Commit | Line | Data |
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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
fe7a5d5c JB |
2 | /* |
3 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
4 | * Copyright 2005-2006, Devicescape Software, Inc. | |
5 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
026331c4 | 6 | * Copyright 2008-2010 Johannes Berg <johannes@sipsolutions.net> |
d98ad83e | 7 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
ea5907db | 8 | * Copyright 2021-2022 Intel Corporation |
fe7a5d5c JB |
9 | */ |
10 | ||
bc3b2d7f | 11 | #include <linux/export.h> |
888d04df | 12 | #include <linux/etherdevice.h> |
fe7a5d5c | 13 | #include <net/mac80211.h> |
d26ad377 | 14 | #include <asm/unaligned.h> |
fe7a5d5c JB |
15 | #include "ieee80211_i.h" |
16 | #include "rate.h" | |
17 | #include "mesh.h" | |
18 | #include "led.h" | |
948d887d | 19 | #include "wme.h" |
fe7a5d5c JB |
20 | |
21 | ||
22 | void 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))) { | |
c3e7724b | 36 | ieee80211_free_txskb(hw, skb); |
fe7a5d5c JB |
37 | tmp--; |
38 | I802_DEBUG_INC(local->tx_status_drop); | |
39 | } | |
40 | tasklet_schedule(&local->tasklet); | |
41 | } | |
42 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); | |
43 | ||
44 | static 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); | |
948d887d JB |
49 | struct ieee80211_hdr *hdr = (void *)skb->data; |
50 | int ac; | |
fe7a5d5c | 51 | |
890030d3 | 52 | if (info->flags & (IEEE80211_TX_CTL_NO_PS_BUFFER | |
1d182885 FF |
53 | IEEE80211_TX_CTL_AMPDU | |
54 | IEEE80211_TX_CTL_HW_80211_ENCAP)) { | |
da629cf1 HS |
55 | ieee80211_free_txskb(&local->hw, skb); |
56 | return; | |
57 | } | |
58 | ||
697e6a0f JB |
59 | /* |
60 | * This skb 'survived' a round-trip through the driver, and | |
61 | * hopefully the driver didn't mangle it too badly. However, | |
77c2061d | 62 | * we can definitely not rely on the control information |
c6fcf6bc JB |
63 | * 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. | |
697e6a0f JB |
66 | */ |
67 | memset(&info->control, 0, sizeof(info->control)); | |
18c94907 JB |
68 | |
69 | info->control.jiffies = jiffies; | |
70 | info->control.vif = &sta->sdata->vif; | |
cc20ff2c FF |
71 | info->control.flags |= IEEE80211_TX_INTCFL_NEED_TXPROCESSING; |
72 | info->flags |= IEEE80211_TX_INTFL_RETRANSMISSION; | |
eb7d3066 | 73 | info->flags &= ~IEEE80211_TX_TEMPORARY_FLAGS; |
697e6a0f | 74 | |
046d2e7c | 75 | sta->deflink.status_stats.filtered++; |
fe7a5d5c | 76 | |
8a8656fa JB |
77 | /* |
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 | ||
948d887d | 87 | if (ieee80211_is_data_qos(hdr->frame_control)) { |
47086fc5 JB |
88 | 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; | |
731977e9 | 98 | ac = ieee80211_ac_from_tid(tid); |
948d887d JB |
99 | } else { |
100 | ac = IEEE80211_AC_BE; | |
101 | } | |
102 | ||
fe7a5d5c JB |
103 | /* |
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 | */ | |
c2c98fde | 108 | set_sta_flag(sta, WLAN_STA_CLEAR_PS_FILT); |
f7418bc1 | 109 | ieee80211_clear_fast_xmit(sta); |
fe7a5d5c JB |
110 | |
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. | |
d057e5a3 AN |
140 | * (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. | |
fe7a5d5c | 144 | */ |
c2c98fde | 145 | if (test_sta_flag(sta, WLAN_STA_PS_STA) && |
948d887d JB |
146 | skb_queue_len(&sta->tx_filtered[ac]) < STA_MAX_TX_BUFFER) { |
147 | skb_queue_tail(&sta->tx_filtered[ac], skb); | |
c868cb35 | 148 | sta_info_recalc_tim(sta); |
60750397 JB |
149 | |
150 | if (!timer_pending(&local->sta_cleanup)) | |
151 | mod_timer(&local->sta_cleanup, | |
152 | round_jiffies(jiffies + | |
153 | STA_INFO_CLEANUP_INTERVAL)); | |
fe7a5d5c JB |
154 | return; |
155 | } | |
156 | ||
c2c98fde | 157 | if (!test_sta_flag(sta, WLAN_STA_PS_STA) && |
fe7a5d5c JB |
158 | !(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 | ||
bdcbd8e0 JB |
165 | 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); | |
c3e7724b | 169 | ieee80211_free_txskb(&local->hw, skb); |
fe7a5d5c JB |
170 | } |
171 | ||
f0425bed FF |
172 | static 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; | |
8c771244 | 181 | ieee80211_send_bar(&sta->sdata->vif, addr, tid, tid_tx->failed_bar_ssn); |
f0425bed FF |
182 | } |
183 | ||
0f78231b JB |
184 | static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb) |
185 | { | |
186 | struct ieee80211_mgmt *mgmt = (void *) skb->data; | |
187 | struct ieee80211_local *local = sta->local; | |
188 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
0c5b9329 | 189 | |
f0425bed FF |
190 | if (ieee80211_is_data_qos(mgmt->frame_control)) { |
191 | struct ieee80211_hdr *hdr = (void *) skb->data; | |
192 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
193 | u16 tid = qc[0] & 0xf; | |
194 | ||
195 | ieee80211_check_pending_bar(sta, hdr->addr1, tid); | |
196 | } | |
197 | ||
0f78231b | 198 | if (ieee80211_is_action(mgmt->frame_control) && |
cf147085 | 199 | !ieee80211_has_protected(mgmt->frame_control) && |
0f78231b | 200 | mgmt->u.action.category == WLAN_CATEGORY_HT && |
04ecd257 | 201 | mgmt->u.action.u.ht_smps.action == WLAN_HT_ACTION_SMPS && |
04ecd257 | 202 | ieee80211_sdata_running(sdata)) { |
687da132 EG |
203 | enum ieee80211_smps_mode smps_mode; |
204 | ||
0f78231b JB |
205 | switch (mgmt->u.action.u.ht_smps.smps_control) { |
206 | case WLAN_HT_SMPS_CONTROL_DYNAMIC: | |
687da132 | 207 | smps_mode = IEEE80211_SMPS_DYNAMIC; |
0f78231b JB |
208 | break; |
209 | case WLAN_HT_SMPS_CONTROL_STATIC: | |
687da132 | 210 | smps_mode = IEEE80211_SMPS_STATIC; |
0f78231b JB |
211 | break; |
212 | case WLAN_HT_SMPS_CONTROL_DISABLED: | |
213 | default: /* shouldn't happen since we don't send that */ | |
687da132 | 214 | smps_mode = IEEE80211_SMPS_OFF; |
0f78231b JB |
215 | break; |
216 | } | |
217 | ||
687da132 EG |
218 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
219 | /* | |
220 | * This update looks racy, but isn't -- if we come | |
221 | * here we've definitely got a station that we're | |
222 | * talking to, and on a managed interface that can | |
223 | * only be the AP. And the only other place updating | |
224 | * this variable in managed mode is before association. | |
225 | */ | |
bfd8403a | 226 | sdata->deflink.smps_mode = smps_mode; |
687da132 | 227 | ieee80211_queue_work(&local->hw, &sdata->recalc_smps); |
687da132 | 228 | } |
0f78231b JB |
229 | } |
230 | } | |
231 | ||
f0425bed FF |
232 | static void ieee80211_set_bar_pending(struct sta_info *sta, u8 tid, u16 ssn) |
233 | { | |
234 | struct tid_ampdu_tx *tid_tx; | |
235 | ||
236 | tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]); | |
237 | if (!tid_tx) | |
238 | return; | |
239 | ||
240 | tid_tx->failed_bar_ssn = ssn; | |
241 | tid_tx->bar_pending = true; | |
242 | } | |
243 | ||
3d07ffca JC |
244 | static int ieee80211_tx_radiotap_len(struct ieee80211_tx_info *info, |
245 | struct ieee80211_tx_status *status) | |
a2fe8166 | 246 | { |
44fa75f2 | 247 | struct ieee80211_rate_status *status_rate = NULL; |
a2fe8166 HS |
248 | int len = sizeof(struct ieee80211_radiotap_header); |
249 | ||
44fa75f2 JJ |
250 | if (status && status->n_rates) |
251 | status_rate = &status->rates[status->n_rates - 1]; | |
252 | ||
a2fe8166 | 253 | /* IEEE80211_RADIOTAP_RATE rate */ |
44fa75f2 JJ |
254 | if (status_rate && !(status_rate->rate_idx.flags & |
255 | (RATE_INFO_FLAGS_MCS | | |
256 | RATE_INFO_FLAGS_DMG | | |
257 | RATE_INFO_FLAGS_EDMG | | |
258 | RATE_INFO_FLAGS_VHT_MCS | | |
259 | RATE_INFO_FLAGS_HE_MCS))) | |
dc649d64 JC |
260 | len += 2; |
261 | else if (info->status.rates[0].idx >= 0 && | |
262 | !(info->status.rates[0].flags & | |
263 | (IEEE80211_TX_RC_MCS | IEEE80211_TX_RC_VHT_MCS))) | |
a2fe8166 HS |
264 | len += 2; |
265 | ||
266 | /* IEEE80211_RADIOTAP_TX_FLAGS */ | |
267 | len += 2; | |
268 | ||
269 | /* IEEE80211_RADIOTAP_DATA_RETRIES */ | |
270 | len += 1; | |
271 | ||
a8241310 KB |
272 | /* IEEE80211_RADIOTAP_MCS |
273 | * IEEE80211_RADIOTAP_VHT */ | |
44fa75f2 JJ |
274 | if (status_rate) { |
275 | if (status_rate->rate_idx.flags & RATE_INFO_FLAGS_MCS) | |
3d07ffca | 276 | len += 3; |
44fa75f2 | 277 | else if (status_rate->rate_idx.flags & RATE_INFO_FLAGS_VHT_MCS) |
3d07ffca | 278 | len = ALIGN(len, 2) + 12; |
44fa75f2 | 279 | else if (status_rate->rate_idx.flags & RATE_INFO_FLAGS_HE_MCS) |
3d07ffca JC |
280 | len = ALIGN(len, 2) + 12; |
281 | } else if (info->status.rates[0].idx >= 0) { | |
a8241310 KB |
282 | if (info->status.rates[0].flags & IEEE80211_TX_RC_MCS) |
283 | len += 3; | |
284 | else if (info->status.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) | |
285 | len = ALIGN(len, 2) + 12; | |
286 | } | |
7f2a5e21 | 287 | |
a2fe8166 HS |
288 | return len; |
289 | } | |
290 | ||
2103dec1 | 291 | static void |
a8241310 | 292 | ieee80211_add_tx_radiotap_header(struct ieee80211_local *local, |
2103dec1 | 293 | struct sk_buff *skb, int retry_count, |
3d07ffca JC |
294 | int rtap_len, int shift, |
295 | struct ieee80211_tx_status *status) | |
a2fe8166 HS |
296 | { |
297 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
298 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
299 | struct ieee80211_radiotap_header *rthdr; | |
44fa75f2 | 300 | struct ieee80211_rate_status *status_rate = NULL; |
a2fe8166 | 301 | unsigned char *pos; |
3d07ffca | 302 | u16 legacy_rate = 0; |
9c8f2c42 | 303 | u16 txflags; |
a2fe8166 | 304 | |
44fa75f2 JJ |
305 | if (status && status->n_rates) |
306 | status_rate = &status->rates[status->n_rates - 1]; | |
307 | ||
d58ff351 | 308 | rthdr = skb_push(skb, rtap_len); |
a2fe8166 HS |
309 | |
310 | memset(rthdr, 0, rtap_len); | |
311 | rthdr->it_len = cpu_to_le16(rtap_len); | |
312 | rthdr->it_present = | |
5cafd378 KC |
313 | cpu_to_le32(BIT(IEEE80211_RADIOTAP_TX_FLAGS) | |
314 | BIT(IEEE80211_RADIOTAP_DATA_RETRIES)); | |
a2fe8166 HS |
315 | pos = (unsigned char *)(rthdr + 1); |
316 | ||
317 | /* | |
318 | * XXX: Once radiotap gets the bitmap reset thing the vendor | |
319 | * extensions proposal contains, we can actually report | |
320 | * the whole set of tries we did. | |
321 | */ | |
322 | ||
323 | /* IEEE80211_RADIOTAP_RATE */ | |
2103dec1 | 324 | |
44fa75f2 JJ |
325 | if (status_rate) { |
326 | if (!(status_rate->rate_idx.flags & | |
327 | (RATE_INFO_FLAGS_MCS | | |
328 | RATE_INFO_FLAGS_DMG | | |
329 | RATE_INFO_FLAGS_EDMG | | |
330 | RATE_INFO_FLAGS_VHT_MCS | | |
331 | RATE_INFO_FLAGS_HE_MCS))) | |
332 | legacy_rate = status_rate->rate_idx.legacy; | |
8db6e736 | 333 | } else if (info->status.rates[0].idx >= 0 && |
3d07ffca | 334 | !(info->status.rates[0].flags & (IEEE80211_TX_RC_MCS | |
e5c0ee01 JB |
335 | IEEE80211_TX_RC_VHT_MCS))) { |
336 | struct ieee80211_supported_band *sband; | |
337 | ||
338 | sband = local->hw.wiphy->bands[info->band]; | |
3d07ffca JC |
339 | legacy_rate = |
340 | sband->bitrates[info->status.rates[0].idx].bitrate; | |
e5c0ee01 | 341 | } |
3d07ffca JC |
342 | |
343 | if (legacy_rate) { | |
5cafd378 | 344 | rthdr->it_present |= cpu_to_le32(BIT(IEEE80211_RADIOTAP_RATE)); |
3d07ffca | 345 | *pos = DIV_ROUND_UP(legacy_rate, 5 * (1 << shift)); |
a2fe8166 HS |
346 | /* padding for tx flags */ |
347 | pos += 2; | |
348 | } | |
349 | ||
350 | /* IEEE80211_RADIOTAP_TX_FLAGS */ | |
351 | txflags = 0; | |
352 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && | |
353 | !is_multicast_ether_addr(hdr->addr1)) | |
9c8f2c42 | 354 | txflags |= IEEE80211_RADIOTAP_F_TX_FAIL; |
a2fe8166 | 355 | |
311ab8e1 | 356 | if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) |
9c8f2c42 | 357 | txflags |= IEEE80211_RADIOTAP_F_TX_CTS; |
311ab8e1 | 358 | if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) |
9c8f2c42 | 359 | txflags |= IEEE80211_RADIOTAP_F_TX_RTS; |
a2fe8166 HS |
360 | |
361 | put_unaligned_le16(txflags, pos); | |
362 | pos += 2; | |
363 | ||
364 | /* IEEE80211_RADIOTAP_DATA_RETRIES */ | |
365 | /* for now report the total retry_count */ | |
366 | *pos = retry_count; | |
367 | pos++; | |
7f2a5e21 | 368 | |
44fa75f2 JJ |
369 | if (status_rate && (status_rate->rate_idx.flags & RATE_INFO_FLAGS_MCS)) |
370 | { | |
5cafd378 | 371 | rthdr->it_present |= cpu_to_le32(BIT(IEEE80211_RADIOTAP_MCS)); |
3d07ffca JC |
372 | pos[0] = IEEE80211_RADIOTAP_MCS_HAVE_MCS | |
373 | IEEE80211_RADIOTAP_MCS_HAVE_GI | | |
374 | IEEE80211_RADIOTAP_MCS_HAVE_BW; | |
44fa75f2 | 375 | if (status_rate->rate_idx.flags & RATE_INFO_FLAGS_SHORT_GI) |
3d07ffca | 376 | pos[1] |= IEEE80211_RADIOTAP_MCS_SGI; |
44fa75f2 | 377 | if (status_rate->rate_idx.bw == RATE_INFO_BW_40) |
3d07ffca | 378 | pos[1] |= IEEE80211_RADIOTAP_MCS_BW_40; |
44fa75f2 | 379 | pos[2] = status_rate->rate_idx.mcs; |
3d07ffca | 380 | pos += 3; |
44fa75f2 JJ |
381 | } else if (status_rate && (status_rate->rate_idx.flags & |
382 | RATE_INFO_FLAGS_VHT_MCS)) | |
383 | { | |
3d07ffca JC |
384 | u16 known = local->hw.radiotap_vht_details & |
385 | (IEEE80211_RADIOTAP_VHT_KNOWN_GI | | |
386 | IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH); | |
387 | ||
5cafd378 | 388 | rthdr->it_present |= cpu_to_le32(BIT(IEEE80211_RADIOTAP_VHT)); |
3d07ffca JC |
389 | |
390 | /* required alignment from rthdr */ | |
391 | pos = (u8 *)rthdr + ALIGN(pos - (u8 *)rthdr, 2); | |
392 | ||
393 | /* u16 known - IEEE80211_RADIOTAP_VHT_KNOWN_* */ | |
394 | put_unaligned_le16(known, pos); | |
395 | pos += 2; | |
396 | ||
397 | /* u8 flags - IEEE80211_RADIOTAP_VHT_FLAG_* */ | |
44fa75f2 | 398 | if (status_rate->rate_idx.flags & RATE_INFO_FLAGS_SHORT_GI) |
3d07ffca JC |
399 | *pos |= IEEE80211_RADIOTAP_VHT_FLAG_SGI; |
400 | pos++; | |
401 | ||
402 | /* u8 bandwidth */ | |
44fa75f2 | 403 | switch (status_rate->rate_idx.bw) { |
3d07ffca JC |
404 | case RATE_INFO_BW_160: |
405 | *pos = 11; | |
406 | break; | |
407 | case RATE_INFO_BW_80: | |
a027c304 | 408 | *pos = 4; |
3d07ffca JC |
409 | break; |
410 | case RATE_INFO_BW_40: | |
411 | *pos = 1; | |
412 | break; | |
413 | default: | |
414 | *pos = 0; | |
415 | break; | |
416 | } | |
3a00f081 | 417 | pos++; |
3d07ffca JC |
418 | |
419 | /* u8 mcs_nss[4] */ | |
44fa75f2 JJ |
420 | *pos = (status_rate->rate_idx.mcs << 4) | |
421 | status_rate->rate_idx.nss; | |
3d07ffca JC |
422 | pos += 4; |
423 | ||
424 | /* u8 coding */ | |
425 | pos++; | |
426 | /* u8 group_id */ | |
427 | pos++; | |
428 | /* u16 partial_aid */ | |
429 | pos += 2; | |
44fa75f2 JJ |
430 | } else if (status_rate && (status_rate->rate_idx.flags & |
431 | RATE_INFO_FLAGS_HE_MCS)) | |
432 | { | |
3d07ffca JC |
433 | struct ieee80211_radiotap_he *he; |
434 | ||
5cafd378 | 435 | rthdr->it_present |= cpu_to_le32(BIT(IEEE80211_RADIOTAP_HE)); |
3d07ffca JC |
436 | |
437 | /* required alignment from rthdr */ | |
438 | pos = (u8 *)rthdr + ALIGN(pos - (u8 *)rthdr, 2); | |
439 | he = (struct ieee80211_radiotap_he *)pos; | |
440 | ||
441 | he->data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_SU | | |
442 | IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN | | |
443 | IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN | | |
444 | IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN); | |
445 | ||
446 | he->data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN); | |
447 | ||
448 | #define HE_PREP(f, val) le16_encode_bits(val, IEEE80211_RADIOTAP_HE_##f) | |
449 | ||
44fa75f2 | 450 | he->data6 |= HE_PREP(DATA6_NSTS, status_rate->rate_idx.nss); |
3d07ffca JC |
451 | |
452 | #define CHECK_GI(s) \ | |
453 | BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA5_GI_##s != \ | |
454 | (int)NL80211_RATE_INFO_HE_GI_##s) | |
455 | ||
456 | CHECK_GI(0_8); | |
457 | CHECK_GI(1_6); | |
458 | CHECK_GI(3_2); | |
459 | ||
44fa75f2 JJ |
460 | he->data3 |= HE_PREP(DATA3_DATA_MCS, status_rate->rate_idx.mcs); |
461 | he->data3 |= HE_PREP(DATA3_DATA_DCM, status_rate->rate_idx.he_dcm); | |
3d07ffca | 462 | |
44fa75f2 | 463 | he->data5 |= HE_PREP(DATA5_GI, status_rate->rate_idx.he_gi); |
3d07ffca | 464 | |
44fa75f2 | 465 | switch (status_rate->rate_idx.bw) { |
3d07ffca JC |
466 | case RATE_INFO_BW_20: |
467 | he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, | |
468 | IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_20MHZ); | |
469 | break; | |
470 | case RATE_INFO_BW_40: | |
471 | he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, | |
472 | IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_40MHZ); | |
473 | break; | |
474 | case RATE_INFO_BW_80: | |
475 | he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, | |
476 | IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_80MHZ); | |
477 | break; | |
478 | case RATE_INFO_BW_160: | |
479 | he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, | |
480 | IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_160MHZ); | |
481 | break; | |
482 | case RATE_INFO_BW_HE_RU: | |
483 | #define CHECK_RU_ALLOC(s) \ | |
484 | BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_##s##T != \ | |
485 | NL80211_RATE_INFO_HE_RU_ALLOC_##s + 4) | |
486 | ||
487 | CHECK_RU_ALLOC(26); | |
488 | CHECK_RU_ALLOC(52); | |
489 | CHECK_RU_ALLOC(106); | |
490 | CHECK_RU_ALLOC(242); | |
491 | CHECK_RU_ALLOC(484); | |
492 | CHECK_RU_ALLOC(996); | |
493 | CHECK_RU_ALLOC(2x996); | |
494 | ||
495 | he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, | |
44fa75f2 | 496 | status_rate->rate_idx.he_ru_alloc + 4); |
3d07ffca JC |
497 | break; |
498 | default: | |
44fa75f2 | 499 | WARN_ONCE(1, "Invalid SU BW %d\n", status_rate->rate_idx.bw); |
3d07ffca JC |
500 | } |
501 | ||
502 | pos += sizeof(struct ieee80211_radiotap_he); | |
503 | } | |
504 | ||
44fa75f2 | 505 | if (status_rate || info->status.rates[0].idx < 0) |
a8241310 KB |
506 | return; |
507 | ||
508 | /* IEEE80211_RADIOTAP_MCS | |
509 | * IEEE80211_RADIOTAP_VHT */ | |
510 | if (info->status.rates[0].flags & IEEE80211_TX_RC_MCS) { | |
5cafd378 | 511 | rthdr->it_present |= cpu_to_le32(BIT(IEEE80211_RADIOTAP_MCS)); |
7f2a5e21 HS |
512 | pos[0] = IEEE80211_RADIOTAP_MCS_HAVE_MCS | |
513 | IEEE80211_RADIOTAP_MCS_HAVE_GI | | |
514 | IEEE80211_RADIOTAP_MCS_HAVE_BW; | |
515 | if (info->status.rates[0].flags & IEEE80211_TX_RC_SHORT_GI) | |
516 | pos[1] |= IEEE80211_RADIOTAP_MCS_SGI; | |
517 | if (info->status.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH) | |
518 | pos[1] |= IEEE80211_RADIOTAP_MCS_BW_40; | |
519 | if (info->status.rates[0].flags & IEEE80211_TX_RC_GREEN_FIELD) | |
520 | pos[1] |= IEEE80211_RADIOTAP_MCS_FMT_GF; | |
521 | pos[2] = info->status.rates[0].idx; | |
522 | pos += 3; | |
a8241310 KB |
523 | } else if (info->status.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) { |
524 | u16 known = local->hw.radiotap_vht_details & | |
525 | (IEEE80211_RADIOTAP_VHT_KNOWN_GI | | |
526 | IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH); | |
527 | ||
5cafd378 | 528 | rthdr->it_present |= cpu_to_le32(BIT(IEEE80211_RADIOTAP_VHT)); |
a8241310 KB |
529 | |
530 | /* required alignment from rthdr */ | |
531 | pos = (u8 *)rthdr + ALIGN(pos - (u8 *)rthdr, 2); | |
7f2a5e21 | 532 | |
a8241310 KB |
533 | /* u16 known - IEEE80211_RADIOTAP_VHT_KNOWN_* */ |
534 | put_unaligned_le16(known, pos); | |
535 | pos += 2; | |
536 | ||
537 | /* u8 flags - IEEE80211_RADIOTAP_VHT_FLAG_* */ | |
538 | if (info->status.rates[0].flags & IEEE80211_TX_RC_SHORT_GI) | |
539 | *pos |= IEEE80211_RADIOTAP_VHT_FLAG_SGI; | |
540 | pos++; | |
541 | ||
542 | /* u8 bandwidth */ | |
543 | if (info->status.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH) | |
544 | *pos = 1; | |
545 | else if (info->status.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH) | |
546 | *pos = 4; | |
547 | else if (info->status.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH) | |
548 | *pos = 11; | |
549 | else /* IEEE80211_TX_RC_{20_MHZ_WIDTH,FIXME:DUP_DATA} */ | |
550 | *pos = 0; | |
551 | pos++; | |
552 | ||
553 | /* u8 mcs_nss[4] */ | |
554 | *pos = (ieee80211_rate_get_vht_mcs(&info->status.rates[0]) << 4) | | |
555 | ieee80211_rate_get_vht_nss(&info->status.rates[0]); | |
556 | pos += 4; | |
557 | ||
558 | /* u8 coding */ | |
559 | pos++; | |
560 | /* u8 group_id */ | |
561 | pos++; | |
562 | /* u16 partial_aid */ | |
563 | pos += 2; | |
564 | } | |
a2fe8166 HS |
565 | } |
566 | ||
1277b4a9 LK |
567 | /* |
568 | * Handles the tx for TDLS teardown frames. | |
569 | * If the frame wasn't ACKed by the peer - it will be re-sent through the AP | |
570 | */ | |
571 | static void ieee80211_tdls_td_tx_handle(struct ieee80211_local *local, | |
572 | struct ieee80211_sub_if_data *sdata, | |
573 | struct sk_buff *skb, u32 flags) | |
574 | { | |
575 | struct sk_buff *teardown_skb; | |
576 | struct sk_buff *orig_teardown_skb; | |
577 | bool is_teardown = false; | |
578 | ||
579 | /* Get the teardown data we need and free the lock */ | |
580 | spin_lock(&sdata->u.mgd.teardown_lock); | |
581 | teardown_skb = sdata->u.mgd.teardown_skb; | |
582 | orig_teardown_skb = sdata->u.mgd.orig_teardown_skb; | |
583 | if ((skb == orig_teardown_skb) && teardown_skb) { | |
584 | sdata->u.mgd.teardown_skb = NULL; | |
585 | sdata->u.mgd.orig_teardown_skb = NULL; | |
586 | is_teardown = true; | |
587 | } | |
588 | spin_unlock(&sdata->u.mgd.teardown_lock); | |
589 | ||
590 | if (is_teardown) { | |
591 | /* This mechanism relies on being able to get ACKs */ | |
30686bf7 | 592 | WARN_ON(!ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)); |
1277b4a9 LK |
593 | |
594 | /* Check if peer has ACKed */ | |
595 | if (flags & IEEE80211_TX_STAT_ACK) { | |
596 | dev_kfree_skb_any(teardown_skb); | |
597 | } else { | |
598 | tdls_dbg(sdata, | |
599 | "TDLS Resending teardown through AP\n"); | |
600 | ||
601 | ieee80211_subif_start_xmit(teardown_skb, skb->dev); | |
602 | } | |
603 | } | |
604 | } | |
605 | ||
b2eb0ee6 JB |
606 | static struct ieee80211_sub_if_data * |
607 | ieee80211_sdata_from_skb(struct ieee80211_local *local, struct sk_buff *skb) | |
608 | { | |
609 | struct ieee80211_sub_if_data *sdata; | |
610 | ||
611 | if (skb->dev) { | |
612 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
613 | if (!sdata->dev) | |
614 | continue; | |
615 | ||
616 | if (skb->dev == sdata->dev) | |
617 | return sdata; | |
618 | } | |
619 | ||
620 | return NULL; | |
621 | } | |
622 | ||
623 | return rcu_dereference(local->p2p_sdata); | |
624 | } | |
625 | ||
626 | static void ieee80211_report_ack_skb(struct ieee80211_local *local, | |
f9202638 AS |
627 | struct sk_buff *orig_skb, |
628 | bool acked, bool dropped, | |
629 | ktime_t ack_hwtstamp) | |
b2eb0ee6 | 630 | { |
f9202638 | 631 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(orig_skb); |
b2eb0ee6 JB |
632 | struct sk_buff *skb; |
633 | unsigned long flags; | |
634 | ||
635 | spin_lock_irqsave(&local->ack_status_lock, flags); | |
d3e709e6 | 636 | skb = idr_remove(&local->ack_status_frames, info->ack_frame_id); |
b2eb0ee6 JB |
637 | spin_unlock_irqrestore(&local->ack_status_lock, flags); |
638 | ||
639 | if (!skb) | |
640 | return; | |
641 | ||
b2eb0ee6 | 642 | if (info->flags & IEEE80211_TX_INTFL_NL80211_FRAME_TX) { |
3b79af97 | 643 | u64 cookie = IEEE80211_SKB_CB(skb)->ack.cookie; |
b2eb0ee6 | 644 | struct ieee80211_sub_if_data *sdata; |
3b79af97 | 645 | struct ieee80211_hdr *hdr = (void *)skb->data; |
ea5907db AS |
646 | bool is_valid_ack_signal = |
647 | !!(info->status.flags & IEEE80211_TX_STATUS_ACK_SIGNAL_VALID); | |
f9202638 AS |
648 | struct cfg80211_tx_status status = { |
649 | .cookie = cookie, | |
650 | .buf = skb->data, | |
651 | .len = skb->len, | |
652 | .ack = acked, | |
653 | }; | |
654 | ||
655 | if (ieee80211_is_timing_measurement(orig_skb) || | |
656 | ieee80211_is_ftm(orig_skb)) { | |
657 | status.tx_tstamp = | |
658 | ktime_to_ns(skb_hwtstamps(orig_skb)->hwtstamp); | |
659 | status.ack_tstamp = ktime_to_ns(ack_hwtstamp); | |
660 | } | |
b2eb0ee6 JB |
661 | |
662 | rcu_read_lock(); | |
663 | sdata = ieee80211_sdata_from_skb(local, skb); | |
3b79af97 | 664 | if (sdata) { |
10cb8e61 MT |
665 | if (skb->protocol == sdata->control_port_protocol || |
666 | skb->protocol == cpu_to_be16(ETH_P_PREAUTH)) | |
86a1b9d7 MT |
667 | cfg80211_control_port_tx_status(&sdata->wdev, |
668 | cookie, | |
669 | skb->data, | |
670 | skb->len, | |
671 | acked, | |
672 | GFP_ATOMIC); | |
673 | else if (ieee80211_is_any_nullfunc(hdr->frame_control)) | |
3b79af97 | 674 | cfg80211_probe_status(sdata->dev, hdr->addr1, |
a78b26ff VN |
675 | cookie, acked, |
676 | info->status.ack_signal, | |
ea5907db | 677 | is_valid_ack_signal, |
3b79af97 | 678 | GFP_ATOMIC); |
a7528198 | 679 | else if (ieee80211_is_mgmt(hdr->frame_control)) |
f9202638 AS |
680 | cfg80211_mgmt_tx_status_ext(&sdata->wdev, |
681 | &status, | |
682 | GFP_ATOMIC); | |
a7528198 | 683 | else |
86a1b9d7 MT |
684 | pr_warn("Unknown status report in ack skb\n"); |
685 | ||
3b79af97 | 686 | } |
b2eb0ee6 JB |
687 | rcu_read_unlock(); |
688 | ||
8682250b AO |
689 | dev_kfree_skb_any(skb); |
690 | } else if (dropped) { | |
b2eb0ee6 JB |
691 | dev_kfree_skb_any(skb); |
692 | } else { | |
693 | /* consumes skb */ | |
694 | skb_complete_wifi_ack(skb, acked); | |
695 | } | |
696 | } | |
697 | ||
8a2fbedc | 698 | static void ieee80211_report_used_skb(struct ieee80211_local *local, |
f9202638 AS |
699 | struct sk_buff *skb, bool dropped, |
700 | ktime_t ack_hwtstamp) | |
8a2fbedc JB |
701 | { |
702 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
7a89233a | 703 | u16 tx_time_est = ieee80211_info_get_tx_time_est(info); |
8a2fbedc JB |
704 | struct ieee80211_hdr *hdr = (void *)skb->data; |
705 | bool acked = info->flags & IEEE80211_TX_STAT_ACK; | |
706 | ||
707 | if (dropped) | |
708 | acked = false; | |
709 | ||
7a89233a THJ |
710 | if (tx_time_est) { |
711 | struct sta_info *sta; | |
712 | ||
713 | rcu_read_lock(); | |
714 | ||
715 | sta = sta_info_get_by_addrs(local, hdr->addr1, hdr->addr2); | |
716 | ieee80211_sta_update_pending_airtime(local, sta, | |
717 | skb_get_queue_mapping(skb), | |
718 | tx_time_est, | |
719 | true); | |
720 | rcu_read_unlock(); | |
721 | } | |
722 | ||
3b79af97 | 723 | if (info->flags & IEEE80211_TX_INTFL_MLME_CONN_TX) { |
b2eb0ee6 | 724 | struct ieee80211_sub_if_data *sdata; |
8a2fbedc JB |
725 | |
726 | rcu_read_lock(); | |
727 | ||
b2eb0ee6 | 728 | sdata = ieee80211_sdata_from_skb(local, skb); |
8a2fbedc | 729 | |
1672c0e3 | 730 | if (!sdata) { |
8a2fbedc | 731 | skb->dev = NULL; |
b7ce33df | 732 | } else if (!dropped) { |
1277b4a9 LK |
733 | unsigned int hdr_size = |
734 | ieee80211_hdrlen(hdr->frame_control); | |
735 | ||
736 | /* Check to see if packet is a TDLS teardown packet */ | |
737 | if (ieee80211_is_data(hdr->frame_control) && | |
738 | (ieee80211_get_tdls_action(skb, hdr_size) == | |
f5a4c24e | 739 | WLAN_TDLS_TEARDOWN)) { |
1277b4a9 LK |
740 | ieee80211_tdls_td_tx_handle(local, sdata, skb, |
741 | info->flags); | |
f5a4c24e LB |
742 | } else if (ieee80211_s1g_is_twt_setup(skb)) { |
743 | if (!acked) { | |
744 | struct sk_buff *qskb; | |
745 | ||
746 | qskb = skb_clone(skb, GFP_ATOMIC); | |
747 | if (qskb) { | |
748 | skb_queue_tail(&sdata->status_queue, | |
749 | qskb); | |
750 | ieee80211_queue_work(&local->hw, | |
751 | &sdata->work); | |
752 | } | |
753 | } | |
754 | } else { | |
1277b4a9 LK |
755 | ieee80211_mgd_conn_tx_status(sdata, |
756 | hdr->frame_control, | |
757 | acked); | |
f5a4c24e | 758 | } |
8a2fbedc JB |
759 | } |
760 | ||
761 | rcu_read_unlock(); | |
b2eb0ee6 | 762 | } else if (info->ack_frame_id) { |
f9202638 AS |
763 | ieee80211_report_ack_skb(local, skb, acked, dropped, |
764 | ack_hwtstamp); | |
8a2fbedc | 765 | } |
2cc6f5a7 JB |
766 | |
767 | if (!dropped && skb->destructor) { | |
768 | skb->wifi_acked_valid = 1; | |
769 | skb->wifi_acked = acked; | |
770 | } | |
5d473fed BA |
771 | |
772 | ieee80211_led_tx(local); | |
34b1e0e9 SS |
773 | |
774 | if (skb_has_frag_list(skb)) { | |
775 | kfree_skb_list(skb_shinfo(skb)->frag_list); | |
776 | skb_shinfo(skb)->frag_list = NULL; | |
777 | } | |
8a2fbedc JB |
778 | } |
779 | ||
99ba2a14 JB |
780 | /* |
781 | * Use a static threshold for now, best value to be determined | |
782 | * by testing ... | |
783 | * Should it depend on: | |
784 | * - on # of retransmissions | |
785 | * - current throughput (higher value for higher tpt)? | |
786 | */ | |
787 | #define STA_LOST_PKT_THRESHOLD 50 | |
47df8e05 | 788 | #define STA_LOST_PKT_TIME HZ /* 1 sec since last ACK */ |
9d58f25b | 789 | #define STA_LOST_TDLS_PKT_TIME (10*HZ) /* 10secs since last ACK */ |
99ba2a14 | 790 | |
ad9dda63 FF |
791 | static void ieee80211_lost_packet(struct sta_info *sta, |
792 | struct ieee80211_tx_info *info) | |
abd43a6a | 793 | { |
47df8e05 FF |
794 | unsigned long pkt_time = STA_LOST_PKT_TIME; |
795 | unsigned int pkt_thr = STA_LOST_PKT_THRESHOLD; | |
796 | ||
e8a24cd4 RM |
797 | /* If driver relies on its own algorithm for station kickout, skip |
798 | * mac80211 packet loss mechanism. | |
799 | */ | |
800 | if (ieee80211_hw_check(&sta->local->hw, REPORTS_LOW_ACK)) | |
801 | return; | |
802 | ||
abd43a6a FF |
803 | /* This packet was aggregated but doesn't carry status info */ |
804 | if ((info->flags & IEEE80211_TX_CTL_AMPDU) && | |
805 | !(info->flags & IEEE80211_TX_STAT_AMPDU)) | |
806 | return; | |
807 | ||
046d2e7c | 808 | sta->deflink.status_stats.lost_packets++; |
47df8e05 FF |
809 | if (sta->sta.tdls) { |
810 | pkt_time = STA_LOST_TDLS_PKT_TIME; | |
811 | pkt_thr = STA_LOST_PKT_THRESHOLD; | |
812 | } | |
9d58f25b LK |
813 | |
814 | /* | |
453a2a82 | 815 | * If we're in TDLS mode, make sure that all STA_LOST_PKT_THRESHOLD |
9d58f25b LK |
816 | * of the last packets were lost, and that no ACK was received in the |
817 | * last STA_LOST_TDLS_PKT_TIME ms, before triggering the CQM packet-loss | |
818 | * mechanism. | |
47df8e05 | 819 | * For non-TDLS, use STA_LOST_PKT_THRESHOLD and STA_LOST_PKT_TIME |
9d58f25b | 820 | */ |
046d2e7c S |
821 | if (sta->deflink.status_stats.lost_packets < pkt_thr || |
822 | !time_after(jiffies, sta->deflink.status_stats.last_pkt_time + pkt_time)) | |
abd43a6a FF |
823 | return; |
824 | ||
825 | cfg80211_cqm_pktloss_notify(sta->sdata->dev, sta->sta.addr, | |
046d2e7c S |
826 | sta->deflink.status_stats.lost_packets, |
827 | GFP_ATOMIC); | |
828 | sta->deflink.status_stats.lost_packets = 0; | |
abd43a6a FF |
829 | } |
830 | ||
7e1cdcbb FF |
831 | static int ieee80211_tx_get_rates(struct ieee80211_hw *hw, |
832 | struct ieee80211_tx_info *info, | |
833 | int *retry_count) | |
fe7a5d5c | 834 | { |
7e1cdcbb FF |
835 | int count = -1; |
836 | int i; | |
fe7a5d5c JB |
837 | |
838 | for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { | |
d01b3160 LB |
839 | if ((info->flags & IEEE80211_TX_CTL_AMPDU) && |
840 | !(info->flags & IEEE80211_TX_STAT_AMPDU)) { | |
841 | /* just the first aggr frame carry status info */ | |
842 | info->status.rates[i].idx = -1; | |
843 | info->status.rates[i].count = 0; | |
844 | break; | |
845 | } else if (info->status.rates[i].idx < 0) { | |
be7974aa HS |
846 | break; |
847 | } else if (i >= hw->max_report_rates) { | |
848 | /* the HW cannot have attempted that rate */ | |
fe7a5d5c JB |
849 | info->status.rates[i].idx = -1; |
850 | info->status.rates[i].count = 0; | |
be7974aa | 851 | break; |
fe7a5d5c JB |
852 | } |
853 | ||
7e1cdcbb | 854 | count += info->status.rates[i].count; |
fe7a5d5c | 855 | } |
be7974aa | 856 | |
7e1cdcbb FF |
857 | if (count < 0) |
858 | count = 0; | |
859 | ||
860 | *retry_count = count; | |
f2a0c187 | 861 | return i - 1; |
7e1cdcbb FF |
862 | } |
863 | ||
4dc792b8 | 864 | void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, |
b7b2e8ca JC |
865 | int retry_count, int shift, bool send_to_cooked, |
866 | struct ieee80211_tx_status *status) | |
7e1cdcbb FF |
867 | { |
868 | struct sk_buff *skb2; | |
4dc792b8 HS |
869 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
870 | struct ieee80211_sub_if_data *sdata; | |
871 | struct net_device *prev_dev = NULL; | |
872 | int rtap_len; | |
873 | ||
874 | /* send frame to monitor interfaces now */ | |
3d07ffca | 875 | rtap_len = ieee80211_tx_radiotap_len(info, status); |
4dc792b8 HS |
876 | if (WARN_ON_ONCE(skb_headroom(skb) < rtap_len)) { |
877 | pr_err("ieee80211_tx_status: headroom too small\n"); | |
878 | dev_kfree_skb(skb); | |
879 | return; | |
880 | } | |
e5c0ee01 | 881 | ieee80211_add_tx_radiotap_header(local, skb, retry_count, |
3d07ffca | 882 | rtap_len, shift, status); |
4dc792b8 HS |
883 | |
884 | /* XXX: is this sufficient for BPF? */ | |
d57a544d | 885 | skb_reset_mac_header(skb); |
4dc792b8 HS |
886 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
887 | skb->pkt_type = PACKET_OTHERHOST; | |
888 | skb->protocol = htons(ETH_P_802_2); | |
889 | memset(skb->cb, 0, sizeof(skb->cb)); | |
890 | ||
891 | rcu_read_lock(); | |
892 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
893 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { | |
894 | if (!ieee80211_sdata_running(sdata)) | |
895 | continue; | |
896 | ||
d8212184 | 897 | if ((sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) && |
4dc792b8 HS |
898 | !send_to_cooked) |
899 | continue; | |
900 | ||
901 | if (prev_dev) { | |
902 | skb2 = skb_clone(skb, GFP_ATOMIC); | |
903 | if (skb2) { | |
904 | skb2->dev = prev_dev; | |
905 | netif_rx(skb2); | |
906 | } | |
907 | } | |
908 | ||
909 | prev_dev = sdata->dev; | |
910 | } | |
911 | } | |
912 | if (prev_dev) { | |
913 | skb->dev = prev_dev; | |
914 | netif_rx(skb); | |
915 | skb = NULL; | |
916 | } | |
917 | rcu_read_unlock(); | |
918 | dev_kfree_skb(skb); | |
919 | } | |
920 | ||
5fe49a9d | 921 | static void __ieee80211_tx_status(struct ieee80211_hw *hw, |
3318111c FF |
922 | struct ieee80211_tx_status *status, |
923 | int rates_idx, int retry_count) | |
4dc792b8 | 924 | { |
5fe49a9d | 925 | struct sk_buff *skb = status->skb; |
7e1cdcbb FF |
926 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
927 | struct ieee80211_local *local = hw_to_local(hw); | |
5fe49a9d FF |
928 | struct ieee80211_tx_info *info = status->info; |
929 | struct sta_info *sta; | |
7e1cdcbb | 930 | __le16 fc; |
7e1cdcbb FF |
931 | bool send_to_cooked; |
932 | bool acked; | |
5972fa15 | 933 | bool noack_success; |
7e1cdcbb | 934 | struct ieee80211_bar *bar; |
7e1cdcbb | 935 | int shift = 0; |
5e06a9e8 | 936 | int tid = IEEE80211_NUM_TIDS; |
7e1cdcbb | 937 | |
375177bf | 938 | fc = hdr->frame_control; |
fe7a5d5c | 939 | |
5fe49a9d FF |
940 | if (status->sta) { |
941 | sta = container_of(status->sta, struct sta_info, sta); | |
2103dec1 SW |
942 | shift = ieee80211_vif_get_shift(&sta->sdata->vif); |
943 | ||
47086fc5 | 944 | if (info->flags & IEEE80211_TX_STATUS_EOSP) |
c2c98fde | 945 | clear_sta_flag(sta, WLAN_STA_SP); |
47086fc5 | 946 | |
04ac3c0e | 947 | acked = !!(info->flags & IEEE80211_TX_STAT_ACK); |
5972fa15 MT |
948 | noack_success = !!(info->flags & |
949 | IEEE80211_TX_STAT_NOACK_TRANSMITTED); | |
71f2c347 MH |
950 | |
951 | /* mesh Peer Service Period support */ | |
952 | if (ieee80211_vif_is_mesh(&sta->sdata->vif) && | |
953 | ieee80211_is_data_qos(fc)) | |
954 | ieee80211_mpsp_trigger_process( | |
955 | ieee80211_get_qos_ctl(hdr), sta, true, acked); | |
956 | ||
30686bf7 | 957 | if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL) && |
00a9a6d1 | 958 | (ieee80211_is_data(hdr->frame_control)) && |
0c869808 | 959 | (rates_idx != -1)) |
046d2e7c | 960 | sta->deflink.tx_stats.last_rate = |
e5a9f8d0 | 961 | info->status.rates[rates_idx]; |
0c869808 | 962 | |
fe7a5d5c JB |
963 | if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) && |
964 | (ieee80211_is_data_qos(fc))) { | |
79c892b8 | 965 | u16 ssn; |
fe7a5d5c JB |
966 | u8 *qc; |
967 | ||
968 | qc = ieee80211_get_qos_ctl(hdr); | |
969 | tid = qc[0] & 0xf; | |
970 | ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10) | |
971 | & IEEE80211_SCTL_SEQ); | |
8c771244 | 972 | ieee80211_send_bar(&sta->sdata->vif, hdr->addr1, |
fe7a5d5c | 973 | tid, ssn); |
79c892b8 JB |
974 | } else if (ieee80211_is_data_qos(fc)) { |
975 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
976 | ||
977 | tid = qc[0] & 0xf; | |
fe7a5d5c JB |
978 | } |
979 | ||
e69deded | 980 | if (!acked && ieee80211_is_back_req(fc)) { |
79c892b8 | 981 | u16 control; |
7107676a | 982 | |
e69deded | 983 | /* |
7107676a FF |
984 | * BAR failed, store the last SSN and retry sending |
985 | * the BAR when the next unicast transmission on the | |
986 | * same TID succeeds. | |
e69deded HS |
987 | */ |
988 | bar = (struct ieee80211_bar *) skb->data; | |
7107676a FF |
989 | control = le16_to_cpu(bar->control); |
990 | if (!(control & IEEE80211_BAR_CTRL_MULTI_TID)) { | |
f0425bed FF |
991 | u16 ssn = le16_to_cpu(bar->start_seq_num); |
992 | ||
7107676a | 993 | tid = (control & |
e69deded HS |
994 | IEEE80211_BAR_CTRL_TID_INFO_MASK) >> |
995 | IEEE80211_BAR_CTRL_TID_INFO_SHIFT; | |
f0425bed | 996 | |
8df6b7b1 | 997 | ieee80211_set_bar_pending(sta, tid, ssn); |
e69deded HS |
998 | } |
999 | } | |
1000 | ||
fe7a5d5c JB |
1001 | if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) { |
1002 | ieee80211_handle_filtered_frame(local, sta, skb); | |
fe7a5d5c | 1003 | return; |
3318111c | 1004 | } else if (ieee80211_is_data_present(fc)) { |
5972fa15 | 1005 | if (!acked && !noack_success) |
046d2e7c | 1006 | sta->deflink.status_stats.msdu_failed[tid]++; |
e5a9f8d0 | 1007 | |
046d2e7c | 1008 | sta->deflink.status_stats.msdu_retries[tid] += |
3318111c | 1009 | retry_count; |
fe7a5d5c JB |
1010 | } |
1011 | ||
04ac3c0e | 1012 | if (!(info->flags & IEEE80211_TX_CTL_INJECTED) && acked) |
0f78231b | 1013 | ieee80211_frame_acked(sta, skb); |
99ba2a14 | 1014 | |
fe7a5d5c JB |
1015 | } |
1016 | ||
fe7a5d5c JB |
1017 | /* SNMP counters |
1018 | * Fragments are passed to low-level drivers as separate skbs, so these | |
1019 | * are actually fragments, not frames. Update frame counters only for | |
1020 | * the first fragment of the frame. */ | |
5cf16616 SM |
1021 | if ((info->flags & IEEE80211_TX_STAT_ACK) || |
1022 | (info->flags & IEEE80211_TX_STAT_NOACK_TRANSMITTED)) { | |
adf5ace5 | 1023 | if (ieee80211_is_first_frag(hdr->seq_ctrl)) { |
c206ca67 | 1024 | I802_DEBUG_INC(local->dot11TransmittedFrameCount); |
85b89af0 | 1025 | if (is_multicast_ether_addr(ieee80211_get_DA(hdr))) |
c206ca67 | 1026 | I802_DEBUG_INC(local->dot11MulticastTransmittedFrameCount); |
fe7a5d5c | 1027 | if (retry_count > 0) |
c206ca67 | 1028 | I802_DEBUG_INC(local->dot11RetryCount); |
fe7a5d5c | 1029 | if (retry_count > 1) |
c206ca67 | 1030 | I802_DEBUG_INC(local->dot11MultipleRetryCount); |
fe7a5d5c JB |
1031 | } |
1032 | ||
1033 | /* This counter shall be incremented for an acknowledged MPDU | |
1034 | * with an individual address in the address 1 field or an MPDU | |
1035 | * with a multicast address in the address 1 field of type Data | |
1036 | * or Management. */ | |
1037 | if (!is_multicast_ether_addr(hdr->addr1) || | |
adf5ace5 HS |
1038 | ieee80211_is_data(fc) || |
1039 | ieee80211_is_mgmt(fc)) | |
c206ca67 | 1040 | I802_DEBUG_INC(local->dot11TransmittedFragmentCount); |
fe7a5d5c | 1041 | } else { |
adf5ace5 | 1042 | if (ieee80211_is_first_frag(hdr->seq_ctrl)) |
c206ca67 | 1043 | I802_DEBUG_INC(local->dot11FailedCount); |
fe7a5d5c JB |
1044 | } |
1045 | ||
30b2f0be | 1046 | if (ieee80211_is_any_nullfunc(fc) && |
08a5bdde | 1047 | ieee80211_has_pm(fc) && |
30686bf7 | 1048 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) && |
375177bf VN |
1049 | !(info->flags & IEEE80211_TX_CTL_INJECTED) && |
1050 | local->ps_sdata && !(local->scanning)) { | |
6e899fa0 | 1051 | if (info->flags & IEEE80211_TX_STAT_ACK) |
375177bf VN |
1052 | local->ps_sdata->u.mgd.flags |= |
1053 | IEEE80211_STA_NULLFUNC_ACKED; | |
6e899fa0 BD |
1054 | mod_timer(&local->dynamic_ps_timer, |
1055 | jiffies + msecs_to_jiffies(10)); | |
375177bf VN |
1056 | } |
1057 | ||
f9202638 | 1058 | ieee80211_report_used_skb(local, skb, false, status->ack_hwtstamp); |
a729cff8 | 1059 | |
fe7a5d5c JB |
1060 | /* this was a transmitted frame, but now we want to reuse it */ |
1061 | skb_orphan(skb); | |
1062 | ||
eaf55530 FF |
1063 | /* Need to make a copy before skb->cb gets cleared */ |
1064 | send_to_cooked = !!(info->flags & IEEE80211_TX_CTL_INJECTED) || | |
adf5ace5 | 1065 | !(ieee80211_is_data(fc)); |
eaf55530 | 1066 | |
fe7a5d5c JB |
1067 | /* |
1068 | * This is a bit racy but we can avoid a lot of work | |
1069 | * with this test... | |
1070 | */ | |
eaf55530 | 1071 | if (!local->monitors && (!send_to_cooked || !local->cooked_mntrs)) { |
f02dff93 FF |
1072 | if (status->free_list) |
1073 | list_add_tail(&skb->list, status->free_list); | |
1074 | else | |
1075 | dev_kfree_skb(skb); | |
fe7a5d5c JB |
1076 | return; |
1077 | } | |
1078 | ||
4dc792b8 | 1079 | /* send to monitor interfaces */ |
e5c0ee01 | 1080 | ieee80211_tx_monitor(local, skb, retry_count, shift, |
b7b2e8ca | 1081 | send_to_cooked, status); |
fe7a5d5c | 1082 | } |
5fe49a9d FF |
1083 | |
1084 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) | |
1085 | { | |
1086 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
1087 | struct ieee80211_local *local = hw_to_local(hw); | |
1088 | struct ieee80211_tx_status status = { | |
1089 | .skb = skb, | |
1090 | .info = IEEE80211_SKB_CB(skb), | |
1091 | }; | |
5fe49a9d FF |
1092 | struct sta_info *sta; |
1093 | ||
1094 | rcu_read_lock(); | |
1095 | ||
5072f73c THJ |
1096 | sta = sta_info_get_by_addrs(local, hdr->addr1, hdr->addr2); |
1097 | if (sta) | |
5fe49a9d | 1098 | status.sta = &sta->sta; |
5fe49a9d | 1099 | |
3318111c | 1100 | ieee80211_tx_status_ext(hw, &status); |
5fe49a9d FF |
1101 | rcu_read_unlock(); |
1102 | } | |
fe7a5d5c | 1103 | EXPORT_SYMBOL(ieee80211_tx_status); |
8178d38b | 1104 | |
5fe49a9d FF |
1105 | void ieee80211_tx_status_ext(struct ieee80211_hw *hw, |
1106 | struct ieee80211_tx_status *status) | |
eefebd31 FF |
1107 | { |
1108 | struct ieee80211_local *local = hw_to_local(hw); | |
5fe49a9d FF |
1109 | struct ieee80211_tx_info *info = status->info; |
1110 | struct ieee80211_sta *pubsta = status->sta; | |
a260e495 | 1111 | struct sk_buff *skb = status->skb; |
a260e495 | 1112 | struct sta_info *sta = NULL; |
3318111c | 1113 | int rates_idx, retry_count; |
ea5907db | 1114 | bool acked, noack_success, ack_signal_valid; |
a260e495 | 1115 | u16 tx_time_est; |
eefebd31 | 1116 | |
8ed37e79 FF |
1117 | if (pubsta) { |
1118 | sta = container_of(pubsta, struct sta_info, sta); | |
1119 | ||
44fa75f2 JJ |
1120 | if (status->n_rates) |
1121 | sta->deflink.tx_stats.last_rate_info = | |
1122 | status->rates[status->n_rates - 1].rate_idx; | |
8ed37e79 FF |
1123 | } |
1124 | ||
23e9f1ef FF |
1125 | if (skb && (tx_time_est = |
1126 | ieee80211_info_get_tx_time_est(IEEE80211_SKB_CB(skb))) > 0) { | |
1127 | /* Do this here to avoid the expensive lookup of the sta | |
1128 | * in ieee80211_report_used_skb(). | |
1129 | */ | |
1130 | ieee80211_sta_update_pending_airtime(local, sta, | |
1131 | skb_get_queue_mapping(skb), | |
1132 | tx_time_est, | |
1133 | true); | |
1134 | ieee80211_info_set_tx_time_est(IEEE80211_SKB_CB(skb), 0); | |
1135 | } | |
1136 | ||
1137 | if (!status->info) | |
1138 | goto free; | |
1139 | ||
3318111c | 1140 | rates_idx = ieee80211_tx_get_rates(hw, info, &retry_count); |
eefebd31 | 1141 | |
eefebd31 FF |
1142 | acked = !!(info->flags & IEEE80211_TX_STAT_ACK); |
1143 | noack_success = !!(info->flags & IEEE80211_TX_STAT_NOACK_TRANSMITTED); | |
ea5907db AS |
1144 | ack_signal_valid = |
1145 | !!(info->status.flags & IEEE80211_TX_STATUS_ACK_SIGNAL_VALID); | |
eefebd31 FF |
1146 | |
1147 | if (pubsta) { | |
e3f25908 FF |
1148 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
1149 | ||
5972fa15 | 1150 | if (!acked && !noack_success) |
046d2e7c S |
1151 | sta->deflink.status_stats.retry_failed++; |
1152 | sta->deflink.status_stats.retry_count += retry_count; | |
eefebd31 | 1153 | |
3318111c | 1154 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { |
e3f25908 FF |
1155 | if (sdata->vif.type == NL80211_IFTYPE_STATION && |
1156 | skb && !(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP)) | |
1157 | ieee80211_sta_tx_notify(sdata, (void *) skb->data, | |
1158 | acked, info->status.tx_time); | |
1159 | ||
3318111c | 1160 | if (acked) { |
046d2e7c | 1161 | sta->deflink.status_stats.last_ack = jiffies; |
eefebd31 | 1162 | |
046d2e7c S |
1163 | if (sta->deflink.status_stats.lost_packets) |
1164 | sta->deflink.status_stats.lost_packets = 0; | |
eefebd31 | 1165 | |
3318111c | 1166 | /* Track when last packet was ACKed */ |
046d2e7c | 1167 | sta->deflink.status_stats.last_pkt_time = jiffies; |
3318111c | 1168 | |
e3f25908 FF |
1169 | /* Reset connection monitor */ |
1170 | if (sdata->vif.type == NL80211_IFTYPE_STATION && | |
1171 | unlikely(sdata->u.mgd.probe_send_count > 0)) | |
1172 | sdata->u.mgd.probe_send_count = 0; | |
1173 | ||
ea5907db | 1174 | if (ack_signal_valid) { |
046d2e7c | 1175 | sta->deflink.status_stats.last_ack_signal = |
3318111c | 1176 | (s8)info->status.ack_signal; |
046d2e7c S |
1177 | sta->deflink.status_stats.ack_signal_filled = true; |
1178 | ewma_avg_signal_add(&sta->deflink.status_stats.avg_ack_signal, | |
3318111c FF |
1179 | -info->status.ack_signal); |
1180 | } | |
1181 | } else if (test_sta_flag(sta, WLAN_STA_PS_STA)) { | |
1d182885 FF |
1182 | /* |
1183 | * The STA is in power save mode, so assume | |
1184 | * that this TX packet failed because of that. | |
1185 | */ | |
1186 | if (skb) | |
1187 | ieee80211_handle_filtered_frame(local, sta, skb); | |
3318111c FF |
1188 | return; |
1189 | } else if (noack_success) { | |
1190 | /* nothing to do here, do not account as lost */ | |
1191 | } else { | |
1192 | ieee80211_lost_packet(sta, info); | |
1193 | } | |
eefebd31 FF |
1194 | } |
1195 | ||
e5c0ee01 | 1196 | rate_control_tx_status(local, status); |
c4205510 YCP |
1197 | if (ieee80211_vif_is_mesh(&sta->sdata->vif)) |
1198 | ieee80211s_update_metric(local, sta, status); | |
eefebd31 FF |
1199 | } |
1200 | ||
a260e495 | 1201 | if (skb && !(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP)) |
3318111c FF |
1202 | return __ieee80211_tx_status(hw, status, rates_idx, |
1203 | retry_count); | |
1204 | ||
eefebd31 FF |
1205 | if (acked || noack_success) { |
1206 | I802_DEBUG_INC(local->dot11TransmittedFrameCount); | |
1207 | if (!pubsta) | |
1208 | I802_DEBUG_INC(local->dot11MulticastTransmittedFrameCount); | |
1209 | if (retry_count > 0) | |
1210 | I802_DEBUG_INC(local->dot11RetryCount); | |
1211 | if (retry_count > 1) | |
1212 | I802_DEBUG_INC(local->dot11MultipleRetryCount); | |
1213 | } else { | |
1214 | I802_DEBUG_INC(local->dot11FailedCount); | |
1215 | } | |
a260e495 | 1216 | |
23e9f1ef | 1217 | free: |
a260e495 FF |
1218 | if (!skb) |
1219 | return; | |
1220 | ||
f9202638 | 1221 | ieee80211_report_used_skb(local, skb, false, status->ack_hwtstamp); |
f02dff93 FF |
1222 | if (status->free_list) |
1223 | list_add_tail(&skb->list, status->free_list); | |
1224 | else | |
1225 | dev_kfree_skb(skb); | |
eefebd31 | 1226 | } |
5fe49a9d | 1227 | EXPORT_SYMBOL(ieee80211_tx_status_ext); |
eefebd31 | 1228 | |
f8252e7b AK |
1229 | void ieee80211_tx_rate_update(struct ieee80211_hw *hw, |
1230 | struct ieee80211_sta *pubsta, | |
1231 | struct ieee80211_tx_info *info) | |
1232 | { | |
1233 | struct ieee80211_local *local = hw_to_local(hw); | |
f8252e7b AK |
1234 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); |
1235 | struct ieee80211_tx_status status = { | |
1236 | .info = info, | |
1237 | .sta = pubsta, | |
1238 | }; | |
1239 | ||
e5c0ee01 | 1240 | rate_control_tx_status(local, &status); |
f8252e7b AK |
1241 | |
1242 | if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) | |
046d2e7c | 1243 | sta->deflink.tx_stats.last_rate = info->status.rates[0]; |
f8252e7b AK |
1244 | } |
1245 | EXPORT_SYMBOL(ieee80211_tx_rate_update); | |
1246 | ||
8178d38b AN |
1247 | void ieee80211_report_low_ack(struct ieee80211_sta *pubsta, u32 num_packets) |
1248 | { | |
1249 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1250 | cfg80211_cqm_pktloss_notify(sta->sdata->dev, sta->sta.addr, | |
1251 | num_packets, GFP_ATOMIC); | |
1252 | } | |
1253 | EXPORT_SYMBOL(ieee80211_report_low_ack); | |
6096de7f JB |
1254 | |
1255 | void ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb) | |
1256 | { | |
a729cff8 | 1257 | struct ieee80211_local *local = hw_to_local(hw); |
f9202638 | 1258 | ktime_t kt = ktime_set(0, 0); |
a729cff8 | 1259 | |
f9202638 | 1260 | ieee80211_report_used_skb(local, skb, true, kt); |
6096de7f JB |
1261 | dev_kfree_skb_any(skb); |
1262 | } | |
1263 | EXPORT_SYMBOL(ieee80211_free_txskb); | |
1f98ab7f FF |
1264 | |
1265 | void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, | |
1266 | struct sk_buff_head *skbs) | |
1267 | { | |
1268 | struct sk_buff *skb; | |
1269 | ||
1270 | while ((skb = __skb_dequeue(skbs))) | |
1271 | ieee80211_free_txskb(hw, skb); | |
1272 | } |