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Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/tx.c')
-rw-r--r--drivers/net/wireless/iwlwifi/mvm/tx.c1115
1 files changed, 0 insertions, 1115 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/tx.c b/drivers/net/wireless/iwlwifi/mvm/tx.c
deleted file mode 100644
index c652a66be803..000000000000
--- a/drivers/net/wireless/iwlwifi/mvm/tx.c
+++ /dev/null
@@ -1,1115 +0,0 @@
1/******************************************************************************
2 *
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.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
23 * USA
24 *
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
27 *
28 * Contact Information:
29 * Intel Linux Wireless <ilw@linux.intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31 *
32 * BSD LICENSE
33 *
34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
36 * All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 *
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
47 * distribution.
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
63 *
64 *****************************************************************************/
65#include <linux/ieee80211.h>
66#include <linux/etherdevice.h>
67
68#include "iwl-trans.h"
69#include "iwl-eeprom-parse.h"
70#include "mvm.h"
71#include "sta.h"
72
73static void
74iwl_mvm_bar_check_trigger(struct iwl_mvm *mvm, const u8 *addr,
75 u16 tid, u16 ssn)
76{
77 struct iwl_fw_dbg_trigger_tlv *trig;
78 struct iwl_fw_dbg_trigger_ba *ba_trig;
79
80 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
81 return;
82
83 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
84 ba_trig = (void *)trig->data;
85
86 if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig))
87 return;
88
89 if (!(le16_to_cpu(ba_trig->tx_bar) & BIT(tid)))
90 return;
91
92 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
93 "BAR sent to %pM, tid %d, ssn %d",
94 addr, tid, ssn);
95}
96
97/*
98 * Sets most of the Tx cmd's fields
99 */
100void iwl_mvm_set_tx_cmd(struct iwl_mvm *mvm, struct sk_buff *skb,
101 struct iwl_tx_cmd *tx_cmd,
102 struct ieee80211_tx_info *info, u8 sta_id)
103{
104 struct ieee80211_hdr *hdr = (void *)skb->data;
105 __le16 fc = hdr->frame_control;
106 u32 tx_flags = le32_to_cpu(tx_cmd->tx_flags);
107 u32 len = skb->len + FCS_LEN;
108 u8 ac;
109
110 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK))
111 tx_flags |= TX_CMD_FLG_ACK;
112 else
113 tx_flags &= ~TX_CMD_FLG_ACK;
114
115 if (ieee80211_is_probe_resp(fc))
116 tx_flags |= TX_CMD_FLG_TSF;
117
118 if (ieee80211_has_morefrags(fc))
119 tx_flags |= TX_CMD_FLG_MORE_FRAG;
120
121 if (ieee80211_is_data_qos(fc)) {
122 u8 *qc = ieee80211_get_qos_ctl(hdr);
123 tx_cmd->tid_tspec = qc[0] & 0xf;
124 tx_flags &= ~TX_CMD_FLG_SEQ_CTL;
125 } else if (ieee80211_is_back_req(fc)) {
126 struct ieee80211_bar *bar = (void *)skb->data;
127 u16 control = le16_to_cpu(bar->control);
128 u16 ssn = le16_to_cpu(bar->start_seq_num);
129
130 tx_flags |= TX_CMD_FLG_ACK | TX_CMD_FLG_BAR;
131 tx_cmd->tid_tspec = (control &
132 IEEE80211_BAR_CTRL_TID_INFO_MASK) >>
133 IEEE80211_BAR_CTRL_TID_INFO_SHIFT;
134 WARN_ON_ONCE(tx_cmd->tid_tspec >= IWL_MAX_TID_COUNT);
135 iwl_mvm_bar_check_trigger(mvm, bar->ra, tx_cmd->tid_tspec,
136 ssn);
137 } else {
138 tx_cmd->tid_tspec = IWL_TID_NON_QOS;
139 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
140 tx_flags |= TX_CMD_FLG_SEQ_CTL;
141 else
142 tx_flags &= ~TX_CMD_FLG_SEQ_CTL;
143 }
144
145 /* Default to 0 (BE) when tid_spec is set to IWL_TID_NON_QOS */
146 if (tx_cmd->tid_tspec < IWL_MAX_TID_COUNT)
147 ac = tid_to_mac80211_ac[tx_cmd->tid_tspec];
148 else
149 ac = tid_to_mac80211_ac[0];
150
151 tx_flags |= iwl_mvm_bt_coex_tx_prio(mvm, hdr, info, ac) <<
152 TX_CMD_FLG_BT_PRIO_POS;
153
154 if (ieee80211_is_mgmt(fc)) {
155 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
156 tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_ASSOC);
157 else if (ieee80211_is_action(fc))
158 tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_NONE);
159 else
160 tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_MGMT);
161
162 /* The spec allows Action frames in A-MPDU, we don't support
163 * it
164 */
165 WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_AMPDU);
166 } else if (info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO) {
167 tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_MGMT);
168 } else {
169 tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_NONE);
170 }
171
172 if (ieee80211_is_data(fc) && len > mvm->rts_threshold &&
173 !is_multicast_ether_addr(ieee80211_get_DA(hdr)))
174 tx_flags |= TX_CMD_FLG_PROT_REQUIRE;
175
176 if (fw_has_capa(&mvm->fw->ucode_capa,
177 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT) &&
178 ieee80211_action_contains_tpc(skb))
179 tx_flags |= TX_CMD_FLG_WRITE_TX_POWER;
180
181 tx_cmd->tx_flags = cpu_to_le32(tx_flags);
182 /* Total # bytes to be transmitted */
183 tx_cmd->len = cpu_to_le16((u16)skb->len);
184 tx_cmd->next_frame_len = 0;
185 tx_cmd->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
186 tx_cmd->sta_id = sta_id;
187}
188
189/*
190 * Sets the fields in the Tx cmd that are rate related
191 */
192void iwl_mvm_set_tx_cmd_rate(struct iwl_mvm *mvm, struct iwl_tx_cmd *tx_cmd,
193 struct ieee80211_tx_info *info,
194 struct ieee80211_sta *sta, __le16 fc)
195{
196 u32 rate_flags;
197 int rate_idx;
198 u8 rate_plcp;
199
200 /* Set retry limit on RTS packets */
201 tx_cmd->rts_retry_limit = IWL_RTS_DFAULT_RETRY_LIMIT;
202
203 /* Set retry limit on DATA packets and Probe Responses*/
204 if (ieee80211_is_probe_resp(fc)) {
205 tx_cmd->data_retry_limit = IWL_MGMT_DFAULT_RETRY_LIMIT;
206 tx_cmd->rts_retry_limit =
207 min(tx_cmd->data_retry_limit, tx_cmd->rts_retry_limit);
208 } else if (ieee80211_is_back_req(fc)) {
209 tx_cmd->data_retry_limit = IWL_BAR_DFAULT_RETRY_LIMIT;
210 } else {
211 tx_cmd->data_retry_limit = IWL_DEFAULT_TX_RETRY;
212 }
213
214 /*
215 * for data packets, rate info comes from the table inside the fw. This
216 * table is controlled by LINK_QUALITY commands
217 */
218
219 if (ieee80211_is_data(fc) && sta) {
220 tx_cmd->initial_rate_index = 0;
221 tx_cmd->tx_flags |= cpu_to_le32(TX_CMD_FLG_STA_RATE);
222 return;
223 } else if (ieee80211_is_back_req(fc)) {
224 tx_cmd->tx_flags |=
225 cpu_to_le32(TX_CMD_FLG_ACK | TX_CMD_FLG_BAR);
226 }
227
228 /* HT rate doesn't make sense for a non data frame */
229 WARN_ONCE(info->control.rates[0].flags & IEEE80211_TX_RC_MCS,
230 "Got an HT rate (flags:0x%x/mcs:%d) for a non data frame (fc:0x%x)\n",
231 info->control.rates[0].flags,
232 info->control.rates[0].idx,
233 le16_to_cpu(fc));
234
235 rate_idx = info->control.rates[0].idx;
236 /* if the rate isn't a well known legacy rate, take the lowest one */
237 if (rate_idx < 0 || rate_idx > IWL_RATE_COUNT_LEGACY)
238 rate_idx = rate_lowest_index(
239 &mvm->nvm_data->bands[info->band], sta);
240
241 /* For 5 GHZ band, remap mac80211 rate indices into driver indices */
242 if (info->band == IEEE80211_BAND_5GHZ)
243 rate_idx += IWL_FIRST_OFDM_RATE;
244
245 /* For 2.4 GHZ band, check that there is no need to remap */
246 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
247
248 /* Get PLCP rate for tx_cmd->rate_n_flags */
249 rate_plcp = iwl_mvm_mac80211_idx_to_hwrate(rate_idx);
250
251 mvm->mgmt_last_antenna_idx =
252 iwl_mvm_next_antenna(mvm, iwl_mvm_get_valid_tx_ant(mvm),
253 mvm->mgmt_last_antenna_idx);
254
255 if (info->band == IEEE80211_BAND_2GHZ &&
256 !iwl_mvm_bt_coex_is_shared_ant_avail(mvm))
257 rate_flags = mvm->cfg->non_shared_ant << RATE_MCS_ANT_POS;
258 else
259 rate_flags =
260 BIT(mvm->mgmt_last_antenna_idx) << RATE_MCS_ANT_POS;
261
262 /* Set CCK flag as needed */
263 if ((rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE))
264 rate_flags |= RATE_MCS_CCK_MSK;
265
266 /* Set the rate in the TX cmd */
267 tx_cmd->rate_n_flags = cpu_to_le32((u32)rate_plcp | rate_flags);
268}
269
270/*
271 * Sets the fields in the Tx cmd that are crypto related
272 */
273static void iwl_mvm_set_tx_cmd_crypto(struct iwl_mvm *mvm,
274 struct ieee80211_tx_info *info,
275 struct iwl_tx_cmd *tx_cmd,
276 struct sk_buff *skb_frag,
277 int hdrlen)
278{
279 struct ieee80211_key_conf *keyconf = info->control.hw_key;
280 u8 *crypto_hdr = skb_frag->data + hdrlen;
281 u64 pn;
282
283 switch (keyconf->cipher) {
284 case WLAN_CIPHER_SUITE_CCMP:
285 case WLAN_CIPHER_SUITE_CCMP_256:
286 iwl_mvm_set_tx_cmd_ccmp(info, tx_cmd);
287 pn = atomic64_inc_return(&keyconf->tx_pn);
288 crypto_hdr[0] = pn;
289 crypto_hdr[2] = 0;
290 crypto_hdr[3] = 0x20 | (keyconf->keyidx << 6);
291 crypto_hdr[1] = pn >> 8;
292 crypto_hdr[4] = pn >> 16;
293 crypto_hdr[5] = pn >> 24;
294 crypto_hdr[6] = pn >> 32;
295 crypto_hdr[7] = pn >> 40;
296 break;
297
298 case WLAN_CIPHER_SUITE_TKIP:
299 tx_cmd->sec_ctl = TX_CMD_SEC_TKIP;
300 ieee80211_get_tkip_p2k(keyconf, skb_frag, tx_cmd->key);
301 break;
302
303 case WLAN_CIPHER_SUITE_WEP104:
304 tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128;
305 /* fall through */
306 case WLAN_CIPHER_SUITE_WEP40:
307 tx_cmd->sec_ctl |= TX_CMD_SEC_WEP |
308 ((keyconf->keyidx << TX_CMD_SEC_WEP_KEY_IDX_POS) &
309 TX_CMD_SEC_WEP_KEY_IDX_MSK);
310
311 memcpy(&tx_cmd->key[3], keyconf->key, keyconf->keylen);
312 break;
313 default:
314 tx_cmd->sec_ctl |= TX_CMD_SEC_EXT;
315 }
316}
317
318/*
319 * Allocates and sets the Tx cmd the driver data pointers in the skb
320 */
321static struct iwl_device_cmd *
322iwl_mvm_set_tx_params(struct iwl_mvm *mvm, struct sk_buff *skb,
323 int hdrlen, struct ieee80211_sta *sta, u8 sta_id)
324{
325 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
326 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
327 struct iwl_device_cmd *dev_cmd;
328 struct iwl_tx_cmd *tx_cmd;
329
330 dev_cmd = iwl_trans_alloc_tx_cmd(mvm->trans);
331
332 if (unlikely(!dev_cmd))
333 return NULL;
334
335 memset(dev_cmd, 0, sizeof(*dev_cmd));
336 dev_cmd->hdr.cmd = TX_CMD;
337 tx_cmd = (struct iwl_tx_cmd *)dev_cmd->payload;
338
339 if (info->control.hw_key)
340 iwl_mvm_set_tx_cmd_crypto(mvm, info, tx_cmd, skb, hdrlen);
341
342 iwl_mvm_set_tx_cmd(mvm, skb, tx_cmd, info, sta_id);
343
344 iwl_mvm_set_tx_cmd_rate(mvm, tx_cmd, info, sta, hdr->frame_control);
345
346 memset(&info->status, 0, sizeof(info->status));
347
348 info->driver_data[0] = NULL;
349 info->driver_data[1] = dev_cmd;
350
351 return dev_cmd;
352}
353
354int iwl_mvm_tx_skb_non_sta(struct iwl_mvm *mvm, struct sk_buff *skb)
355{
356 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
357 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
358 struct iwl_device_cmd *dev_cmd;
359 struct iwl_tx_cmd *tx_cmd;
360 u8 sta_id;
361 int hdrlen = ieee80211_hdrlen(hdr->frame_control);
362
363 if (WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_AMPDU))
364 return -1;
365
366 if (WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM &&
367 (!info->control.vif ||
368 info->hw_queue != info->control.vif->cab_queue)))
369 return -1;
370
371 /*
372 * IWL_MVM_OFFCHANNEL_QUEUE is used for ROC packets that can be used
373 * in 2 different types of vifs, P2P & STATION. P2P uses the offchannel
374 * queue. STATION (HS2.0) uses the auxiliary context of the FW,
375 * and hence needs to be sent on the aux queue
376 */
377 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
378 info->control.vif->type == NL80211_IFTYPE_STATION)
379 IEEE80211_SKB_CB(skb)->hw_queue = mvm->aux_queue;
380
381 /*
382 * If the interface on which the frame is sent is the P2P_DEVICE
383 * or an AP/GO interface use the broadcast station associated
384 * with it; otherwise if the interface is a managed interface
385 * use the AP station associated with it for multicast traffic
386 * (this is not possible for unicast packets as a TLDS discovery
387 * response are sent without a station entry); otherwise use the
388 * AUX station.
389 */
390 sta_id = mvm->aux_sta.sta_id;
391 if (info->control.vif) {
392 struct iwl_mvm_vif *mvmvif =
393 iwl_mvm_vif_from_mac80211(info->control.vif);
394
395 if (info->control.vif->type == NL80211_IFTYPE_P2P_DEVICE ||
396 info->control.vif->type == NL80211_IFTYPE_AP)
397 sta_id = mvmvif->bcast_sta.sta_id;
398 else if (info->control.vif->type == NL80211_IFTYPE_STATION &&
399 is_multicast_ether_addr(hdr->addr1)) {
400 u8 ap_sta_id = ACCESS_ONCE(mvmvif->ap_sta_id);
401
402 if (ap_sta_id != IWL_MVM_STATION_COUNT)
403 sta_id = ap_sta_id;
404 }
405 }
406
407 IWL_DEBUG_TX(mvm, "station Id %d, queue=%d\n", sta_id, info->hw_queue);
408
409 dev_cmd = iwl_mvm_set_tx_params(mvm, skb, hdrlen, NULL, sta_id);
410 if (!dev_cmd)
411 return -1;
412
413 /* From now on, we cannot access info->control */
414 tx_cmd = (struct iwl_tx_cmd *)dev_cmd->payload;
415
416 /* Copy MAC header from skb into command buffer */
417 memcpy(tx_cmd->hdr, hdr, hdrlen);
418
419 if (iwl_trans_tx(mvm->trans, skb, dev_cmd, info->hw_queue)) {
420 iwl_trans_free_tx_cmd(mvm->trans, dev_cmd);
421 return -1;
422 }
423
424 return 0;
425}
426
427/*
428 * Sets the fields in the Tx cmd that are crypto related
429 */
430int iwl_mvm_tx_skb(struct iwl_mvm *mvm, struct sk_buff *skb,
431 struct ieee80211_sta *sta)
432{
433 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
434 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
435 struct iwl_mvm_sta *mvmsta;
436 struct iwl_device_cmd *dev_cmd;
437 struct iwl_tx_cmd *tx_cmd;
438 __le16 fc;
439 u16 seq_number = 0;
440 u8 tid = IWL_MAX_TID_COUNT;
441 u8 txq_id = info->hw_queue;
442 bool is_data_qos = false, is_ampdu = false;
443 int hdrlen;
444
445 mvmsta = iwl_mvm_sta_from_mac80211(sta);
446 fc = hdr->frame_control;
447 hdrlen = ieee80211_hdrlen(fc);
448
449 if (WARN_ON_ONCE(!mvmsta))
450 return -1;
451
452 if (WARN_ON_ONCE(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
453 return -1;
454
455 dev_cmd = iwl_mvm_set_tx_params(mvm, skb, hdrlen, sta, mvmsta->sta_id);
456 if (!dev_cmd)
457 goto drop;
458
459 tx_cmd = (struct iwl_tx_cmd *)dev_cmd->payload;
460 /* From now on, we cannot access info->control */
461
462 /*
463 * we handle that entirely ourselves -- for uAPSD the firmware
464 * will always send a notification, and for PS-Poll responses
465 * we'll notify mac80211 when getting frame status
466 */
467 info->flags &= ~IEEE80211_TX_STATUS_EOSP;
468
469 spin_lock(&mvmsta->lock);
470
471 if (ieee80211_is_data_qos(fc) && !ieee80211_is_qos_nullfunc(fc)) {
472 u8 *qc = NULL;
473 qc = ieee80211_get_qos_ctl(hdr);
474 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
475 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
476 goto drop_unlock_sta;
477
478 seq_number = mvmsta->tid_data[tid].seq_number;
479 seq_number &= IEEE80211_SCTL_SEQ;
480 hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
481 hdr->seq_ctrl |= cpu_to_le16(seq_number);
482 is_data_qos = true;
483 is_ampdu = info->flags & IEEE80211_TX_CTL_AMPDU;
484 }
485
486 /* Copy MAC header from skb into command buffer */
487 memcpy(tx_cmd->hdr, hdr, hdrlen);
488
489 WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM);
490
491 if (sta->tdls) {
492 /* default to TID 0 for non-QoS packets */
493 u8 tdls_tid = tid == IWL_MAX_TID_COUNT ? 0 : tid;
494
495 txq_id = mvmsta->hw_queue[tid_to_mac80211_ac[tdls_tid]];
496 }
497
498 if (is_ampdu) {
499 if (WARN_ON_ONCE(mvmsta->tid_data[tid].state != IWL_AGG_ON))
500 goto drop_unlock_sta;
501 txq_id = mvmsta->tid_data[tid].txq_id;
502 }
503
504 IWL_DEBUG_TX(mvm, "TX to [%d|%d] Q:%d - seq: 0x%x\n", mvmsta->sta_id,
505 tid, txq_id, IEEE80211_SEQ_TO_SN(seq_number));
506
507 if (iwl_trans_tx(mvm->trans, skb, dev_cmd, txq_id))
508 goto drop_unlock_sta;
509
510 if (is_data_qos && !ieee80211_has_morefrags(fc))
511 mvmsta->tid_data[tid].seq_number = seq_number + 0x10;
512
513 spin_unlock(&mvmsta->lock);
514
515 if (txq_id < mvm->first_agg_queue)
516 atomic_inc(&mvm->pending_frames[mvmsta->sta_id]);
517
518 return 0;
519
520drop_unlock_sta:
521 iwl_trans_free_tx_cmd(mvm->trans, dev_cmd);
522 spin_unlock(&mvmsta->lock);
523drop:
524 return -1;
525}
526
527static void iwl_mvm_check_ratid_empty(struct iwl_mvm *mvm,
528 struct ieee80211_sta *sta, u8 tid)
529{
530 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
531 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
532 struct ieee80211_vif *vif = mvmsta->vif;
533
534 lockdep_assert_held(&mvmsta->lock);
535
536 if ((tid_data->state == IWL_AGG_ON ||
537 tid_data->state == IWL_EMPTYING_HW_QUEUE_DELBA) &&
538 iwl_mvm_tid_queued(tid_data) == 0) {
539 /*
540 * Now that this aggregation queue is empty tell mac80211 so it
541 * knows we no longer have frames buffered for the station on
542 * this TID (for the TIM bitmap calculation.)
543 */
544 ieee80211_sta_set_buffered(sta, tid, false);
545 }
546
547 if (tid_data->ssn != tid_data->next_reclaimed)
548 return;
549
550 switch (tid_data->state) {
551 case IWL_EMPTYING_HW_QUEUE_ADDBA:
552 IWL_DEBUG_TX_QUEUES(mvm,
553 "Can continue addBA flow ssn = next_recl = %d\n",
554 tid_data->next_reclaimed);
555 tid_data->state = IWL_AGG_STARTING;
556 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
557 break;
558
559 case IWL_EMPTYING_HW_QUEUE_DELBA:
560 IWL_DEBUG_TX_QUEUES(mvm,
561 "Can continue DELBA flow ssn = next_recl = %d\n",
562 tid_data->next_reclaimed);
563 iwl_mvm_disable_txq(mvm, tid_data->txq_id,
564 vif->hw_queue[tid_to_mac80211_ac[tid]], tid,
565 CMD_ASYNC);
566 tid_data->state = IWL_AGG_OFF;
567 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
568 break;
569
570 default:
571 break;
572 }
573}
574
575#ifdef CONFIG_IWLWIFI_DEBUG
576const char *iwl_mvm_get_tx_fail_reason(u32 status)
577{
578#define TX_STATUS_FAIL(x) case TX_STATUS_FAIL_ ## x: return #x
579#define TX_STATUS_POSTPONE(x) case TX_STATUS_POSTPONE_ ## x: return #x
580
581 switch (status & TX_STATUS_MSK) {
582 case TX_STATUS_SUCCESS:
583 return "SUCCESS";
584 TX_STATUS_POSTPONE(DELAY);
585 TX_STATUS_POSTPONE(FEW_BYTES);
586 TX_STATUS_POSTPONE(BT_PRIO);
587 TX_STATUS_POSTPONE(QUIET_PERIOD);
588 TX_STATUS_POSTPONE(CALC_TTAK);
589 TX_STATUS_FAIL(INTERNAL_CROSSED_RETRY);
590 TX_STATUS_FAIL(SHORT_LIMIT);
591 TX_STATUS_FAIL(LONG_LIMIT);
592 TX_STATUS_FAIL(UNDERRUN);
593 TX_STATUS_FAIL(DRAIN_FLOW);
594 TX_STATUS_FAIL(RFKILL_FLUSH);
595 TX_STATUS_FAIL(LIFE_EXPIRE);
596 TX_STATUS_FAIL(DEST_PS);
597 TX_STATUS_FAIL(HOST_ABORTED);
598 TX_STATUS_FAIL(BT_RETRY);
599 TX_STATUS_FAIL(STA_INVALID);
600 TX_STATUS_FAIL(FRAG_DROPPED);
601 TX_STATUS_FAIL(TID_DISABLE);
602 TX_STATUS_FAIL(FIFO_FLUSHED);
603 TX_STATUS_FAIL(SMALL_CF_POLL);
604 TX_STATUS_FAIL(FW_DROP);
605 TX_STATUS_FAIL(STA_COLOR_MISMATCH);
606 }
607
608 return "UNKNOWN";
609
610#undef TX_STATUS_FAIL
611#undef TX_STATUS_POSTPONE
612}
613#endif /* CONFIG_IWLWIFI_DEBUG */
614
615void iwl_mvm_hwrate_to_tx_rate(u32 rate_n_flags,
616 enum ieee80211_band band,
617 struct ieee80211_tx_rate *r)
618{
619 if (rate_n_flags & RATE_HT_MCS_GF_MSK)
620 r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
621 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
622 case RATE_MCS_CHAN_WIDTH_20:
623 break;
624 case RATE_MCS_CHAN_WIDTH_40:
625 r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
626 break;
627 case RATE_MCS_CHAN_WIDTH_80:
628 r->flags |= IEEE80211_TX_RC_80_MHZ_WIDTH;
629 break;
630 case RATE_MCS_CHAN_WIDTH_160:
631 r->flags |= IEEE80211_TX_RC_160_MHZ_WIDTH;
632 break;
633 }
634 if (rate_n_flags & RATE_MCS_SGI_MSK)
635 r->flags |= IEEE80211_TX_RC_SHORT_GI;
636 if (rate_n_flags & RATE_MCS_HT_MSK) {
637 r->flags |= IEEE80211_TX_RC_MCS;
638 r->idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK;
639 } else if (rate_n_flags & RATE_MCS_VHT_MSK) {
640 ieee80211_rate_set_vht(
641 r, rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK,
642 ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >>
643 RATE_VHT_MCS_NSS_POS) + 1);
644 r->flags |= IEEE80211_TX_RC_VHT_MCS;
645 } else {
646 r->idx = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
647 band);
648 }
649}
650
651/**
652 * translate ucode response to mac80211 tx status control values
653 */
654static void iwl_mvm_hwrate_to_tx_status(u32 rate_n_flags,
655 struct ieee80211_tx_info *info)
656{
657 struct ieee80211_tx_rate *r = &info->status.rates[0];
658
659 info->status.antenna =
660 ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS);
661 iwl_mvm_hwrate_to_tx_rate(rate_n_flags, info->band, r);
662}
663
664static void iwl_mvm_rx_tx_cmd_single(struct iwl_mvm *mvm,
665 struct iwl_rx_packet *pkt)
666{
667 struct ieee80211_sta *sta;
668 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
669 int txq_id = SEQ_TO_QUEUE(sequence);
670 struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data;
671 int sta_id = IWL_MVM_TX_RES_GET_RA(tx_resp->ra_tid);
672 int tid = IWL_MVM_TX_RES_GET_TID(tx_resp->ra_tid);
673 u32 status = le16_to_cpu(tx_resp->status.status);
674 u16 ssn = iwl_mvm_get_scd_ssn(tx_resp);
675 struct iwl_mvm_sta *mvmsta;
676 struct sk_buff_head skbs;
677 u8 skb_freed = 0;
678 u16 next_reclaimed, seq_ctl;
679
680 __skb_queue_head_init(&skbs);
681
682 seq_ctl = le16_to_cpu(tx_resp->seq_ctl);
683
684 /* we can free until ssn % q.n_bd not inclusive */
685 iwl_trans_reclaim(mvm->trans, txq_id, ssn, &skbs);
686
687 while (!skb_queue_empty(&skbs)) {
688 struct sk_buff *skb = __skb_dequeue(&skbs);
689 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
690
691 skb_freed++;
692
693 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
694
695 memset(&info->status, 0, sizeof(info->status));
696
697 info->flags &= ~IEEE80211_TX_CTL_AMPDU;
698
699 /* inform mac80211 about what happened with the frame */
700 switch (status & TX_STATUS_MSK) {
701 case TX_STATUS_SUCCESS:
702 case TX_STATUS_DIRECT_DONE:
703 info->flags |= IEEE80211_TX_STAT_ACK;
704 break;
705 case TX_STATUS_FAIL_DEST_PS:
706 info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
707 break;
708 default:
709 break;
710 }
711
712 info->status.rates[0].count = tx_resp->failure_frame + 1;
713 iwl_mvm_hwrate_to_tx_status(le32_to_cpu(tx_resp->initial_rate),
714 info);
715 info->status.status_driver_data[1] =
716 (void *)(uintptr_t)le32_to_cpu(tx_resp->initial_rate);
717
718 /* Single frame failure in an AMPDU queue => send BAR */
719 if (txq_id >= mvm->first_agg_queue &&
720 !(info->flags & IEEE80211_TX_STAT_ACK) &&
721 !(info->flags & IEEE80211_TX_STAT_TX_FILTERED))
722 info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
723
724 /* W/A FW bug: seq_ctl is wrong when the status isn't success */
725 if (status != TX_STATUS_SUCCESS) {
726 struct ieee80211_hdr *hdr = (void *)skb->data;
727 seq_ctl = le16_to_cpu(hdr->seq_ctrl);
728 }
729
730 /*
731 * TODO: this is not accurate if we are freeing more than one
732 * packet.
733 */
734 info->status.tx_time =
735 le16_to_cpu(tx_resp->wireless_media_time);
736 BUILD_BUG_ON(ARRAY_SIZE(info->status.status_driver_data) < 1);
737 info->status.status_driver_data[0] =
738 (void *)(uintptr_t)tx_resp->reduced_tpc;
739
740 ieee80211_tx_status(mvm->hw, skb);
741 }
742
743 if (txq_id >= mvm->first_agg_queue) {
744 /* If this is an aggregation queue, we use the ssn since:
745 * ssn = wifi seq_num % 256.
746 * The seq_ctl is the sequence control of the packet to which
747 * this Tx response relates. But if there is a hole in the
748 * bitmap of the BA we received, this Tx response may allow to
749 * reclaim the hole and all the subsequent packets that were
750 * already acked. In that case, seq_ctl != ssn, and the next
751 * packet to be reclaimed will be ssn and not seq_ctl. In that
752 * case, several packets will be reclaimed even if
753 * frame_count = 1.
754 *
755 * The ssn is the index (% 256) of the latest packet that has
756 * treated (acked / dropped) + 1.
757 */
758 next_reclaimed = ssn;
759 } else {
760 /* The next packet to be reclaimed is the one after this one */
761 next_reclaimed = IEEE80211_SEQ_TO_SN(seq_ctl + 0x10);
762 }
763
764 IWL_DEBUG_TX_REPLY(mvm,
765 "TXQ %d status %s (0x%08x)\n",
766 txq_id, iwl_mvm_get_tx_fail_reason(status), status);
767
768 IWL_DEBUG_TX_REPLY(mvm,
769 "\t\t\t\tinitial_rate 0x%x retries %d, idx=%d ssn=%d next_reclaimed=0x%x seq_ctl=0x%x\n",
770 le32_to_cpu(tx_resp->initial_rate),
771 tx_resp->failure_frame, SEQ_TO_INDEX(sequence),
772 ssn, next_reclaimed, seq_ctl);
773
774 rcu_read_lock();
775
776 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
777 /*
778 * sta can't be NULL otherwise it'd mean that the sta has been freed in
779 * the firmware while we still have packets for it in the Tx queues.
780 */
781 if (WARN_ON_ONCE(!sta))
782 goto out;
783
784 if (!IS_ERR(sta)) {
785 mvmsta = iwl_mvm_sta_from_mac80211(sta);
786
787 if (tid != IWL_TID_NON_QOS) {
788 struct iwl_mvm_tid_data *tid_data =
789 &mvmsta->tid_data[tid];
790
791 spin_lock_bh(&mvmsta->lock);
792 tid_data->next_reclaimed = next_reclaimed;
793 IWL_DEBUG_TX_REPLY(mvm, "Next reclaimed packet:%d\n",
794 next_reclaimed);
795 iwl_mvm_check_ratid_empty(mvm, sta, tid);
796 spin_unlock_bh(&mvmsta->lock);
797 }
798
799 if (mvmsta->next_status_eosp) {
800 mvmsta->next_status_eosp = false;
801 ieee80211_sta_eosp(sta);
802 }
803 } else {
804 mvmsta = NULL;
805 }
806
807 /*
808 * If the txq is not an AMPDU queue, there is no chance we freed
809 * several skbs. Check that out...
810 */
811 if (txq_id >= mvm->first_agg_queue)
812 goto out;
813
814 /* We can't free more than one frame at once on a shared queue */
815 WARN_ON(skb_freed > 1);
816
817 /* If we have still frames for this STA nothing to do here */
818 if (!atomic_sub_and_test(skb_freed, &mvm->pending_frames[sta_id]))
819 goto out;
820
821 if (mvmsta && mvmsta->vif->type == NL80211_IFTYPE_AP) {
822
823 /*
824 * If there are no pending frames for this STA and
825 * the tx to this station is not disabled, notify
826 * mac80211 that this station can now wake up in its
827 * STA table.
828 * If mvmsta is not NULL, sta is valid.
829 */
830
831 spin_lock_bh(&mvmsta->lock);
832
833 if (!mvmsta->disable_tx)
834 ieee80211_sta_block_awake(mvm->hw, sta, false);
835
836 spin_unlock_bh(&mvmsta->lock);
837 }
838
839 if (PTR_ERR(sta) == -EBUSY || PTR_ERR(sta) == -ENOENT) {
840 /*
841 * We are draining and this was the last packet - pre_rcu_remove
842 * has been called already. We might be after the
843 * synchronize_net already.
844 * Don't rely on iwl_mvm_rm_sta to see the empty Tx queues.
845 */
846 set_bit(sta_id, mvm->sta_drained);
847 schedule_work(&mvm->sta_drained_wk);
848 }
849
850out:
851 rcu_read_unlock();
852}
853
854#ifdef CONFIG_IWLWIFI_DEBUG
855#define AGG_TX_STATE_(x) case AGG_TX_STATE_ ## x: return #x
856static const char *iwl_get_agg_tx_status(u16 status)
857{
858 switch (status & AGG_TX_STATE_STATUS_MSK) {
859 AGG_TX_STATE_(TRANSMITTED);
860 AGG_TX_STATE_(UNDERRUN);
861 AGG_TX_STATE_(BT_PRIO);
862 AGG_TX_STATE_(FEW_BYTES);
863 AGG_TX_STATE_(ABORT);
864 AGG_TX_STATE_(LAST_SENT_TTL);
865 AGG_TX_STATE_(LAST_SENT_TRY_CNT);
866 AGG_TX_STATE_(LAST_SENT_BT_KILL);
867 AGG_TX_STATE_(SCD_QUERY);
868 AGG_TX_STATE_(TEST_BAD_CRC32);
869 AGG_TX_STATE_(RESPONSE);
870 AGG_TX_STATE_(DUMP_TX);
871 AGG_TX_STATE_(DELAY_TX);
872 }
873
874 return "UNKNOWN";
875}
876
877static void iwl_mvm_rx_tx_cmd_agg_dbg(struct iwl_mvm *mvm,
878 struct iwl_rx_packet *pkt)
879{
880 struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data;
881 struct agg_tx_status *frame_status = &tx_resp->status;
882 int i;
883
884 for (i = 0; i < tx_resp->frame_count; i++) {
885 u16 fstatus = le16_to_cpu(frame_status[i].status);
886
887 IWL_DEBUG_TX_REPLY(mvm,
888 "status %s (0x%04x), try-count (%d) seq (0x%x)\n",
889 iwl_get_agg_tx_status(fstatus),
890 fstatus & AGG_TX_STATE_STATUS_MSK,
891 (fstatus & AGG_TX_STATE_TRY_CNT_MSK) >>
892 AGG_TX_STATE_TRY_CNT_POS,
893 le16_to_cpu(frame_status[i].sequence));
894 }
895}
896#else
897static void iwl_mvm_rx_tx_cmd_agg_dbg(struct iwl_mvm *mvm,
898 struct iwl_rx_packet *pkt)
899{}
900#endif /* CONFIG_IWLWIFI_DEBUG */
901
902static void iwl_mvm_rx_tx_cmd_agg(struct iwl_mvm *mvm,
903 struct iwl_rx_packet *pkt)
904{
905 struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data;
906 int sta_id = IWL_MVM_TX_RES_GET_RA(tx_resp->ra_tid);
907 int tid = IWL_MVM_TX_RES_GET_TID(tx_resp->ra_tid);
908 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
909 struct ieee80211_sta *sta;
910
911 if (WARN_ON_ONCE(SEQ_TO_QUEUE(sequence) < mvm->first_agg_queue))
912 return;
913
914 if (WARN_ON_ONCE(tid == IWL_TID_NON_QOS))
915 return;
916
917 iwl_mvm_rx_tx_cmd_agg_dbg(mvm, pkt);
918
919 rcu_read_lock();
920
921 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
922
923 if (!WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {
924 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
925 mvmsta->tid_data[tid].rate_n_flags =
926 le32_to_cpu(tx_resp->initial_rate);
927 mvmsta->tid_data[tid].reduced_tpc = tx_resp->reduced_tpc;
928 mvmsta->tid_data[tid].tx_time =
929 le16_to_cpu(tx_resp->wireless_media_time);
930 }
931
932 rcu_read_unlock();
933}
934
935void iwl_mvm_rx_tx_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
936{
937 struct iwl_rx_packet *pkt = rxb_addr(rxb);
938 struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data;
939
940 if (tx_resp->frame_count == 1)
941 iwl_mvm_rx_tx_cmd_single(mvm, pkt);
942 else
943 iwl_mvm_rx_tx_cmd_agg(mvm, pkt);
944}
945
946static void iwl_mvm_tx_info_from_ba_notif(struct ieee80211_tx_info *info,
947 struct iwl_mvm_ba_notif *ba_notif,
948 struct iwl_mvm_tid_data *tid_data)
949{
950 info->flags |= IEEE80211_TX_STAT_AMPDU;
951 info->status.ampdu_ack_len = ba_notif->txed_2_done;
952 info->status.ampdu_len = ba_notif->txed;
953 iwl_mvm_hwrate_to_tx_status(tid_data->rate_n_flags,
954 info);
955 /* TODO: not accounted if the whole A-MPDU failed */
956 info->status.tx_time = tid_data->tx_time;
957 info->status.status_driver_data[0] =
958 (void *)(uintptr_t)tid_data->reduced_tpc;
959 info->status.status_driver_data[1] =
960 (void *)(uintptr_t)tid_data->rate_n_flags;
961}
962
963void iwl_mvm_rx_ba_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
964{
965 struct iwl_rx_packet *pkt = rxb_addr(rxb);
966 struct iwl_mvm_ba_notif *ba_notif = (void *)pkt->data;
967 struct sk_buff_head reclaimed_skbs;
968 struct iwl_mvm_tid_data *tid_data;
969 struct ieee80211_sta *sta;
970 struct iwl_mvm_sta *mvmsta;
971 struct sk_buff *skb;
972 int sta_id, tid, freed;
973 /* "flow" corresponds to Tx queue */
974 u16 scd_flow = le16_to_cpu(ba_notif->scd_flow);
975 /* "ssn" is start of block-ack Tx window, corresponds to index
976 * (in Tx queue's circular buffer) of first TFD/frame in window */
977 u16 ba_resp_scd_ssn = le16_to_cpu(ba_notif->scd_ssn);
978
979 sta_id = ba_notif->sta_id;
980 tid = ba_notif->tid;
981
982 if (WARN_ONCE(sta_id >= IWL_MVM_STATION_COUNT ||
983 tid >= IWL_MAX_TID_COUNT,
984 "sta_id %d tid %d", sta_id, tid))
985 return;
986
987 rcu_read_lock();
988
989 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
990
991 /* Reclaiming frames for a station that has been deleted ? */
992 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {
993 rcu_read_unlock();
994 return;
995 }
996
997 mvmsta = iwl_mvm_sta_from_mac80211(sta);
998 tid_data = &mvmsta->tid_data[tid];
999
1000 if (tid_data->txq_id != scd_flow) {
1001 IWL_ERR(mvm,
1002 "invalid BA notification: Q %d, tid %d, flow %d\n",
1003 tid_data->txq_id, tid, scd_flow);
1004 rcu_read_unlock();
1005 return;
1006 }
1007
1008 spin_lock_bh(&mvmsta->lock);
1009
1010 __skb_queue_head_init(&reclaimed_skbs);
1011
1012 /*
1013 * Release all TFDs before the SSN, i.e. all TFDs in front of
1014 * block-ack window (we assume that they've been successfully
1015 * transmitted ... if not, it's too late anyway).
1016 */
1017 iwl_trans_reclaim(mvm->trans, scd_flow, ba_resp_scd_ssn,
1018 &reclaimed_skbs);
1019
1020 IWL_DEBUG_TX_REPLY(mvm,
1021 "BA_NOTIFICATION Received from %pM, sta_id = %d\n",
1022 (u8 *)&ba_notif->sta_addr_lo32,
1023 ba_notif->sta_id);
1024 IWL_DEBUG_TX_REPLY(mvm,
1025 "TID = %d, SeqCtl = %d, bitmap = 0x%llx, scd_flow = %d, scd_ssn = %d sent:%d, acked:%d\n",
1026 ba_notif->tid, le16_to_cpu(ba_notif->seq_ctl),
1027 (unsigned long long)le64_to_cpu(ba_notif->bitmap),
1028 scd_flow, ba_resp_scd_ssn, ba_notif->txed,
1029 ba_notif->txed_2_done);
1030
1031 tid_data->next_reclaimed = ba_resp_scd_ssn;
1032
1033 iwl_mvm_check_ratid_empty(mvm, sta, tid);
1034
1035 freed = 0;
1036
1037 skb_queue_walk(&reclaimed_skbs, skb) {
1038 struct ieee80211_hdr *hdr = (void *)skb->data;
1039 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1040
1041 if (ieee80211_is_data_qos(hdr->frame_control))
1042 freed++;
1043 else
1044 WARN_ON_ONCE(1);
1045
1046 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1047
1048 memset(&info->status, 0, sizeof(info->status));
1049 /* Packet was transmitted successfully, failures come as single
1050 * frames because before failing a frame the firmware transmits
1051 * it without aggregation at least once.
1052 */
1053 info->flags |= IEEE80211_TX_STAT_ACK;
1054
1055 /* this is the first skb we deliver in this batch */
1056 /* put the rate scaling data there */
1057 if (freed == 1)
1058 iwl_mvm_tx_info_from_ba_notif(info, ba_notif, tid_data);
1059 }
1060
1061 spin_unlock_bh(&mvmsta->lock);
1062
1063 /* We got a BA notif with 0 acked or scd_ssn didn't progress which is
1064 * possible (i.e. first MPDU in the aggregation wasn't acked)
1065 * Still it's important to update RS about sent vs. acked.
1066 */
1067 if (skb_queue_empty(&reclaimed_skbs)) {
1068 struct ieee80211_tx_info ba_info = {};
1069 struct ieee80211_chanctx_conf *chanctx_conf = NULL;
1070
1071 if (mvmsta->vif)
1072 chanctx_conf =
1073 rcu_dereference(mvmsta->vif->chanctx_conf);
1074
1075 if (WARN_ON_ONCE(!chanctx_conf))
1076 goto out;
1077
1078 ba_info.band = chanctx_conf->def.chan->band;
1079 iwl_mvm_tx_info_from_ba_notif(&ba_info, ba_notif, tid_data);
1080
1081 IWL_DEBUG_TX_REPLY(mvm, "No reclaim. Update rs directly\n");
1082 iwl_mvm_rs_tx_status(mvm, sta, tid, &ba_info);
1083 }
1084
1085out:
1086 rcu_read_unlock();
1087
1088 while (!skb_queue_empty(&reclaimed_skbs)) {
1089 skb = __skb_dequeue(&reclaimed_skbs);
1090 ieee80211_tx_status(mvm->hw, skb);
1091 }
1092}
1093
1094/*
1095 * Note that there are transports that buffer frames before they reach
1096 * the firmware. This means that after flush_tx_path is called, the
1097 * queue might not be empty. The race-free way to handle this is to:
1098 * 1) set the station as draining
1099 * 2) flush the Tx path
1100 * 3) wait for the transport queues to be empty
1101 */
1102int iwl_mvm_flush_tx_path(struct iwl_mvm *mvm, u32 tfd_msk, u32 flags)
1103{
1104 int ret;
1105 struct iwl_tx_path_flush_cmd flush_cmd = {
1106 .queues_ctl = cpu_to_le32(tfd_msk),
1107 .flush_ctl = cpu_to_le16(DUMP_TX_FIFO_FLUSH),
1108 };
1109
1110 ret = iwl_mvm_send_cmd_pdu(mvm, TXPATH_FLUSH, flags,
1111 sizeof(flush_cmd), &flush_cmd);
1112 if (ret)
1113 IWL_ERR(mvm, "Failed to send flush command (%d)\n", ret);
1114 return ret;
1115}
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-20 22:24:04 -0500