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66#include <linux/ieee80211.h>
67#include <linux/etherdevice.h>
68#include <linux/tcp.h>
69#include <net/ip.h>
70#include <net/ipv6.h>
71
72#include "iwl-trans.h"
73#include "iwl-eeprom-parse.h"
74#include "mvm.h"
75#include "sta.h"
76#include "fw-dbg.h"
77
78static void
79iwl_mvm_bar_check_trigger(struct iwl_mvm *mvm, const u8 *addr,
80 u16 tid, u16 ssn)
81{
82 struct iwl_fw_dbg_trigger_tlv *trig;
83 struct iwl_fw_dbg_trigger_ba *ba_trig;
84
85 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
86 return;
87
88 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
89 ba_trig = (void *)trig->data;
90
91 if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig))
92 return;
93
94 if (!(le16_to_cpu(ba_trig->tx_bar) & BIT(tid)))
95 return;
96
97 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
98 "BAR sent to %pM, tid %d, ssn %d",
99 addr, tid, ssn);
100}
101
102#define OPT_HDR(type, skb, off) \
103 (type *)(skb_network_header(skb) + (off))
104
105static void iwl_mvm_tx_csum(struct iwl_mvm *mvm, struct sk_buff *skb,
106 struct ieee80211_hdr *hdr,
107 struct ieee80211_tx_info *info,
108 struct iwl_tx_cmd *tx_cmd)
109{
110#if IS_ENABLED(CONFIG_INET)
111 u16 mh_len = ieee80211_hdrlen(hdr->frame_control);
112 u16 offload_assist = le16_to_cpu(tx_cmd->offload_assist);
113 u8 protocol = 0;
114
115
116
117
118
119 if (skb->ip_summed != CHECKSUM_PARTIAL || IWL_MVM_SW_TX_CSUM_OFFLOAD)
120 return;
121
122
123 if (WARN_ONCE(!(mvm->hw->netdev_features & IWL_TX_CSUM_NETIF_FLAGS) ||
124 (skb->protocol != htons(ETH_P_IP) &&
125 skb->protocol != htons(ETH_P_IPV6)),
126 "No support for requested checksum\n")) {
127 skb_checksum_help(skb);
128 return;
129 }
130
131 if (skb->protocol == htons(ETH_P_IP)) {
132 protocol = ip_hdr(skb)->protocol;
133 } else {
134#if IS_ENABLED(CONFIG_IPV6)
135 struct ipv6hdr *ipv6h =
136 (struct ipv6hdr *)skb_network_header(skb);
137 unsigned int off = sizeof(*ipv6h);
138
139 protocol = ipv6h->nexthdr;
140 while (protocol != NEXTHDR_NONE && ipv6_ext_hdr(protocol)) {
141 struct ipv6_opt_hdr *hp;
142
143
144 if (protocol != NEXTHDR_ROUTING &&
145 protocol != NEXTHDR_HOP &&
146 protocol != NEXTHDR_DEST) {
147 skb_checksum_help(skb);
148 return;
149 }
150
151 hp = OPT_HDR(struct ipv6_opt_hdr, skb, off);
152 protocol = hp->nexthdr;
153 off += ipv6_optlen(hp);
154 }
155
156#endif
157 }
158
159 if (protocol != IPPROTO_TCP && protocol != IPPROTO_UDP) {
160 WARN_ON_ONCE(1);
161 skb_checksum_help(skb);
162 return;
163 }
164
165
166 offload_assist |= BIT(TX_CMD_OFFLD_L4_EN);
167
168
169
170
171
172
173 offload_assist |= (4 << TX_CMD_OFFLD_IP_HDR);
174
175
176 if (skb->protocol == htons(ETH_P_IP) &&
177 (offload_assist & BIT(TX_CMD_OFFLD_AMSDU))) {
178 ip_hdr(skb)->check = 0;
179 offload_assist |= BIT(TX_CMD_OFFLD_L3_EN);
180 }
181
182
183 if (protocol == IPPROTO_TCP)
184 tcp_hdr(skb)->check = 0;
185 else
186 udp_hdr(skb)->check = 0;
187
188
189 if (info->control.hw_key)
190 mh_len += info->control.hw_key->iv_len;
191 mh_len /= 2;
192 offload_assist |= mh_len << TX_CMD_OFFLD_MH_SIZE;
193
194 tx_cmd->offload_assist = cpu_to_le16(offload_assist);
195#endif
196}
197
198
199
200
201void iwl_mvm_set_tx_cmd(struct iwl_mvm *mvm, struct sk_buff *skb,
202 struct iwl_tx_cmd *tx_cmd,
203 struct ieee80211_tx_info *info, u8 sta_id)
204{
205 struct ieee80211_tx_info *skb_info = IEEE80211_SKB_CB(skb);
206 struct ieee80211_hdr *hdr = (void *)skb->data;
207 __le16 fc = hdr->frame_control;
208 u32 tx_flags = le32_to_cpu(tx_cmd->tx_flags);
209 u32 len = skb->len + FCS_LEN;
210 u8 ac;
211
212 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
213 tx_flags |= TX_CMD_FLG_ACK;
214 else
215 tx_flags &= ~TX_CMD_FLG_ACK;
216
217 if (ieee80211_is_probe_resp(fc))
218 tx_flags |= TX_CMD_FLG_TSF;
219
220 if (ieee80211_has_morefrags(fc))
221 tx_flags |= TX_CMD_FLG_MORE_FRAG;
222
223 if (ieee80211_is_data_qos(fc)) {
224 u8 *qc = ieee80211_get_qos_ctl(hdr);
225 tx_cmd->tid_tspec = qc[0] & 0xf;
226 tx_flags &= ~TX_CMD_FLG_SEQ_CTL;
227 if (*qc & IEEE80211_QOS_CTL_A_MSDU_PRESENT)
228 tx_cmd->offload_assist |=
229 cpu_to_le16(BIT(TX_CMD_OFFLD_AMSDU));
230 } else if (ieee80211_is_back_req(fc)) {
231 struct ieee80211_bar *bar = (void *)skb->data;
232 u16 control = le16_to_cpu(bar->control);
233 u16 ssn = le16_to_cpu(bar->start_seq_num);
234
235 tx_flags |= TX_CMD_FLG_ACK | TX_CMD_FLG_BAR;
236 tx_cmd->tid_tspec = (control &
237 IEEE80211_BAR_CTRL_TID_INFO_MASK) >>
238 IEEE80211_BAR_CTRL_TID_INFO_SHIFT;
239 WARN_ON_ONCE(tx_cmd->tid_tspec >= IWL_MAX_TID_COUNT);
240 iwl_mvm_bar_check_trigger(mvm, bar->ra, tx_cmd->tid_tspec,
241 ssn);
242 } else {
243 tx_cmd->tid_tspec = IWL_TID_NON_QOS;
244 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
245 tx_flags |= TX_CMD_FLG_SEQ_CTL;
246 else
247 tx_flags &= ~TX_CMD_FLG_SEQ_CTL;
248 }
249
250
251 if (tx_cmd->tid_tspec < IWL_MAX_TID_COUNT)
252 ac = tid_to_mac80211_ac[tx_cmd->tid_tspec];
253 else
254 ac = tid_to_mac80211_ac[0];
255
256 tx_flags |= iwl_mvm_bt_coex_tx_prio(mvm, hdr, info, ac) <<
257 TX_CMD_FLG_BT_PRIO_POS;
258
259 if (ieee80211_is_mgmt(fc)) {
260 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
261 tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_ASSOC);
262 else if (ieee80211_is_action(fc))
263 tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_NONE);
264 else
265 tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_MGMT);
266
267
268
269
270 WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_AMPDU);
271 } else if (info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO) {
272 tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_MGMT);
273 } else {
274 tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_NONE);
275 }
276
277 if (ieee80211_is_data(fc) && len > mvm->rts_threshold &&
278 !is_multicast_ether_addr(ieee80211_get_DA(hdr)))
279 tx_flags |= TX_CMD_FLG_PROT_REQUIRE;
280
281 if (fw_has_capa(&mvm->fw->ucode_capa,
282 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT) &&
283 ieee80211_action_contains_tpc(skb))
284 tx_flags |= TX_CMD_FLG_WRITE_TX_POWER;
285
286 tx_cmd->tx_flags = cpu_to_le32(tx_flags);
287
288 tx_cmd->len = cpu_to_le16((u16)skb->len +
289 (uintptr_t)skb_info->driver_data[0]);
290 tx_cmd->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
291 tx_cmd->sta_id = sta_id;
292
293
294 if (ieee80211_hdrlen(fc) % 4 &&
295 !(tx_cmd->offload_assist & cpu_to_le16(BIT(TX_CMD_OFFLD_AMSDU))))
296 tx_cmd->offload_assist |= cpu_to_le16(BIT(TX_CMD_OFFLD_PAD));
297
298 iwl_mvm_tx_csum(mvm, skb, hdr, info, tx_cmd);
299}
300
301
302
303
304void iwl_mvm_set_tx_cmd_rate(struct iwl_mvm *mvm, struct iwl_tx_cmd *tx_cmd,
305 struct ieee80211_tx_info *info,
306 struct ieee80211_sta *sta, __le16 fc)
307{
308 u32 rate_flags;
309 int rate_idx;
310 u8 rate_plcp;
311
312
313 tx_cmd->rts_retry_limit = IWL_RTS_DFAULT_RETRY_LIMIT;
314
315
316 if (ieee80211_is_probe_resp(fc)) {
317 tx_cmd->data_retry_limit = IWL_MGMT_DFAULT_RETRY_LIMIT;
318 tx_cmd->rts_retry_limit =
319 min(tx_cmd->data_retry_limit, tx_cmd->rts_retry_limit);
320 } else if (ieee80211_is_back_req(fc)) {
321 tx_cmd->data_retry_limit = IWL_BAR_DFAULT_RETRY_LIMIT;
322 } else {
323 tx_cmd->data_retry_limit = IWL_DEFAULT_TX_RETRY;
324 }
325
326
327
328
329
330
331 if (ieee80211_is_data(fc) && sta) {
332 tx_cmd->initial_rate_index = 0;
333 tx_cmd->tx_flags |= cpu_to_le32(TX_CMD_FLG_STA_RATE);
334 return;
335 } else if (ieee80211_is_back_req(fc)) {
336 tx_cmd->tx_flags |=
337 cpu_to_le32(TX_CMD_FLG_ACK | TX_CMD_FLG_BAR);
338 }
339
340
341 WARN_ONCE(info->control.rates[0].flags & IEEE80211_TX_RC_MCS,
342 "Got an HT rate (flags:0x%x/mcs:%d) for a non data frame (fc:0x%x)\n",
343 info->control.rates[0].flags,
344 info->control.rates[0].idx,
345 le16_to_cpu(fc));
346
347 rate_idx = info->control.rates[0].idx;
348
349 if (rate_idx < 0 || rate_idx >= IWL_RATE_COUNT_LEGACY)
350 rate_idx = rate_lowest_index(
351 &mvm->nvm_data->bands[info->band], sta);
352
353
354 if (info->band == NL80211_BAND_5GHZ)
355 rate_idx += IWL_FIRST_OFDM_RATE;
356
357
358 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
359
360
361 rate_plcp = iwl_mvm_mac80211_idx_to_hwrate(rate_idx);
362
363 mvm->mgmt_last_antenna_idx =
364 iwl_mvm_next_antenna(mvm, iwl_mvm_get_valid_tx_ant(mvm),
365 mvm->mgmt_last_antenna_idx);
366
367 if (info->band == NL80211_BAND_2GHZ &&
368 !iwl_mvm_bt_coex_is_shared_ant_avail(mvm))
369 rate_flags = mvm->cfg->non_shared_ant << RATE_MCS_ANT_POS;
370 else
371 rate_flags =
372 BIT(mvm->mgmt_last_antenna_idx) << RATE_MCS_ANT_POS;
373
374
375 if ((rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE))
376 rate_flags |= RATE_MCS_CCK_MSK;
377
378
379 tx_cmd->rate_n_flags = cpu_to_le32((u32)rate_plcp | rate_flags);
380}
381
382static inline void iwl_mvm_set_tx_cmd_pn(struct ieee80211_tx_info *info,
383 u8 *crypto_hdr)
384{
385 struct ieee80211_key_conf *keyconf = info->control.hw_key;
386 u64 pn;
387
388 pn = atomic64_inc_return(&keyconf->tx_pn);
389 crypto_hdr[0] = pn;
390 crypto_hdr[2] = 0;
391 crypto_hdr[3] = 0x20 | (keyconf->keyidx << 6);
392 crypto_hdr[1] = pn >> 8;
393 crypto_hdr[4] = pn >> 16;
394 crypto_hdr[5] = pn >> 24;
395 crypto_hdr[6] = pn >> 32;
396 crypto_hdr[7] = pn >> 40;
397}
398
399
400
401
402static void iwl_mvm_set_tx_cmd_crypto(struct iwl_mvm *mvm,
403 struct ieee80211_tx_info *info,
404 struct iwl_tx_cmd *tx_cmd,
405 struct sk_buff *skb_frag,
406 int hdrlen)
407{
408 struct ieee80211_key_conf *keyconf = info->control.hw_key;
409 u8 *crypto_hdr = skb_frag->data + hdrlen;
410 u64 pn;
411
412 switch (keyconf->cipher) {
413 case WLAN_CIPHER_SUITE_CCMP:
414 case WLAN_CIPHER_SUITE_CCMP_256:
415 iwl_mvm_set_tx_cmd_ccmp(info, tx_cmd);
416 iwl_mvm_set_tx_cmd_pn(info, crypto_hdr);
417 break;
418
419 case WLAN_CIPHER_SUITE_TKIP:
420 tx_cmd->sec_ctl = TX_CMD_SEC_TKIP;
421 pn = atomic64_inc_return(&keyconf->tx_pn);
422 ieee80211_tkip_add_iv(crypto_hdr, keyconf, pn);
423 ieee80211_get_tkip_p2k(keyconf, skb_frag, tx_cmd->key);
424 break;
425
426 case WLAN_CIPHER_SUITE_WEP104:
427 tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128;
428
429 case WLAN_CIPHER_SUITE_WEP40:
430 tx_cmd->sec_ctl |= TX_CMD_SEC_WEP |
431 ((keyconf->keyidx << TX_CMD_SEC_WEP_KEY_IDX_POS) &
432 TX_CMD_SEC_WEP_KEY_IDX_MSK);
433
434 memcpy(&tx_cmd->key[3], keyconf->key, keyconf->keylen);
435 break;
436 case WLAN_CIPHER_SUITE_GCMP:
437 case WLAN_CIPHER_SUITE_GCMP_256:
438
439
440
441
442
443
444 tx_cmd->sec_ctl |= TX_CMD_SEC_GCMP | TX_CMD_SEC_KEY_FROM_TABLE;
445 tx_cmd->key[0] = keyconf->hw_key_idx;
446 iwl_mvm_set_tx_cmd_pn(info, crypto_hdr);
447 break;
448 default:
449 tx_cmd->sec_ctl |= TX_CMD_SEC_EXT;
450 }
451}
452
453
454
455
456static struct iwl_device_cmd *
457iwl_mvm_set_tx_params(struct iwl_mvm *mvm, struct sk_buff *skb,
458 struct ieee80211_tx_info *info, int hdrlen,
459 struct ieee80211_sta *sta, u8 sta_id)
460{
461 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
462 struct ieee80211_tx_info *skb_info = IEEE80211_SKB_CB(skb);
463 struct iwl_device_cmd *dev_cmd;
464 struct iwl_tx_cmd *tx_cmd;
465
466 dev_cmd = iwl_trans_alloc_tx_cmd(mvm->trans);
467
468 if (unlikely(!dev_cmd))
469 return NULL;
470
471 memset(dev_cmd, 0, sizeof(*dev_cmd));
472 dev_cmd->hdr.cmd = TX_CMD;
473 tx_cmd = (struct iwl_tx_cmd *)dev_cmd->payload;
474
475 if (info->control.hw_key)
476 iwl_mvm_set_tx_cmd_crypto(mvm, info, tx_cmd, skb, hdrlen);
477
478 iwl_mvm_set_tx_cmd(mvm, skb, tx_cmd, info, sta_id);
479
480 iwl_mvm_set_tx_cmd_rate(mvm, tx_cmd, info, sta, hdr->frame_control);
481
482 memset(&skb_info->status, 0, sizeof(skb_info->status));
483 memset(skb_info->driver_data, 0, sizeof(skb_info->driver_data));
484
485 skb_info->driver_data[1] = dev_cmd;
486
487 return dev_cmd;
488}
489
490static int iwl_mvm_get_ctrl_vif_queue(struct iwl_mvm *mvm,
491 struct ieee80211_tx_info *info, __le16 fc)
492{
493 if (!iwl_mvm_is_dqa_supported(mvm))
494 return info->hw_queue;
495
496 switch (info->control.vif->type) {
497 case NL80211_IFTYPE_AP:
498
499
500
501
502 if (ieee80211_is_probe_resp(fc) || ieee80211_is_auth(fc))
503 return IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
504 if (info->hw_queue == info->control.vif->cab_queue)
505 return info->hw_queue;
506
507 WARN_ON_ONCE(1);
508 return IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
509 case NL80211_IFTYPE_P2P_DEVICE:
510 if (ieee80211_is_mgmt(fc))
511 return IWL_MVM_DQA_P2P_DEVICE_QUEUE;
512 if (info->hw_queue == info->control.vif->cab_queue)
513 return info->hw_queue;
514
515 WARN_ON_ONCE(1);
516 return IWL_MVM_DQA_P2P_DEVICE_QUEUE;
517 default:
518 WARN_ONCE(1, "Not a ctrl vif, no available queue\n");
519 return -1;
520 }
521}
522
523int iwl_mvm_tx_skb_non_sta(struct iwl_mvm *mvm, struct sk_buff *skb)
524{
525 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
526 struct ieee80211_tx_info *skb_info = IEEE80211_SKB_CB(skb);
527 struct ieee80211_tx_info info;
528 struct iwl_device_cmd *dev_cmd;
529 struct iwl_tx_cmd *tx_cmd;
530 u8 sta_id;
531 int hdrlen = ieee80211_hdrlen(hdr->frame_control);
532 int queue;
533
534
535
536
537
538
539 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
540 skb_info->control.vif->type == NL80211_IFTYPE_STATION)
541 IEEE80211_SKB_CB(skb)->hw_queue = mvm->aux_queue;
542
543 memcpy(&info, skb->cb, sizeof(info));
544
545 if (WARN_ON_ONCE(info.flags & IEEE80211_TX_CTL_AMPDU))
546 return -1;
547
548 if (WARN_ON_ONCE(info.flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM &&
549 (!info.control.vif ||
550 info.hw_queue != info.control.vif->cab_queue)))
551 return -1;
552
553
554 skb_info->driver_data[0] = (void *)(uintptr_t)0;
555
556 queue = info.hw_queue;
557
558
559
560
561
562
563
564
565
566
567
568
569
570 sta_id = mvm->aux_sta.sta_id;
571 if (info.control.vif) {
572 struct iwl_mvm_vif *mvmvif =
573 iwl_mvm_vif_from_mac80211(info.control.vif);
574
575 if (info.control.vif->type == NL80211_IFTYPE_P2P_DEVICE ||
576 info.control.vif->type == NL80211_IFTYPE_AP) {
577 sta_id = mvmvif->bcast_sta.sta_id;
578 queue = iwl_mvm_get_ctrl_vif_queue(mvm, &info,
579 hdr->frame_control);
580 if (queue < 0)
581 return -1;
582
583 } else if (info.control.vif->type == NL80211_IFTYPE_STATION &&
584 is_multicast_ether_addr(hdr->addr1)) {
585 u8 ap_sta_id = ACCESS_ONCE(mvmvif->ap_sta_id);
586
587 if (ap_sta_id != IWL_MVM_STATION_COUNT)
588 sta_id = ap_sta_id;
589 } else if (iwl_mvm_is_dqa_supported(mvm) &&
590 info.control.vif->type == NL80211_IFTYPE_STATION) {
591 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE;
592 }
593 }
594
595 IWL_DEBUG_TX(mvm, "station Id %d, queue=%d\n", sta_id, queue);
596
597 dev_cmd = iwl_mvm_set_tx_params(mvm, skb, &info, hdrlen, NULL, sta_id);
598 if (!dev_cmd)
599 return -1;
600
601 tx_cmd = (struct iwl_tx_cmd *)dev_cmd->payload;
602
603
604 memcpy(tx_cmd->hdr, hdr, hdrlen);
605
606 if (iwl_trans_tx(mvm->trans, skb, dev_cmd, queue)) {
607 iwl_trans_free_tx_cmd(mvm->trans, dev_cmd);
608 return -1;
609 }
610
611
612
613
614
615
616
617
618 atomic_inc(&mvm->pending_frames[sta_id]);
619
620 return 0;
621}
622
623#ifdef CONFIG_INET
624static int iwl_mvm_tx_tso(struct iwl_mvm *mvm, struct sk_buff *skb,
625 struct ieee80211_tx_info *info,
626 struct ieee80211_sta *sta,
627 struct sk_buff_head *mpdus_skb)
628{
629 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
630 struct ieee80211_hdr *hdr = (void *)skb->data;
631 unsigned int mss = skb_shinfo(skb)->gso_size;
632 struct sk_buff *tmp, *next;
633 char cb[sizeof(skb->cb)];
634 unsigned int num_subframes, tcp_payload_len, subf_len, max_amsdu_len;
635 bool ipv4 = (skb->protocol == htons(ETH_P_IP));
636 u16 ip_base_id = ipv4 ? ntohs(ip_hdr(skb)->id) : 0;
637 u16 amsdu_add, snap_ip_tcp, pad, i = 0;
638 unsigned int dbg_max_amsdu_len;
639 netdev_features_t netdev_features = NETIF_F_CSUM_MASK | NETIF_F_SG;
640 u8 *qc, tid, txf;
641
642 snap_ip_tcp = 8 + skb_transport_header(skb) - skb_network_header(skb) +
643 tcp_hdrlen(skb);
644
645 qc = ieee80211_get_qos_ctl(hdr);
646 tid = *qc & IEEE80211_QOS_CTL_TID_MASK;
647 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
648 return -EINVAL;
649
650 dbg_max_amsdu_len = ACCESS_ONCE(mvm->max_amsdu_len);
651
652 if (!sta->max_amsdu_len ||
653 !ieee80211_is_data_qos(hdr->frame_control) ||
654 (!mvmsta->tlc_amsdu && !dbg_max_amsdu_len)) {
655 num_subframes = 1;
656 pad = 0;
657 goto segment;
658 }
659
660
661
662
663
664 if (skb->protocol == htons(ETH_P_IPV6) &&
665 ((struct ipv6hdr *)skb_network_header(skb))->nexthdr !=
666 IPPROTO_TCP) {
667 num_subframes = 1;
668 pad = 0;
669 netdev_features &= ~NETIF_F_CSUM_MASK;
670 goto segment;
671 }
672
673
674
675
676
677 if (info->flags & IEEE80211_TX_CTL_AMPDU &&
678 !mvmsta->tid_data[tid].amsdu_in_ampdu_allowed) {
679 num_subframes = 1;
680 pad = 0;
681 goto segment;
682 }
683
684 max_amsdu_len = sta->max_amsdu_len;
685
686
687 txf = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];
688
689
690
691
692
693
694
695 max_amsdu_len = min_t(unsigned int, max_amsdu_len,
696 mvm->shared_mem_cfg.txfifo_size[txf] - 256);
697
698 if (unlikely(dbg_max_amsdu_len))
699 max_amsdu_len = min_t(unsigned int, max_amsdu_len,
700 dbg_max_amsdu_len);
701
702
703
704
705
706
707 if (info->flags & IEEE80211_TX_CTL_AMPDU &&
708 !sta->vht_cap.vht_supported)
709 max_amsdu_len = min_t(unsigned int, max_amsdu_len, 4095);
710
711
712 subf_len = sizeof(struct ethhdr) + snap_ip_tcp + mss;
713 pad = (4 - subf_len) & 0x3;
714
715
716
717
718
719 num_subframes = (max_amsdu_len + pad) / (subf_len + pad);
720 if (num_subframes > 1)
721 *qc |= IEEE80211_QOS_CTL_A_MSDU_PRESENT;
722
723 tcp_payload_len = skb_tail_pointer(skb) - skb_transport_header(skb) -
724 tcp_hdrlen(skb) + skb->data_len;
725
726
727
728
729
730
731
732 num_subframes =
733 min_t(unsigned int, num_subframes,
734 (mvm->trans->max_skb_frags - 1 -
735 skb_shinfo(skb)->nr_frags) / 2);
736
737
738 if (num_subframes * mss >= tcp_payload_len) {
739 struct ieee80211_tx_info *skb_info = IEEE80211_SKB_CB(skb);
740
741
742
743
744
745
746
747
748 num_subframes = DIV_ROUND_UP(tcp_payload_len, mss);
749 amsdu_add = num_subframes * sizeof(struct ethhdr) +
750 (num_subframes - 1) * (snap_ip_tcp + pad);
751
752 skb_info->driver_data[0] = (void *)(uintptr_t)amsdu_add;
753
754 __skb_queue_tail(mpdus_skb, skb);
755 return 0;
756 }
757
758
759
760
761
762segment:
763 skb_shinfo(skb)->gso_size = num_subframes * mss;
764 memcpy(cb, skb->cb, sizeof(cb));
765
766 next = skb_gso_segment(skb, netdev_features);
767 skb_shinfo(skb)->gso_size = mss;
768 if (WARN_ON_ONCE(IS_ERR(next)))
769 return -EINVAL;
770 else if (next)
771 consume_skb(skb);
772
773 while (next) {
774 tmp = next;
775 next = tmp->next;
776
777 memcpy(tmp->cb, cb, sizeof(tmp->cb));
778
779
780
781
782
783
784 tcp_payload_len = skb_tail_pointer(tmp) -
785 skb_transport_header(tmp) -
786 tcp_hdrlen(tmp) + tmp->data_len;
787
788 if (ipv4)
789 ip_hdr(tmp)->id = htons(ip_base_id + i * num_subframes);
790
791 if (tcp_payload_len > mss) {
792 struct ieee80211_tx_info *skb_info =
793 IEEE80211_SKB_CB(tmp);
794
795 num_subframes = DIV_ROUND_UP(tcp_payload_len, mss);
796 amsdu_add = num_subframes * sizeof(struct ethhdr) +
797 (num_subframes - 1) * (snap_ip_tcp + pad);
798 skb_info->driver_data[0] =
799 (void *)(uintptr_t)amsdu_add;
800 skb_shinfo(tmp)->gso_size = mss;
801 } else {
802 qc = ieee80211_get_qos_ctl((void *)tmp->data);
803
804 if (ipv4)
805 ip_send_check(ip_hdr(tmp));
806 *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
807 skb_shinfo(tmp)->gso_size = 0;
808 }
809
810 tmp->prev = NULL;
811 tmp->next = NULL;
812
813 __skb_queue_tail(mpdus_skb, tmp);
814 i++;
815 }
816
817 return 0;
818}
819#else
820static int iwl_mvm_tx_tso(struct iwl_mvm *mvm, struct sk_buff *skb,
821 struct ieee80211_tx_info *info,
822 struct ieee80211_sta *sta,
823 struct sk_buff_head *mpdus_skb)
824{
825
826 WARN_ON(1);
827
828 return -1;
829}
830#endif
831
832static void iwl_mvm_tx_add_stream(struct iwl_mvm *mvm,
833 struct iwl_mvm_sta *mvm_sta, u8 tid,
834 struct sk_buff *skb)
835{
836 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
837 u8 mac_queue = info->hw_queue;
838 struct sk_buff_head *deferred_tx_frames;
839
840 lockdep_assert_held(&mvm_sta->lock);
841
842 mvm_sta->deferred_traffic_tid_map |= BIT(tid);
843 set_bit(mvm_sta->sta_id, mvm->sta_deferred_frames);
844
845 deferred_tx_frames = &mvm_sta->tid_data[tid].deferred_tx_frames;
846
847 skb_queue_tail(deferred_tx_frames, skb);
848
849
850
851
852
853 if (!WARN(skb_queue_len(deferred_tx_frames) != 1,
854 "RATID %d/%d has %d deferred frames\n", mvm_sta->sta_id, tid,
855 skb_queue_len(deferred_tx_frames))) {
856 iwl_mvm_stop_mac_queues(mvm, BIT(mac_queue));
857 schedule_work(&mvm->add_stream_wk);
858 }
859}
860
861
862static bool iwl_mvm_txq_should_update(struct iwl_mvm *mvm, int txq_id)
863{
864 unsigned long queue_tid_bitmap = mvm->queue_info[txq_id].tid_bitmap;
865 unsigned long now = jiffies;
866 int tid;
867
868 for_each_set_bit(tid, &queue_tid_bitmap, IWL_MAX_TID_COUNT + 1) {
869 if (time_before(mvm->queue_info[txq_id].last_frame_time[tid] +
870 IWL_MVM_DQA_QUEUE_TIMEOUT, now))
871 return true;
872 }
873
874 return false;
875}
876
877
878
879
880static int iwl_mvm_tx_mpdu(struct iwl_mvm *mvm, struct sk_buff *skb,
881 struct ieee80211_tx_info *info,
882 struct ieee80211_sta *sta)
883{
884 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
885 struct iwl_mvm_sta *mvmsta;
886 struct iwl_device_cmd *dev_cmd;
887 struct iwl_tx_cmd *tx_cmd;
888 __le16 fc;
889 u16 seq_number = 0;
890 u8 tid = IWL_MAX_TID_COUNT;
891 u8 txq_id = info->hw_queue;
892 bool is_ampdu = false;
893 int hdrlen;
894
895 mvmsta = iwl_mvm_sta_from_mac80211(sta);
896 fc = hdr->frame_control;
897 hdrlen = ieee80211_hdrlen(fc);
898
899 if (WARN_ON_ONCE(!mvmsta))
900 return -1;
901
902 if (WARN_ON_ONCE(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
903 return -1;
904
905 dev_cmd = iwl_mvm_set_tx_params(mvm, skb, info, hdrlen,
906 sta, mvmsta->sta_id);
907 if (!dev_cmd)
908 goto drop;
909
910 tx_cmd = (struct iwl_tx_cmd *)dev_cmd->payload;
911
912
913
914
915
916
917
918 info->flags &= ~IEEE80211_TX_STATUS_EOSP;
919
920 spin_lock(&mvmsta->lock);
921
922 if (ieee80211_is_data_qos(fc) && !ieee80211_is_qos_nullfunc(fc)) {
923 u8 *qc = NULL;
924 qc = ieee80211_get_qos_ctl(hdr);
925 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
926 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
927 goto drop_unlock_sta;
928
929 seq_number = mvmsta->tid_data[tid].seq_number;
930 seq_number &= IEEE80211_SCTL_SEQ;
931 hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
932 hdr->seq_ctrl |= cpu_to_le16(seq_number);
933 is_ampdu = info->flags & IEEE80211_TX_CTL_AMPDU;
934 } else if (iwl_mvm_is_dqa_supported(mvm) &&
935 (ieee80211_is_qos_nullfunc(fc) ||
936 ieee80211_is_nullfunc(fc))) {
937
938
939
940 tid = IWL_MAX_TID_COUNT;
941 }
942
943 if (iwl_mvm_is_dqa_supported(mvm)) {
944 txq_id = mvmsta->tid_data[tid].txq_id;
945
946 if (ieee80211_is_mgmt(fc))
947 tx_cmd->tid_tspec = IWL_TID_NON_QOS;
948 }
949
950
951 memcpy(tx_cmd->hdr, hdr, hdrlen);
952
953 WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM);
954
955 if (sta->tdls && !iwl_mvm_is_dqa_supported(mvm)) {
956
957 u8 tdls_tid = tid == IWL_MAX_TID_COUNT ? 0 : tid;
958
959 txq_id = mvmsta->hw_queue[tid_to_mac80211_ac[tdls_tid]];
960 }
961
962 if (is_ampdu) {
963 if (WARN_ON_ONCE(mvmsta->tid_data[tid].state != IWL_AGG_ON))
964 goto drop_unlock_sta;
965 txq_id = mvmsta->tid_data[tid].txq_id;
966 }
967
968
969 if (unlikely(txq_id == IEEE80211_INVAL_HW_QUEUE ||
970 !mvmsta->tid_data[tid].is_tid_active) &&
971 iwl_mvm_is_dqa_supported(mvm)) {
972
973 if (txq_id == IEEE80211_INVAL_HW_QUEUE) {
974 iwl_mvm_tx_add_stream(mvm, mvmsta, tid, skb);
975
976
977
978
979
980 iwl_trans_free_tx_cmd(mvm->trans, dev_cmd);
981 spin_unlock(&mvmsta->lock);
982 return 0;
983 }
984
985
986 spin_lock(&mvm->queue_info_lock);
987 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY;
988 mvmsta->tid_data[tid].is_tid_active = true;
989 spin_unlock(&mvm->queue_info_lock);
990
991 IWL_DEBUG_TX_QUEUES(mvm, "Re-activating queue %d for TX\n",
992 txq_id);
993 }
994
995 if (iwl_mvm_is_dqa_supported(mvm)) {
996
997 mvm->queue_info[txq_id].last_frame_time[tid] = jiffies;
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009 if (unlikely(mvm->queue_info[txq_id].status ==
1010 IWL_MVM_QUEUE_SHARED &&
1011 iwl_mvm_txq_should_update(mvm, txq_id)))
1012 schedule_work(&mvm->add_stream_wk);
1013 }
1014
1015 IWL_DEBUG_TX(mvm, "TX to [%d|%d] Q:%d - seq: 0x%x\n", mvmsta->sta_id,
1016 tid, txq_id, IEEE80211_SEQ_TO_SN(seq_number));
1017
1018 if (iwl_trans_tx(mvm->trans, skb, dev_cmd, txq_id))
1019 goto drop_unlock_sta;
1020
1021 if (tid < IWL_MAX_TID_COUNT && !ieee80211_has_morefrags(fc))
1022 mvmsta->tid_data[tid].seq_number = seq_number + 0x10;
1023
1024 spin_unlock(&mvmsta->lock);
1025
1026
1027 if (!is_ampdu)
1028 atomic_inc(&mvm->pending_frames[mvmsta->sta_id]);
1029
1030 return 0;
1031
1032drop_unlock_sta:
1033 iwl_trans_free_tx_cmd(mvm->trans, dev_cmd);
1034 spin_unlock(&mvmsta->lock);
1035drop:
1036 return -1;
1037}
1038
1039int iwl_mvm_tx_skb(struct iwl_mvm *mvm, struct sk_buff *skb,
1040 struct ieee80211_sta *sta)
1041{
1042 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1043 struct ieee80211_tx_info *skb_info = IEEE80211_SKB_CB(skb);
1044 struct ieee80211_tx_info info;
1045 struct sk_buff_head mpdus_skbs;
1046 unsigned int payload_len;
1047 int ret;
1048
1049 if (WARN_ON_ONCE(!mvmsta))
1050 return -1;
1051
1052 if (WARN_ON_ONCE(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
1053 return -1;
1054
1055 memcpy(&info, skb->cb, sizeof(info));
1056
1057
1058 skb_info->driver_data[0] = (void *)(uintptr_t)0;
1059
1060 if (!skb_is_gso(skb))
1061 return iwl_mvm_tx_mpdu(mvm, skb, &info, sta);
1062
1063 payload_len = skb_tail_pointer(skb) - skb_transport_header(skb) -
1064 tcp_hdrlen(skb) + skb->data_len;
1065
1066 if (payload_len <= skb_shinfo(skb)->gso_size)
1067 return iwl_mvm_tx_mpdu(mvm, skb, &info, sta);
1068
1069 __skb_queue_head_init(&mpdus_skbs);
1070
1071 ret = iwl_mvm_tx_tso(mvm, skb, &info, sta, &mpdus_skbs);
1072 if (ret)
1073 return ret;
1074
1075 if (WARN_ON(skb_queue_empty(&mpdus_skbs)))
1076 return ret;
1077
1078 while (!skb_queue_empty(&mpdus_skbs)) {
1079 skb = __skb_dequeue(&mpdus_skbs);
1080
1081 ret = iwl_mvm_tx_mpdu(mvm, skb, &info, sta);
1082 if (ret) {
1083 __skb_queue_purge(&mpdus_skbs);
1084 return ret;
1085 }
1086 }
1087
1088 return 0;
1089}
1090
1091static void iwl_mvm_check_ratid_empty(struct iwl_mvm *mvm,
1092 struct ieee80211_sta *sta, u8 tid)
1093{
1094 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1095 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1096 struct ieee80211_vif *vif = mvmsta->vif;
1097
1098 lockdep_assert_held(&mvmsta->lock);
1099
1100 if ((tid_data->state == IWL_AGG_ON ||
1101 tid_data->state == IWL_EMPTYING_HW_QUEUE_DELBA) &&
1102 iwl_mvm_tid_queued(tid_data) == 0) {
1103
1104
1105
1106
1107
1108 ieee80211_sta_set_buffered(sta, tid, false);
1109 }
1110
1111 if (tid_data->ssn != tid_data->next_reclaimed)
1112 return;
1113
1114 switch (tid_data->state) {
1115 case IWL_EMPTYING_HW_QUEUE_ADDBA:
1116 IWL_DEBUG_TX_QUEUES(mvm,
1117 "Can continue addBA flow ssn = next_recl = %d\n",
1118 tid_data->next_reclaimed);
1119 tid_data->state = IWL_AGG_STARTING;
1120 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1121 break;
1122
1123 case IWL_EMPTYING_HW_QUEUE_DELBA:
1124 IWL_DEBUG_TX_QUEUES(mvm,
1125 "Can continue DELBA flow ssn = next_recl = %d\n",
1126 tid_data->next_reclaimed);
1127 if (!iwl_mvm_is_dqa_supported(mvm)) {
1128 u8 mac80211_ac = tid_to_mac80211_ac[tid];
1129
1130 iwl_mvm_disable_txq(mvm, tid_data->txq_id,
1131 vif->hw_queue[mac80211_ac], tid,
1132 CMD_ASYNC);
1133 }
1134 tid_data->state = IWL_AGG_OFF;
1135 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1136 break;
1137
1138 default:
1139 break;
1140 }
1141}
1142
1143#ifdef CONFIG_IWLWIFI_DEBUG
1144const char *iwl_mvm_get_tx_fail_reason(u32 status)
1145{
1146#define TX_STATUS_FAIL(x) case TX_STATUS_FAIL_ ## x: return #x
1147#define TX_STATUS_POSTPONE(x) case TX_STATUS_POSTPONE_ ## x: return #x
1148
1149 switch (status & TX_STATUS_MSK) {
1150 case TX_STATUS_SUCCESS:
1151 return "SUCCESS";
1152 TX_STATUS_POSTPONE(DELAY);
1153 TX_STATUS_POSTPONE(FEW_BYTES);
1154 TX_STATUS_POSTPONE(BT_PRIO);
1155 TX_STATUS_POSTPONE(QUIET_PERIOD);
1156 TX_STATUS_POSTPONE(CALC_TTAK);
1157 TX_STATUS_FAIL(INTERNAL_CROSSED_RETRY);
1158 TX_STATUS_FAIL(SHORT_LIMIT);
1159 TX_STATUS_FAIL(LONG_LIMIT);
1160 TX_STATUS_FAIL(UNDERRUN);
1161 TX_STATUS_FAIL(DRAIN_FLOW);
1162 TX_STATUS_FAIL(RFKILL_FLUSH);
1163 TX_STATUS_FAIL(LIFE_EXPIRE);
1164 TX_STATUS_FAIL(DEST_PS);
1165 TX_STATUS_FAIL(HOST_ABORTED);
1166 TX_STATUS_FAIL(BT_RETRY);
1167 TX_STATUS_FAIL(STA_INVALID);
1168 TX_STATUS_FAIL(FRAG_DROPPED);
1169 TX_STATUS_FAIL(TID_DISABLE);
1170 TX_STATUS_FAIL(FIFO_FLUSHED);
1171 TX_STATUS_FAIL(SMALL_CF_POLL);
1172 TX_STATUS_FAIL(FW_DROP);
1173 TX_STATUS_FAIL(STA_COLOR_MISMATCH);
1174 }
1175
1176 return "UNKNOWN";
1177
1178#undef TX_STATUS_FAIL
1179#undef TX_STATUS_POSTPONE
1180}
1181#endif
1182
1183void iwl_mvm_hwrate_to_tx_rate(u32 rate_n_flags,
1184 enum nl80211_band band,
1185 struct ieee80211_tx_rate *r)
1186{
1187 if (rate_n_flags & RATE_HT_MCS_GF_MSK)
1188 r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
1189 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
1190 case RATE_MCS_CHAN_WIDTH_20:
1191 break;
1192 case RATE_MCS_CHAN_WIDTH_40:
1193 r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
1194 break;
1195 case RATE_MCS_CHAN_WIDTH_80:
1196 r->flags |= IEEE80211_TX_RC_80_MHZ_WIDTH;
1197 break;
1198 case RATE_MCS_CHAN_WIDTH_160:
1199 r->flags |= IEEE80211_TX_RC_160_MHZ_WIDTH;
1200 break;
1201 }
1202 if (rate_n_flags & RATE_MCS_SGI_MSK)
1203 r->flags |= IEEE80211_TX_RC_SHORT_GI;
1204 if (rate_n_flags & RATE_MCS_HT_MSK) {
1205 r->flags |= IEEE80211_TX_RC_MCS;
1206 r->idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK;
1207 } else if (rate_n_flags & RATE_MCS_VHT_MSK) {
1208 ieee80211_rate_set_vht(
1209 r, rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK,
1210 ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
1211 RATE_VHT_MCS_NSS_POS) + 1);
1212 r->flags |= IEEE80211_TX_RC_VHT_MCS;
1213 } else {
1214 r->idx = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
1215 band);
1216 }
1217}
1218
1219
1220
1221
1222static void iwl_mvm_hwrate_to_tx_status(u32 rate_n_flags,
1223 struct ieee80211_tx_info *info)
1224{
1225 struct ieee80211_tx_rate *r = &info->status.rates[0];
1226
1227 info->status.antenna =
1228 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
1229 iwl_mvm_hwrate_to_tx_rate(rate_n_flags, info->band, r);
1230}
1231
1232static void iwl_mvm_tx_status_check_trigger(struct iwl_mvm *mvm,
1233 u32 status)
1234{
1235 struct iwl_fw_dbg_trigger_tlv *trig;
1236 struct iwl_fw_dbg_trigger_tx_status *status_trig;
1237 int i;
1238
1239 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TX_STATUS))
1240 return;
1241
1242 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TX_STATUS);
1243 status_trig = (void *)trig->data;
1244
1245 if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig))
1246 return;
1247
1248 for (i = 0; i < ARRAY_SIZE(status_trig->statuses); i++) {
1249
1250 if (!status_trig->statuses[i].status)
1251 break;
1252
1253 if (status_trig->statuses[i].status != (status & TX_STATUS_MSK))
1254 continue;
1255
1256 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
1257 "Tx status %d was received",
1258 status & TX_STATUS_MSK);
1259 break;
1260 }
1261}
1262
1263static void iwl_mvm_rx_tx_cmd_single(struct iwl_mvm *mvm,
1264 struct iwl_rx_packet *pkt)
1265{
1266 struct ieee80211_sta *sta;
1267 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
1268 int txq_id = SEQ_TO_QUEUE(sequence);
1269 struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data;
1270 int sta_id = IWL_MVM_TX_RES_GET_RA(tx_resp->ra_tid);
1271 int tid = IWL_MVM_TX_RES_GET_TID(tx_resp->ra_tid);
1272 u32 status = le16_to_cpu(tx_resp->status.status);
1273 u16 ssn = iwl_mvm_get_scd_ssn(tx_resp);
1274 struct iwl_mvm_sta *mvmsta;
1275 struct sk_buff_head skbs;
1276 u8 skb_freed = 0;
1277 u16 next_reclaimed, seq_ctl;
1278 bool is_ndp = false;
1279 bool txq_agg = false;
1280
1281 __skb_queue_head_init(&skbs);
1282
1283 seq_ctl = le16_to_cpu(tx_resp->seq_ctl);
1284
1285
1286 iwl_trans_reclaim(mvm->trans, txq_id, ssn, &skbs);
1287
1288 while (!skb_queue_empty(&skbs)) {
1289 struct sk_buff *skb = __skb_dequeue(&skbs);
1290 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1291
1292 skb_freed++;
1293
1294 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1295
1296 memset(&info->status, 0, sizeof(info->status));
1297
1298 info->flags &= ~IEEE80211_TX_CTL_AMPDU;
1299
1300
1301 switch (status & TX_STATUS_MSK) {
1302 case TX_STATUS_SUCCESS:
1303 case TX_STATUS_DIRECT_DONE:
1304 info->flags |= IEEE80211_TX_STAT_ACK;
1305 break;
1306 case TX_STATUS_FAIL_DEST_PS:
1307 info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
1308 break;
1309 default:
1310 break;
1311 }
1312
1313 iwl_mvm_tx_status_check_trigger(mvm, status);
1314
1315 info->status.rates[0].count = tx_resp->failure_frame + 1;
1316 iwl_mvm_hwrate_to_tx_status(le32_to_cpu(tx_resp->initial_rate),
1317 info);
1318 info->status.status_driver_data[1] =
1319 (void *)(uintptr_t)le32_to_cpu(tx_resp->initial_rate);
1320
1321
1322 if (txq_id >= mvm->first_agg_queue &&
1323 !(info->flags & IEEE80211_TX_STAT_ACK) &&
1324 !(info->flags & IEEE80211_TX_STAT_TX_FILTERED))
1325 info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
1326
1327
1328 if (status != TX_STATUS_SUCCESS) {
1329 struct ieee80211_hdr *hdr = (void *)skb->data;
1330 seq_ctl = le16_to_cpu(hdr->seq_ctrl);
1331 }
1332
1333 if (unlikely(!seq_ctl)) {
1334 struct ieee80211_hdr *hdr = (void *)skb->data;
1335
1336
1337
1338
1339
1340
1341
1342
1343 if (ieee80211_is_qos_nullfunc(hdr->frame_control))
1344 is_ndp = true;
1345 }
1346
1347
1348
1349
1350
1351 info->status.tx_time =
1352 le16_to_cpu(tx_resp->wireless_media_time);
1353 BUILD_BUG_ON(ARRAY_SIZE(info->status.status_driver_data) < 1);
1354 info->status.status_driver_data[0] =
1355 (void *)(uintptr_t)tx_resp->reduced_tpc;
1356
1357 ieee80211_tx_status(mvm->hw, skb);
1358 }
1359
1360 if (txq_id >= mvm->first_agg_queue) {
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375 next_reclaimed = ssn;
1376 } else {
1377
1378 next_reclaimed = IEEE80211_SEQ_TO_SN(seq_ctl + 0x10);
1379 }
1380
1381 IWL_DEBUG_TX_REPLY(mvm,
1382 "TXQ %d status %s (0x%08x)\n",
1383 txq_id, iwl_mvm_get_tx_fail_reason(status), status);
1384
1385 IWL_DEBUG_TX_REPLY(mvm,
1386 "\t\t\t\tinitial_rate 0x%x retries %d, idx=%d ssn=%d next_reclaimed=0x%x seq_ctl=0x%x\n",
1387 le32_to_cpu(tx_resp->initial_rate),
1388 tx_resp->failure_frame, SEQ_TO_INDEX(sequence),
1389 ssn, next_reclaimed, seq_ctl);
1390
1391 rcu_read_lock();
1392
1393 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1394
1395
1396
1397
1398 if (WARN_ON_ONCE(!sta))
1399 goto out;
1400
1401 if (!IS_ERR(sta)) {
1402 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1403
1404 if (tid != IWL_TID_NON_QOS) {
1405 struct iwl_mvm_tid_data *tid_data =
1406 &mvmsta->tid_data[tid];
1407 bool send_eosp_ndp = false;
1408
1409 spin_lock_bh(&mvmsta->lock);
1410 if (iwl_mvm_is_dqa_supported(mvm)) {
1411 enum iwl_mvm_agg_state state;
1412
1413 state = mvmsta->tid_data[tid].state;
1414 txq_agg = (state == IWL_AGG_ON ||
1415 state == IWL_EMPTYING_HW_QUEUE_DELBA);
1416 } else {
1417 txq_agg = txq_id >= mvm->first_agg_queue;
1418 }
1419
1420 if (!is_ndp) {
1421 tid_data->next_reclaimed = next_reclaimed;
1422 IWL_DEBUG_TX_REPLY(mvm,
1423 "Next reclaimed packet:%d\n",
1424 next_reclaimed);
1425 } else {
1426 IWL_DEBUG_TX_REPLY(mvm,
1427 "NDP - don't update next_reclaimed\n");
1428 }
1429
1430 iwl_mvm_check_ratid_empty(mvm, sta, tid);
1431
1432 if (mvmsta->sleep_tx_count) {
1433 mvmsta->sleep_tx_count--;
1434 if (mvmsta->sleep_tx_count &&
1435 !iwl_mvm_tid_queued(tid_data)) {
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449 send_eosp_ndp = true;
1450 }
1451 }
1452
1453 spin_unlock_bh(&mvmsta->lock);
1454 if (send_eosp_ndp) {
1455 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta,
1456 IEEE80211_FRAME_RELEASE_UAPSD,
1457 1, tid, false, false);
1458 mvmsta->sleep_tx_count = 0;
1459 ieee80211_send_eosp_nullfunc(sta, tid);
1460 }
1461 }
1462
1463 if (mvmsta->next_status_eosp) {
1464 mvmsta->next_status_eosp = false;
1465 ieee80211_sta_eosp(sta);
1466 }
1467 } else {
1468 mvmsta = NULL;
1469 }
1470
1471
1472
1473
1474
1475 if (txq_agg)
1476 goto out;
1477
1478
1479 WARN_ON(!iwl_mvm_is_dqa_supported(mvm) && (skb_freed > 1));
1480
1481
1482 if (!atomic_sub_and_test(skb_freed, &mvm->pending_frames[sta_id]))
1483 goto out;
1484
1485 if (mvmsta && mvmsta->vif->type == NL80211_IFTYPE_AP) {
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495 spin_lock_bh(&mvmsta->lock);
1496
1497 if (!mvmsta->disable_tx)
1498 ieee80211_sta_block_awake(mvm->hw, sta, false);
1499
1500 spin_unlock_bh(&mvmsta->lock);
1501 }
1502
1503 if (PTR_ERR(sta) == -EBUSY || PTR_ERR(sta) == -ENOENT) {
1504
1505
1506
1507
1508
1509
1510 set_bit(sta_id, mvm->sta_drained);
1511 schedule_work(&mvm->sta_drained_wk);
1512 }
1513
1514out:
1515 rcu_read_unlock();
1516}
1517
1518#ifdef CONFIG_IWLWIFI_DEBUG
1519#define AGG_TX_STATE_(x) case AGG_TX_STATE_ ## x: return #x
1520static const char *iwl_get_agg_tx_status(u16 status)
1521{
1522 switch (status & AGG_TX_STATE_STATUS_MSK) {
1523 AGG_TX_STATE_(TRANSMITTED);
1524 AGG_TX_STATE_(UNDERRUN);
1525 AGG_TX_STATE_(BT_PRIO);
1526 AGG_TX_STATE_(FEW_BYTES);
1527 AGG_TX_STATE_(ABORT);
1528 AGG_TX_STATE_(LAST_SENT_TTL);
1529 AGG_TX_STATE_(LAST_SENT_TRY_CNT);
1530 AGG_TX_STATE_(LAST_SENT_BT_KILL);
1531 AGG_TX_STATE_(SCD_QUERY);
1532 AGG_TX_STATE_(TEST_BAD_CRC32);
1533 AGG_TX_STATE_(RESPONSE);
1534 AGG_TX_STATE_(DUMP_TX);
1535 AGG_TX_STATE_(DELAY_TX);
1536 }
1537
1538 return "UNKNOWN";
1539}
1540
1541static void iwl_mvm_rx_tx_cmd_agg_dbg(struct iwl_mvm *mvm,
1542 struct iwl_rx_packet *pkt)
1543{
1544 struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data;
1545 struct agg_tx_status *frame_status = &tx_resp->status;
1546 int i;
1547
1548 for (i = 0; i < tx_resp->frame_count; i++) {
1549 u16 fstatus = le16_to_cpu(frame_status[i].status);
1550
1551 IWL_DEBUG_TX_REPLY(mvm,
1552 "status %s (0x%04x), try-count (%d) seq (0x%x)\n",
1553 iwl_get_agg_tx_status(fstatus),
1554 fstatus & AGG_TX_STATE_STATUS_MSK,
1555 (fstatus & AGG_TX_STATE_TRY_CNT_MSK) >>
1556 AGG_TX_STATE_TRY_CNT_POS,
1557 le16_to_cpu(frame_status[i].sequence));
1558 }
1559}
1560#else
1561static void iwl_mvm_rx_tx_cmd_agg_dbg(struct iwl_mvm *mvm,
1562 struct iwl_rx_packet *pkt)
1563{}
1564#endif
1565
1566static void iwl_mvm_rx_tx_cmd_agg(struct iwl_mvm *mvm,
1567 struct iwl_rx_packet *pkt)
1568{
1569 struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data;
1570 int sta_id = IWL_MVM_TX_RES_GET_RA(tx_resp->ra_tid);
1571 int tid = IWL_MVM_TX_RES_GET_TID(tx_resp->ra_tid);
1572 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
1573 struct iwl_mvm_sta *mvmsta;
1574 int queue = SEQ_TO_QUEUE(sequence);
1575
1576 if (WARN_ON_ONCE(queue < mvm->first_agg_queue &&
1577 (!iwl_mvm_is_dqa_supported(mvm) ||
1578 (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE))))
1579 return;
1580
1581 if (WARN_ON_ONCE(tid == IWL_TID_NON_QOS))
1582 return;
1583
1584 iwl_mvm_rx_tx_cmd_agg_dbg(mvm, pkt);
1585
1586 rcu_read_lock();
1587
1588 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, sta_id);
1589
1590 if (!WARN_ON_ONCE(!mvmsta)) {
1591 mvmsta->tid_data[tid].rate_n_flags =
1592 le32_to_cpu(tx_resp->initial_rate);
1593 mvmsta->tid_data[tid].tx_time =
1594 le16_to_cpu(tx_resp->wireless_media_time);
1595 }
1596
1597 rcu_read_unlock();
1598}
1599
1600void iwl_mvm_rx_tx_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
1601{
1602 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1603 struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data;
1604
1605 if (tx_resp->frame_count == 1)
1606 iwl_mvm_rx_tx_cmd_single(mvm, pkt);
1607 else
1608 iwl_mvm_rx_tx_cmd_agg(mvm, pkt);
1609}
1610
1611static void iwl_mvm_tx_reclaim(struct iwl_mvm *mvm, int sta_id, int tid,
1612 int txq, int index,
1613 struct ieee80211_tx_info *ba_info, u32 rate)
1614{
1615 struct sk_buff_head reclaimed_skbs;
1616 struct iwl_mvm_tid_data *tid_data;
1617 struct ieee80211_sta *sta;
1618 struct iwl_mvm_sta *mvmsta;
1619 struct sk_buff *skb;
1620 int freed;
1621
1622 if (WARN_ONCE(sta_id >= IWL_MVM_STATION_COUNT ||
1623 tid >= IWL_MAX_TID_COUNT,
1624 "sta_id %d tid %d", sta_id, tid))
1625 return;
1626
1627 rcu_read_lock();
1628
1629 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1630
1631
1632 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {
1633 rcu_read_unlock();
1634 return;
1635 }
1636
1637 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1638 tid_data = &mvmsta->tid_data[tid];
1639
1640 if (tid_data->txq_id != txq) {
1641 IWL_ERR(mvm,
1642 "invalid BA notification: Q %d, tid %d\n",
1643 tid_data->txq_id, tid);
1644 rcu_read_unlock();
1645 return;
1646 }
1647
1648 spin_lock_bh(&mvmsta->lock);
1649
1650 __skb_queue_head_init(&reclaimed_skbs);
1651
1652
1653
1654
1655
1656
1657 iwl_trans_reclaim(mvm->trans, txq, index, &reclaimed_skbs);
1658
1659 tid_data->next_reclaimed = index;
1660
1661 iwl_mvm_check_ratid_empty(mvm, sta, tid);
1662
1663 freed = 0;
1664 ba_info->status.status_driver_data[1] = (void *)(uintptr_t)rate;
1665
1666 skb_queue_walk(&reclaimed_skbs, skb) {
1667 struct ieee80211_hdr *hdr = (void *)skb->data;
1668 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1669
1670 if (ieee80211_is_data_qos(hdr->frame_control))
1671 freed++;
1672 else
1673 WARN_ON_ONCE(1);
1674
1675 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1676
1677 memset(&info->status, 0, sizeof(info->status));
1678
1679
1680
1681
1682 info->flags |= IEEE80211_TX_STAT_ACK;
1683
1684
1685
1686 if (freed == 1) {
1687 info->flags |= IEEE80211_TX_STAT_AMPDU;
1688 memcpy(&info->status, &ba_info->status,
1689 sizeof(ba_info->status));
1690 iwl_mvm_hwrate_to_tx_status(rate, info);
1691 }
1692 }
1693
1694 spin_unlock_bh(&mvmsta->lock);
1695
1696
1697
1698
1699
1700 if (skb_queue_empty(&reclaimed_skbs)) {
1701 struct ieee80211_chanctx_conf *chanctx_conf = NULL;
1702
1703 if (mvmsta->vif)
1704 chanctx_conf =
1705 rcu_dereference(mvmsta->vif->chanctx_conf);
1706
1707 if (WARN_ON_ONCE(!chanctx_conf))
1708 goto out;
1709
1710 ba_info->band = chanctx_conf->def.chan->band;
1711 iwl_mvm_hwrate_to_tx_status(rate, ba_info);
1712
1713 IWL_DEBUG_TX_REPLY(mvm, "No reclaim. Update rs directly\n");
1714 iwl_mvm_rs_tx_status(mvm, sta, tid, ba_info, false);
1715 }
1716
1717out:
1718 rcu_read_unlock();
1719
1720 while (!skb_queue_empty(&reclaimed_skbs)) {
1721 skb = __skb_dequeue(&reclaimed_skbs);
1722 ieee80211_tx_status(mvm->hw, skb);
1723 }
1724}
1725
1726void iwl_mvm_rx_ba_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
1727{
1728 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1729 int sta_id, tid, txq, index;
1730 struct ieee80211_tx_info ba_info = {};
1731 struct iwl_mvm_ba_notif *ba_notif;
1732 struct iwl_mvm_tid_data *tid_data;
1733 struct iwl_mvm_sta *mvmsta;
1734
1735 if (iwl_mvm_has_new_tx_api(mvm)) {
1736 struct iwl_mvm_compressed_ba_notif *ba_res =
1737 (void *)pkt->data;
1738
1739 sta_id = ba_res->sta_id;
1740 ba_info.status.ampdu_ack_len = (u8)le16_to_cpu(ba_res->done);
1741 ba_info.status.ampdu_len = (u8)le16_to_cpu(ba_res->txed);
1742 ba_info.status.tx_time =
1743 (u16)le32_to_cpu(ba_res->wireless_time);
1744 ba_info.status.status_driver_data[0] =
1745 (void *)(uintptr_t)ba_res->reduced_txp;
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755 WARN_ON(le16_to_cpu(ba_res->tfd_cnt) != 1);
1756 iwl_mvm_tx_reclaim(mvm, sta_id, ba_res->ra_tid[0].tid,
1757 (int)ba_res->tfd[0].q_num,
1758 le16_to_cpu(ba_res->tfd[0].tfd_index),
1759 &ba_info, le32_to_cpu(ba_res->tx_rate));
1760
1761 IWL_DEBUG_TX_REPLY(mvm,
1762 "BA_NOTIFICATION Received from sta_id = %d, flags %x, sent:%d, acked:%d\n",
1763 sta_id, le32_to_cpu(ba_res->flags),
1764 le16_to_cpu(ba_res->txed),
1765 le16_to_cpu(ba_res->done));
1766 return;
1767 }
1768
1769 ba_notif = (void *)pkt->data;
1770 sta_id = ba_notif->sta_id;
1771 tid = ba_notif->tid;
1772
1773 txq = le16_to_cpu(ba_notif->scd_flow);
1774
1775
1776 index = le16_to_cpu(ba_notif->scd_ssn);
1777
1778 rcu_read_lock();
1779 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, sta_id);
1780 if (WARN_ON_ONCE(!mvmsta)) {
1781 rcu_read_unlock();
1782 return;
1783 }
1784
1785 tid_data = &mvmsta->tid_data[tid];
1786
1787 ba_info.status.ampdu_ack_len = ba_notif->txed_2_done;
1788 ba_info.status.ampdu_len = ba_notif->txed;
1789 ba_info.status.tx_time = tid_data->tx_time;
1790 ba_info.status.status_driver_data[0] =
1791 (void *)(uintptr_t)ba_notif->reduced_txp;
1792
1793 rcu_read_unlock();
1794
1795 iwl_mvm_tx_reclaim(mvm, sta_id, tid, txq, index, &ba_info,
1796 tid_data->rate_n_flags);
1797
1798 IWL_DEBUG_TX_REPLY(mvm,
1799 "BA_NOTIFICATION Received from %pM, sta_id = %d\n",
1800 (u8 *)&ba_notif->sta_addr_lo32, ba_notif->sta_id);
1801
1802 IWL_DEBUG_TX_REPLY(mvm,
1803 "TID = %d, SeqCtl = %d, bitmap = 0x%llx, scd_flow = %d, scd_ssn = %d sent:%d, acked:%d\n",
1804 ba_notif->tid, le16_to_cpu(ba_notif->seq_ctl),
1805 le64_to_cpu(ba_notif->bitmap), txq, index,
1806 ba_notif->txed, ba_notif->txed_2_done);
1807
1808 IWL_DEBUG_TX_REPLY(mvm, "reduced txp from ba notif %d\n",
1809 ba_notif->reduced_txp);
1810}
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820int iwl_mvm_flush_tx_path(struct iwl_mvm *mvm, u32 tfd_msk, u32 flags)
1821{
1822 int ret;
1823 struct iwl_tx_path_flush_cmd flush_cmd = {
1824 .queues_ctl = cpu_to_le32(tfd_msk),
1825 .flush_ctl = cpu_to_le16(DUMP_TX_FIFO_FLUSH),
1826 };
1827
1828 ret = iwl_mvm_send_cmd_pdu(mvm, TXPATH_FLUSH, flags,
1829 sizeof(flush_cmd), &flush_cmd);
1830 if (ret)
1831 IWL_ERR(mvm, "Failed to send flush command (%d)\n", ret);
1832 return ret;
1833}
1834