 iwl_mvm_release_frames_from_notif(mvm, napi, baid, nssn, queue);
2631 out:
2632 rcu_read_unlock();
2633 }
2634
iwl_mvm_rx_beacon_filter_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)2635 void iwl_mvm_rx_beacon_filter_notif(struct iwl_mvm *mvm,
2636 struct iwl_rx_cmd_buffer *rxb)
2637 {
2638 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2639 /* MAC or link ID in v1/v2, but driver has the IDs equal */
2640 struct iwl_beacon_filter_notif *notif = (void *)pkt->data;
2641 u32 id = le32_to_cpu(notif->link_id);
2642 struct iwl_mvm_vif *mvm_vif;
2643 struct ieee80211_vif *vif;
2644
2645 /* >= means AUX MAC/link ID, no energy correction needed then */
2646 if (IWL_FW_CHECK(mvm, id >= ARRAY_SIZE(mvm->vif_id_to_mac),
2647 "invalid link ID %d\n", id))
2648 return;
2649
2650 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false);
2651 if (!vif)
2652 return;
2653
2654 mvm_vif = iwl_mvm_vif_from_mac80211(vif);
2655
2656 mvm_vif->deflink.average_beacon_energy =
2657 le32_to_cpu(notif->average_energy);
2658 }
2659