blob: dd8f857a1fbcde8fe3d02e5cc23b3b49a5132dd2 [file] [log] [blame]
Thomas Gleixnerd2912cb2019-06-04 10:11:33 +02001// SPDX-License-Identifier: GPL-2.0-only
Johannes Bergfe7a5d52009-11-18 18:42:47 +01002/*
3 * Copyright 2002-2005, Instant802 Networks, Inc.
4 * Copyright 2005-2006, Devicescape Software, Inc.
5 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
Jouni Malinen026331c2010-02-15 12:53:10 +02006 * Copyright 2008-2010 Johannes Berg <johannes@sipsolutions.net>
Johannes Bergd98ad832014-09-03 15:24:57 +03007 * Copyright 2013-2014 Intel Mobile Communications GmbH
Ayala Bekera17a58a2024-03-18 18:53:31 +02008 * Copyright 2021-2024 Intel Corporation
Johannes Bergfe7a5d52009-11-18 18:42:47 +01009 */
10
Paul Gortmakerbc3b2d72011-07-15 11:47:34 -040011#include <linux/export.h>
Felix Fietkau888d04d2012-03-01 15:22:09 +010012#include <linux/etherdevice.h>
Johannes Bergfe7a5d52009-11-18 18:42:47 +010013#include <net/mac80211.h>
Johannes Bergd26ad372012-02-20 11:38:41 +010014#include <asm/unaligned.h>
Johannes Bergfe7a5d52009-11-18 18:42:47 +010015#include "ieee80211_i.h"
16#include "rate.h"
17#include "mesh.h"
18#include "led.h"
Johannes Berg948d8872011-09-29 16:04:29 +020019#include "wme.h"
Johannes Bergfe7a5d52009-11-18 18:42:47 +010020
21
22void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw,
23 struct sk_buff *skb)
24{
25 struct ieee80211_local *local = hw_to_local(hw);
26 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
27 int tmp;
28
29 skb->pkt_type = IEEE80211_TX_STATUS_MSG;
30 skb_queue_tail(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS ?
31 &local->skb_queue : &local->skb_queue_unreliable, skb);
32 tmp = skb_queue_len(&local->skb_queue) +
33 skb_queue_len(&local->skb_queue_unreliable);
34 while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT &&
35 (skb = skb_dequeue(&local->skb_queue_unreliable))) {
Felix Fietkauc3e77242012-10-08 14:39:33 +020036 ieee80211_free_txskb(hw, skb);
Johannes Bergfe7a5d52009-11-18 18:42:47 +010037 tmp--;
38 I802_DEBUG_INC(local->tx_status_drop);
39 }
40 tasklet_schedule(&local->tasklet);
41}
42EXPORT_SYMBOL(ieee80211_tx_status_irqsafe);
43
44static void ieee80211_handle_filtered_frame(struct ieee80211_local *local,
45 struct sta_info *sta,
46 struct sk_buff *skb)
47{
48 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
Johannes Berg948d8872011-09-29 16:04:29 +020049 struct ieee80211_hdr *hdr = (void *)skb->data;
50 int ac;
Johannes Bergfe7a5d52009-11-18 18:42:47 +010051
Felix Fietkau890030d2017-02-22 16:16:07 +010052 if (info->flags & (IEEE80211_TX_CTL_NO_PS_BUFFER |
Felix Fietkau1d182882020-11-11 19:33:57 +010053 IEEE80211_TX_CTL_AMPDU |
54 IEEE80211_TX_CTL_HW_80211_ENCAP)) {
Helmut Schaada629cf2016-01-05 17:42:13 +010055 ieee80211_free_txskb(&local->hw, skb);
56 return;
57 }
58
Johannes Bergfe7a5d52009-11-18 18:42:47 +010059 /*
Johannes Berg697e6a02010-01-17 01:47:56 +010060 * This skb 'survived' a round-trip through the driver, and
61 * hopefully the driver didn't mangle it too badly. However,
Walter Goldens77c20612010-05-18 04:44:54 -070062 * we can definitely not rely on the control information
Johannes Bergc6fcf6b2010-01-17 01:47:59 +010063 * being correct. Clear it so we don't get junk there, and
64 * indicate that it needs new processing, but must not be
65 * modified/encrypted again.
Johannes Berg697e6a02010-01-17 01:47:56 +010066 */
67 memset(&info->control, 0, sizeof(info->control));
Johannes Berg18c94902010-01-25 19:07:39 +010068
69 info->control.jiffies = jiffies;
70 info->control.vif = &sta->sdata->vif;
Felix Fietkaucc20ff2c2020-09-08 14:36:57 +020071 info->control.flags |= IEEE80211_TX_INTCFL_NEED_TXPROCESSING;
72 info->flags |= IEEE80211_TX_INTFL_RETRANSMISSION;
Christian Lampartereb7d3062010-09-21 21:36:18 +020073 info->flags &= ~IEEE80211_TX_TEMPORARY_FLAGS;
Johannes Berg697e6a02010-01-17 01:47:56 +010074
Sriram R046d2e72022-04-04 21:11:23 +053075 sta->deflink.status_stats.filtered++;
Johannes Bergfe7a5d52009-11-18 18:42:47 +010076
Johannes Berg8a8656f2011-09-29 16:04:31 +020077 /*
78 * Clear more-data bit on filtered frames, it might be set
79 * but later frames might time out so it might have to be
80 * clear again ... It's all rather unlikely (this frame
81 * should time out first, right?) but let's not confuse
82 * peers unnecessarily.
83 */
84 if (hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_MOREDATA))
85 hdr->frame_control &= ~cpu_to_le16(IEEE80211_FCTL_MOREDATA);
86
Johannes Berg948d8872011-09-29 16:04:29 +020087 if (ieee80211_is_data_qos(hdr->frame_control)) {
Johannes Berg47086fc2011-09-29 16:04:33 +020088 u8 *p = ieee80211_get_qos_ctl(hdr);
89 int tid = *p & IEEE80211_QOS_CTL_TID_MASK;
90
91 /*
92 * Clear EOSP if set, this could happen e.g.
93 * if an absence period (us being a P2P GO)
94 * shortens the SP.
95 */
96 if (*p & IEEE80211_QOS_CTL_EOSP)
97 *p &= ~IEEE80211_QOS_CTL_EOSP;
Amadeusz Sławiński731977e2017-01-24 16:42:10 +010098 ac = ieee80211_ac_from_tid(tid);
Johannes Berg948d8872011-09-29 16:04:29 +020099 } else {
100 ac = IEEE80211_AC_BE;
101 }
102
Johannes Bergfe7a5d52009-11-18 18:42:47 +0100103 /*
104 * Clear the TX filter mask for this STA when sending the next
105 * packet. If the STA went to power save mode, this will happen
106 * when it wakes up for the next time.
107 */
Johannes Bergc2c98fd2011-09-29 16:04:36 +0200108 set_sta_flag(sta, WLAN_STA_CLEAR_PS_FILT);
Felix Fietkauf7418bc2015-09-24 14:59:49 +0200109 ieee80211_clear_fast_xmit(sta);
Johannes Bergfe7a5d52009-11-18 18:42:47 +0100110
111 /*
112 * This code races in the following way:
113 *
114 * (1) STA sends frame indicating it will go to sleep and does so
115 * (2) hardware/firmware adds STA to filter list, passes frame up
116 * (3) hardware/firmware processes TX fifo and suppresses a frame
117 * (4) we get TX status before having processed the frame and
118 * knowing that the STA has gone to sleep.
119 *
120 * This is actually quite unlikely even when both those events are
121 * processed from interrupts coming in quickly after one another or
122 * even at the same time because we queue both TX status events and
123 * RX frames to be processed by a tasklet and process them in the
124 * same order that they were received or TX status last. Hence, there
125 * is no race as long as the frame RX is processed before the next TX
126 * status, which drivers can ensure, see below.
127 *
128 * Note that this can only happen if the hardware or firmware can
129 * actually add STAs to the filter list, if this is done by the
130 * driver in response to set_tim() (which will only reduce the race
131 * this whole filtering tries to solve, not completely solve it)
132 * this situation cannot happen.
133 *
134 * To completely solve this race drivers need to make sure that they
135 * (a) don't mix the irq-safe/not irq-safe TX status/RX processing
136 * functions and
137 * (b) always process RX events before TX status events if ordering
138 * can be unknown, for example with different interrupt status
139 * bits.
Arik Nemtsovd057e5a2011-01-31 22:29:13 +0200140 * (c) if PS mode transitions are manual (i.e. the flag
141 * %IEEE80211_HW_AP_LINK_PS is set), always process PS state
142 * changes before calling TX status events if ordering can be
143 * unknown.
Johannes Bergfe7a5d52009-11-18 18:42:47 +0100144 */
Johannes Bergc2c98fd2011-09-29 16:04:36 +0200145 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
Johannes Berg948d8872011-09-29 16:04:29 +0200146 skb_queue_len(&sta->tx_filtered[ac]) < STA_MAX_TX_BUFFER) {
147 skb_queue_tail(&sta->tx_filtered[ac], skb);
Johannes Bergc868cb352011-09-29 16:04:27 +0200148 sta_info_recalc_tim(sta);
Johannes Berg60750392011-09-29 16:04:28 +0200149
150 if (!timer_pending(&local->sta_cleanup))
151 mod_timer(&local->sta_cleanup,
152 round_jiffies(jiffies +
153 STA_INFO_CLEANUP_INTERVAL));
Johannes Bergfe7a5d52009-11-18 18:42:47 +0100154 return;
155 }
156
Johannes Bergc2c98fd2011-09-29 16:04:36 +0200157 if (!test_sta_flag(sta, WLAN_STA_PS_STA) &&
Johannes Bergfe7a5d52009-11-18 18:42:47 +0100158 !(info->flags & IEEE80211_TX_INTFL_RETRIED)) {
159 /* Software retry the packet once */
160 info->flags |= IEEE80211_TX_INTFL_RETRIED;
161 ieee80211_add_pending_skb(local, skb);
162 return;
163 }
164
Johannes Bergbdcbd8e2012-06-22 11:29:50 +0200165 ps_dbg_ratelimited(sta->sdata,
166 "dropped TX filtered frame, queue_len=%d PS=%d @%lu\n",
167 skb_queue_len(&sta->tx_filtered[ac]),
168 !!test_sta_flag(sta, WLAN_STA_PS_STA), jiffies);
Felix Fietkauc3e77242012-10-08 14:39:33 +0200169 ieee80211_free_txskb(&local->hw, skb);
Johannes Bergfe7a5d52009-11-18 18:42:47 +0100170}
171
Felix Fietkauf0425be2011-08-28 21:11:01 +0200172static void ieee80211_check_pending_bar(struct sta_info *sta, u8 *addr, u8 tid)
173{
174 struct tid_ampdu_tx *tid_tx;
175
176 tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]);
177 if (!tid_tx || !tid_tx->bar_pending)
178 return;
179
180 tid_tx->bar_pending = false;
Felix Fietkau8c771242011-08-20 15:53:55 +0200181 ieee80211_send_bar(&sta->sdata->vif, addr, tid, tid_tx->failed_bar_ssn);
Felix Fietkauf0425be2011-08-28 21:11:01 +0200182}
183
Johannes Berg0f782312009-12-01 13:37:02 +0100184static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb)
185{
186 struct ieee80211_mgmt *mgmt = (void *) skb->data;
Felix Fietkau0c5b9322013-09-29 21:39:34 +0200187
Felix Fietkauf0425be2011-08-28 21:11:01 +0200188 if (ieee80211_is_data_qos(mgmt->frame_control)) {
189 struct ieee80211_hdr *hdr = (void *) skb->data;
190 u8 *qc = ieee80211_get_qos_ctl(hdr);
191 u16 tid = qc[0] & 0xf;
192
193 ieee80211_check_pending_bar(sta, hdr->addr1, tid);
194 }
Johannes Berg0f782312009-12-01 13:37:02 +0100195}
196
Felix Fietkauf0425be2011-08-28 21:11:01 +0200197static void ieee80211_set_bar_pending(struct sta_info *sta, u8 tid, u16 ssn)
198{
199 struct tid_ampdu_tx *tid_tx;
200
201 tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]);
202 if (!tid_tx)
203 return;
204
205 tid_tx->failed_bar_ssn = ssn;
206 tid_tx->bar_pending = true;
207}
208
John Crispin3d07ffc2019-07-14 17:44:16 +0200209static int ieee80211_tx_radiotap_len(struct ieee80211_tx_info *info,
210 struct ieee80211_tx_status *status)
Helmut Schaaa2fe8162011-10-11 18:08:54 +0200211{
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200212 struct ieee80211_rate_status *status_rate = NULL;
Helmut Schaaa2fe8162011-10-11 18:08:54 +0200213 int len = sizeof(struct ieee80211_radiotap_header);
214
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200215 if (status && status->n_rates)
216 status_rate = &status->rates[status->n_rates - 1];
217
Helmut Schaaa2fe8162011-10-11 18:08:54 +0200218 /* IEEE80211_RADIOTAP_RATE rate */
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200219 if (status_rate && !(status_rate->rate_idx.flags &
220 (RATE_INFO_FLAGS_MCS |
221 RATE_INFO_FLAGS_DMG |
222 RATE_INFO_FLAGS_EDMG |
223 RATE_INFO_FLAGS_VHT_MCS |
224 RATE_INFO_FLAGS_HE_MCS)))
John Crispindc649d62019-08-07 09:59:46 +0200225 len += 2;
226 else if (info->status.rates[0].idx >= 0 &&
227 !(info->status.rates[0].flags &
228 (IEEE80211_TX_RC_MCS | IEEE80211_TX_RC_VHT_MCS)))
Helmut Schaaa2fe8162011-10-11 18:08:54 +0200229 len += 2;
230
231 /* IEEE80211_RADIOTAP_TX_FLAGS */
232 len += 2;
233
234 /* IEEE80211_RADIOTAP_DATA_RETRIES */
235 len += 1;
236
Karl Beldana8241312013-07-27 11:47:04 +0200237 /* IEEE80211_RADIOTAP_MCS
238 * IEEE80211_RADIOTAP_VHT */
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200239 if (status_rate) {
240 if (status_rate->rate_idx.flags & RATE_INFO_FLAGS_MCS)
John Crispin3d07ffc2019-07-14 17:44:16 +0200241 len += 3;
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200242 else if (status_rate->rate_idx.flags & RATE_INFO_FLAGS_VHT_MCS)
John Crispin3d07ffc2019-07-14 17:44:16 +0200243 len = ALIGN(len, 2) + 12;
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200244 else if (status_rate->rate_idx.flags & RATE_INFO_FLAGS_HE_MCS)
John Crispin3d07ffc2019-07-14 17:44:16 +0200245 len = ALIGN(len, 2) + 12;
246 } else if (info->status.rates[0].idx >= 0) {
Karl Beldana8241312013-07-27 11:47:04 +0200247 if (info->status.rates[0].flags & IEEE80211_TX_RC_MCS)
248 len += 3;
249 else if (info->status.rates[0].flags & IEEE80211_TX_RC_VHT_MCS)
250 len = ALIGN(len, 2) + 12;
251 }
Helmut Schaa7f2a5e22011-10-11 18:08:55 +0200252
Helmut Schaaa2fe8162011-10-11 18:08:54 +0200253 return len;
254}
255
Simon Wunderlich2103dec2013-07-08 16:55:53 +0200256static void
Karl Beldana8241312013-07-27 11:47:04 +0200257ieee80211_add_tx_radiotap_header(struct ieee80211_local *local,
Simon Wunderlich2103dec2013-07-08 16:55:53 +0200258 struct sk_buff *skb, int retry_count,
Johannes Berg2400dfe2023-08-29 12:17:44 +0200259 int rtap_len,
John Crispin3d07ffc2019-07-14 17:44:16 +0200260 struct ieee80211_tx_status *status)
Helmut Schaaa2fe8162011-10-11 18:08:54 +0200261{
262 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
263 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
264 struct ieee80211_radiotap_header *rthdr;
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200265 struct ieee80211_rate_status *status_rate = NULL;
Helmut Schaaa2fe8162011-10-11 18:08:54 +0200266 unsigned char *pos;
John Crispin3d07ffc2019-07-14 17:44:16 +0200267 u16 legacy_rate = 0;
Helmut Schaa9c8f2c42011-11-18 17:02:16 +0100268 u16 txflags;
Helmut Schaaa2fe8162011-10-11 18:08:54 +0200269
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200270 if (status && status->n_rates)
271 status_rate = &status->rates[status->n_rates - 1];
272
Johannes Bergd58ff352017-06-16 14:29:23 +0200273 rthdr = skb_push(skb, rtap_len);
Helmut Schaaa2fe8162011-10-11 18:08:54 +0200274
275 memset(rthdr, 0, rtap_len);
276 rthdr->it_len = cpu_to_le16(rtap_len);
277 rthdr->it_present =
Kees Cook5cafd372021-08-06 14:51:12 -0700278 cpu_to_le32(BIT(IEEE80211_RADIOTAP_TX_FLAGS) |
279 BIT(IEEE80211_RADIOTAP_DATA_RETRIES));
Helmut Schaaa2fe8162011-10-11 18:08:54 +0200280 pos = (unsigned char *)(rthdr + 1);
281
282 /*
283 * XXX: Once radiotap gets the bitmap reset thing the vendor
284 * extensions proposal contains, we can actually report
285 * the whole set of tries we did.
286 */
287
288 /* IEEE80211_RADIOTAP_RATE */
Simon Wunderlich2103dec2013-07-08 16:55:53 +0200289
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200290 if (status_rate) {
291 if (!(status_rate->rate_idx.flags &
292 (RATE_INFO_FLAGS_MCS |
293 RATE_INFO_FLAGS_DMG |
294 RATE_INFO_FLAGS_EDMG |
295 RATE_INFO_FLAGS_VHT_MCS |
296 RATE_INFO_FLAGS_HE_MCS)))
297 legacy_rate = status_rate->rate_idx.legacy;
John Crispin8db6e732019-08-07 09:59:47 +0200298 } else if (info->status.rates[0].idx >= 0 &&
John Crispin3d07ffc2019-07-14 17:44:16 +0200299 !(info->status.rates[0].flags & (IEEE80211_TX_RC_MCS |
Johannes Berge5c0ee02022-06-01 14:16:00 +0200300 IEEE80211_TX_RC_VHT_MCS))) {
301 struct ieee80211_supported_band *sband;
302
303 sband = local->hw.wiphy->bands[info->band];
John Crispin3d07ffc2019-07-14 17:44:16 +0200304 legacy_rate =
305 sband->bitrates[info->status.rates[0].idx].bitrate;
Johannes Berge5c0ee02022-06-01 14:16:00 +0200306 }
John Crispin3d07ffc2019-07-14 17:44:16 +0200307
308 if (legacy_rate) {
Kees Cook5cafd372021-08-06 14:51:12 -0700309 rthdr->it_present |= cpu_to_le32(BIT(IEEE80211_RADIOTAP_RATE));
Johannes Berg2400dfe2023-08-29 12:17:44 +0200310 *pos = DIV_ROUND_UP(legacy_rate, 5);
Helmut Schaaa2fe8162011-10-11 18:08:54 +0200311 /* padding for tx flags */
312 pos += 2;
313 }
314
315 /* IEEE80211_RADIOTAP_TX_FLAGS */
316 txflags = 0;
317 if (!(info->flags & IEEE80211_TX_STAT_ACK) &&
318 !is_multicast_ether_addr(hdr->addr1))
Helmut Schaa9c8f2c42011-11-18 17:02:16 +0100319 txflags |= IEEE80211_RADIOTAP_F_TX_FAIL;
Helmut Schaaa2fe8162011-10-11 18:08:54 +0200320
Bob Copeland311ab8e2014-04-16 08:32:41 -0400321 if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
Helmut Schaa9c8f2c42011-11-18 17:02:16 +0100322 txflags |= IEEE80211_RADIOTAP_F_TX_CTS;
Bob Copeland311ab8e2014-04-16 08:32:41 -0400323 if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
Helmut Schaa9c8f2c42011-11-18 17:02:16 +0100324 txflags |= IEEE80211_RADIOTAP_F_TX_RTS;
Helmut Schaaa2fe8162011-10-11 18:08:54 +0200325
326 put_unaligned_le16(txflags, pos);
327 pos += 2;
328
329 /* IEEE80211_RADIOTAP_DATA_RETRIES */
330 /* for now report the total retry_count */
331 *pos = retry_count;
332 pos++;
Helmut Schaa7f2a5e22011-10-11 18:08:55 +0200333
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200334 if (status_rate && (status_rate->rate_idx.flags & RATE_INFO_FLAGS_MCS))
335 {
Kees Cook5cafd372021-08-06 14:51:12 -0700336 rthdr->it_present |= cpu_to_le32(BIT(IEEE80211_RADIOTAP_MCS));
John Crispin3d07ffc2019-07-14 17:44:16 +0200337 pos[0] = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
338 IEEE80211_RADIOTAP_MCS_HAVE_GI |
339 IEEE80211_RADIOTAP_MCS_HAVE_BW;
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200340 if (status_rate->rate_idx.flags & RATE_INFO_FLAGS_SHORT_GI)
John Crispin3d07ffc2019-07-14 17:44:16 +0200341 pos[1] |= IEEE80211_RADIOTAP_MCS_SGI;
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200342 if (status_rate->rate_idx.bw == RATE_INFO_BW_40)
John Crispin3d07ffc2019-07-14 17:44:16 +0200343 pos[1] |= IEEE80211_RADIOTAP_MCS_BW_40;
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200344 pos[2] = status_rate->rate_idx.mcs;
John Crispin3d07ffc2019-07-14 17:44:16 +0200345 pos += 3;
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200346 } else if (status_rate && (status_rate->rate_idx.flags &
347 RATE_INFO_FLAGS_VHT_MCS))
348 {
John Crispin3d07ffc2019-07-14 17:44:16 +0200349 u16 known = local->hw.radiotap_vht_details &
350 (IEEE80211_RADIOTAP_VHT_KNOWN_GI |
351 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH);
352
Kees Cook5cafd372021-08-06 14:51:12 -0700353 rthdr->it_present |= cpu_to_le32(BIT(IEEE80211_RADIOTAP_VHT));
John Crispin3d07ffc2019-07-14 17:44:16 +0200354
355 /* required alignment from rthdr */
356 pos = (u8 *)rthdr + ALIGN(pos - (u8 *)rthdr, 2);
357
358 /* u16 known - IEEE80211_RADIOTAP_VHT_KNOWN_* */
359 put_unaligned_le16(known, pos);
360 pos += 2;
361
362 /* u8 flags - IEEE80211_RADIOTAP_VHT_FLAG_* */
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200363 if (status_rate->rate_idx.flags & RATE_INFO_FLAGS_SHORT_GI)
John Crispin3d07ffc2019-07-14 17:44:16 +0200364 *pos |= IEEE80211_RADIOTAP_VHT_FLAG_SGI;
365 pos++;
366
367 /* u8 bandwidth */
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200368 switch (status_rate->rate_idx.bw) {
John Crispin3d07ffc2019-07-14 17:44:16 +0200369 case RATE_INFO_BW_160:
370 *pos = 11;
371 break;
372 case RATE_INFO_BW_80:
John Crispina027c3042019-08-07 09:59:48 +0200373 *pos = 4;
John Crispin3d07ffc2019-07-14 17:44:16 +0200374 break;
375 case RATE_INFO_BW_40:
376 *pos = 1;
377 break;
378 default:
379 *pos = 0;
380 break;
381 }
John Crispin3a00f082019-08-07 09:59:49 +0200382 pos++;
John Crispin3d07ffc2019-07-14 17:44:16 +0200383
384 /* u8 mcs_nss[4] */
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200385 *pos = (status_rate->rate_idx.mcs << 4) |
386 status_rate->rate_idx.nss;
John Crispin3d07ffc2019-07-14 17:44:16 +0200387 pos += 4;
388
389 /* u8 coding */
390 pos++;
391 /* u8 group_id */
392 pos++;
393 /* u16 partial_aid */
394 pos += 2;
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200395 } else if (status_rate && (status_rate->rate_idx.flags &
396 RATE_INFO_FLAGS_HE_MCS))
397 {
John Crispin3d07ffc2019-07-14 17:44:16 +0200398 struct ieee80211_radiotap_he *he;
399
Kees Cook5cafd372021-08-06 14:51:12 -0700400 rthdr->it_present |= cpu_to_le32(BIT(IEEE80211_RADIOTAP_HE));
John Crispin3d07ffc2019-07-14 17:44:16 +0200401
402 /* required alignment from rthdr */
403 pos = (u8 *)rthdr + ALIGN(pos - (u8 *)rthdr, 2);
404 he = (struct ieee80211_radiotap_he *)pos;
405
406 he->data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_SU |
407 IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN |
408 IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN |
409 IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN);
410
411 he->data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN);
412
413#define HE_PREP(f, val) le16_encode_bits(val, IEEE80211_RADIOTAP_HE_##f)
414
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200415 he->data6 |= HE_PREP(DATA6_NSTS, status_rate->rate_idx.nss);
John Crispin3d07ffc2019-07-14 17:44:16 +0200416
417#define CHECK_GI(s) \
418 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA5_GI_##s != \
419 (int)NL80211_RATE_INFO_HE_GI_##s)
420
421 CHECK_GI(0_8);
422 CHECK_GI(1_6);
423 CHECK_GI(3_2);
424
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200425 he->data3 |= HE_PREP(DATA3_DATA_MCS, status_rate->rate_idx.mcs);
426 he->data3 |= HE_PREP(DATA3_DATA_DCM, status_rate->rate_idx.he_dcm);
John Crispin3d07ffc2019-07-14 17:44:16 +0200427
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200428 he->data5 |= HE_PREP(DATA5_GI, status_rate->rate_idx.he_gi);
John Crispin3d07ffc2019-07-14 17:44:16 +0200429
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200430 switch (status_rate->rate_idx.bw) {
John Crispin3d07ffc2019-07-14 17:44:16 +0200431 case RATE_INFO_BW_20:
432 he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC,
433 IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_20MHZ);
434 break;
435 case RATE_INFO_BW_40:
436 he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC,
437 IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_40MHZ);
438 break;
439 case RATE_INFO_BW_80:
440 he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC,
441 IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_80MHZ);
442 break;
443 case RATE_INFO_BW_160:
444 he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC,
445 IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_160MHZ);
446 break;
447 case RATE_INFO_BW_HE_RU:
448#define CHECK_RU_ALLOC(s) \
449 BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_##s##T != \
450 NL80211_RATE_INFO_HE_RU_ALLOC_##s + 4)
451
452 CHECK_RU_ALLOC(26);
453 CHECK_RU_ALLOC(52);
454 CHECK_RU_ALLOC(106);
455 CHECK_RU_ALLOC(242);
456 CHECK_RU_ALLOC(484);
457 CHECK_RU_ALLOC(996);
458 CHECK_RU_ALLOC(2x996);
459
460 he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC,
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200461 status_rate->rate_idx.he_ru_alloc + 4);
John Crispin3d07ffc2019-07-14 17:44:16 +0200462 break;
463 default:
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200464 WARN_ONCE(1, "Invalid SU BW %d\n", status_rate->rate_idx.bw);
John Crispin3d07ffc2019-07-14 17:44:16 +0200465 }
466
467 pos += sizeof(struct ieee80211_radiotap_he);
468 }
469
Jonas Jelonek44fa75f2022-05-09 19:39:57 +0200470 if (status_rate || info->status.rates[0].idx < 0)
Karl Beldana8241312013-07-27 11:47:04 +0200471 return;
472
473 /* IEEE80211_RADIOTAP_MCS
474 * IEEE80211_RADIOTAP_VHT */
475 if (info->status.rates[0].flags & IEEE80211_TX_RC_MCS) {
Kees Cook5cafd372021-08-06 14:51:12 -0700476 rthdr->it_present |= cpu_to_le32(BIT(IEEE80211_RADIOTAP_MCS));
Helmut Schaa7f2a5e22011-10-11 18:08:55 +0200477 pos[0] = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
478 IEEE80211_RADIOTAP_MCS_HAVE_GI |
479 IEEE80211_RADIOTAP_MCS_HAVE_BW;
480 if (info->status.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
481 pos[1] |= IEEE80211_RADIOTAP_MCS_SGI;
482 if (info->status.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
483 pos[1] |= IEEE80211_RADIOTAP_MCS_BW_40;
484 if (info->status.rates[0].flags & IEEE80211_TX_RC_GREEN_FIELD)
485 pos[1] |= IEEE80211_RADIOTAP_MCS_FMT_GF;
486 pos[2] = info->status.rates[0].idx;
487 pos += 3;
Karl Beldana8241312013-07-27 11:47:04 +0200488 } else if (info->status.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
489 u16 known = local->hw.radiotap_vht_details &
490 (IEEE80211_RADIOTAP_VHT_KNOWN_GI |
491 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH);
Helmut Schaa7f2a5e22011-10-11 18:08:55 +0200492
Kees Cook5cafd372021-08-06 14:51:12 -0700493 rthdr->it_present |= cpu_to_le32(BIT(IEEE80211_RADIOTAP_VHT));
Karl Beldana8241312013-07-27 11:47:04 +0200494
495 /* required alignment from rthdr */
496 pos = (u8 *)rthdr + ALIGN(pos - (u8 *)rthdr, 2);
497
498 /* u16 known - IEEE80211_RADIOTAP_VHT_KNOWN_* */
499 put_unaligned_le16(known, pos);
500 pos += 2;
501
502 /* u8 flags - IEEE80211_RADIOTAP_VHT_FLAG_* */
503 if (info->status.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
504 *pos |= IEEE80211_RADIOTAP_VHT_FLAG_SGI;
505 pos++;
506
507 /* u8 bandwidth */
508 if (info->status.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
509 *pos = 1;
510 else if (info->status.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
511 *pos = 4;
512 else if (info->status.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
513 *pos = 11;
514 else /* IEEE80211_TX_RC_{20_MHZ_WIDTH,FIXME:DUP_DATA} */
515 *pos = 0;
516 pos++;
517
518 /* u8 mcs_nss[4] */
519 *pos = (ieee80211_rate_get_vht_mcs(&info->status.rates[0]) << 4) |
520 ieee80211_rate_get_vht_nss(&info->status.rates[0]);
521 pos += 4;
522
523 /* u8 coding */
524 pos++;
525 /* u8 group_id */
526 pos++;
527 /* u16 partial_aid */
528 pos += 2;
529 }
Helmut Schaaa2fe8162011-10-11 18:08:54 +0200530}
531
Liad Kaufman1277b4a2014-11-09 18:50:08 +0200532/*
533 * Handles the tx for TDLS teardown frames.
534 * If the frame wasn't ACKed by the peer - it will be re-sent through the AP
535 */
536static void ieee80211_tdls_td_tx_handle(struct ieee80211_local *local,
537 struct ieee80211_sub_if_data *sdata,
538 struct sk_buff *skb, u32 flags)
539{
540 struct sk_buff *teardown_skb;
541 struct sk_buff *orig_teardown_skb;
542 bool is_teardown = false;
543
544 /* Get the teardown data we need and free the lock */
545 spin_lock(&sdata->u.mgd.teardown_lock);
546 teardown_skb = sdata->u.mgd.teardown_skb;
547 orig_teardown_skb = sdata->u.mgd.orig_teardown_skb;
548 if ((skb == orig_teardown_skb) && teardown_skb) {
549 sdata->u.mgd.teardown_skb = NULL;
550 sdata->u.mgd.orig_teardown_skb = NULL;
551 is_teardown = true;
552 }
553 spin_unlock(&sdata->u.mgd.teardown_lock);
554
555 if (is_teardown) {
556 /* This mechanism relies on being able to get ACKs */
Johannes Berg30686bf2015-06-02 21:39:54 +0200557 WARN_ON(!ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS));
Liad Kaufman1277b4a2014-11-09 18:50:08 +0200558
559 /* Check if peer has ACKed */
560 if (flags & IEEE80211_TX_STAT_ACK) {
561 dev_kfree_skb_any(teardown_skb);
562 } else {
563 tdls_dbg(sdata,
564 "TDLS Resending teardown through AP\n");
565
566 ieee80211_subif_start_xmit(teardown_skb, skb->dev);
567 }
568 }
569}
570
Johannes Bergb2eb0ee2015-06-01 22:54:13 +0200571static struct ieee80211_sub_if_data *
572ieee80211_sdata_from_skb(struct ieee80211_local *local, struct sk_buff *skb)
573{
574 struct ieee80211_sub_if_data *sdata;
575
576 if (skb->dev) {
577 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
578 if (!sdata->dev)
579 continue;
580
581 if (skb->dev == sdata->dev)
582 return sdata;
583 }
584
585 return NULL;
586 }
587
588 return rcu_dereference(local->p2p_sdata);
589}
590
591static void ieee80211_report_ack_skb(struct ieee80211_local *local,
Avraham Sternf9202632022-01-26 11:15:31 +0200592 struct sk_buff *orig_skb,
593 bool acked, bool dropped,
594 ktime_t ack_hwtstamp)
Johannes Bergb2eb0ee2015-06-01 22:54:13 +0200595{
Avraham Sternf9202632022-01-26 11:15:31 +0200596 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(orig_skb);
Johannes Bergb2eb0ee2015-06-01 22:54:13 +0200597 struct sk_buff *skb;
598 unsigned long flags;
599
600 spin_lock_irqsave(&local->ack_status_lock, flags);
Johannes Bergf498f6a2023-08-28 15:09:24 +0200601 skb = idr_remove(&local->ack_status_frames, info->status_data);
Johannes Bergb2eb0ee2015-06-01 22:54:13 +0200602 spin_unlock_irqrestore(&local->ack_status_lock, flags);
603
604 if (!skb)
605 return;
606
Johannes Bergb2eb0ee2015-06-01 22:54:13 +0200607 if (info->flags & IEEE80211_TX_INTFL_NL80211_FRAME_TX) {
Johannes Berg3b79af92015-06-01 23:14:59 +0200608 u64 cookie = IEEE80211_SKB_CB(skb)->ack.cookie;
Johannes Bergb2eb0ee2015-06-01 22:54:13 +0200609 struct ieee80211_sub_if_data *sdata;
Johannes Berg3b79af92015-06-01 23:14:59 +0200610 struct ieee80211_hdr *hdr = (void *)skb->data;
Avraham Sternea5907d2022-02-02 10:49:47 +0200611 bool is_valid_ack_signal =
612 !!(info->status.flags & IEEE80211_TX_STATUS_ACK_SIGNAL_VALID);
Avraham Sternf9202632022-01-26 11:15:31 +0200613 struct cfg80211_tx_status status = {
614 .cookie = cookie,
615 .buf = skb->data,
616 .len = skb->len,
617 .ack = acked,
618 };
619
620 if (ieee80211_is_timing_measurement(orig_skb) ||
621 ieee80211_is_ftm(orig_skb)) {
622 status.tx_tstamp =
623 ktime_to_ns(skb_hwtstamps(orig_skb)->hwtstamp);
624 status.ack_tstamp = ktime_to_ns(ack_hwtstamp);
625 }
Johannes Bergb2eb0ee2015-06-01 22:54:13 +0200626
627 rcu_read_lock();
628 sdata = ieee80211_sdata_from_skb(local, skb);
Johannes Berg3b79af92015-06-01 23:14:59 +0200629 if (sdata) {
Markus Theil10cb8e62021-02-06 12:51:12 +0100630 if (skb->protocol == sdata->control_port_protocol ||
631 skb->protocol == cpu_to_be16(ETH_P_PREAUTH))
Markus Theil86a1b9d72020-06-22 14:35:42 +0200632 cfg80211_control_port_tx_status(&sdata->wdev,
633 cookie,
634 skb->data,
635 skb->len,
636 acked,
637 GFP_ATOMIC);
638 else if (ieee80211_is_any_nullfunc(hdr->frame_control))
Johannes Berg3b79af92015-06-01 23:14:59 +0200639 cfg80211_probe_status(sdata->dev, hdr->addr1,
Venkateswara Naralasettya78b26f2018-02-13 11:04:46 +0530640 cookie, acked,
641 info->status.ack_signal,
Avraham Sternea5907d2022-02-02 10:49:47 +0200642 is_valid_ack_signal,
Johannes Berg3b79af92015-06-01 23:14:59 +0200643 GFP_ATOMIC);
Markus Theila7528192020-05-27 18:03:34 +0200644 else if (ieee80211_is_mgmt(hdr->frame_control))
Avraham Sternf9202632022-01-26 11:15:31 +0200645 cfg80211_mgmt_tx_status_ext(&sdata->wdev,
646 &status,
647 GFP_ATOMIC);
Markus Theila7528192020-05-27 18:03:34 +0200648 else
Markus Theil86a1b9d72020-06-22 14:35:42 +0200649 pr_warn("Unknown status report in ack skb\n");
650
Johannes Berg3b79af92015-06-01 23:14:59 +0200651 }
Johannes Bergb2eb0ee2015-06-01 22:54:13 +0200652 rcu_read_unlock();
653
654 dev_kfree_skb_any(skb);
Andrei Otcheretianski86822502018-09-05 08:06:13 +0300655 } else if (dropped) {
656 dev_kfree_skb_any(skb);
Johannes Bergb2eb0ee2015-06-01 22:54:13 +0200657 } else {
658 /* consumes skb */
659 skb_complete_wifi_ack(skb, acked);
660 }
661}
662
Johannes Berge3640a82023-08-28 15:09:26 +0200663static void ieee80211_handle_smps_status(struct ieee80211_sub_if_data *sdata,
664 bool acked, u16 status_data)
665{
666 u16 sub_data = u16_get_bits(status_data, IEEE80211_STATUS_SUBDATA_MASK);
667 enum ieee80211_smps_mode smps_mode = sub_data & 3;
668 int link_id = (sub_data >> 2);
669 struct ieee80211_link_data *link;
670
671 if (!sdata || !ieee80211_sdata_running(sdata))
672 return;
673
674 if (!acked)
675 return;
676
677 if (sdata->vif.type != NL80211_IFTYPE_STATION)
678 return;
679
680 if (WARN(link_id >= ARRAY_SIZE(sdata->link),
681 "bad SMPS status link: %d\n", link_id))
682 return;
683
684 link = rcu_dereference(sdata->link[link_id]);
685 if (!link)
686 return;
687
688 /*
689 * This update looks racy, but isn't, the only other place
690 * updating this variable is in managed mode before assoc,
691 * and we have to be associated to have a status from the
692 * action frame TX, since we cannot send it while we're not
693 * associated yet.
694 */
695 link->smps_mode = smps_mode;
696 wiphy_work_queue(sdata->local->hw.wiphy, &link->u.mgd.recalc_smps);
697}
698
Ayala Bekera17a58a2024-03-18 18:53:31 +0200699static void
700ieee80211_handle_teardown_ttlm_status(struct ieee80211_sub_if_data *sdata,
701 bool acked)
702{
703 if (!sdata || !ieee80211_sdata_running(sdata))
704 return;
705
706 if (!acked)
707 return;
708
709 if (sdata->vif.type != NL80211_IFTYPE_STATION)
710 return;
711
712 wiphy_work_queue(sdata->local->hw.wiphy,
713 &sdata->u.mgd.teardown_ttlm_work);
714}
715
Johannes Berg8a2fbed2012-10-26 15:53:06 +0200716static void ieee80211_report_used_skb(struct ieee80211_local *local,
Avraham Sternf9202632022-01-26 11:15:31 +0200717 struct sk_buff *skb, bool dropped,
718 ktime_t ack_hwtstamp)
Johannes Berg8a2fbed2012-10-26 15:53:06 +0200719{
720 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
Toke Høiland-Jørgensen7a892332019-11-18 22:06:10 -0800721 u16 tx_time_est = ieee80211_info_get_tx_time_est(info);
Johannes Berg8a2fbed2012-10-26 15:53:06 +0200722 struct ieee80211_hdr *hdr = (void *)skb->data;
723 bool acked = info->flags & IEEE80211_TX_STAT_ACK;
724
725 if (dropped)
726 acked = false;
727
Toke Høiland-Jørgensen7a892332019-11-18 22:06:10 -0800728 if (tx_time_est) {
729 struct sta_info *sta;
730
731 rcu_read_lock();
732
733 sta = sta_info_get_by_addrs(local, hdr->addr1, hdr->addr2);
734 ieee80211_sta_update_pending_airtime(local, sta,
735 skb_get_queue_mapping(skb),
736 tx_time_est,
737 true);
738 rcu_read_unlock();
739 }
740
Johannes Berg3b79af92015-06-01 23:14:59 +0200741 if (info->flags & IEEE80211_TX_INTFL_MLME_CONN_TX) {
Johannes Bergb2eb0ee2015-06-01 22:54:13 +0200742 struct ieee80211_sub_if_data *sdata;
Johannes Berg8a2fbed2012-10-26 15:53:06 +0200743
744 rcu_read_lock();
745
Johannes Bergb2eb0ee2015-06-01 22:54:13 +0200746 sdata = ieee80211_sdata_from_skb(local, skb);
Johannes Berg8a2fbed2012-10-26 15:53:06 +0200747
Johannes Berg1672c0e32013-01-29 15:02:27 +0100748 if (!sdata) {
Johannes Berg8a2fbed2012-10-26 15:53:06 +0200749 skb->dev = NULL;
Alexander Wetzelb7ce33d2022-09-15 14:41:20 +0200750 } else if (!dropped) {
Liad Kaufman1277b4a2014-11-09 18:50:08 +0200751 /* Check to see if packet is a TDLS teardown packet */
752 if (ieee80211_is_data(hdr->frame_control) &&
Dmitry Antipov89141f92023-10-04 18:30:29 +0300753 (ieee80211_get_tdls_action(skb) ==
Lorenzo Bianconif5a4c242021-08-23 20:02:39 +0200754 WLAN_TDLS_TEARDOWN)) {
Liad Kaufman1277b4a2014-11-09 18:50:08 +0200755 ieee80211_tdls_td_tx_handle(local, sdata, skb,
756 info->flags);
Lorenzo Bianconif5a4c242021-08-23 20:02:39 +0200757 } else if (ieee80211_s1g_is_twt_setup(skb)) {
758 if (!acked) {
759 struct sk_buff *qskb;
760
761 qskb = skb_clone(skb, GFP_ATOMIC);
762 if (qskb) {
763 skb_queue_tail(&sdata->status_queue,
764 qskb);
Johannes Berg16114492023-06-06 14:49:26 +0200765 wiphy_work_queue(local->hw.wiphy,
766 &sdata->work);
Lorenzo Bianconif5a4c242021-08-23 20:02:39 +0200767 }
768 }
769 } else {
Liad Kaufman1277b4a2014-11-09 18:50:08 +0200770 ieee80211_mgd_conn_tx_status(sdata,
771 hdr->frame_control,
772 acked);
Lorenzo Bianconif5a4c242021-08-23 20:02:39 +0200773 }
Johannes Berg8a2fbed2012-10-26 15:53:06 +0200774 }
775
776 rcu_read_unlock();
Johannes Bergf498f6a2023-08-28 15:09:24 +0200777 } else if (info->status_data_idr) {
Avraham Sternf9202632022-01-26 11:15:31 +0200778 ieee80211_report_ack_skb(local, skb, acked, dropped,
779 ack_hwtstamp);
Johannes Berge3640a82023-08-28 15:09:26 +0200780 } else if (info->status_data) {
781 struct ieee80211_sub_if_data *sdata;
782
783 rcu_read_lock();
784
785 sdata = ieee80211_sdata_from_skb(local, skb);
786
787 switch (u16_get_bits(info->status_data,
788 IEEE80211_STATUS_TYPE_MASK)) {
789 case IEEE80211_STATUS_TYPE_SMPS:
790 ieee80211_handle_smps_status(sdata, acked,
791 info->status_data);
792 break;
Ayala Bekera17a58a2024-03-18 18:53:31 +0200793 case IEEE80211_STATUS_TYPE_NEG_TTLM:
794 ieee80211_handle_teardown_ttlm_status(sdata, acked);
795 break;
Johannes Berge3640a82023-08-28 15:09:26 +0200796 }
797 rcu_read_unlock();
Johannes Berg8a2fbed2012-10-26 15:53:06 +0200798 }
Johannes Berg2cc6f5a2016-10-19 15:02:32 +0200799
800 if (!dropped && skb->destructor) {
801 skb->wifi_acked_valid = 1;
802 skb->wifi_acked = acked;
803 }
Bjorn Andersson5d473fe2017-05-27 14:59:27 -0700804
805 ieee80211_led_tx(local);
Sara Sharon34b1e0e2018-12-15 11:03:06 +0200806
807 if (skb_has_frag_list(skb)) {
808 kfree_skb_list(skb_shinfo(skb)->frag_list);
809 skb_shinfo(skb)->frag_list = NULL;
810 }
Johannes Berg8a2fbed2012-10-26 15:53:06 +0200811}
812
Johannes Berg99ba2a12010-11-24 08:10:06 +0100813/*
814 * Use a static threshold for now, best value to be determined
815 * by testing ...
816 * Should it depend on:
817 * - on # of retransmissions
818 * - current throughput (higher value for higher tpt)?
819 */
820#define STA_LOST_PKT_THRESHOLD 50
Felix Fietkau47df8e02020-08-08 19:25:42 +0200821#define STA_LOST_PKT_TIME HZ /* 1 sec since last ACK */
Liad Kaufman9d58f252014-09-04 08:28:40 +0300822#define STA_LOST_TDLS_PKT_TIME (10*HZ) /* 10secs since last ACK */
Johannes Berg99ba2a12010-11-24 08:10:06 +0100823
Felix Fietkauad9dda62014-11-19 20:08:11 +0100824static void ieee80211_lost_packet(struct sta_info *sta,
825 struct ieee80211_tx_info *info)
Felix Fietkauabd43a62014-05-23 20:05:28 +0200826{
Felix Fietkau47df8e02020-08-08 19:25:42 +0200827 unsigned long pkt_time = STA_LOST_PKT_TIME;
828 unsigned int pkt_thr = STA_LOST_PKT_THRESHOLD;
829
Rajkumar Manoharane8a24cd2016-09-14 12:48:32 +0530830 /* If driver relies on its own algorithm for station kickout, skip
831 * mac80211 packet loss mechanism.
832 */
833 if (ieee80211_hw_check(&sta->local->hw, REPORTS_LOW_ACK))
834 return;
835
Felix Fietkauabd43a62014-05-23 20:05:28 +0200836 /* This packet was aggregated but doesn't carry status info */
837 if ((info->flags & IEEE80211_TX_CTL_AMPDU) &&
838 !(info->flags & IEEE80211_TX_STAT_AMPDU))
839 return;
840
Sriram R046d2e72022-04-04 21:11:23 +0530841 sta->deflink.status_stats.lost_packets++;
Felix Fietkau47df8e02020-08-08 19:25:42 +0200842 if (sta->sta.tdls) {
843 pkt_time = STA_LOST_TDLS_PKT_TIME;
844 pkt_thr = STA_LOST_PKT_THRESHOLD;
845 }
Liad Kaufman9d58f252014-09-04 08:28:40 +0300846
847 /*
Johannes Berg453a2a82022-02-02 10:49:45 +0200848 * If we're in TDLS mode, make sure that all STA_LOST_PKT_THRESHOLD
Liad Kaufman9d58f252014-09-04 08:28:40 +0300849 * of the last packets were lost, and that no ACK was received in the
850 * last STA_LOST_TDLS_PKT_TIME ms, before triggering the CQM packet-loss
851 * mechanism.
Felix Fietkau47df8e02020-08-08 19:25:42 +0200852 * For non-TDLS, use STA_LOST_PKT_THRESHOLD and STA_LOST_PKT_TIME
Liad Kaufman9d58f252014-09-04 08:28:40 +0300853 */
Sriram R046d2e72022-04-04 21:11:23 +0530854 if (sta->deflink.status_stats.lost_packets < pkt_thr ||
855 !time_after(jiffies, sta->deflink.status_stats.last_pkt_time + pkt_time))
Felix Fietkauabd43a62014-05-23 20:05:28 +0200856 return;
857
858 cfg80211_cqm_pktloss_notify(sta->sdata->dev, sta->sta.addr,
Sriram R046d2e72022-04-04 21:11:23 +0530859 sta->deflink.status_stats.lost_packets,
860 GFP_ATOMIC);
861 sta->deflink.status_stats.lost_packets = 0;
Felix Fietkauabd43a62014-05-23 20:05:28 +0200862}
863
Felix Fietkau7e1cdcb2014-11-19 20:08:12 +0100864static int ieee80211_tx_get_rates(struct ieee80211_hw *hw,
865 struct ieee80211_tx_info *info,
866 int *retry_count)
Johannes Bergfe7a5d52009-11-18 18:42:47 +0100867{
Felix Fietkau7e1cdcb2014-11-19 20:08:12 +0100868 int count = -1;
869 int i;
Johannes Bergfe7a5d52009-11-18 18:42:47 +0100870
871 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
Lorenzo Bianconid01b3162012-04-06 20:48:15 +0200872 if ((info->flags & IEEE80211_TX_CTL_AMPDU) &&
873 !(info->flags & IEEE80211_TX_STAT_AMPDU)) {
874 /* just the first aggr frame carry status info */
875 info->status.rates[i].idx = -1;
876 info->status.rates[i].count = 0;
877 break;
878 } else if (info->status.rates[i].idx < 0) {
Helmut Schaabe7974a2011-03-21 15:07:55 +0100879 break;
880 } else if (i >= hw->max_report_rates) {
881 /* the HW cannot have attempted that rate */
Johannes Bergfe7a5d52009-11-18 18:42:47 +0100882 info->status.rates[i].idx = -1;
883 info->status.rates[i].count = 0;
Helmut Schaabe7974a2011-03-21 15:07:55 +0100884 break;
Johannes Bergfe7a5d52009-11-18 18:42:47 +0100885 }
886
Felix Fietkau7e1cdcb2014-11-19 20:08:12 +0100887 count += info->status.rates[i].count;
Johannes Bergfe7a5d52009-11-18 18:42:47 +0100888 }
Helmut Schaabe7974a2011-03-21 15:07:55 +0100889
Felix Fietkau7e1cdcb2014-11-19 20:08:12 +0100890 if (count < 0)
891 count = 0;
892
893 *retry_count = count;
Colin Ian Kingf2a0c182020-07-22 16:38:30 +0100894 return i - 1;
Felix Fietkau7e1cdcb2014-11-19 20:08:12 +0100895}
896
Helmut Schaa4dc792b2015-09-02 13:23:30 +0200897void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb,
Johannes Berg2400dfe2023-08-29 12:17:44 +0200898 int retry_count, bool send_to_cooked,
John Crispinb7b2e8c2019-07-14 17:44:15 +0200899 struct ieee80211_tx_status *status)
Felix Fietkau7e1cdcb2014-11-19 20:08:12 +0100900{
901 struct sk_buff *skb2;
Helmut Schaa4dc792b2015-09-02 13:23:30 +0200902 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
903 struct ieee80211_sub_if_data *sdata;
904 struct net_device *prev_dev = NULL;
905 int rtap_len;
906
907 /* send frame to monitor interfaces now */
John Crispin3d07ffc2019-07-14 17:44:16 +0200908 rtap_len = ieee80211_tx_radiotap_len(info, status);
Helmut Schaa4dc792b2015-09-02 13:23:30 +0200909 if (WARN_ON_ONCE(skb_headroom(skb) < rtap_len)) {
910 pr_err("ieee80211_tx_status: headroom too small\n");
911 dev_kfree_skb(skb);
912 return;
913 }
Johannes Berge5c0ee02022-06-01 14:16:00 +0200914 ieee80211_add_tx_radiotap_header(local, skb, retry_count,
Johannes Berg2400dfe2023-08-29 12:17:44 +0200915 rtap_len, status);
Helmut Schaa4dc792b2015-09-02 13:23:30 +0200916
917 /* XXX: is this sufficient for BPF? */
Zhang Shengjud57a5442016-03-03 01:16:56 +0000918 skb_reset_mac_header(skb);
Helmut Schaa4dc792b2015-09-02 13:23:30 +0200919 skb->ip_summed = CHECKSUM_UNNECESSARY;
920 skb->pkt_type = PACKET_OTHERHOST;
921 skb->protocol = htons(ETH_P_802_2);
922 memset(skb->cb, 0, sizeof(skb->cb));
923
924 rcu_read_lock();
925 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
926 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
927 if (!ieee80211_sdata_running(sdata))
928 continue;
929
Aviya Erenfeldd8212182016-08-29 23:25:15 +0300930 if ((sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) &&
Helmut Schaa4dc792b2015-09-02 13:23:30 +0200931 !send_to_cooked)
932 continue;
933
934 if (prev_dev) {
935 skb2 = skb_clone(skb, GFP_ATOMIC);
936 if (skb2) {
937 skb2->dev = prev_dev;
938 netif_rx(skb2);
939 }
940 }
941
942 prev_dev = sdata->dev;
943 }
944 }
945 if (prev_dev) {
946 skb->dev = prev_dev;
947 netif_rx(skb);
948 skb = NULL;
949 }
950 rcu_read_unlock();
951 dev_kfree_skb(skb);
952}
953
Felix Fietkau5fe49a92017-04-26 17:11:37 +0200954static void __ieee80211_tx_status(struct ieee80211_hw *hw,
Felix Fietkau33181112020-09-08 14:36:54 +0200955 struct ieee80211_tx_status *status,
956 int rates_idx, int retry_count)
Helmut Schaa4dc792b2015-09-02 13:23:30 +0200957{
Felix Fietkau5fe49a92017-04-26 17:11:37 +0200958 struct sk_buff *skb = status->skb;
Felix Fietkau7e1cdcb2014-11-19 20:08:12 +0100959 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
960 struct ieee80211_local *local = hw_to_local(hw);
Felix Fietkau5fe49a92017-04-26 17:11:37 +0200961 struct ieee80211_tx_info *info = status->info;
962 struct sta_info *sta;
Felix Fietkau7e1cdcb2014-11-19 20:08:12 +0100963 __le16 fc;
Felix Fietkau7e1cdcb2014-11-19 20:08:12 +0100964 bool send_to_cooked;
965 bool acked;
Markus Theil5972fa12019-12-18 15:27:36 +0100966 bool noack_success;
Felix Fietkau7e1cdcb2014-11-19 20:08:12 +0100967 struct ieee80211_bar *bar;
Johannes Berg5e06a9e2015-01-16 13:27:56 +0100968 int tid = IEEE80211_NUM_TIDS;
Felix Fietkau7e1cdcb2014-11-19 20:08:12 +0100969
Vivek Natarajan375177b2010-02-09 14:50:28 +0530970 fc = hdr->frame_control;
Johannes Bergfe7a5d52009-11-18 18:42:47 +0100971
Felix Fietkau5fe49a92017-04-26 17:11:37 +0200972 if (status->sta) {
973 sta = container_of(status->sta, struct sta_info, sta);
Simon Wunderlich2103dec2013-07-08 16:55:53 +0200974
Johannes Berg47086fc2011-09-29 16:04:33 +0200975 if (info->flags & IEEE80211_TX_STATUS_EOSP)
Johannes Bergc2c98fd2011-09-29 16:04:36 +0200976 clear_sta_flag(sta, WLAN_STA_SP);
Johannes Berg47086fc2011-09-29 16:04:33 +0200977
Felix Fietkau04ac3c02010-12-02 21:01:08 +0100978 acked = !!(info->flags & IEEE80211_TX_STAT_ACK);
Markus Theil5972fa12019-12-18 15:27:36 +0100979 noack_success = !!(info->flags &
980 IEEE80211_TX_STAT_NOACK_TRANSMITTED);
Masashi Honma71f2c342016-08-02 17:16:57 +0900981
982 /* mesh Peer Service Period support */
983 if (ieee80211_vif_is_mesh(&sta->sdata->vif) &&
984 ieee80211_is_data_qos(fc))
985 ieee80211_mpsp_trigger_process(
986 ieee80211_get_qos_ctl(hdr), sta, true, acked);
987
Johannes Berg30686bf2015-06-02 21:39:54 +0200988 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL) &&
Chun-Yeow Yeoh00a9a6d2014-04-02 12:05:09 +0800989 (ieee80211_is_data(hdr->frame_control)) &&
Juuso Oikarinen0c869802010-04-22 10:27:48 +0300990 (rates_idx != -1))
Sriram R046d2e72022-04-04 21:11:23 +0530991 sta->deflink.tx_stats.last_rate =
Johannes Berge5a9f8d2015-10-16 17:54:47 +0200992 info->status.rates[rates_idx];
Juuso Oikarinen0c869802010-04-22 10:27:48 +0300993
Johannes Bergfe7a5d52009-11-18 18:42:47 +0100994 if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) &&
995 (ieee80211_is_data_qos(fc))) {
Johannes Berg79c892b2014-11-21 14:26:31 +0100996 u16 ssn;
Johannes Bergfe7a5d52009-11-18 18:42:47 +0100997 u8 *qc;
998
999 qc = ieee80211_get_qos_ctl(hdr);
1000 tid = qc[0] & 0xf;
1001 ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10)
1002 & IEEE80211_SCTL_SEQ);
Felix Fietkau8c771242011-08-20 15:53:55 +02001003 ieee80211_send_bar(&sta->sdata->vif, hdr->addr1,
Johannes Bergfe7a5d52009-11-18 18:42:47 +01001004 tid, ssn);
Johannes Berg79c892b2014-11-21 14:26:31 +01001005 } else if (ieee80211_is_data_qos(fc)) {
1006 u8 *qc = ieee80211_get_qos_ctl(hdr);
1007
1008 tid = qc[0] & 0xf;
Johannes Bergfe7a5d52009-11-18 18:42:47 +01001009 }
1010
Helmut Schaae69dede2011-08-11 16:17:42 +02001011 if (!acked && ieee80211_is_back_req(fc)) {
Johannes Berg79c892b2014-11-21 14:26:31 +01001012 u16 control;
Felix Fietkau71076762011-09-15 09:37:46 +02001013
Helmut Schaae69dede2011-08-11 16:17:42 +02001014 /*
Felix Fietkau71076762011-09-15 09:37:46 +02001015 * BAR failed, store the last SSN and retry sending
1016 * the BAR when the next unicast transmission on the
1017 * same TID succeeds.
Helmut Schaae69dede2011-08-11 16:17:42 +02001018 */
1019 bar = (struct ieee80211_bar *) skb->data;
Felix Fietkau71076762011-09-15 09:37:46 +02001020 control = le16_to_cpu(bar->control);
1021 if (!(control & IEEE80211_BAR_CTRL_MULTI_TID)) {
Felix Fietkauf0425be2011-08-28 21:11:01 +02001022 u16 ssn = le16_to_cpu(bar->start_seq_num);
1023
Felix Fietkau71076762011-09-15 09:37:46 +02001024 tid = (control &
Helmut Schaae69dede2011-08-11 16:17:42 +02001025 IEEE80211_BAR_CTRL_TID_INFO_MASK) >>
1026 IEEE80211_BAR_CTRL_TID_INFO_SHIFT;
Felix Fietkauf0425be2011-08-28 21:11:01 +02001027
Stanislaw Gruszka8df6b7b2013-01-28 14:42:30 +01001028 ieee80211_set_bar_pending(sta, tid, ssn);
Helmut Schaae69dede2011-08-11 16:17:42 +02001029 }
1030 }
1031
Johannes Bergfe7a5d52009-11-18 18:42:47 +01001032 if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) {
1033 ieee80211_handle_filtered_frame(local, sta, skb);
Johannes Bergfe7a5d52009-11-18 18:42:47 +01001034 return;
Felix Fietkau33181112020-09-08 14:36:54 +02001035 } else if (ieee80211_is_data_present(fc)) {
Markus Theil5972fa12019-12-18 15:27:36 +01001036 if (!acked && !noack_success)
Sriram R046d2e72022-04-04 21:11:23 +05301037 sta->deflink.status_stats.msdu_failed[tid]++;
Johannes Berg79c892b2014-11-21 14:26:31 +01001038
Sriram R046d2e72022-04-04 21:11:23 +05301039 sta->deflink.status_stats.msdu_retries[tid] +=
Felix Fietkau33181112020-09-08 14:36:54 +02001040 retry_count;
Johannes Bergfe7a5d52009-11-18 18:42:47 +01001041 }
1042
Felix Fietkau04ac3c02010-12-02 21:01:08 +01001043 if (!(info->flags & IEEE80211_TX_CTL_INJECTED) && acked)
Johannes Berg0f782312009-12-01 13:37:02 +01001044 ieee80211_frame_acked(sta, skb);
Johannes Berg99ba2a12010-11-24 08:10:06 +01001045
Johannes Bergfe7a5d52009-11-18 18:42:47 +01001046 }
1047
Johannes Bergfe7a5d52009-11-18 18:42:47 +01001048 /* SNMP counters
1049 * Fragments are passed to low-level drivers as separate skbs, so these
1050 * are actually fragments, not frames. Update frame counters only for
1051 * the first fragment of the frame. */
Sujith Manoharan5cf16612014-12-10 21:26:11 +05301052 if ((info->flags & IEEE80211_TX_STAT_ACK) ||
1053 (info->flags & IEEE80211_TX_STAT_NOACK_TRANSMITTED)) {
Helmut Schaaadf5ace52011-12-08 13:11:55 +01001054 if (ieee80211_is_first_frag(hdr->seq_ctrl)) {
Johannes Bergc206ca62015-04-22 20:47:28 +02001055 I802_DEBUG_INC(local->dot11TransmittedFrameCount);
Eliad Peller85b89af2014-12-21 15:25:28 +02001056 if (is_multicast_ether_addr(ieee80211_get_DA(hdr)))
Johannes Bergc206ca62015-04-22 20:47:28 +02001057 I802_DEBUG_INC(local->dot11MulticastTransmittedFrameCount);
Johannes Bergfe7a5d52009-11-18 18:42:47 +01001058 if (retry_count > 0)
Johannes Bergc206ca62015-04-22 20:47:28 +02001059 I802_DEBUG_INC(local->dot11RetryCount);
Johannes Bergfe7a5d52009-11-18 18:42:47 +01001060 if (retry_count > 1)
Johannes Bergc206ca62015-04-22 20:47:28 +02001061 I802_DEBUG_INC(local->dot11MultipleRetryCount);
Johannes Bergfe7a5d52009-11-18 18:42:47 +01001062 }
1063
1064 /* This counter shall be incremented for an acknowledged MPDU
1065 * with an individual address in the address 1 field or an MPDU
1066 * with a multicast address in the address 1 field of type Data
1067 * or Management. */
1068 if (!is_multicast_ether_addr(hdr->addr1) ||
Helmut Schaaadf5ace52011-12-08 13:11:55 +01001069 ieee80211_is_data(fc) ||
1070 ieee80211_is_mgmt(fc))
Johannes Bergc206ca62015-04-22 20:47:28 +02001071 I802_DEBUG_INC(local->dot11TransmittedFragmentCount);
Johannes Bergfe7a5d52009-11-18 18:42:47 +01001072 } else {
Helmut Schaaadf5ace52011-12-08 13:11:55 +01001073 if (ieee80211_is_first_frag(hdr->seq_ctrl))
Johannes Bergc206ca62015-04-22 20:47:28 +02001074 I802_DEBUG_INC(local->dot11FailedCount);
Johannes Bergfe7a5d52009-11-18 18:42:47 +01001075 }
1076
Thomas Pedersen30b2f0b2020-01-13 21:59:40 -08001077 if (ieee80211_is_any_nullfunc(fc) &&
Thomas Pedersen08a5bdd2019-11-18 21:35:38 -08001078 ieee80211_has_pm(fc) &&
Johannes Berg30686bf2015-06-02 21:39:54 +02001079 ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) &&
Vivek Natarajan375177b2010-02-09 14:50:28 +05301080 !(info->flags & IEEE80211_TX_CTL_INJECTED) &&
1081 local->ps_sdata && !(local->scanning)) {
Bassem Dawood6e899fa2021-02-27 16:58:15 +11001082 if (info->flags & IEEE80211_TX_STAT_ACK)
Vivek Natarajan375177b2010-02-09 14:50:28 +05301083 local->ps_sdata->u.mgd.flags |=
1084 IEEE80211_STA_NULLFUNC_ACKED;
Bassem Dawood6e899fa2021-02-27 16:58:15 +11001085 mod_timer(&local->dynamic_ps_timer,
1086 jiffies + msecs_to_jiffies(10));
Vivek Natarajan375177b2010-02-09 14:50:28 +05301087 }
1088
Avraham Sternf9202632022-01-26 11:15:31 +02001089 ieee80211_report_used_skb(local, skb, false, status->ack_hwtstamp);
Johannes Berga729cff2011-11-06 14:13:34 +01001090
Johannes Bergfe7a5d52009-11-18 18:42:47 +01001091 /* this was a transmitted frame, but now we want to reuse it */
1092 skb_orphan(skb);
1093
Felix Fietkaueaf55532010-03-11 16:28:24 +01001094 /* Need to make a copy before skb->cb gets cleared */
1095 send_to_cooked = !!(info->flags & IEEE80211_TX_CTL_INJECTED) ||
Helmut Schaaadf5ace52011-12-08 13:11:55 +01001096 !(ieee80211_is_data(fc));
Felix Fietkaueaf55532010-03-11 16:28:24 +01001097
Johannes Bergfe7a5d52009-11-18 18:42:47 +01001098 /*
1099 * This is a bit racy but we can avoid a lot of work
1100 * with this test...
1101 */
Felix Fietkaueaf55532010-03-11 16:28:24 +01001102 if (!local->monitors && (!send_to_cooked || !local->cooked_mntrs)) {
Felix Fietkauf02dff92020-09-08 14:37:00 +02001103 if (status->free_list)
1104 list_add_tail(&skb->list, status->free_list);
1105 else
1106 dev_kfree_skb(skb);
Johannes Bergfe7a5d52009-11-18 18:42:47 +01001107 return;
1108 }
1109
Helmut Schaa4dc792b2015-09-02 13:23:30 +02001110 /* send to monitor interfaces */
Johannes Berg2400dfe2023-08-29 12:17:44 +02001111 ieee80211_tx_monitor(local, skb, retry_count,
John Crispinb7b2e8c2019-07-14 17:44:15 +02001112 send_to_cooked, status);
Johannes Bergfe7a5d52009-11-18 18:42:47 +01001113}
Felix Fietkau5fe49a92017-04-26 17:11:37 +02001114
Kalle Valo2703bc82023-10-12 14:42:28 +03001115void ieee80211_tx_status_skb(struct ieee80211_hw *hw, struct sk_buff *skb)
Felix Fietkau5fe49a92017-04-26 17:11:37 +02001116{
1117 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1118 struct ieee80211_local *local = hw_to_local(hw);
1119 struct ieee80211_tx_status status = {
1120 .skb = skb,
1121 .info = IEEE80211_SKB_CB(skb),
1122 };
Felix Fietkau5fe49a92017-04-26 17:11:37 +02001123 struct sta_info *sta;
1124
1125 rcu_read_lock();
1126
Toke Høiland-Jørgensen5072f732019-11-12 14:08:35 +01001127 sta = sta_info_get_by_addrs(local, hdr->addr1, hdr->addr2);
1128 if (sta)
Felix Fietkau5fe49a92017-04-26 17:11:37 +02001129 status.sta = &sta->sta;
Felix Fietkau5fe49a92017-04-26 17:11:37 +02001130
Felix Fietkau33181112020-09-08 14:36:54 +02001131 ieee80211_tx_status_ext(hw, &status);
Felix Fietkau5fe49a92017-04-26 17:11:37 +02001132 rcu_read_unlock();
1133}
Kalle Valo2703bc82023-10-12 14:42:28 +03001134EXPORT_SYMBOL(ieee80211_tx_status_skb);
Arik Nemtsov8178d382011-04-18 14:22:28 +03001135
Felix Fietkau5fe49a92017-04-26 17:11:37 +02001136void ieee80211_tx_status_ext(struct ieee80211_hw *hw,
1137 struct ieee80211_tx_status *status)
Felix Fietkaueefebd32017-04-26 17:11:36 +02001138{
1139 struct ieee80211_local *local = hw_to_local(hw);
Felix Fietkau5fe49a92017-04-26 17:11:37 +02001140 struct ieee80211_tx_info *info = status->info;
1141 struct ieee80211_sta *pubsta = status->sta;
Felix Fietkaua260e492020-09-08 14:36:58 +02001142 struct sk_buff *skb = status->skb;
Felix Fietkaua260e492020-09-08 14:36:58 +02001143 struct sta_info *sta = NULL;
Felix Fietkau33181112020-09-08 14:36:54 +02001144 int rates_idx, retry_count;
Avraham Sternea5907d2022-02-02 10:49:47 +02001145 bool acked, noack_success, ack_signal_valid;
Felix Fietkaua260e492020-09-08 14:36:58 +02001146 u16 tx_time_est;
Felix Fietkaueefebd32017-04-26 17:11:36 +02001147
Felix Fietkau8ed37e72020-08-21 18:30:43 +02001148 if (pubsta) {
1149 sta = container_of(pubsta, struct sta_info, sta);
1150
Jonas Jelonek44fa75f2022-05-09 19:39:57 +02001151 if (status->n_rates)
1152 sta->deflink.tx_stats.last_rate_info =
1153 status->rates[status->n_rates - 1].rate_idx;
Felix Fietkau8ed37e72020-08-21 18:30:43 +02001154 }
1155
Felix Fietkau23e9f1e2020-09-08 14:36:59 +02001156 if (skb && (tx_time_est =
1157 ieee80211_info_get_tx_time_est(IEEE80211_SKB_CB(skb))) > 0) {
1158 /* Do this here to avoid the expensive lookup of the sta
1159 * in ieee80211_report_used_skb().
1160 */
1161 ieee80211_sta_update_pending_airtime(local, sta,
1162 skb_get_queue_mapping(skb),
1163 tx_time_est,
1164 true);
1165 ieee80211_info_set_tx_time_est(IEEE80211_SKB_CB(skb), 0);
1166 }
1167
1168 if (!status->info)
1169 goto free;
1170
Felix Fietkau33181112020-09-08 14:36:54 +02001171 rates_idx = ieee80211_tx_get_rates(hw, info, &retry_count);
Felix Fietkaueefebd32017-04-26 17:11:36 +02001172
Felix Fietkaueefebd32017-04-26 17:11:36 +02001173 acked = !!(info->flags & IEEE80211_TX_STAT_ACK);
1174 noack_success = !!(info->flags & IEEE80211_TX_STAT_NOACK_TRANSMITTED);
Avraham Sternea5907d2022-02-02 10:49:47 +02001175 ack_signal_valid =
1176 !!(info->status.flags & IEEE80211_TX_STATUS_ACK_SIGNAL_VALID);
Felix Fietkaueefebd32017-04-26 17:11:36 +02001177
1178 if (pubsta) {
Felix Fietkaue3f25902020-09-27 12:56:05 +02001179 struct ieee80211_sub_if_data *sdata = sta->sdata;
1180
Markus Theil5972fa12019-12-18 15:27:36 +01001181 if (!acked && !noack_success)
Sriram R046d2e72022-04-04 21:11:23 +05301182 sta->deflink.status_stats.retry_failed++;
1183 sta->deflink.status_stats.retry_count += retry_count;
Felix Fietkaueefebd32017-04-26 17:11:36 +02001184
Felix Fietkau33181112020-09-08 14:36:54 +02001185 if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
Felix Fietkaue3f25902020-09-27 12:56:05 +02001186 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1187 skb && !(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP))
1188 ieee80211_sta_tx_notify(sdata, (void *) skb->data,
1189 acked, info->status.tx_time);
1190
Felix Fietkau33181112020-09-08 14:36:54 +02001191 if (acked) {
Sriram R046d2e72022-04-04 21:11:23 +05301192 sta->deflink.status_stats.last_ack = jiffies;
Felix Fietkaueefebd32017-04-26 17:11:36 +02001193
Sriram R046d2e72022-04-04 21:11:23 +05301194 if (sta->deflink.status_stats.lost_packets)
1195 sta->deflink.status_stats.lost_packets = 0;
Felix Fietkaueefebd32017-04-26 17:11:36 +02001196
Felix Fietkau33181112020-09-08 14:36:54 +02001197 /* Track when last packet was ACKed */
Sriram R046d2e72022-04-04 21:11:23 +05301198 sta->deflink.status_stats.last_pkt_time = jiffies;
Felix Fietkau33181112020-09-08 14:36:54 +02001199
Felix Fietkaue3f25902020-09-27 12:56:05 +02001200 /* Reset connection monitor */
1201 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1202 unlikely(sdata->u.mgd.probe_send_count > 0))
1203 sdata->u.mgd.probe_send_count = 0;
1204
Avraham Sternea5907d2022-02-02 10:49:47 +02001205 if (ack_signal_valid) {
Sriram R046d2e72022-04-04 21:11:23 +05301206 sta->deflink.status_stats.last_ack_signal =
Felix Fietkau33181112020-09-08 14:36:54 +02001207 (s8)info->status.ack_signal;
Sriram R046d2e72022-04-04 21:11:23 +05301208 sta->deflink.status_stats.ack_signal_filled = true;
1209 ewma_avg_signal_add(&sta->deflink.status_stats.avg_ack_signal,
Felix Fietkau33181112020-09-08 14:36:54 +02001210 -info->status.ack_signal);
1211 }
1212 } else if (test_sta_flag(sta, WLAN_STA_PS_STA)) {
Felix Fietkau1d182882020-11-11 19:33:57 +01001213 /*
1214 * The STA is in power save mode, so assume
1215 * that this TX packet failed because of that.
1216 */
1217 if (skb)
1218 ieee80211_handle_filtered_frame(local, sta, skb);
Felix Fietkau33181112020-09-08 14:36:54 +02001219 return;
1220 } else if (noack_success) {
1221 /* nothing to do here, do not account as lost */
1222 } else {
1223 ieee80211_lost_packet(sta, info);
1224 }
Felix Fietkaueefebd32017-04-26 17:11:36 +02001225 }
1226
Johannes Berge5c0ee02022-06-01 14:16:00 +02001227 rate_control_tx_status(local, status);
Yuan-Chi Pangc4205512018-09-06 16:57:48 +08001228 if (ieee80211_vif_is_mesh(&sta->sdata->vif))
1229 ieee80211s_update_metric(local, sta, status);
Felix Fietkaueefebd32017-04-26 17:11:36 +02001230 }
1231
Felix Fietkaua260e492020-09-08 14:36:58 +02001232 if (skb && !(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP))
Felix Fietkau33181112020-09-08 14:36:54 +02001233 return __ieee80211_tx_status(hw, status, rates_idx,
1234 retry_count);
1235
Felix Fietkaueefebd32017-04-26 17:11:36 +02001236 if (acked || noack_success) {
1237 I802_DEBUG_INC(local->dot11TransmittedFrameCount);
1238 if (!pubsta)
1239 I802_DEBUG_INC(local->dot11MulticastTransmittedFrameCount);
1240 if (retry_count > 0)
1241 I802_DEBUG_INC(local->dot11RetryCount);
1242 if (retry_count > 1)
1243 I802_DEBUG_INC(local->dot11MultipleRetryCount);
1244 } else {
1245 I802_DEBUG_INC(local->dot11FailedCount);
1246 }
Felix Fietkaua260e492020-09-08 14:36:58 +02001247
Felix Fietkau23e9f1e2020-09-08 14:36:59 +02001248free:
Felix Fietkaua260e492020-09-08 14:36:58 +02001249 if (!skb)
1250 return;
1251
Avraham Sternf9202632022-01-26 11:15:31 +02001252 ieee80211_report_used_skb(local, skb, false, status->ack_hwtstamp);
Felix Fietkauf02dff92020-09-08 14:37:00 +02001253 if (status->free_list)
1254 list_add_tail(&skb->list, status->free_list);
1255 else
1256 dev_kfree_skb(skb);
Felix Fietkaueefebd32017-04-26 17:11:36 +02001257}
Felix Fietkau5fe49a92017-04-26 17:11:37 +02001258EXPORT_SYMBOL(ieee80211_tx_status_ext);
Felix Fietkaueefebd32017-04-26 17:11:36 +02001259
Anilkumar Kollif8252e72018-10-11 18:15:03 +05301260void ieee80211_tx_rate_update(struct ieee80211_hw *hw,
1261 struct ieee80211_sta *pubsta,
1262 struct ieee80211_tx_info *info)
1263{
1264 struct ieee80211_local *local = hw_to_local(hw);
Anilkumar Kollif8252e72018-10-11 18:15:03 +05301265 struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
1266 struct ieee80211_tx_status status = {
1267 .info = info,
1268 .sta = pubsta,
1269 };
1270
Johannes Berge5c0ee02022-06-01 14:16:00 +02001271 rate_control_tx_status(local, &status);
Anilkumar Kollif8252e72018-10-11 18:15:03 +05301272
1273 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL))
Sriram R046d2e72022-04-04 21:11:23 +05301274 sta->deflink.tx_stats.last_rate = info->status.rates[0];
Anilkumar Kollif8252e72018-10-11 18:15:03 +05301275}
1276EXPORT_SYMBOL(ieee80211_tx_rate_update);
1277
Arik Nemtsov8178d382011-04-18 14:22:28 +03001278void ieee80211_report_low_ack(struct ieee80211_sta *pubsta, u32 num_packets)
1279{
1280 struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
1281 cfg80211_cqm_pktloss_notify(sta->sdata->dev, sta->sta.addr,
1282 num_packets, GFP_ATOMIC);
1283}
1284EXPORT_SYMBOL(ieee80211_report_low_ack);
Johannes Berg6096de72011-11-04 11:18:10 +01001285
1286void ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb)
1287{
Johannes Berga729cff2011-11-06 14:13:34 +01001288 struct ieee80211_local *local = hw_to_local(hw);
Avraham Sternf9202632022-01-26 11:15:31 +02001289 ktime_t kt = ktime_set(0, 0);
Johannes Berga729cff2011-11-06 14:13:34 +01001290
Avraham Sternf9202632022-01-26 11:15:31 +02001291 ieee80211_report_used_skb(local, skb, true, kt);
Johannes Berg6096de72011-11-04 11:18:10 +01001292 dev_kfree_skb_any(skb);
1293}
1294EXPORT_SYMBOL(ieee80211_free_txskb);
Felix Fietkau1f98ab72012-11-10 03:44:14 +01001295
1296void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
1297 struct sk_buff_head *skbs)
1298{
1299 struct sk_buff *skb;
1300
1301 while ((skb = __skb_dequeue(skbs)))
1302 ieee80211_free_txskb(hw, skb);
1303}