1 /******************************************************************************
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
10 * Copyright(c) 2015 - 2017 Intel Deutschland GmbH
11 * Copyright(c) 2018 Intel Corporation
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of version 2 of the GNU General Public License as
15 * published by the Free Software Foundation.
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
22 * The full GNU General Public License is included in this distribution
23 * in the file called COPYING.
25 * Contact Information:
26 * Intel Linux Wireless <ilw@linux.intel.com>
27 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
32 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
33 * Copyright(c) 2015 - 2017 Intel Deutschland GmbH
34 * Copyright(c) 2018 Intel Corporation
35 * All rights reserved.
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
41 * * Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 * * Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in
45 * the documentation and/or other materials provided with the
47 * * Neither the name Intel Corporation nor the names of its
48 * contributors may be used to endorse or promote products derived
49 * from this software without specific prior written permission.
51 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
52 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
53 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
54 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
55 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
56 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
57 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
61 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
62 *****************************************************************************/
63 #include <linux/etherdevice.h>
64 #include <linux/skbuff.h>
65 #include "iwl-trans.h"
69 static void *iwl_mvm_skb_get_hdr(struct sk_buff *skb)
71 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
74 /* Alignment concerns */
75 BUILD_BUG_ON(sizeof(struct ieee80211_radiotap_he) % 4);
76 BUILD_BUG_ON(sizeof(struct ieee80211_radiotap_he_mu) % 4);
77 BUILD_BUG_ON(sizeof(struct ieee80211_radiotap_lsig) % 4);
78 BUILD_BUG_ON(sizeof(struct ieee80211_vendor_radiotap) % 4);
80 if (rx_status->flag & RX_FLAG_RADIOTAP_HE)
81 data += sizeof(struct ieee80211_radiotap_he);
82 if (rx_status->flag & RX_FLAG_RADIOTAP_HE_MU)
83 data += sizeof(struct ieee80211_radiotap_he_mu);
84 if (rx_status->flag & RX_FLAG_RADIOTAP_LSIG)
85 data += sizeof(struct ieee80211_radiotap_lsig);
86 if (rx_status->flag & RX_FLAG_RADIOTAP_VENDOR_DATA) {
87 struct ieee80211_vendor_radiotap *radiotap = (void *)data;
89 data += sizeof(*radiotap) + radiotap->len + radiotap->pad;
95 static inline int iwl_mvm_check_pn(struct iwl_mvm *mvm, struct sk_buff *skb,
96 int queue, struct ieee80211_sta *sta)
98 struct iwl_mvm_sta *mvmsta;
99 struct ieee80211_hdr *hdr = iwl_mvm_skb_get_hdr(skb);
100 struct ieee80211_rx_status *stats = IEEE80211_SKB_RXCB(skb);
101 struct iwl_mvm_key_pn *ptk_pn;
104 u8 pn[IEEE80211_CCMP_PN_LEN];
109 /* multicast and non-data only arrives on default queue */
110 if (!ieee80211_is_data(hdr->frame_control) ||
111 is_multicast_ether_addr(hdr->addr1))
114 /* do not check PN for open AP */
115 if (!(stats->flag & RX_FLAG_DECRYPTED))
119 * avoid checking for default queue - we don't want to replicate
120 * all the logic that's necessary for checking the PN on fragmented
121 * frames, leave that to mac80211
126 /* if we are here - this for sure is either CCMP or GCMP */
127 if (IS_ERR_OR_NULL(sta)) {
129 "expected hw-decrypted unicast frame for station\n");
133 mvmsta = iwl_mvm_sta_from_mac80211(sta);
135 extiv = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control);
136 keyidx = extiv[3] >> 6;
138 ptk_pn = rcu_dereference(mvmsta->ptk_pn[keyidx]);
142 if (ieee80211_is_data_qos(hdr->frame_control))
143 tid = ieee80211_get_tid(hdr);
147 /* we don't use HCCA/802.11 QoS TSPECs, so drop such frames */
148 if (tid >= IWL_MAX_TID_COUNT)
159 res = memcmp(pn, ptk_pn->q[queue].pn[tid], IEEE80211_CCMP_PN_LEN);
162 if (!res && !(stats->flag & RX_FLAG_ALLOW_SAME_PN))
165 memcpy(ptk_pn->q[queue].pn[tid], pn, IEEE80211_CCMP_PN_LEN);
166 stats->flag |= RX_FLAG_PN_VALIDATED;
171 /* iwl_mvm_create_skb Adds the rxb to a new skb */
172 static void iwl_mvm_create_skb(struct sk_buff *skb, struct ieee80211_hdr *hdr,
173 u16 len, u8 crypt_len,
174 struct iwl_rx_cmd_buffer *rxb)
176 struct iwl_rx_packet *pkt = rxb_addr(rxb);
177 struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
178 unsigned int headlen, fraglen, pad_len = 0;
179 unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control);
181 if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
186 /* If frame is small enough to fit in skb->head, pull it completely.
187 * If not, only pull ieee80211_hdr (including crypto if present, and
188 * an additional 8 bytes for SNAP/ethertype, see below) so that
189 * splice() or TCP coalesce are more efficient.
191 * Since, in addition, ieee80211_data_to_8023() always pull in at
192 * least 8 bytes (possibly more for mesh) we can do the same here
193 * to save the cost of doing it later. That still doesn't pull in
194 * the actual IP header since the typical case has a SNAP header.
195 * If the latter changes (there are efforts in the standards group
196 * to do so) we should revisit this and ieee80211_data_to_8023().
198 headlen = (len <= skb_tailroom(skb)) ? len :
199 hdrlen + crypt_len + 8;
201 /* The firmware may align the packet to DWORD.
202 * The padding is inserted after the IV.
203 * After copying the header + IV skip the padding if
204 * present before copying packet data.
207 skb_put_data(skb, hdr, hdrlen);
208 skb_put_data(skb, (u8 *)hdr + hdrlen + pad_len, headlen - hdrlen);
210 fraglen = len - headlen;
213 int offset = (void *)hdr + headlen + pad_len -
214 rxb_addr(rxb) + rxb_offset(rxb);
216 skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset,
217 fraglen, rxb->truesize);
221 static void iwl_mvm_add_rtap_sniffer_config(struct iwl_mvm *mvm,
224 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
225 struct ieee80211_vendor_radiotap *radiotap;
226 const int size = sizeof(*radiotap) + sizeof(__le16);
231 /* ensure alignment */
232 BUILD_BUG_ON((size + 2) % 4);
234 radiotap = skb_put(skb, size + 2);
237 radiotap->oui[0] = 0xf6;
238 radiotap->oui[1] = 0x54;
239 radiotap->oui[2] = 0x25;
240 /* radiotap sniffer config sub-namespace */
242 radiotap->present = 0x1;
243 radiotap->len = size - sizeof(*radiotap);
246 /* fill the data now */
247 memcpy(radiotap->data, &mvm->cur_aid, sizeof(mvm->cur_aid));
248 /* and clear the padding */
249 memset(radiotap->data + sizeof(__le16), 0, radiotap->pad);
251 rx_status->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
254 /* iwl_mvm_pass_packet_to_mac80211 - passes the packet for mac80211 */
255 static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm,
256 struct napi_struct *napi,
257 struct sk_buff *skb, int queue,
258 struct ieee80211_sta *sta,
261 if (iwl_mvm_check_pn(mvm, skb, queue, sta))
264 ieee80211_rx_napi(mvm->hw, sta, skb, napi);
267 static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm,
268 struct ieee80211_rx_status *rx_status,
269 u32 rate_n_flags, int energy_a,
273 u32 rate_flags = rate_n_flags;
275 energy_a = energy_a ? -energy_a : S8_MIN;
276 energy_b = energy_b ? -energy_b : S8_MIN;
277 max_energy = max(energy_a, energy_b);
279 IWL_DEBUG_STATS(mvm, "energy In A %d B %d, and max %d\n",
280 energy_a, energy_b, max_energy);
282 rx_status->signal = max_energy;
284 (rate_flags & RATE_MCS_ANT_AB_MSK) >> RATE_MCS_ANT_POS;
285 rx_status->chain_signal[0] = energy_a;
286 rx_status->chain_signal[1] = energy_b;
287 rx_status->chain_signal[2] = S8_MIN;
290 static int iwl_mvm_rx_crypto(struct iwl_mvm *mvm, struct ieee80211_hdr *hdr,
291 struct ieee80211_rx_status *stats, u16 phy_info,
292 struct iwl_rx_mpdu_desc *desc,
293 u32 pkt_flags, int queue, u8 *crypt_len)
295 u16 status = le16_to_cpu(desc->status);
298 * Drop UNKNOWN frames in aggregation, unless in monitor mode
299 * (where we don't have the keys).
300 * We limit this to aggregation because in TKIP this is a valid
301 * scenario, since we may not have the (correct) TTAK (phase 1
302 * key) in the firmware.
304 if (phy_info & IWL_RX_MPDU_PHY_AMPDU &&
305 (status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
306 IWL_RX_MPDU_STATUS_SEC_UNKNOWN && !mvm->monitor_on)
309 if (!ieee80211_has_protected(hdr->frame_control) ||
310 (status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
311 IWL_RX_MPDU_STATUS_SEC_NONE)
314 /* TODO: handle packets encrypted with unknown alg */
316 switch (status & IWL_RX_MPDU_STATUS_SEC_MASK) {
317 case IWL_RX_MPDU_STATUS_SEC_CCM:
318 case IWL_RX_MPDU_STATUS_SEC_GCM:
319 BUILD_BUG_ON(IEEE80211_CCMP_PN_LEN != IEEE80211_GCMP_PN_LEN);
320 /* alg is CCM: check MIC only */
321 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
324 stats->flag |= RX_FLAG_DECRYPTED;
325 if (pkt_flags & FH_RSCSR_RADA_EN)
326 stats->flag |= RX_FLAG_MIC_STRIPPED;
327 *crypt_len = IEEE80211_CCMP_HDR_LEN;
329 case IWL_RX_MPDU_STATUS_SEC_TKIP:
330 /* Don't drop the frame and decrypt it in SW */
331 if (!fw_has_api(&mvm->fw->ucode_capa,
332 IWL_UCODE_TLV_API_DEPRECATE_TTAK) &&
333 !(status & IWL_RX_MPDU_RES_STATUS_TTAK_OK))
336 if (mvm->trans->cfg->gen2 &&
337 !(status & RX_MPDU_RES_STATUS_MIC_OK))
338 stats->flag |= RX_FLAG_MMIC_ERROR;
340 *crypt_len = IEEE80211_TKIP_IV_LEN;
342 case IWL_RX_MPDU_STATUS_SEC_WEP:
343 if (!(status & IWL_RX_MPDU_STATUS_ICV_OK))
346 stats->flag |= RX_FLAG_DECRYPTED;
347 if ((status & IWL_RX_MPDU_STATUS_SEC_MASK) ==
348 IWL_RX_MPDU_STATUS_SEC_WEP)
349 *crypt_len = IEEE80211_WEP_IV_LEN;
351 if (pkt_flags & FH_RSCSR_RADA_EN) {
352 stats->flag |= RX_FLAG_ICV_STRIPPED;
353 if (mvm->trans->cfg->gen2)
354 stats->flag |= RX_FLAG_MMIC_STRIPPED;
358 case IWL_RX_MPDU_STATUS_SEC_EXT_ENC:
359 if (!(status & IWL_RX_MPDU_STATUS_MIC_OK))
361 stats->flag |= RX_FLAG_DECRYPTED;
364 /* Expected in monitor (not having the keys) */
365 if (!mvm->monitor_on)
366 IWL_ERR(mvm, "Unhandled alg: 0x%x\n", status);
372 static void iwl_mvm_rx_csum(struct ieee80211_sta *sta,
374 struct iwl_rx_mpdu_desc *desc)
376 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
377 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
378 u16 flags = le16_to_cpu(desc->l3l4_flags);
379 u8 l3_prot = (u8)((flags & IWL_RX_L3L4_L3_PROTO_MASK) >>
380 IWL_RX_L3_PROTO_POS);
382 if (mvmvif->features & NETIF_F_RXCSUM &&
383 flags & IWL_RX_L3L4_TCP_UDP_CSUM_OK &&
384 (flags & IWL_RX_L3L4_IP_HDR_CSUM_OK ||
385 l3_prot == IWL_RX_L3_TYPE_IPV6 ||
386 l3_prot == IWL_RX_L3_TYPE_IPV6_FRAG))
387 skb->ip_summed = CHECKSUM_UNNECESSARY;
391 * returns true if a packet is a duplicate and should be dropped.
392 * Updates AMSDU PN tracking info
394 static bool iwl_mvm_is_dup(struct ieee80211_sta *sta, int queue,
395 struct ieee80211_rx_status *rx_status,
396 struct ieee80211_hdr *hdr,
397 struct iwl_rx_mpdu_desc *desc)
399 struct iwl_mvm_sta *mvm_sta;
400 struct iwl_mvm_rxq_dup_data *dup_data;
401 u8 tid, sub_frame_idx;
403 if (WARN_ON(IS_ERR_OR_NULL(sta)))
406 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
407 dup_data = &mvm_sta->dup_data[queue];
410 * Drop duplicate 802.11 retransmissions
411 * (IEEE 802.11-2012: 9.3.2.10 "Duplicate detection and recovery")
413 if (ieee80211_is_ctl(hdr->frame_control) ||
414 ieee80211_is_qos_nullfunc(hdr->frame_control) ||
415 is_multicast_ether_addr(hdr->addr1)) {
416 rx_status->flag |= RX_FLAG_DUP_VALIDATED;
420 if (ieee80211_is_data_qos(hdr->frame_control))
421 /* frame has qos control */
422 tid = ieee80211_get_tid(hdr);
424 tid = IWL_MAX_TID_COUNT;
426 /* If this wasn't a part of an A-MSDU the sub-frame index will be 0 */
427 sub_frame_idx = desc->amsdu_info &
428 IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
430 if (unlikely(ieee80211_has_retry(hdr->frame_control) &&
431 dup_data->last_seq[tid] == hdr->seq_ctrl &&
432 dup_data->last_sub_frame[tid] >= sub_frame_idx))
435 /* Allow same PN as the first subframe for following sub frames */
436 if (dup_data->last_seq[tid] == hdr->seq_ctrl &&
437 sub_frame_idx > dup_data->last_sub_frame[tid] &&
438 desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU)
439 rx_status->flag |= RX_FLAG_ALLOW_SAME_PN;
441 dup_data->last_seq[tid] = hdr->seq_ctrl;
442 dup_data->last_sub_frame[tid] = sub_frame_idx;
444 rx_status->flag |= RX_FLAG_DUP_VALIDATED;
449 int iwl_mvm_notify_rx_queue(struct iwl_mvm *mvm, u32 rxq_mask,
450 const u8 *data, u32 count)
452 struct iwl_rxq_sync_cmd *cmd;
453 u32 data_size = sizeof(*cmd) + count;
456 /* should be DWORD aligned */
457 if (WARN_ON(count & 3 || count > IWL_MULTI_QUEUE_SYNC_MSG_MAX_SIZE))
460 cmd = kzalloc(data_size, GFP_KERNEL);
464 cmd->rxq_mask = cpu_to_le32(rxq_mask);
465 cmd->count = cpu_to_le32(count);
467 memcpy(cmd->payload, data, count);
469 ret = iwl_mvm_send_cmd_pdu(mvm,
470 WIDE_ID(DATA_PATH_GROUP,
471 TRIGGER_RX_QUEUES_NOTIF_CMD),
479 * Returns true if sn2 - buffer_size < sn1 < sn2.
480 * To be used only in order to compare reorder buffer head with NSSN.
481 * We fully trust NSSN unless it is behind us due to reorder timeout.
482 * Reorder timeout can only bring us up to buffer_size SNs ahead of NSSN.
484 static bool iwl_mvm_is_sn_less(u16 sn1, u16 sn2, u16 buffer_size)
486 return ieee80211_sn_less(sn1, sn2) &&
487 !ieee80211_sn_less(sn1, sn2 - buffer_size);
490 #define RX_REORDER_BUF_TIMEOUT_MQ (HZ / 10)
492 static void iwl_mvm_release_frames(struct iwl_mvm *mvm,
493 struct ieee80211_sta *sta,
494 struct napi_struct *napi,
495 struct iwl_mvm_baid_data *baid_data,
496 struct iwl_mvm_reorder_buffer *reorder_buf,
499 struct iwl_mvm_reorder_buf_entry *entries =
500 &baid_data->entries[reorder_buf->queue *
501 baid_data->entries_per_queue];
502 u16 ssn = reorder_buf->head_sn;
504 lockdep_assert_held(&reorder_buf->lock);
506 /* ignore nssn smaller than head sn - this can happen due to timeout */
507 if (iwl_mvm_is_sn_less(nssn, ssn, reorder_buf->buf_size))
510 while (iwl_mvm_is_sn_less(ssn, nssn, reorder_buf->buf_size)) {
511 int index = ssn % reorder_buf->buf_size;
512 struct sk_buff_head *skb_list = &entries[index].e.frames;
515 ssn = ieee80211_sn_inc(ssn);
518 * Empty the list. Will have more than one frame for A-MSDU.
519 * Empty list is valid as well since nssn indicates frames were
522 while ((skb = __skb_dequeue(skb_list))) {
523 iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb,
526 reorder_buf->num_stored--;
529 reorder_buf->head_sn = nssn;
532 if (reorder_buf->num_stored && !reorder_buf->removed) {
533 u16 index = reorder_buf->head_sn % reorder_buf->buf_size;
535 while (skb_queue_empty(&entries[index].e.frames))
536 index = (index + 1) % reorder_buf->buf_size;
537 /* modify timer to match next frame's expiration time */
538 mod_timer(&reorder_buf->reorder_timer,
539 entries[index].e.reorder_time + 1 +
540 RX_REORDER_BUF_TIMEOUT_MQ);
542 del_timer(&reorder_buf->reorder_timer);
546 void iwl_mvm_reorder_timer_expired(struct timer_list *t)
548 struct iwl_mvm_reorder_buffer *buf = from_timer(buf, t, reorder_timer);
549 struct iwl_mvm_baid_data *baid_data =
550 iwl_mvm_baid_data_from_reorder_buf(buf);
551 struct iwl_mvm_reorder_buf_entry *entries =
552 &baid_data->entries[buf->queue * baid_data->entries_per_queue];
554 u16 sn = 0, index = 0;
555 bool expired = false;
558 spin_lock(&buf->lock);
560 if (!buf->num_stored || buf->removed) {
561 spin_unlock(&buf->lock);
565 for (i = 0; i < buf->buf_size ; i++) {
566 index = (buf->head_sn + i) % buf->buf_size;
568 if (skb_queue_empty(&entries[index].e.frames)) {
570 * If there is a hole and the next frame didn't expire
571 * we want to break and not advance SN
577 !time_after(jiffies, entries[index].e.reorder_time +
578 RX_REORDER_BUF_TIMEOUT_MQ))
582 /* continue until next hole after this expired frames */
584 sn = ieee80211_sn_add(buf->head_sn, i + 1);
588 struct ieee80211_sta *sta;
589 struct iwl_mvm_sta *mvmsta;
590 u8 sta_id = baid_data->sta_id;
593 sta = rcu_dereference(buf->mvm->fw_id_to_mac_id[sta_id]);
594 mvmsta = iwl_mvm_sta_from_mac80211(sta);
596 /* SN is set to the last expired frame + 1 */
597 IWL_DEBUG_HT(buf->mvm,
598 "Releasing expired frames for sta %u, sn %d\n",
600 iwl_mvm_event_frame_timeout_callback(buf->mvm, mvmsta->vif,
601 sta, baid_data->tid);
602 iwl_mvm_release_frames(buf->mvm, sta, NULL, baid_data, buf, sn);
606 * If no frame expired and there are stored frames, index is now
607 * pointing to the first unexpired frame - modify timer
608 * accordingly to this frame.
610 mod_timer(&buf->reorder_timer,
611 entries[index].e.reorder_time +
612 1 + RX_REORDER_BUF_TIMEOUT_MQ);
614 spin_unlock(&buf->lock);
617 static void iwl_mvm_del_ba(struct iwl_mvm *mvm, int queue,
618 struct iwl_mvm_delba_data *data)
620 struct iwl_mvm_baid_data *ba_data;
621 struct ieee80211_sta *sta;
622 struct iwl_mvm_reorder_buffer *reorder_buf;
623 u8 baid = data->baid;
625 if (WARN_ONCE(baid >= IWL_MAX_BAID, "invalid BAID: %x\n", baid))
630 ba_data = rcu_dereference(mvm->baid_map[baid]);
631 if (WARN_ON_ONCE(!ba_data))
634 sta = rcu_dereference(mvm->fw_id_to_mac_id[ba_data->sta_id]);
635 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
638 reorder_buf = &ba_data->reorder_buf[queue];
640 /* release all frames that are in the reorder buffer to the stack */
641 spin_lock_bh(&reorder_buf->lock);
642 iwl_mvm_release_frames(mvm, sta, NULL, ba_data, reorder_buf,
643 ieee80211_sn_add(reorder_buf->head_sn,
644 reorder_buf->buf_size));
645 spin_unlock_bh(&reorder_buf->lock);
646 del_timer_sync(&reorder_buf->reorder_timer);
652 void iwl_mvm_rx_queue_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
655 struct iwl_rx_packet *pkt = rxb_addr(rxb);
656 struct iwl_rxq_sync_notification *notif;
657 struct iwl_mvm_internal_rxq_notif *internal_notif;
659 notif = (void *)pkt->data;
660 internal_notif = (void *)notif->payload;
662 if (internal_notif->sync &&
663 mvm->queue_sync_cookie != internal_notif->cookie) {
664 WARN_ONCE(1, "Received expired RX queue sync message\n");
668 switch (internal_notif->type) {
669 case IWL_MVM_RXQ_EMPTY:
671 case IWL_MVM_RXQ_NOTIF_DEL_BA:
672 iwl_mvm_del_ba(mvm, queue, (void *)internal_notif->data);
675 WARN_ONCE(1, "Invalid identifier %d", internal_notif->type);
678 if (internal_notif->sync &&
679 !atomic_dec_return(&mvm->queue_sync_counter))
680 wake_up(&mvm->rx_sync_waitq);
684 * Returns true if the MPDU was buffered\dropped, false if it should be passed
687 static bool iwl_mvm_reorder(struct iwl_mvm *mvm,
688 struct napi_struct *napi,
690 struct ieee80211_sta *sta,
692 struct iwl_rx_mpdu_desc *desc)
694 struct ieee80211_hdr *hdr = iwl_mvm_skb_get_hdr(skb);
695 struct iwl_mvm_sta *mvm_sta;
696 struct iwl_mvm_baid_data *baid_data;
697 struct iwl_mvm_reorder_buffer *buffer;
698 struct sk_buff *tail;
699 u32 reorder = le32_to_cpu(desc->reorder_data);
700 bool amsdu = desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU;
702 desc->amsdu_info & IWL_RX_MPDU_AMSDU_LAST_SUBFRAME;
703 u8 tid = ieee80211_get_tid(hdr);
704 u8 sub_frame_idx = desc->amsdu_info &
705 IWL_RX_MPDU_AMSDU_SUBFRAME_IDX_MASK;
706 struct iwl_mvm_reorder_buf_entry *entries;
711 baid = (reorder & IWL_RX_MPDU_REORDER_BAID_MASK) >>
712 IWL_RX_MPDU_REORDER_BAID_SHIFT;
715 * This also covers the case of receiving a Block Ack Request
716 * outside a BA session; we'll pass it to mac80211 and that
717 * then sends a delBA action frame.
718 * This also covers pure monitor mode, in which case we won't
719 * have any BA sessions.
721 if (baid == IWL_RX_REORDER_DATA_INVALID_BAID)
725 if (WARN_ONCE(IS_ERR_OR_NULL(sta),
726 "Got valid BAID without a valid station assigned\n"))
729 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
731 /* not a data packet or a bar */
732 if (!ieee80211_is_back_req(hdr->frame_control) &&
733 (!ieee80211_is_data_qos(hdr->frame_control) ||
734 is_multicast_ether_addr(hdr->addr1)))
737 if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
740 baid_data = rcu_dereference(mvm->baid_map[baid]);
743 "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
748 if (WARN(tid != baid_data->tid || mvm_sta->sta_id != baid_data->sta_id,
749 "baid 0x%x is mapped to sta:%d tid:%d, but was received for sta:%d tid:%d\n",
750 baid, baid_data->sta_id, baid_data->tid, mvm_sta->sta_id,
754 nssn = reorder & IWL_RX_MPDU_REORDER_NSSN_MASK;
755 sn = (reorder & IWL_RX_MPDU_REORDER_SN_MASK) >>
756 IWL_RX_MPDU_REORDER_SN_SHIFT;
758 buffer = &baid_data->reorder_buf[queue];
759 entries = &baid_data->entries[queue * baid_data->entries_per_queue];
761 spin_lock_bh(&buffer->lock);
763 if (!buffer->valid) {
764 if (reorder & IWL_RX_MPDU_REORDER_BA_OLD_SN) {
765 spin_unlock_bh(&buffer->lock);
768 buffer->valid = true;
771 if (ieee80211_is_back_req(hdr->frame_control)) {
772 iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer, nssn);
777 * If there was a significant jump in the nssn - adjust.
778 * If the SN is smaller than the NSSN it might need to first go into
779 * the reorder buffer, in which case we just release up to it and the
780 * rest of the function will take care of storing it and releasing up to
783 if (!iwl_mvm_is_sn_less(nssn, buffer->head_sn + buffer->buf_size,
785 !ieee80211_sn_less(sn, buffer->head_sn + buffer->buf_size)) {
786 u16 min_sn = ieee80211_sn_less(sn, nssn) ? sn : nssn;
788 iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer,
792 /* drop any oudated packets */
793 if (ieee80211_sn_less(sn, buffer->head_sn))
796 /* release immediately if allowed by nssn and no stored frames */
797 if (!buffer->num_stored && ieee80211_sn_less(sn, nssn)) {
798 if (iwl_mvm_is_sn_less(buffer->head_sn, nssn,
800 (!amsdu || last_subframe))
801 buffer->head_sn = nssn;
802 /* No need to update AMSDU last SN - we are moving the head */
803 spin_unlock_bh(&buffer->lock);
808 * release immediately if there are no stored frames, and the sn is
810 * This can happen due to reorder timer, where NSSN is behind head_sn.
811 * When we released everything, and we got the next frame in the
812 * sequence, according to the NSSN we can't release immediately,
813 * while technically there is no hole and we can move forward.
815 if (!buffer->num_stored && sn == buffer->head_sn) {
816 if (!amsdu || last_subframe)
817 buffer->head_sn = ieee80211_sn_inc(buffer->head_sn);
818 /* No need to update AMSDU last SN - we are moving the head */
819 spin_unlock_bh(&buffer->lock);
823 index = sn % buffer->buf_size;
826 * Check if we already stored this frame
827 * As AMSDU is either received or not as whole, logic is simple:
828 * If we have frames in that position in the buffer and the last frame
829 * originated from AMSDU had a different SN then it is a retransmission.
830 * If it is the same SN then if the subframe index is incrementing it
831 * is the same AMSDU - otherwise it is a retransmission.
833 tail = skb_peek_tail(&entries[index].e.frames);
836 else if (tail && (sn != buffer->last_amsdu ||
837 buffer->last_sub_index >= sub_frame_idx))
840 /* put in reorder buffer */
841 __skb_queue_tail(&entries[index].e.frames, skb);
842 buffer->num_stored++;
843 entries[index].e.reorder_time = jiffies;
846 buffer->last_amsdu = sn;
847 buffer->last_sub_index = sub_frame_idx;
851 * We cannot trust NSSN for AMSDU sub-frames that are not the last.
852 * The reason is that NSSN advances on the first sub-frame, and may
853 * cause the reorder buffer to advance before all the sub-frames arrive.
854 * Example: reorder buffer contains SN 0 & 2, and we receive AMSDU with
855 * SN 1. NSSN for first sub frame will be 3 with the result of driver
856 * releasing SN 0,1, 2. When sub-frame 1 arrives - reorder buffer is
857 * already ahead and it will be dropped.
858 * If the last sub-frame is not on this queue - we will get frame
859 * release notification with up to date NSSN.
861 if (!amsdu || last_subframe)
862 iwl_mvm_release_frames(mvm, sta, napi, baid_data, buffer, nssn);
864 spin_unlock_bh(&buffer->lock);
869 spin_unlock_bh(&buffer->lock);
873 static void iwl_mvm_agg_rx_received(struct iwl_mvm *mvm,
874 u32 reorder_data, u8 baid)
876 unsigned long now = jiffies;
877 unsigned long timeout;
878 struct iwl_mvm_baid_data *data;
882 data = rcu_dereference(mvm->baid_map[baid]);
885 "Got valid BAID but no baid allocated, bypass the re-ordering buffer. Baid %d reorder 0x%x\n",
893 timeout = data->timeout;
895 * Do not update last rx all the time to avoid cache bouncing
896 * between the rx queues.
897 * Update it every timeout. Worst case is the session will
898 * expire after ~ 2 * timeout, which doesn't matter that much.
900 if (time_before(data->last_rx + TU_TO_JIFFIES(timeout), now))
901 /* Update is atomic */
908 static void iwl_mvm_flip_address(u8 *addr)
911 u8 mac_addr[ETH_ALEN];
913 for (i = 0; i < ETH_ALEN; i++)
914 mac_addr[i] = addr[ETH_ALEN - i - 1];
915 ether_addr_copy(addr, mac_addr);
918 struct iwl_mvm_rx_phy_data {
919 enum iwl_rx_phy_info_type info_type;
920 __le32 d0, d1, d2, d3;
924 static void iwl_mvm_decode_he_mu_ext(struct iwl_mvm *mvm,
925 struct iwl_mvm_rx_phy_data *phy_data,
927 struct ieee80211_radiotap_he_mu *he_mu)
929 u32 phy_data2 = le32_to_cpu(phy_data->d2);
930 u32 phy_data3 = le32_to_cpu(phy_data->d3);
931 u16 phy_data4 = le16_to_cpu(phy_data->d4);
933 if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CRC_OK, phy_data4)) {
935 cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_RU_KNOWN |
936 IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU_KNOWN);
939 le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH1_CTR_RU,
941 IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH1_CTR_26T_RU);
943 he_mu->ru_ch1[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU0,
945 he_mu->ru_ch1[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU1,
947 he_mu->ru_ch1[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH1_RU2,
949 he_mu->ru_ch1[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH1_RU3,
953 if (FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CRC_OK, phy_data4) &&
954 (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) != RATE_MCS_CHAN_WIDTH_20) {
956 cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_RU_KNOWN |
957 IEEE80211_RADIOTAP_HE_MU_FLAGS1_CH2_CTR_26T_RU_KNOWN);
960 le16_encode_bits(FIELD_GET(IWL_RX_PHY_DATA4_HE_MU_EXT_CH2_CTR_RU,
962 IEEE80211_RADIOTAP_HE_MU_FLAGS2_CH2_CTR_26T_RU);
964 he_mu->ru_ch2[0] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU0,
966 he_mu->ru_ch2[1] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU1,
968 he_mu->ru_ch2[2] = FIELD_GET(IWL_RX_PHY_DATA2_HE_MU_EXT_CH2_RU2,
970 he_mu->ru_ch2[3] = FIELD_GET(IWL_RX_PHY_DATA3_HE_MU_EXT_CH2_RU3,
976 iwl_mvm_decode_he_phy_ru_alloc(struct iwl_mvm_rx_phy_data *phy_data,
978 struct ieee80211_radiotap_he *he,
979 struct ieee80211_radiotap_he_mu *he_mu,
980 struct ieee80211_rx_status *rx_status)
983 * Unfortunately, we have to leave the mac80211 data
984 * incorrect for the case that we receive an HE-MU
985 * transmission and *don't* have the HE phy data (due
986 * to the bits being used for TSF). This shouldn't
987 * happen though as management frames where we need
988 * the TSF/timers are not be transmitted in HE-MU.
990 u8 ru = le32_get_bits(phy_data->d1, IWL_RX_PHY_DATA1_HE_RU_ALLOC_MASK);
991 u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
994 rx_status->bw = RATE_INFO_BW_HE_RU;
996 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
1000 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_26;
1004 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_52;
1008 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
1012 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_242;
1016 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_484;
1020 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_996;
1023 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_2x996;
1026 he->data2 |= le16_encode_bits(offs,
1027 IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET);
1028 he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_KNOWN |
1029 IEEE80211_RADIOTAP_HE_DATA2_RU_OFFSET_KNOWN);
1030 if (phy_data->d1 & cpu_to_le32(IWL_RX_PHY_DATA1_HE_RU_ALLOC_SEC80))
1032 cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRISEC_80_SEC);
1034 #define CHECK_BW(bw) \
1035 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_ ## bw ## MHZ != \
1036 RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS); \
1037 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_ ## bw ## MHZ != \
1038 RATE_MCS_CHAN_WIDTH_##bw >> RATE_MCS_CHAN_WIDTH_POS)
1046 le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK,
1048 IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW);
1049 else if (he_type == RATE_MCS_HE_TYPE_TRIG)
1051 cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW_KNOWN) |
1052 le16_encode_bits(FIELD_GET(RATE_MCS_CHAN_WIDTH_MSK,
1054 IEEE80211_RADIOTAP_HE_DATA6_TB_PPDU_BW);
1057 static void iwl_mvm_decode_he_phy_data(struct iwl_mvm *mvm,
1058 struct iwl_mvm_rx_phy_data *phy_data,
1059 struct ieee80211_radiotap_he *he,
1060 struct ieee80211_radiotap_he_mu *he_mu,
1061 struct ieee80211_rx_status *rx_status,
1062 u32 rate_n_flags, int queue)
1064 switch (phy_data->info_type) {
1065 case IWL_RX_PHY_INFO_TYPE_NONE:
1066 case IWL_RX_PHY_INFO_TYPE_CCK:
1067 case IWL_RX_PHY_INFO_TYPE_OFDM_LGCY:
1068 case IWL_RX_PHY_INFO_TYPE_HT:
1069 case IWL_RX_PHY_INFO_TYPE_VHT_SU:
1070 case IWL_RX_PHY_INFO_TYPE_VHT_MU:
1072 case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1073 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN |
1074 IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE2_KNOWN |
1075 IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE3_KNOWN |
1076 IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE4_KNOWN);
1077 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1078 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE1),
1079 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE1);
1080 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1081 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE2),
1082 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE2);
1083 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1084 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE3),
1085 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE3);
1086 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d2,
1087 IWL_RX_PHY_DATA2_HE_TB_EXT_SPTL_REUSE4),
1088 IEEE80211_RADIOTAP_HE_DATA4_TB_SPTL_REUSE4);
1090 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1091 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1092 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1093 case IWL_RX_PHY_INFO_TYPE_HE_TB:
1095 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_LDPC_XSYMSEG_KNOWN |
1096 IEEE80211_RADIOTAP_HE_DATA1_DOPPLER_KNOWN |
1097 IEEE80211_RADIOTAP_HE_DATA1_BSS_COLOR_KNOWN);
1098 he->data2 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_PRE_FEC_PAD_KNOWN |
1099 IEEE80211_RADIOTAP_HE_DATA2_PE_DISAMBIG_KNOWN |
1100 IEEE80211_RADIOTAP_HE_DATA2_TXOP_KNOWN |
1101 IEEE80211_RADIOTAP_HE_DATA2_NUM_LTF_SYMS_KNOWN);
1102 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1103 IWL_RX_PHY_DATA0_HE_BSS_COLOR_MASK),
1104 IEEE80211_RADIOTAP_HE_DATA3_BSS_COLOR);
1105 if (phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB &&
1106 phy_data->info_type != IWL_RX_PHY_INFO_TYPE_HE_TB_EXT) {
1107 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_UL_DL_KNOWN);
1108 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1109 IWL_RX_PHY_DATA0_HE_UPLINK),
1110 IEEE80211_RADIOTAP_HE_DATA3_UL_DL);
1112 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1113 IWL_RX_PHY_DATA0_HE_LDPC_EXT_SYM),
1114 IEEE80211_RADIOTAP_HE_DATA3_LDPC_XSYMSEG);
1115 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1116 IWL_RX_PHY_DATA0_HE_PRE_FEC_PAD_MASK),
1117 IEEE80211_RADIOTAP_HE_DATA5_PRE_FEC_PAD);
1118 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1119 IWL_RX_PHY_DATA0_HE_PE_DISAMBIG),
1120 IEEE80211_RADIOTAP_HE_DATA5_PE_DISAMBIG);
1121 he->data5 |= le16_encode_bits(le32_get_bits(phy_data->d1,
1122 IWL_RX_PHY_DATA1_HE_LTF_NUM_MASK),
1123 IEEE80211_RADIOTAP_HE_DATA5_NUM_LTF_SYMS);
1124 he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1125 IWL_RX_PHY_DATA0_HE_TXOP_DUR_MASK),
1126 IEEE80211_RADIOTAP_HE_DATA6_TXOP);
1127 he->data6 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1128 IWL_RX_PHY_DATA0_HE_DOPPLER),
1129 IEEE80211_RADIOTAP_HE_DATA6_DOPPLER);
1133 switch (phy_data->info_type) {
1134 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1135 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1136 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1137 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_SPTL_REUSE_KNOWN);
1138 he->data4 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1139 IWL_RX_PHY_DATA0_HE_SPATIAL_REUSE_MASK),
1140 IEEE80211_RADIOTAP_HE_DATA4_SU_MU_SPTL_REUSE);
1147 switch (phy_data->info_type) {
1148 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1150 le16_encode_bits(le16_get_bits(phy_data->d4,
1151 IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_DCM),
1152 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM);
1154 le16_encode_bits(le16_get_bits(phy_data->d4,
1155 IWL_RX_PHY_DATA4_HE_MU_EXT_SIGB_MCS_MASK),
1156 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS);
1158 le16_encode_bits(le16_get_bits(phy_data->d4,
1159 IWL_RX_PHY_DATA4_HE_MU_EXT_PREAMBLE_PUNC_TYPE_MASK),
1160 IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW);
1161 iwl_mvm_decode_he_mu_ext(mvm, phy_data, rate_n_flags, he_mu);
1163 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1165 le16_encode_bits(le32_get_bits(phy_data->d1,
1166 IWL_RX_PHY_DATA1_HE_MU_SIBG_SYM_OR_USER_NUM_MASK),
1167 IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_SYMS_USERS);
1169 le16_encode_bits(le32_get_bits(phy_data->d1,
1170 IWL_RX_PHY_DATA1_HE_MU_SIGB_COMPRESSION),
1171 IEEE80211_RADIOTAP_HE_MU_FLAGS2_SIG_B_COMP);
1173 case IWL_RX_PHY_INFO_TYPE_HE_TB:
1174 case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1175 iwl_mvm_decode_he_phy_ru_alloc(phy_data, rate_n_flags,
1176 he, he_mu, rx_status);
1178 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1179 he->data1 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BEAM_CHANGE_KNOWN);
1180 he->data3 |= le16_encode_bits(le32_get_bits(phy_data->d0,
1181 IWL_RX_PHY_DATA0_HE_BEAM_CHNG),
1182 IEEE80211_RADIOTAP_HE_DATA3_BEAM_CHANGE);
1190 static void iwl_mvm_rx_he(struct iwl_mvm *mvm, struct sk_buff *skb,
1191 struct iwl_mvm_rx_phy_data *phy_data,
1192 u32 rate_n_flags, u16 phy_info, int queue)
1194 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1195 struct ieee80211_radiotap_he *he = NULL;
1196 struct ieee80211_radiotap_he_mu *he_mu = NULL;
1197 u32 he_type = rate_n_flags & RATE_MCS_HE_TYPE_MSK;
1199 static const struct ieee80211_radiotap_he known = {
1200 .data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN |
1201 IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN |
1202 IEEE80211_RADIOTAP_HE_DATA1_STBC_KNOWN |
1203 IEEE80211_RADIOTAP_HE_DATA1_CODING_KNOWN),
1204 .data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN |
1205 IEEE80211_RADIOTAP_HE_DATA2_TXBF_KNOWN),
1207 static const struct ieee80211_radiotap_he_mu mu_known = {
1208 .flags1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_MCS_KNOWN |
1209 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_DCM_KNOWN |
1210 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_SYMS_USERS_KNOWN |
1211 IEEE80211_RADIOTAP_HE_MU_FLAGS1_SIG_B_COMP_KNOWN),
1212 .flags2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_MU_FLAGS2_PUNC_FROM_SIG_A_BW_KNOWN |
1213 IEEE80211_RADIOTAP_HE_MU_FLAGS2_BW_FROM_SIG_A_BW_KNOWN),
1216 he = skb_put_data(skb, &known, sizeof(known));
1217 rx_status->flag |= RX_FLAG_RADIOTAP_HE;
1219 if (phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU ||
1220 phy_data->info_type == IWL_RX_PHY_INFO_TYPE_HE_MU_EXT) {
1221 he_mu = skb_put_data(skb, &mu_known, sizeof(mu_known));
1222 rx_status->flag |= RX_FLAG_RADIOTAP_HE_MU;
1225 /* report the AMPDU-EOF bit on single frames */
1226 if (!queue && !(phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1227 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
1228 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1229 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF))
1230 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1233 if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1234 iwl_mvm_decode_he_phy_data(mvm, phy_data, he, he_mu, rx_status,
1235 rate_n_flags, queue);
1237 /* update aggregation data for monitor sake on default queue */
1238 if (!queue && (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD) &&
1239 (phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1240 bool toggle_bit = phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE;
1242 /* toggle is switched whenever new aggregation starts */
1243 if (toggle_bit != mvm->ampdu_toggle) {
1244 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT_KNOWN;
1245 if (phy_data->d0 & cpu_to_le32(IWL_RX_PHY_DATA0_HE_DELIM_EOF))
1246 rx_status->flag |= RX_FLAG_AMPDU_EOF_BIT;
1250 if (he_type == RATE_MCS_HE_TYPE_EXT_SU &&
1251 rate_n_flags & RATE_MCS_HE_106T_MSK) {
1252 rx_status->bw = RATE_INFO_BW_HE_RU;
1253 rx_status->he_ru = NL80211_RATE_INFO_HE_RU_ALLOC_106;
1256 /* actually data is filled in mac80211 */
1257 if (he_type == RATE_MCS_HE_TYPE_SU ||
1258 he_type == RATE_MCS_HE_TYPE_EXT_SU)
1260 cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
1262 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >> RATE_MCS_STBC_POS;
1264 ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
1265 RATE_VHT_MCS_NSS_POS) + 1;
1266 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
1267 rx_status->encoding = RX_ENC_HE;
1268 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1269 if (rate_n_flags & RATE_MCS_BF_MSK)
1270 rx_status->enc_flags |= RX_ENC_FLAG_BF;
1273 !!(rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK);
1275 #define CHECK_TYPE(F) \
1276 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_ ## F != \
1277 (RATE_MCS_HE_TYPE_ ## F >> RATE_MCS_HE_TYPE_POS))
1284 he->data1 |= cpu_to_le16(he_type >> RATE_MCS_HE_TYPE_POS);
1286 if (rate_n_flags & RATE_MCS_BF_MSK)
1287 he->data5 |= cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA5_TXBF);
1289 switch ((rate_n_flags & RATE_MCS_HE_GI_LTF_MSK) >>
1290 RATE_MCS_HE_GI_LTF_POS) {
1292 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1293 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1295 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1296 if (he_type == RATE_MCS_HE_TYPE_MU)
1297 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1299 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
1302 if (he_type == RATE_MCS_HE_TYPE_TRIG)
1303 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1305 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1306 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1309 if (he_type == RATE_MCS_HE_TYPE_TRIG) {
1310 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
1311 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1313 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
1314 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
1318 if ((he_type == RATE_MCS_HE_TYPE_SU ||
1319 he_type == RATE_MCS_HE_TYPE_EXT_SU) &&
1320 rate_n_flags & RATE_MCS_SGI_MSK)
1321 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
1323 rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
1324 ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
1328 he->data5 |= le16_encode_bits(ltf,
1329 IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE);
1332 static void iwl_mvm_decode_lsig(struct sk_buff *skb,
1333 struct iwl_mvm_rx_phy_data *phy_data)
1335 struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
1336 struct ieee80211_radiotap_lsig *lsig;
1338 switch (phy_data->info_type) {
1339 case IWL_RX_PHY_INFO_TYPE_HT:
1340 case IWL_RX_PHY_INFO_TYPE_VHT_SU:
1341 case IWL_RX_PHY_INFO_TYPE_VHT_MU:
1342 case IWL_RX_PHY_INFO_TYPE_HE_TB_EXT:
1343 case IWL_RX_PHY_INFO_TYPE_HE_SU:
1344 case IWL_RX_PHY_INFO_TYPE_HE_MU:
1345 case IWL_RX_PHY_INFO_TYPE_HE_MU_EXT:
1346 case IWL_RX_PHY_INFO_TYPE_HE_TB:
1347 lsig = skb_put(skb, sizeof(*lsig));
1348 lsig->data1 = cpu_to_le16(IEEE80211_RADIOTAP_LSIG_DATA1_LENGTH_KNOWN);
1349 lsig->data2 = le16_encode_bits(le32_get_bits(phy_data->d1,
1350 IWL_RX_PHY_DATA1_LSIG_LEN_MASK),
1351 IEEE80211_RADIOTAP_LSIG_DATA2_LENGTH);
1352 rx_status->flag |= RX_FLAG_RADIOTAP_LSIG;
1359 void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
1360 struct iwl_rx_cmd_buffer *rxb, int queue)
1362 struct ieee80211_rx_status *rx_status;
1363 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1364 struct iwl_rx_mpdu_desc *desc = (void *)pkt->data;
1365 struct ieee80211_hdr *hdr;
1366 u32 len = le16_to_cpu(desc->mpdu_len);
1367 u32 rate_n_flags, gp2_on_air_rise;
1368 u16 phy_info = le16_to_cpu(desc->phy_info);
1369 struct ieee80211_sta *sta = NULL;
1370 struct sk_buff *skb;
1371 u8 crypt_len = 0, channel, energy_a, energy_b;
1373 struct iwl_mvm_rx_phy_data phy_data = {
1374 .d4 = desc->phy_data4,
1375 .info_type = IWL_RX_PHY_INFO_TYPE_NONE,
1379 if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
1382 if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560) {
1383 rate_n_flags = le32_to_cpu(desc->v3.rate_n_flags);
1384 channel = desc->v3.channel;
1385 gp2_on_air_rise = le32_to_cpu(desc->v3.gp2_on_air_rise);
1386 energy_a = desc->v3.energy_a;
1387 energy_b = desc->v3.energy_b;
1388 desc_size = sizeof(*desc);
1390 phy_data.d0 = desc->v3.phy_data0;
1391 phy_data.d1 = desc->v3.phy_data1;
1392 phy_data.d2 = desc->v3.phy_data2;
1393 phy_data.d3 = desc->v3.phy_data3;
1395 rate_n_flags = le32_to_cpu(desc->v1.rate_n_flags);
1396 channel = desc->v1.channel;
1397 gp2_on_air_rise = le32_to_cpu(desc->v1.gp2_on_air_rise);
1398 energy_a = desc->v1.energy_a;
1399 energy_b = desc->v1.energy_b;
1400 desc_size = IWL_RX_DESC_SIZE_V1;
1402 phy_data.d0 = desc->v1.phy_data0;
1403 phy_data.d1 = desc->v1.phy_data1;
1404 phy_data.d2 = desc->v1.phy_data2;
1405 phy_data.d3 = desc->v1.phy_data3;
1408 if (phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD)
1409 phy_data.info_type =
1410 le32_get_bits(phy_data.d1,
1411 IWL_RX_PHY_DATA1_INFO_TYPE_MASK);
1413 hdr = (void *)(pkt->data + desc_size);
1414 /* Dont use dev_alloc_skb(), we'll have enough headroom once
1415 * ieee80211_hdr pulled.
1417 skb = alloc_skb(128, GFP_ATOMIC);
1419 IWL_ERR(mvm, "alloc_skb failed\n");
1423 if (desc->mac_flags2 & IWL_RX_MPDU_MFLG2_PAD) {
1425 * If the device inserted padding it means that (it thought)
1426 * the 802.11 header wasn't a multiple of 4 bytes long. In
1427 * this case, reserve two bytes at the start of the SKB to
1428 * align the payload properly in case we end up copying it.
1430 skb_reserve(skb, 2);
1433 rx_status = IEEE80211_SKB_RXCB(skb);
1435 /* This may be overridden by iwl_mvm_rx_he() to HE_RU */
1436 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
1437 case RATE_MCS_CHAN_WIDTH_20:
1439 case RATE_MCS_CHAN_WIDTH_40:
1440 rx_status->bw = RATE_INFO_BW_40;
1442 case RATE_MCS_CHAN_WIDTH_80:
1443 rx_status->bw = RATE_INFO_BW_80;
1445 case RATE_MCS_CHAN_WIDTH_160:
1446 rx_status->bw = RATE_INFO_BW_160;
1450 if (rate_n_flags & RATE_MCS_HE_MSK)
1451 iwl_mvm_rx_he(mvm, skb, &phy_data, rate_n_flags,
1454 iwl_mvm_decode_lsig(skb, &phy_data);
1456 rx_status = IEEE80211_SKB_RXCB(skb);
1458 if (iwl_mvm_rx_crypto(mvm, hdr, rx_status, phy_info, desc,
1459 le32_to_cpu(pkt->len_n_flags), queue,
1466 * Keep packets with CRC errors (and with overrun) for monitor mode
1467 * (otherwise the firmware discards them) but mark them as bad.
1469 if (!(desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_CRC_OK)) ||
1470 !(desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_OVERRUN_OK))) {
1471 IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n",
1472 le16_to_cpu(desc->status));
1473 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
1475 /* set the preamble flag if appropriate */
1476 if (rate_n_flags & RATE_MCS_CCK_MSK &&
1477 phy_info & IWL_RX_MPDU_PHY_SHORT_PREAMBLE)
1478 rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
1480 if (likely(!(phy_info & IWL_RX_MPDU_PHY_TSF_OVERLOAD))) {
1481 u64 tsf_on_air_rise;
1483 if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560)
1484 tsf_on_air_rise = le64_to_cpu(desc->v3.tsf_on_air_rise);
1486 tsf_on_air_rise = le64_to_cpu(desc->v1.tsf_on_air_rise);
1488 rx_status->mactime = tsf_on_air_rise;
1489 /* TSF as indicated by the firmware is at INA time */
1490 rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;
1493 rx_status->device_timestamp = gp2_on_air_rise;
1494 rx_status->band = channel > 14 ? NL80211_BAND_5GHZ :
1496 rx_status->freq = ieee80211_channel_to_frequency(channel,
1498 iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags, energy_a,
1501 /* update aggregation data for monitor sake on default queue */
1502 if (!queue && (phy_info & IWL_RX_MPDU_PHY_AMPDU)) {
1503 bool toggle_bit = phy_info & IWL_RX_MPDU_PHY_AMPDU_TOGGLE;
1505 rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
1507 * Toggle is switched whenever new aggregation starts. Make
1508 * sure ampdu_reference is never 0 so we can later use it to
1509 * see if the frame was really part of an A-MPDU or not.
1511 if (toggle_bit != mvm->ampdu_toggle) {
1513 if (mvm->ampdu_ref == 0)
1515 mvm->ampdu_toggle = toggle_bit;
1517 rx_status->ampdu_reference = mvm->ampdu_ref;
1520 if (unlikely(mvm->monitor_on))
1521 iwl_mvm_add_rtap_sniffer_config(mvm, skb);
1525 if (desc->status & cpu_to_le16(IWL_RX_MPDU_STATUS_SRC_STA_FOUND)) {
1526 u8 id = desc->sta_id_flags & IWL_RX_MPDU_SIF_STA_ID_MASK;
1528 if (!WARN_ON_ONCE(id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) {
1529 sta = rcu_dereference(mvm->fw_id_to_mac_id[id]);
1533 } else if (!is_multicast_ether_addr(hdr->addr2)) {
1535 * This is fine since we prevent two stations with the same
1536 * address from being added.
1538 sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
1542 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1543 struct ieee80211_vif *tx_blocked_vif =
1544 rcu_dereference(mvm->csa_tx_blocked_vif);
1545 u8 baid = (u8)((le32_to_cpu(desc->reorder_data) &
1546 IWL_RX_MPDU_REORDER_BAID_MASK) >>
1547 IWL_RX_MPDU_REORDER_BAID_SHIFT);
1548 struct iwl_fw_dbg_trigger_tlv *trig;
1549 struct ieee80211_vif *vif = mvmsta->vif;
1551 if (!mvm->tcm.paused && len >= sizeof(*hdr) &&
1552 !is_multicast_ether_addr(hdr->addr1) &&
1553 ieee80211_is_data(hdr->frame_control) &&
1554 time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
1555 schedule_delayed_work(&mvm->tcm.work, 0);
1558 * We have tx blocked stations (with CS bit). If we heard
1559 * frames from a blocked station on a new channel we can
1562 if (unlikely(tx_blocked_vif) && tx_blocked_vif == vif) {
1563 struct iwl_mvm_vif *mvmvif =
1564 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
1566 if (mvmvif->csa_target_freq == rx_status->freq)
1567 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta,
1571 rs_update_last_rssi(mvm, mvmsta, rx_status);
1573 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt,
1574 ieee80211_vif_to_wdev(vif),
1575 FW_DBG_TRIGGER_RSSI);
1577 if (trig && ieee80211_is_beacon(hdr->frame_control)) {
1578 struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
1581 rssi_trig = (void *)trig->data;
1582 rssi = le32_to_cpu(rssi_trig->rssi);
1584 if (rx_status->signal < rssi)
1585 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
1589 if (ieee80211_is_data(hdr->frame_control))
1590 iwl_mvm_rx_csum(sta, skb, desc);
1592 if (iwl_mvm_is_dup(sta, queue, rx_status, hdr, desc)) {
1598 * Our hardware de-aggregates AMSDUs but copies the mac header
1599 * as it to the de-aggregated MPDUs. We need to turn off the
1600 * AMSDU bit in the QoS control ourselves.
1601 * In addition, HW reverses addr3 and addr4 - reverse it back.
1603 if ((desc->mac_flags2 & IWL_RX_MPDU_MFLG2_AMSDU) &&
1604 !WARN_ON(!ieee80211_is_data_qos(hdr->frame_control))) {
1605 u8 *qc = ieee80211_get_qos_ctl(hdr);
1607 *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
1609 if (mvm->trans->cfg->device_family ==
1610 IWL_DEVICE_FAMILY_9000) {
1611 iwl_mvm_flip_address(hdr->addr3);
1613 if (ieee80211_has_a4(hdr->frame_control))
1614 iwl_mvm_flip_address(hdr->addr4);
1617 if (baid != IWL_RX_REORDER_DATA_INVALID_BAID) {
1618 u32 reorder_data = le32_to_cpu(desc->reorder_data);
1620 iwl_mvm_agg_rx_received(mvm, reorder_data, baid);
1624 if (!(rate_n_flags & RATE_MCS_CCK_MSK) &&
1625 rate_n_flags & RATE_MCS_SGI_MSK)
1626 rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
1627 if (rate_n_flags & RATE_HT_MCS_GF_MSK)
1628 rx_status->enc_flags |= RX_ENC_FLAG_HT_GF;
1629 if (rate_n_flags & RATE_MCS_LDPC_MSK)
1630 rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
1631 if (rate_n_flags & RATE_MCS_HT_MSK) {
1632 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
1634 rx_status->encoding = RX_ENC_HT;
1635 rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK;
1636 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1637 } else if (rate_n_flags & RATE_MCS_VHT_MSK) {
1638 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
1641 ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
1642 RATE_VHT_MCS_NSS_POS) + 1;
1643 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
1644 rx_status->encoding = RX_ENC_VHT;
1645 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1646 if (rate_n_flags & RATE_MCS_BF_MSK)
1647 rx_status->enc_flags |= RX_ENC_FLAG_BF;
1648 } else if (!(rate_n_flags & RATE_MCS_HE_MSK)) {
1649 int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
1652 if (WARN(rate < 0 || rate > 0xFF,
1653 "Invalid rate flags 0x%x, band %d,\n",
1654 rate_n_flags, rx_status->band)) {
1658 rx_status->rate_idx = rate;
1661 /* management stuff on default queue */
1663 if (unlikely((ieee80211_is_beacon(hdr->frame_control) ||
1664 ieee80211_is_probe_resp(hdr->frame_control)) &&
1665 mvm->sched_scan_pass_all ==
1666 SCHED_SCAN_PASS_ALL_ENABLED))
1667 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND;
1669 if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
1670 ieee80211_is_probe_resp(hdr->frame_control)))
1671 rx_status->boottime_ns = ktime_get_boot_ns();
1674 iwl_mvm_create_skb(skb, hdr, len, crypt_len, rxb);
1675 if (!iwl_mvm_reorder(mvm, napi, queue, sta, skb, desc))
1676 iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue,
1682 void iwl_mvm_rx_monitor_ndp(struct iwl_mvm *mvm, struct napi_struct *napi,
1683 struct iwl_rx_cmd_buffer *rxb, int queue)
1685 struct ieee80211_rx_status *rx_status;
1686 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1687 struct iwl_rx_no_data *desc = (void *)pkt->data;
1688 u32 rate_n_flags = le32_to_cpu(desc->rate);
1689 u32 gp2_on_air_rise = le32_to_cpu(desc->on_air_rise_time);
1690 u32 rssi = le32_to_cpu(desc->rssi);
1691 u32 info_type = le32_to_cpu(desc->info) & RX_NO_DATA_INFO_TYPE_MSK;
1692 u16 phy_info = IWL_RX_MPDU_PHY_TSF_OVERLOAD;
1693 struct ieee80211_sta *sta = NULL;
1694 struct sk_buff *skb;
1695 u8 channel, energy_a, energy_b;
1696 struct iwl_mvm_rx_phy_data phy_data = {
1697 .d0 = desc->phy_info[0],
1698 .info_type = IWL_RX_PHY_INFO_TYPE_NONE,
1701 if (unlikely(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
1704 /* Currently only NDP type is supported */
1705 if (info_type != RX_NO_DATA_INFO_TYPE_NDP)
1708 energy_a = (rssi & RX_NO_DATA_CHAIN_A_MSK) >> RX_NO_DATA_CHAIN_A_POS;
1709 energy_b = (rssi & RX_NO_DATA_CHAIN_B_MSK) >> RX_NO_DATA_CHAIN_B_POS;
1710 channel = (rssi & RX_NO_DATA_CHANNEL_MSK) >> RX_NO_DATA_CHANNEL_POS;
1712 phy_data.info_type =
1713 le32_get_bits(desc->phy_info[1],
1714 IWL_RX_PHY_DATA1_INFO_TYPE_MASK);
1716 /* Dont use dev_alloc_skb(), we'll have enough headroom once
1717 * ieee80211_hdr pulled.
1719 skb = alloc_skb(128, GFP_ATOMIC);
1721 IWL_ERR(mvm, "alloc_skb failed\n");
1725 rx_status = IEEE80211_SKB_RXCB(skb);
1728 rx_status->flag |= RX_FLAG_NO_PSDU;
1729 /* currently this is the only type for which we get this notif */
1730 rx_status->zero_length_psdu_type =
1731 IEEE80211_RADIOTAP_ZERO_LEN_PSDU_SOUNDING;
1733 /* This may be overridden by iwl_mvm_rx_he() to HE_RU */
1734 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
1735 case RATE_MCS_CHAN_WIDTH_20:
1737 case RATE_MCS_CHAN_WIDTH_40:
1738 rx_status->bw = RATE_INFO_BW_40;
1740 case RATE_MCS_CHAN_WIDTH_80:
1741 rx_status->bw = RATE_INFO_BW_80;
1743 case RATE_MCS_CHAN_WIDTH_160:
1744 rx_status->bw = RATE_INFO_BW_160;
1748 if (rate_n_flags & RATE_MCS_HE_MSK)
1749 iwl_mvm_rx_he(mvm, skb, &phy_data, rate_n_flags,
1752 iwl_mvm_decode_lsig(skb, &phy_data);
1754 rx_status->device_timestamp = gp2_on_air_rise;
1755 rx_status->band = channel > 14 ? NL80211_BAND_5GHZ :
1757 rx_status->freq = ieee80211_channel_to_frequency(channel,
1759 iwl_mvm_get_signal_strength(mvm, rx_status, rate_n_flags, energy_a,
1764 if (!(rate_n_flags & RATE_MCS_CCK_MSK) &&
1765 rate_n_flags & RATE_MCS_SGI_MSK)
1766 rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
1767 if (rate_n_flags & RATE_HT_MCS_GF_MSK)
1768 rx_status->enc_flags |= RX_ENC_FLAG_HT_GF;
1769 if (rate_n_flags & RATE_MCS_LDPC_MSK)
1770 rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
1771 if (rate_n_flags & RATE_MCS_HT_MSK) {
1772 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
1774 rx_status->encoding = RX_ENC_HT;
1775 rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK;
1776 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1777 } else if (rate_n_flags & RATE_MCS_VHT_MSK) {
1778 u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
1780 rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
1781 rx_status->encoding = RX_ENC_VHT;
1782 rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
1783 if (rate_n_flags & RATE_MCS_BF_MSK)
1784 rx_status->enc_flags |= RX_ENC_FLAG_BF;
1786 * take the nss from the rx_vec since the rate_n_flags has
1787 * only 2 bits for the nss which gives a max of 4 ss but
1788 * there may be up to 8 spatial streams
1791 le32_get_bits(desc->rx_vec[0],
1792 RX_NO_DATA_RX_VEC0_VHT_NSTS_MSK) + 1;
1793 } else if (rate_n_flags & RATE_MCS_HE_MSK) {
1795 le32_get_bits(desc->rx_vec[0],
1796 RX_NO_DATA_RX_VEC0_HE_NSTS_MSK) + 1;
1798 int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
1801 if (WARN(rate < 0 || rate > 0xFF,
1802 "Invalid rate flags 0x%x, band %d,\n",
1803 rate_n_flags, rx_status->band)) {
1807 rx_status->rate_idx = rate;
1810 ieee80211_rx_napi(mvm->hw, sta, skb, napi);
1814 void iwl_mvm_rx_frame_release(struct iwl_mvm *mvm, struct napi_struct *napi,
1815 struct iwl_rx_cmd_buffer *rxb, int queue)
1817 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1818 struct iwl_frame_release *release = (void *)pkt->data;
1819 struct ieee80211_sta *sta;
1820 struct iwl_mvm_reorder_buffer *reorder_buf;
1821 struct iwl_mvm_baid_data *ba_data;
1823 int baid = release->baid;
1825 IWL_DEBUG_HT(mvm, "Frame release notification for BAID %u, NSSN %d\n",
1826 release->baid, le16_to_cpu(release->nssn));
1828 if (WARN_ON_ONCE(baid == IWL_RX_REORDER_DATA_INVALID_BAID))
1833 ba_data = rcu_dereference(mvm->baid_map[baid]);
1834 if (WARN_ON_ONCE(!ba_data))
1837 sta = rcu_dereference(mvm->fw_id_to_mac_id[ba_data->sta_id]);
1838 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))
1841 reorder_buf = &ba_data->reorder_buf[queue];
1843 spin_lock_bh(&reorder_buf->lock);
1844 iwl_mvm_release_frames(mvm, sta, napi, ba_data, reorder_buf,
1845 le16_to_cpu(release->nssn));
1846 spin_unlock_bh(&reorder_buf->lock);