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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 |
fe7a5d5c JB |
8 | */ |
9 | ||
bc3b2d7f | 10 | #include <linux/export.h> |
888d04df | 11 | #include <linux/etherdevice.h> |
fe7a5d5c | 12 | #include <net/mac80211.h> |
d26ad377 | 13 | #include <asm/unaligned.h> |
fe7a5d5c JB |
14 | #include "ieee80211_i.h" |
15 | #include "rate.h" | |
16 | #include "mesh.h" | |
17 | #include "led.h" | |
948d887d | 18 | #include "wme.h" |
fe7a5d5c JB |
19 | |
20 | ||
21 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, | |
22 | struct sk_buff *skb) | |
23 | { | |
24 | struct ieee80211_local *local = hw_to_local(hw); | |
25 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
26 | int tmp; | |
27 | ||
28 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; | |
29 | skb_queue_tail(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS ? | |
30 | &local->skb_queue : &local->skb_queue_unreliable, skb); | |
31 | tmp = skb_queue_len(&local->skb_queue) + | |
32 | skb_queue_len(&local->skb_queue_unreliable); | |
33 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && | |
34 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
c3e7724b | 35 | ieee80211_free_txskb(hw, skb); |
fe7a5d5c JB |
36 | tmp--; |
37 | I802_DEBUG_INC(local->tx_status_drop); | |
38 | } | |
39 | tasklet_schedule(&local->tasklet); | |
40 | } | |
41 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); | |
42 | ||
43 | static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, | |
44 | struct sta_info *sta, | |
45 | struct sk_buff *skb) | |
46 | { | |
47 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
948d887d JB |
48 | struct ieee80211_hdr *hdr = (void *)skb->data; |
49 | int ac; | |
fe7a5d5c | 50 | |
890030d3 FF |
51 | if (info->flags & (IEEE80211_TX_CTL_NO_PS_BUFFER | |
52 | IEEE80211_TX_CTL_AMPDU)) { | |
da629cf1 HS |
53 | ieee80211_free_txskb(&local->hw, skb); |
54 | return; | |
55 | } | |
56 | ||
697e6a0f JB |
57 | /* |
58 | * This skb 'survived' a round-trip through the driver, and | |
59 | * hopefully the driver didn't mangle it too badly. However, | |
77c2061d | 60 | * we can definitely not rely on the control information |
c6fcf6bc JB |
61 | * being correct. Clear it so we don't get junk there, and |
62 | * indicate that it needs new processing, but must not be | |
63 | * modified/encrypted again. | |
697e6a0f JB |
64 | */ |
65 | memset(&info->control, 0, sizeof(info->control)); | |
18c94907 JB |
66 | |
67 | info->control.jiffies = jiffies; | |
68 | info->control.vif = &sta->sdata->vif; | |
cc20ff2c FF |
69 | info->control.flags |= IEEE80211_TX_INTCFL_NEED_TXPROCESSING; |
70 | info->flags |= IEEE80211_TX_INTFL_RETRANSMISSION; | |
eb7d3066 | 71 | info->flags &= ~IEEE80211_TX_TEMPORARY_FLAGS; |
697e6a0f | 72 | |
e5a9f8d0 | 73 | sta->status_stats.filtered++; |
fe7a5d5c | 74 | |
8a8656fa JB |
75 | /* |
76 | * Clear more-data bit on filtered frames, it might be set | |
77 | * but later frames might time out so it might have to be | |
78 | * clear again ... It's all rather unlikely (this frame | |
79 | * should time out first, right?) but let's not confuse | |
80 | * peers unnecessarily. | |
81 | */ | |
82 | if (hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) | |
83 | hdr->frame_control &= ~cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
84 | ||
948d887d | 85 | if (ieee80211_is_data_qos(hdr->frame_control)) { |
47086fc5 JB |
86 | u8 *p = ieee80211_get_qos_ctl(hdr); |
87 | int tid = *p & IEEE80211_QOS_CTL_TID_MASK; | |
88 | ||
89 | /* | |
90 | * Clear EOSP if set, this could happen e.g. | |
91 | * if an absence period (us being a P2P GO) | |
92 | * shortens the SP. | |
93 | */ | |
94 | if (*p & IEEE80211_QOS_CTL_EOSP) | |
95 | *p &= ~IEEE80211_QOS_CTL_EOSP; | |
731977e9 | 96 | ac = ieee80211_ac_from_tid(tid); |
948d887d JB |
97 | } else { |
98 | ac = IEEE80211_AC_BE; | |
99 | } | |
100 | ||
fe7a5d5c JB |
101 | /* |
102 | * Clear the TX filter mask for this STA when sending the next | |
103 | * packet. If the STA went to power save mode, this will happen | |
104 | * when it wakes up for the next time. | |
105 | */ | |
c2c98fde | 106 | set_sta_flag(sta, WLAN_STA_CLEAR_PS_FILT); |
f7418bc1 | 107 | ieee80211_clear_fast_xmit(sta); |
fe7a5d5c JB |
108 | |
109 | /* | |
110 | * This code races in the following way: | |
111 | * | |
112 | * (1) STA sends frame indicating it will go to sleep and does so | |
113 | * (2) hardware/firmware adds STA to filter list, passes frame up | |
114 | * (3) hardware/firmware processes TX fifo and suppresses a frame | |
115 | * (4) we get TX status before having processed the frame and | |
116 | * knowing that the STA has gone to sleep. | |
117 | * | |
118 | * This is actually quite unlikely even when both those events are | |
119 | * processed from interrupts coming in quickly after one another or | |
120 | * even at the same time because we queue both TX status events and | |
121 | * RX frames to be processed by a tasklet and process them in the | |
122 | * same order that they were received or TX status last. Hence, there | |
123 | * is no race as long as the frame RX is processed before the next TX | |
124 | * status, which drivers can ensure, see below. | |
125 | * | |
126 | * Note that this can only happen if the hardware or firmware can | |
127 | * actually add STAs to the filter list, if this is done by the | |
128 | * driver in response to set_tim() (which will only reduce the race | |
129 | * this whole filtering tries to solve, not completely solve it) | |
130 | * this situation cannot happen. | |
131 | * | |
132 | * To completely solve this race drivers need to make sure that they | |
133 | * (a) don't mix the irq-safe/not irq-safe TX status/RX processing | |
134 | * functions and | |
135 | * (b) always process RX events before TX status events if ordering | |
136 | * can be unknown, for example with different interrupt status | |
137 | * bits. | |
d057e5a3 AN |
138 | * (c) if PS mode transitions are manual (i.e. the flag |
139 | * %IEEE80211_HW_AP_LINK_PS is set), always process PS state | |
140 | * changes before calling TX status events if ordering can be | |
141 | * unknown. | |
fe7a5d5c | 142 | */ |
c2c98fde | 143 | if (test_sta_flag(sta, WLAN_STA_PS_STA) && |
948d887d JB |
144 | skb_queue_len(&sta->tx_filtered[ac]) < STA_MAX_TX_BUFFER) { |
145 | skb_queue_tail(&sta->tx_filtered[ac], skb); | |
c868cb35 | 146 | sta_info_recalc_tim(sta); |
60750397 JB |
147 | |
148 | if (!timer_pending(&local->sta_cleanup)) | |
149 | mod_timer(&local->sta_cleanup, | |
150 | round_jiffies(jiffies + | |
151 | STA_INFO_CLEANUP_INTERVAL)); | |
fe7a5d5c JB |
152 | return; |
153 | } | |
154 | ||
c2c98fde | 155 | if (!test_sta_flag(sta, WLAN_STA_PS_STA) && |
fe7a5d5c JB |
156 | !(info->flags & IEEE80211_TX_INTFL_RETRIED)) { |
157 | /* Software retry the packet once */ | |
158 | info->flags |= IEEE80211_TX_INTFL_RETRIED; | |
159 | ieee80211_add_pending_skb(local, skb); | |
160 | return; | |
161 | } | |
162 | ||
bdcbd8e0 JB |
163 | ps_dbg_ratelimited(sta->sdata, |
164 | "dropped TX filtered frame, queue_len=%d PS=%d @%lu\n", | |
165 | skb_queue_len(&sta->tx_filtered[ac]), | |
166 | !!test_sta_flag(sta, WLAN_STA_PS_STA), jiffies); | |
c3e7724b | 167 | ieee80211_free_txskb(&local->hw, skb); |
fe7a5d5c JB |
168 | } |
169 | ||
f0425bed FF |
170 | static void ieee80211_check_pending_bar(struct sta_info *sta, u8 *addr, u8 tid) |
171 | { | |
172 | struct tid_ampdu_tx *tid_tx; | |
173 | ||
174 | tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]); | |
175 | if (!tid_tx || !tid_tx->bar_pending) | |
176 | return; | |
177 | ||
178 | tid_tx->bar_pending = false; | |
8c771244 | 179 | ieee80211_send_bar(&sta->sdata->vif, addr, tid, tid_tx->failed_bar_ssn); |
f0425bed FF |
180 | } |
181 | ||
0f78231b JB |
182 | static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb) |
183 | { | |
184 | struct ieee80211_mgmt *mgmt = (void *) skb->data; | |
185 | struct ieee80211_local *local = sta->local; | |
186 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
0c5b9329 | 187 | |
f0425bed FF |
188 | 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 | } | |
195 | ||
0f78231b | 196 | if (ieee80211_is_action(mgmt->frame_control) && |
cf147085 | 197 | !ieee80211_has_protected(mgmt->frame_control) && |
0f78231b | 198 | mgmt->u.action.category == WLAN_CATEGORY_HT && |
04ecd257 | 199 | mgmt->u.action.u.ht_smps.action == WLAN_HT_ACTION_SMPS && |
04ecd257 | 200 | ieee80211_sdata_running(sdata)) { |
687da132 EG |
201 | enum ieee80211_smps_mode smps_mode; |
202 | ||
0f78231b JB |
203 | switch (mgmt->u.action.u.ht_smps.smps_control) { |
204 | case WLAN_HT_SMPS_CONTROL_DYNAMIC: | |
687da132 | 205 | smps_mode = IEEE80211_SMPS_DYNAMIC; |
0f78231b JB |
206 | break; |
207 | case WLAN_HT_SMPS_CONTROL_STATIC: | |
687da132 | 208 | smps_mode = IEEE80211_SMPS_STATIC; |
0f78231b JB |
209 | break; |
210 | case WLAN_HT_SMPS_CONTROL_DISABLED: | |
211 | default: /* shouldn't happen since we don't send that */ | |
687da132 | 212 | smps_mode = IEEE80211_SMPS_OFF; |
0f78231b JB |
213 | break; |
214 | } | |
215 | ||
687da132 EG |
216 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
217 | /* | |
218 | * This update looks racy, but isn't -- if we come | |
219 | * here we've definitely got a station that we're | |
220 | * talking to, and on a managed interface that can | |
221 | * only be the AP. And the only other place updating | |
222 | * this variable in managed mode is before association. | |
223 | */ | |
224 | sdata->smps_mode = smps_mode; | |
225 | ieee80211_queue_work(&local->hw, &sdata->recalc_smps); | |
226 | } else if (sdata->vif.type == NL80211_IFTYPE_AP || | |
227 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
228 | sta->known_smps_mode = smps_mode; | |
229 | } | |
0f78231b JB |
230 | } |
231 | } | |
232 | ||
f0425bed FF |
233 | static void ieee80211_set_bar_pending(struct sta_info *sta, u8 tid, u16 ssn) |
234 | { | |
235 | struct tid_ampdu_tx *tid_tx; | |
236 | ||
237 | tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]); | |
238 | if (!tid_tx) | |
239 | return; | |
240 | ||
241 | tid_tx->failed_bar_ssn = ssn; | |
242 | tid_tx->bar_pending = true; | |
243 | } | |
244 | ||
3d07ffca JC |
245 | static int ieee80211_tx_radiotap_len(struct ieee80211_tx_info *info, |
246 | struct ieee80211_tx_status *status) | |
a2fe8166 HS |
247 | { |
248 | int len = sizeof(struct ieee80211_radiotap_header); | |
249 | ||
250 | /* IEEE80211_RADIOTAP_RATE rate */ | |
dc649d64 JC |
251 | if (status && status->rate && !(status->rate->flags & |
252 | (RATE_INFO_FLAGS_MCS | | |
2a38075c AAL |
253 | RATE_INFO_FLAGS_DMG | |
254 | RATE_INFO_FLAGS_EDMG | | |
dc649d64 JC |
255 | RATE_INFO_FLAGS_VHT_MCS | |
256 | RATE_INFO_FLAGS_HE_MCS))) | |
257 | len += 2; | |
258 | else if (info->status.rates[0].idx >= 0 && | |
259 | !(info->status.rates[0].flags & | |
260 | (IEEE80211_TX_RC_MCS | IEEE80211_TX_RC_VHT_MCS))) | |
a2fe8166 HS |
261 | len += 2; |
262 | ||
263 | /* IEEE80211_RADIOTAP_TX_FLAGS */ | |
264 | len += 2; | |
265 | ||
266 | /* IEEE80211_RADIOTAP_DATA_RETRIES */ | |
267 | len += 1; | |
268 | ||
a8241310 KB |
269 | /* IEEE80211_RADIOTAP_MCS |
270 | * IEEE80211_RADIOTAP_VHT */ | |
3d07ffca JC |
271 | if (status && status->rate) { |
272 | if (status->rate->flags & RATE_INFO_FLAGS_MCS) | |
273 | len += 3; | |
274 | else if (status->rate->flags & RATE_INFO_FLAGS_VHT_MCS) | |
275 | len = ALIGN(len, 2) + 12; | |
276 | else if (status->rate->flags & RATE_INFO_FLAGS_HE_MCS) | |
277 | len = ALIGN(len, 2) + 12; | |
278 | } else if (info->status.rates[0].idx >= 0) { | |
a8241310 KB |
279 | if (info->status.rates[0].flags & IEEE80211_TX_RC_MCS) |
280 | len += 3; | |
281 | else if (info->status.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) | |
282 | len = ALIGN(len, 2) + 12; | |
283 | } | |
7f2a5e21 | 284 | |
a2fe8166 HS |
285 | return len; |
286 | } | |
287 | ||
2103dec1 | 288 | static void |
a8241310 KB |
289 | ieee80211_add_tx_radiotap_header(struct ieee80211_local *local, |
290 | struct ieee80211_supported_band *sband, | |
2103dec1 | 291 | struct sk_buff *skb, int retry_count, |
3d07ffca JC |
292 | int rtap_len, int shift, |
293 | struct ieee80211_tx_status *status) | |
a2fe8166 HS |
294 | { |
295 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
296 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
297 | struct ieee80211_radiotap_header *rthdr; | |
298 | unsigned char *pos; | |
3d07ffca | 299 | u16 legacy_rate = 0; |
9c8f2c42 | 300 | u16 txflags; |
a2fe8166 | 301 | |
d58ff351 | 302 | rthdr = skb_push(skb, rtap_len); |
a2fe8166 HS |
303 | |
304 | memset(rthdr, 0, rtap_len); | |
305 | rthdr->it_len = cpu_to_le16(rtap_len); | |
306 | rthdr->it_present = | |
307 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | | |
308 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES)); | |
309 | pos = (unsigned char *)(rthdr + 1); | |
310 | ||
311 | /* | |
312 | * XXX: Once radiotap gets the bitmap reset thing the vendor | |
313 | * extensions proposal contains, we can actually report | |
314 | * the whole set of tries we did. | |
315 | */ | |
316 | ||
317 | /* IEEE80211_RADIOTAP_RATE */ | |
2103dec1 | 318 | |
8db6e736 JC |
319 | if (status && status->rate) { |
320 | if (!(status->rate->flags & (RATE_INFO_FLAGS_MCS | | |
2a38075c AAL |
321 | RATE_INFO_FLAGS_DMG | |
322 | RATE_INFO_FLAGS_EDMG | | |
8db6e736 JC |
323 | RATE_INFO_FLAGS_VHT_MCS | |
324 | RATE_INFO_FLAGS_HE_MCS))) | |
325 | legacy_rate = status->rate->legacy; | |
326 | } else if (info->status.rates[0].idx >= 0 && | |
3d07ffca JC |
327 | !(info->status.rates[0].flags & (IEEE80211_TX_RC_MCS | |
328 | IEEE80211_TX_RC_VHT_MCS))) | |
329 | legacy_rate = | |
330 | sband->bitrates[info->status.rates[0].idx].bitrate; | |
331 | ||
332 | if (legacy_rate) { | |
a2fe8166 | 333 | rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_RATE); |
3d07ffca | 334 | *pos = DIV_ROUND_UP(legacy_rate, 5 * (1 << shift)); |
a2fe8166 HS |
335 | /* padding for tx flags */ |
336 | pos += 2; | |
337 | } | |
338 | ||
339 | /* IEEE80211_RADIOTAP_TX_FLAGS */ | |
340 | txflags = 0; | |
341 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && | |
342 | !is_multicast_ether_addr(hdr->addr1)) | |
9c8f2c42 | 343 | txflags |= IEEE80211_RADIOTAP_F_TX_FAIL; |
a2fe8166 | 344 | |
311ab8e1 | 345 | if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) |
9c8f2c42 | 346 | txflags |= IEEE80211_RADIOTAP_F_TX_CTS; |
311ab8e1 | 347 | if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) |
9c8f2c42 | 348 | txflags |= IEEE80211_RADIOTAP_F_TX_RTS; |
a2fe8166 HS |
349 | |
350 | put_unaligned_le16(txflags, pos); | |
351 | pos += 2; | |
352 | ||
353 | /* IEEE80211_RADIOTAP_DATA_RETRIES */ | |
354 | /* for now report the total retry_count */ | |
355 | *pos = retry_count; | |
356 | pos++; | |
7f2a5e21 | 357 | |
3d07ffca JC |
358 | if (status && status->rate && |
359 | (status->rate->flags & RATE_INFO_FLAGS_MCS)) { | |
360 | rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_MCS); | |
361 | pos[0] = IEEE80211_RADIOTAP_MCS_HAVE_MCS | | |
362 | IEEE80211_RADIOTAP_MCS_HAVE_GI | | |
363 | IEEE80211_RADIOTAP_MCS_HAVE_BW; | |
364 | if (status->rate->flags & RATE_INFO_FLAGS_SHORT_GI) | |
365 | pos[1] |= IEEE80211_RADIOTAP_MCS_SGI; | |
366 | if (status->rate->bw == RATE_INFO_BW_40) | |
367 | pos[1] |= IEEE80211_RADIOTAP_MCS_BW_40; | |
368 | pos[2] = status->rate->mcs; | |
369 | pos += 3; | |
370 | } else if (status && status->rate && | |
371 | (status->rate->flags & RATE_INFO_FLAGS_VHT_MCS)) { | |
372 | u16 known = local->hw.radiotap_vht_details & | |
373 | (IEEE80211_RADIOTAP_VHT_KNOWN_GI | | |
374 | IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH); | |
375 | ||
376 | rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_VHT); | |
377 | ||
378 | /* required alignment from rthdr */ | |
379 | pos = (u8 *)rthdr + ALIGN(pos - (u8 *)rthdr, 2); | |
380 | ||
381 | /* u16 known - IEEE80211_RADIOTAP_VHT_KNOWN_* */ | |
382 | put_unaligned_le16(known, pos); | |
383 | pos += 2; | |
384 | ||
385 | /* u8 flags - IEEE80211_RADIOTAP_VHT_FLAG_* */ | |
386 | if (status->rate->flags & RATE_INFO_FLAGS_SHORT_GI) | |
387 | *pos |= IEEE80211_RADIOTAP_VHT_FLAG_SGI; | |
388 | pos++; | |
389 | ||
390 | /* u8 bandwidth */ | |
391 | switch (status->rate->bw) { | |
392 | case RATE_INFO_BW_160: | |
393 | *pos = 11; | |
394 | break; | |
395 | case RATE_INFO_BW_80: | |
a027c304 | 396 | *pos = 4; |
3d07ffca JC |
397 | break; |
398 | case RATE_INFO_BW_40: | |
399 | *pos = 1; | |
400 | break; | |
401 | default: | |
402 | *pos = 0; | |
403 | break; | |
404 | } | |
3a00f081 | 405 | pos++; |
3d07ffca JC |
406 | |
407 | /* u8 mcs_nss[4] */ | |
408 | *pos = (status->rate->mcs << 4) | status->rate->nss; | |
409 | pos += 4; | |
410 | ||
411 | /* u8 coding */ | |
412 | pos++; | |
413 | /* u8 group_id */ | |
414 | pos++; | |
415 | /* u16 partial_aid */ | |
416 | pos += 2; | |
417 | } else if (status && status->rate && | |
418 | (status->rate->flags & RATE_INFO_FLAGS_HE_MCS)) { | |
419 | struct ieee80211_radiotap_he *he; | |
420 | ||
421 | rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_HE); | |
422 | ||
423 | /* required alignment from rthdr */ | |
424 | pos = (u8 *)rthdr + ALIGN(pos - (u8 *)rthdr, 2); | |
425 | he = (struct ieee80211_radiotap_he *)pos; | |
426 | ||
427 | he->data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_SU | | |
428 | IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN | | |
429 | IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN | | |
430 | IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN); | |
431 | ||
432 | he->data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN); | |
433 | ||
434 | #define HE_PREP(f, val) le16_encode_bits(val, IEEE80211_RADIOTAP_HE_##f) | |
435 | ||
436 | he->data6 |= HE_PREP(DATA6_NSTS, status->rate->nss); | |
437 | ||
438 | #define CHECK_GI(s) \ | |
439 | BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA5_GI_##s != \ | |
440 | (int)NL80211_RATE_INFO_HE_GI_##s) | |
441 | ||
442 | CHECK_GI(0_8); | |
443 | CHECK_GI(1_6); | |
444 | CHECK_GI(3_2); | |
445 | ||
446 | he->data3 |= HE_PREP(DATA3_DATA_MCS, status->rate->mcs); | |
447 | he->data3 |= HE_PREP(DATA3_DATA_DCM, status->rate->he_dcm); | |
448 | ||
449 | he->data5 |= HE_PREP(DATA5_GI, status->rate->he_gi); | |
450 | ||
451 | switch (status->rate->bw) { | |
452 | case RATE_INFO_BW_20: | |
453 | he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, | |
454 | IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_20MHZ); | |
455 | break; | |
456 | case RATE_INFO_BW_40: | |
457 | he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, | |
458 | IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_40MHZ); | |
459 | break; | |
460 | case RATE_INFO_BW_80: | |
461 | he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, | |
462 | IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_80MHZ); | |
463 | break; | |
464 | case RATE_INFO_BW_160: | |
465 | he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, | |
466 | IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_160MHZ); | |
467 | break; | |
468 | case RATE_INFO_BW_HE_RU: | |
469 | #define CHECK_RU_ALLOC(s) \ | |
470 | BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_##s##T != \ | |
471 | NL80211_RATE_INFO_HE_RU_ALLOC_##s + 4) | |
472 | ||
473 | CHECK_RU_ALLOC(26); | |
474 | CHECK_RU_ALLOC(52); | |
475 | CHECK_RU_ALLOC(106); | |
476 | CHECK_RU_ALLOC(242); | |
477 | CHECK_RU_ALLOC(484); | |
478 | CHECK_RU_ALLOC(996); | |
479 | CHECK_RU_ALLOC(2x996); | |
480 | ||
481 | he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, | |
482 | status->rate->he_ru_alloc + 4); | |
483 | break; | |
484 | default: | |
485 | WARN_ONCE(1, "Invalid SU BW %d\n", status->rate->bw); | |
486 | } | |
487 | ||
488 | pos += sizeof(struct ieee80211_radiotap_he); | |
489 | } | |
490 | ||
491 | if ((status && status->rate) || info->status.rates[0].idx < 0) | |
a8241310 KB |
492 | return; |
493 | ||
494 | /* IEEE80211_RADIOTAP_MCS | |
495 | * IEEE80211_RADIOTAP_VHT */ | |
496 | if (info->status.rates[0].flags & IEEE80211_TX_RC_MCS) { | |
7f2a5e21 HS |
497 | rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_MCS); |
498 | pos[0] = IEEE80211_RADIOTAP_MCS_HAVE_MCS | | |
499 | IEEE80211_RADIOTAP_MCS_HAVE_GI | | |
500 | IEEE80211_RADIOTAP_MCS_HAVE_BW; | |
501 | if (info->status.rates[0].flags & IEEE80211_TX_RC_SHORT_GI) | |
502 | pos[1] |= IEEE80211_RADIOTAP_MCS_SGI; | |
503 | if (info->status.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH) | |
504 | pos[1] |= IEEE80211_RADIOTAP_MCS_BW_40; | |
505 | if (info->status.rates[0].flags & IEEE80211_TX_RC_GREEN_FIELD) | |
506 | pos[1] |= IEEE80211_RADIOTAP_MCS_FMT_GF; | |
507 | pos[2] = info->status.rates[0].idx; | |
508 | pos += 3; | |
a8241310 KB |
509 | } else if (info->status.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) { |
510 | u16 known = local->hw.radiotap_vht_details & | |
511 | (IEEE80211_RADIOTAP_VHT_KNOWN_GI | | |
512 | IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH); | |
513 | ||
514 | rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_VHT); | |
515 | ||
516 | /* required alignment from rthdr */ | |
517 | pos = (u8 *)rthdr + ALIGN(pos - (u8 *)rthdr, 2); | |
7f2a5e21 | 518 | |
a8241310 KB |
519 | /* u16 known - IEEE80211_RADIOTAP_VHT_KNOWN_* */ |
520 | put_unaligned_le16(known, pos); | |
521 | pos += 2; | |
522 | ||
523 | /* u8 flags - IEEE80211_RADIOTAP_VHT_FLAG_* */ | |
524 | if (info->status.rates[0].flags & IEEE80211_TX_RC_SHORT_GI) | |
525 | *pos |= IEEE80211_RADIOTAP_VHT_FLAG_SGI; | |
526 | pos++; | |
527 | ||
528 | /* u8 bandwidth */ | |
529 | if (info->status.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH) | |
530 | *pos = 1; | |
531 | else if (info->status.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH) | |
532 | *pos = 4; | |
533 | else if (info->status.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH) | |
534 | *pos = 11; | |
535 | else /* IEEE80211_TX_RC_{20_MHZ_WIDTH,FIXME:DUP_DATA} */ | |
536 | *pos = 0; | |
537 | pos++; | |
538 | ||
539 | /* u8 mcs_nss[4] */ | |
540 | *pos = (ieee80211_rate_get_vht_mcs(&info->status.rates[0]) << 4) | | |
541 | ieee80211_rate_get_vht_nss(&info->status.rates[0]); | |
542 | pos += 4; | |
543 | ||
544 | /* u8 coding */ | |
545 | pos++; | |
546 | /* u8 group_id */ | |
547 | pos++; | |
548 | /* u16 partial_aid */ | |
549 | pos += 2; | |
550 | } | |
a2fe8166 HS |
551 | } |
552 | ||
1277b4a9 LK |
553 | /* |
554 | * Handles the tx for TDLS teardown frames. | |
555 | * If the frame wasn't ACKed by the peer - it will be re-sent through the AP | |
556 | */ | |
557 | static void ieee80211_tdls_td_tx_handle(struct ieee80211_local *local, | |
558 | struct ieee80211_sub_if_data *sdata, | |
559 | struct sk_buff *skb, u32 flags) | |
560 | { | |
561 | struct sk_buff *teardown_skb; | |
562 | struct sk_buff *orig_teardown_skb; | |
563 | bool is_teardown = false; | |
564 | ||
565 | /* Get the teardown data we need and free the lock */ | |
566 | spin_lock(&sdata->u.mgd.teardown_lock); | |
567 | teardown_skb = sdata->u.mgd.teardown_skb; | |
568 | orig_teardown_skb = sdata->u.mgd.orig_teardown_skb; | |
569 | if ((skb == orig_teardown_skb) && teardown_skb) { | |
570 | sdata->u.mgd.teardown_skb = NULL; | |
571 | sdata->u.mgd.orig_teardown_skb = NULL; | |
572 | is_teardown = true; | |
573 | } | |
574 | spin_unlock(&sdata->u.mgd.teardown_lock); | |
575 | ||
576 | if (is_teardown) { | |
577 | /* This mechanism relies on being able to get ACKs */ | |
30686bf7 | 578 | WARN_ON(!ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)); |
1277b4a9 LK |
579 | |
580 | /* Check if peer has ACKed */ | |
581 | if (flags & IEEE80211_TX_STAT_ACK) { | |
582 | dev_kfree_skb_any(teardown_skb); | |
583 | } else { | |
584 | tdls_dbg(sdata, | |
585 | "TDLS Resending teardown through AP\n"); | |
586 | ||
587 | ieee80211_subif_start_xmit(teardown_skb, skb->dev); | |
588 | } | |
589 | } | |
590 | } | |
591 | ||
b2eb0ee6 JB |
592 | static struct ieee80211_sub_if_data * |
593 | ieee80211_sdata_from_skb(struct ieee80211_local *local, struct sk_buff *skb) | |
594 | { | |
595 | struct ieee80211_sub_if_data *sdata; | |
596 | ||
597 | if (skb->dev) { | |
598 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
599 | if (!sdata->dev) | |
600 | continue; | |
601 | ||
602 | if (skb->dev == sdata->dev) | |
603 | return sdata; | |
604 | } | |
605 | ||
606 | return NULL; | |
607 | } | |
608 | ||
609 | return rcu_dereference(local->p2p_sdata); | |
610 | } | |
611 | ||
612 | static void ieee80211_report_ack_skb(struct ieee80211_local *local, | |
613 | struct ieee80211_tx_info *info, | |
614 | bool acked, bool dropped) | |
615 | { | |
616 | struct sk_buff *skb; | |
617 | unsigned long flags; | |
618 | ||
619 | spin_lock_irqsave(&local->ack_status_lock, flags); | |
d3e709e6 | 620 | skb = idr_remove(&local->ack_status_frames, info->ack_frame_id); |
b2eb0ee6 JB |
621 | spin_unlock_irqrestore(&local->ack_status_lock, flags); |
622 | ||
623 | if (!skb) | |
624 | return; | |
625 | ||
b2eb0ee6 | 626 | if (info->flags & IEEE80211_TX_INTFL_NL80211_FRAME_TX) { |
3b79af97 | 627 | u64 cookie = IEEE80211_SKB_CB(skb)->ack.cookie; |
b2eb0ee6 | 628 | struct ieee80211_sub_if_data *sdata; |
3b79af97 | 629 | struct ieee80211_hdr *hdr = (void *)skb->data; |
86a1b9d7 MT |
630 | __be16 ethertype = 0; |
631 | ||
632 | if (skb->len >= ETH_HLEN && skb->protocol == cpu_to_be16(ETH_P_802_3)) | |
633 | skb_copy_bits(skb, 2 * ETH_ALEN, ðertype, ETH_TLEN); | |
b2eb0ee6 JB |
634 | |
635 | rcu_read_lock(); | |
636 | sdata = ieee80211_sdata_from_skb(local, skb); | |
3b79af97 | 637 | if (sdata) { |
86a1b9d7 MT |
638 | if (ethertype == sdata->control_port_protocol || |
639 | ethertype == cpu_to_be16(ETH_P_PREAUTH)) | |
640 | cfg80211_control_port_tx_status(&sdata->wdev, | |
641 | cookie, | |
642 | skb->data, | |
643 | skb->len, | |
644 | acked, | |
645 | GFP_ATOMIC); | |
646 | else if (ieee80211_is_any_nullfunc(hdr->frame_control)) | |
3b79af97 | 647 | cfg80211_probe_status(sdata->dev, hdr->addr1, |
a78b26ff VN |
648 | cookie, acked, |
649 | info->status.ack_signal, | |
650 | info->status.is_valid_ack_signal, | |
3b79af97 | 651 | GFP_ATOMIC); |
a7528198 | 652 | else if (ieee80211_is_mgmt(hdr->frame_control)) |
3b79af97 JB |
653 | cfg80211_mgmt_tx_status(&sdata->wdev, cookie, |
654 | skb->data, skb->len, | |
655 | acked, GFP_ATOMIC); | |
a7528198 | 656 | else |
86a1b9d7 MT |
657 | pr_warn("Unknown status report in ack skb\n"); |
658 | ||
3b79af97 | 659 | } |
b2eb0ee6 JB |
660 | rcu_read_unlock(); |
661 | ||
8682250b AO |
662 | dev_kfree_skb_any(skb); |
663 | } else if (dropped) { | |
b2eb0ee6 JB |
664 | dev_kfree_skb_any(skb); |
665 | } else { | |
666 | /* consumes skb */ | |
667 | skb_complete_wifi_ack(skb, acked); | |
668 | } | |
669 | } | |
670 | ||
8a2fbedc JB |
671 | static void ieee80211_report_used_skb(struct ieee80211_local *local, |
672 | struct sk_buff *skb, bool dropped) | |
673 | { | |
674 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
7a89233a | 675 | u16 tx_time_est = ieee80211_info_get_tx_time_est(info); |
8a2fbedc JB |
676 | struct ieee80211_hdr *hdr = (void *)skb->data; |
677 | bool acked = info->flags & IEEE80211_TX_STAT_ACK; | |
678 | ||
679 | if (dropped) | |
680 | acked = false; | |
681 | ||
7a89233a THJ |
682 | if (tx_time_est) { |
683 | struct sta_info *sta; | |
684 | ||
685 | rcu_read_lock(); | |
686 | ||
687 | sta = sta_info_get_by_addrs(local, hdr->addr1, hdr->addr2); | |
688 | ieee80211_sta_update_pending_airtime(local, sta, | |
689 | skb_get_queue_mapping(skb), | |
690 | tx_time_est, | |
691 | true); | |
692 | rcu_read_unlock(); | |
693 | } | |
694 | ||
3b79af97 | 695 | if (info->flags & IEEE80211_TX_INTFL_MLME_CONN_TX) { |
b2eb0ee6 | 696 | struct ieee80211_sub_if_data *sdata; |
8a2fbedc JB |
697 | |
698 | rcu_read_lock(); | |
699 | ||
b2eb0ee6 | 700 | sdata = ieee80211_sdata_from_skb(local, skb); |
8a2fbedc | 701 | |
1672c0e3 | 702 | if (!sdata) { |
8a2fbedc | 703 | skb->dev = NULL; |
75dbf00b | 704 | } else { |
1277b4a9 LK |
705 | unsigned int hdr_size = |
706 | ieee80211_hdrlen(hdr->frame_control); | |
707 | ||
708 | /* Check to see if packet is a TDLS teardown packet */ | |
709 | if (ieee80211_is_data(hdr->frame_control) && | |
710 | (ieee80211_get_tdls_action(skb, hdr_size) == | |
711 | WLAN_TDLS_TEARDOWN)) | |
712 | ieee80211_tdls_td_tx_handle(local, sdata, skb, | |
713 | info->flags); | |
714 | else | |
715 | ieee80211_mgd_conn_tx_status(sdata, | |
716 | hdr->frame_control, | |
717 | acked); | |
8a2fbedc JB |
718 | } |
719 | ||
720 | rcu_read_unlock(); | |
b2eb0ee6 JB |
721 | } else if (info->ack_frame_id) { |
722 | ieee80211_report_ack_skb(local, info, acked, dropped); | |
8a2fbedc | 723 | } |
2cc6f5a7 JB |
724 | |
725 | if (!dropped && skb->destructor) { | |
726 | skb->wifi_acked_valid = 1; | |
727 | skb->wifi_acked = acked; | |
728 | } | |
5d473fed BA |
729 | |
730 | ieee80211_led_tx(local); | |
34b1e0e9 SS |
731 | |
732 | if (skb_has_frag_list(skb)) { | |
733 | kfree_skb_list(skb_shinfo(skb)->frag_list); | |
734 | skb_shinfo(skb)->frag_list = NULL; | |
735 | } | |
8a2fbedc JB |
736 | } |
737 | ||
99ba2a14 JB |
738 | /* |
739 | * Use a static threshold for now, best value to be determined | |
740 | * by testing ... | |
741 | * Should it depend on: | |
742 | * - on # of retransmissions | |
743 | * - current throughput (higher value for higher tpt)? | |
744 | */ | |
745 | #define STA_LOST_PKT_THRESHOLD 50 | |
47df8e05 | 746 | #define STA_LOST_PKT_TIME HZ /* 1 sec since last ACK */ |
9d58f25b LK |
747 | #define STA_LOST_TDLS_PKT_THRESHOLD 10 |
748 | #define STA_LOST_TDLS_PKT_TIME (10*HZ) /* 10secs since last ACK */ | |
99ba2a14 | 749 | |
ad9dda63 FF |
750 | static void ieee80211_lost_packet(struct sta_info *sta, |
751 | struct ieee80211_tx_info *info) | |
abd43a6a | 752 | { |
47df8e05 FF |
753 | unsigned long pkt_time = STA_LOST_PKT_TIME; |
754 | unsigned int pkt_thr = STA_LOST_PKT_THRESHOLD; | |
755 | ||
e8a24cd4 RM |
756 | /* If driver relies on its own algorithm for station kickout, skip |
757 | * mac80211 packet loss mechanism. | |
758 | */ | |
759 | if (ieee80211_hw_check(&sta->local->hw, REPORTS_LOW_ACK)) | |
760 | return; | |
761 | ||
abd43a6a FF |
762 | /* This packet was aggregated but doesn't carry status info */ |
763 | if ((info->flags & IEEE80211_TX_CTL_AMPDU) && | |
764 | !(info->flags & IEEE80211_TX_STAT_AMPDU)) | |
765 | return; | |
766 | ||
e5a9f8d0 | 767 | sta->status_stats.lost_packets++; |
47df8e05 FF |
768 | if (sta->sta.tdls) { |
769 | pkt_time = STA_LOST_TDLS_PKT_TIME; | |
770 | pkt_thr = STA_LOST_PKT_THRESHOLD; | |
771 | } | |
9d58f25b LK |
772 | |
773 | /* | |
774 | * If we're in TDLS mode, make sure that all STA_LOST_TDLS_PKT_THRESHOLD | |
775 | * of the last packets were lost, and that no ACK was received in the | |
776 | * last STA_LOST_TDLS_PKT_TIME ms, before triggering the CQM packet-loss | |
777 | * mechanism. | |
47df8e05 | 778 | * For non-TDLS, use STA_LOST_PKT_THRESHOLD and STA_LOST_PKT_TIME |
9d58f25b | 779 | */ |
47df8e05 FF |
780 | if (sta->status_stats.lost_packets < pkt_thr || |
781 | !time_after(jiffies, sta->status_stats.last_pkt_time + pkt_time)) | |
abd43a6a FF |
782 | return; |
783 | ||
784 | cfg80211_cqm_pktloss_notify(sta->sdata->dev, sta->sta.addr, | |
e5a9f8d0 JB |
785 | sta->status_stats.lost_packets, GFP_ATOMIC); |
786 | sta->status_stats.lost_packets = 0; | |
abd43a6a FF |
787 | } |
788 | ||
7e1cdcbb FF |
789 | static int ieee80211_tx_get_rates(struct ieee80211_hw *hw, |
790 | struct ieee80211_tx_info *info, | |
791 | int *retry_count) | |
fe7a5d5c | 792 | { |
7e1cdcbb FF |
793 | int count = -1; |
794 | int i; | |
fe7a5d5c JB |
795 | |
796 | for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { | |
d01b3160 LB |
797 | if ((info->flags & IEEE80211_TX_CTL_AMPDU) && |
798 | !(info->flags & IEEE80211_TX_STAT_AMPDU)) { | |
799 | /* just the first aggr frame carry status info */ | |
800 | info->status.rates[i].idx = -1; | |
801 | info->status.rates[i].count = 0; | |
802 | break; | |
803 | } else if (info->status.rates[i].idx < 0) { | |
be7974aa HS |
804 | break; |
805 | } else if (i >= hw->max_report_rates) { | |
806 | /* the HW cannot have attempted that rate */ | |
fe7a5d5c JB |
807 | info->status.rates[i].idx = -1; |
808 | info->status.rates[i].count = 0; | |
be7974aa | 809 | break; |
fe7a5d5c JB |
810 | } |
811 | ||
7e1cdcbb | 812 | count += info->status.rates[i].count; |
fe7a5d5c | 813 | } |
be7974aa | 814 | |
7e1cdcbb FF |
815 | if (count < 0) |
816 | count = 0; | |
817 | ||
818 | *retry_count = count; | |
f2a0c187 | 819 | return i - 1; |
7e1cdcbb FF |
820 | } |
821 | ||
4dc792b8 HS |
822 | void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, |
823 | struct ieee80211_supported_band *sband, | |
b7b2e8ca JC |
824 | int retry_count, int shift, bool send_to_cooked, |
825 | struct ieee80211_tx_status *status) | |
7e1cdcbb FF |
826 | { |
827 | struct sk_buff *skb2; | |
4dc792b8 HS |
828 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
829 | struct ieee80211_sub_if_data *sdata; | |
830 | struct net_device *prev_dev = NULL; | |
831 | int rtap_len; | |
832 | ||
833 | /* send frame to monitor interfaces now */ | |
3d07ffca | 834 | rtap_len = ieee80211_tx_radiotap_len(info, status); |
4dc792b8 HS |
835 | if (WARN_ON_ONCE(skb_headroom(skb) < rtap_len)) { |
836 | pr_err("ieee80211_tx_status: headroom too small\n"); | |
837 | dev_kfree_skb(skb); | |
838 | return; | |
839 | } | |
840 | ieee80211_add_tx_radiotap_header(local, sband, skb, retry_count, | |
3d07ffca | 841 | rtap_len, shift, status); |
4dc792b8 HS |
842 | |
843 | /* XXX: is this sufficient for BPF? */ | |
d57a544d | 844 | skb_reset_mac_header(skb); |
4dc792b8 HS |
845 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
846 | skb->pkt_type = PACKET_OTHERHOST; | |
847 | skb->protocol = htons(ETH_P_802_2); | |
848 | memset(skb->cb, 0, sizeof(skb->cb)); | |
849 | ||
850 | rcu_read_lock(); | |
851 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
852 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { | |
853 | if (!ieee80211_sdata_running(sdata)) | |
854 | continue; | |
855 | ||
d8212184 | 856 | if ((sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) && |
4dc792b8 HS |
857 | !send_to_cooked) |
858 | continue; | |
859 | ||
860 | if (prev_dev) { | |
861 | skb2 = skb_clone(skb, GFP_ATOMIC); | |
862 | if (skb2) { | |
863 | skb2->dev = prev_dev; | |
864 | netif_rx(skb2); | |
865 | } | |
866 | } | |
867 | ||
868 | prev_dev = sdata->dev; | |
869 | } | |
870 | } | |
871 | if (prev_dev) { | |
872 | skb->dev = prev_dev; | |
873 | netif_rx(skb); | |
874 | skb = NULL; | |
875 | } | |
876 | rcu_read_unlock(); | |
877 | dev_kfree_skb(skb); | |
878 | } | |
879 | ||
5fe49a9d | 880 | static void __ieee80211_tx_status(struct ieee80211_hw *hw, |
3318111c FF |
881 | struct ieee80211_tx_status *status, |
882 | int rates_idx, int retry_count) | |
4dc792b8 | 883 | { |
5fe49a9d | 884 | struct sk_buff *skb = status->skb; |
7e1cdcbb FF |
885 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
886 | struct ieee80211_local *local = hw_to_local(hw); | |
5fe49a9d FF |
887 | struct ieee80211_tx_info *info = status->info; |
888 | struct sta_info *sta; | |
7e1cdcbb FF |
889 | __le16 fc; |
890 | struct ieee80211_supported_band *sband; | |
7e1cdcbb FF |
891 | bool send_to_cooked; |
892 | bool acked; | |
5972fa15 | 893 | bool noack_success; |
7e1cdcbb | 894 | struct ieee80211_bar *bar; |
7e1cdcbb | 895 | int shift = 0; |
5e06a9e8 | 896 | int tid = IEEE80211_NUM_TIDS; |
7e1cdcbb | 897 | |
fe7a5d5c | 898 | sband = local->hw.wiphy->bands[info->band]; |
375177bf | 899 | fc = hdr->frame_control; |
fe7a5d5c | 900 | |
5fe49a9d FF |
901 | if (status->sta) { |
902 | sta = container_of(status->sta, struct sta_info, sta); | |
2103dec1 SW |
903 | shift = ieee80211_vif_get_shift(&sta->sdata->vif); |
904 | ||
47086fc5 | 905 | if (info->flags & IEEE80211_TX_STATUS_EOSP) |
c2c98fde | 906 | clear_sta_flag(sta, WLAN_STA_SP); |
47086fc5 | 907 | |
04ac3c0e | 908 | acked = !!(info->flags & IEEE80211_TX_STAT_ACK); |
5972fa15 MT |
909 | noack_success = !!(info->flags & |
910 | IEEE80211_TX_STAT_NOACK_TRANSMITTED); | |
71f2c347 MH |
911 | |
912 | /* mesh Peer Service Period support */ | |
913 | if (ieee80211_vif_is_mesh(&sta->sdata->vif) && | |
914 | ieee80211_is_data_qos(fc)) | |
915 | ieee80211_mpsp_trigger_process( | |
916 | ieee80211_get_qos_ctl(hdr), sta, true, acked); | |
917 | ||
c2c98fde | 918 | if (!acked && test_sta_flag(sta, WLAN_STA_PS_STA)) { |
fe7a5d5c JB |
919 | /* |
920 | * The STA is in power save mode, so assume | |
921 | * that this TX packet failed because of that. | |
922 | */ | |
923 | ieee80211_handle_filtered_frame(local, sta, skb); | |
fe7a5d5c JB |
924 | return; |
925 | } | |
926 | ||
30686bf7 | 927 | if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL) && |
00a9a6d1 | 928 | (ieee80211_is_data(hdr->frame_control)) && |
0c869808 | 929 | (rates_idx != -1)) |
e5a9f8d0 JB |
930 | sta->tx_stats.last_rate = |
931 | info->status.rates[rates_idx]; | |
0c869808 | 932 | |
fe7a5d5c JB |
933 | if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) && |
934 | (ieee80211_is_data_qos(fc))) { | |
79c892b8 | 935 | u16 ssn; |
fe7a5d5c JB |
936 | u8 *qc; |
937 | ||
938 | qc = ieee80211_get_qos_ctl(hdr); | |
939 | tid = qc[0] & 0xf; | |
940 | ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10) | |
941 | & IEEE80211_SCTL_SEQ); | |
8c771244 | 942 | ieee80211_send_bar(&sta->sdata->vif, hdr->addr1, |
fe7a5d5c | 943 | tid, ssn); |
79c892b8 JB |
944 | } else if (ieee80211_is_data_qos(fc)) { |
945 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
946 | ||
947 | tid = qc[0] & 0xf; | |
fe7a5d5c JB |
948 | } |
949 | ||
e69deded | 950 | if (!acked && ieee80211_is_back_req(fc)) { |
79c892b8 | 951 | u16 control; |
7107676a | 952 | |
e69deded | 953 | /* |
7107676a FF |
954 | * BAR failed, store the last SSN and retry sending |
955 | * the BAR when the next unicast transmission on the | |
956 | * same TID succeeds. | |
e69deded HS |
957 | */ |
958 | bar = (struct ieee80211_bar *) skb->data; | |
7107676a FF |
959 | control = le16_to_cpu(bar->control); |
960 | if (!(control & IEEE80211_BAR_CTRL_MULTI_TID)) { | |
f0425bed FF |
961 | u16 ssn = le16_to_cpu(bar->start_seq_num); |
962 | ||
7107676a | 963 | tid = (control & |
e69deded HS |
964 | IEEE80211_BAR_CTRL_TID_INFO_MASK) >> |
965 | IEEE80211_BAR_CTRL_TID_INFO_SHIFT; | |
f0425bed | 966 | |
8df6b7b1 | 967 | ieee80211_set_bar_pending(sta, tid, ssn); |
e69deded HS |
968 | } |
969 | } | |
970 | ||
fe7a5d5c JB |
971 | if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) { |
972 | ieee80211_handle_filtered_frame(local, sta, skb); | |
fe7a5d5c | 973 | return; |
3318111c | 974 | } else if (ieee80211_is_data_present(fc)) { |
5972fa15 | 975 | if (!acked && !noack_success) |
3318111c | 976 | sta->status_stats.msdu_failed[tid]++; |
e5a9f8d0 | 977 | |
3318111c FF |
978 | sta->status_stats.msdu_retries[tid] += |
979 | retry_count; | |
fe7a5d5c JB |
980 | } |
981 | ||
04ac3c0e | 982 | if (!(info->flags & IEEE80211_TX_CTL_INJECTED) && acked) |
0f78231b | 983 | ieee80211_frame_acked(sta, skb); |
99ba2a14 | 984 | |
fe7a5d5c JB |
985 | } |
986 | ||
fe7a5d5c JB |
987 | /* SNMP counters |
988 | * Fragments are passed to low-level drivers as separate skbs, so these | |
989 | * are actually fragments, not frames. Update frame counters only for | |
990 | * the first fragment of the frame. */ | |
5cf16616 SM |
991 | if ((info->flags & IEEE80211_TX_STAT_ACK) || |
992 | (info->flags & IEEE80211_TX_STAT_NOACK_TRANSMITTED)) { | |
adf5ace5 | 993 | if (ieee80211_is_first_frag(hdr->seq_ctrl)) { |
c206ca67 | 994 | I802_DEBUG_INC(local->dot11TransmittedFrameCount); |
85b89af0 | 995 | if (is_multicast_ether_addr(ieee80211_get_DA(hdr))) |
c206ca67 | 996 | I802_DEBUG_INC(local->dot11MulticastTransmittedFrameCount); |
fe7a5d5c | 997 | if (retry_count > 0) |
c206ca67 | 998 | I802_DEBUG_INC(local->dot11RetryCount); |
fe7a5d5c | 999 | if (retry_count > 1) |
c206ca67 | 1000 | I802_DEBUG_INC(local->dot11MultipleRetryCount); |
fe7a5d5c JB |
1001 | } |
1002 | ||
1003 | /* This counter shall be incremented for an acknowledged MPDU | |
1004 | * with an individual address in the address 1 field or an MPDU | |
1005 | * with a multicast address in the address 1 field of type Data | |
1006 | * or Management. */ | |
1007 | if (!is_multicast_ether_addr(hdr->addr1) || | |
adf5ace5 HS |
1008 | ieee80211_is_data(fc) || |
1009 | ieee80211_is_mgmt(fc)) | |
c206ca67 | 1010 | I802_DEBUG_INC(local->dot11TransmittedFragmentCount); |
fe7a5d5c | 1011 | } else { |
adf5ace5 | 1012 | if (ieee80211_is_first_frag(hdr->seq_ctrl)) |
c206ca67 | 1013 | I802_DEBUG_INC(local->dot11FailedCount); |
fe7a5d5c JB |
1014 | } |
1015 | ||
30b2f0be | 1016 | if (ieee80211_is_any_nullfunc(fc) && |
08a5bdde | 1017 | ieee80211_has_pm(fc) && |
30686bf7 | 1018 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) && |
375177bf VN |
1019 | !(info->flags & IEEE80211_TX_CTL_INJECTED) && |
1020 | local->ps_sdata && !(local->scanning)) { | |
1021 | if (info->flags & IEEE80211_TX_STAT_ACK) { | |
1022 | local->ps_sdata->u.mgd.flags |= | |
1023 | IEEE80211_STA_NULLFUNC_ACKED; | |
375177bf VN |
1024 | } else |
1025 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
1026 | msecs_to_jiffies(10)); | |
1027 | } | |
1028 | ||
8a2fbedc | 1029 | ieee80211_report_used_skb(local, skb, false); |
a729cff8 | 1030 | |
fe7a5d5c JB |
1031 | /* this was a transmitted frame, but now we want to reuse it */ |
1032 | skb_orphan(skb); | |
1033 | ||
eaf55530 FF |
1034 | /* Need to make a copy before skb->cb gets cleared */ |
1035 | send_to_cooked = !!(info->flags & IEEE80211_TX_CTL_INJECTED) || | |
adf5ace5 | 1036 | !(ieee80211_is_data(fc)); |
eaf55530 | 1037 | |
fe7a5d5c JB |
1038 | /* |
1039 | * This is a bit racy but we can avoid a lot of work | |
1040 | * with this test... | |
1041 | */ | |
eaf55530 | 1042 | if (!local->monitors && (!send_to_cooked || !local->cooked_mntrs)) { |
f02dff93 FF |
1043 | if (status->free_list) |
1044 | list_add_tail(&skb->list, status->free_list); | |
1045 | else | |
1046 | dev_kfree_skb(skb); | |
fe7a5d5c JB |
1047 | return; |
1048 | } | |
1049 | ||
4dc792b8 | 1050 | /* send to monitor interfaces */ |
b7b2e8ca JC |
1051 | ieee80211_tx_monitor(local, skb, sband, retry_count, shift, |
1052 | send_to_cooked, status); | |
fe7a5d5c | 1053 | } |
5fe49a9d FF |
1054 | |
1055 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) | |
1056 | { | |
1057 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
1058 | struct ieee80211_local *local = hw_to_local(hw); | |
1059 | struct ieee80211_tx_status status = { | |
1060 | .skb = skb, | |
1061 | .info = IEEE80211_SKB_CB(skb), | |
1062 | }; | |
5fe49a9d FF |
1063 | struct sta_info *sta; |
1064 | ||
1065 | rcu_read_lock(); | |
1066 | ||
5072f73c THJ |
1067 | sta = sta_info_get_by_addrs(local, hdr->addr1, hdr->addr2); |
1068 | if (sta) | |
5fe49a9d | 1069 | status.sta = &sta->sta; |
5fe49a9d | 1070 | |
3318111c | 1071 | ieee80211_tx_status_ext(hw, &status); |
5fe49a9d FF |
1072 | rcu_read_unlock(); |
1073 | } | |
fe7a5d5c | 1074 | EXPORT_SYMBOL(ieee80211_tx_status); |
8178d38b | 1075 | |
5fe49a9d FF |
1076 | void ieee80211_tx_status_ext(struct ieee80211_hw *hw, |
1077 | struct ieee80211_tx_status *status) | |
eefebd31 FF |
1078 | { |
1079 | struct ieee80211_local *local = hw_to_local(hw); | |
5fe49a9d FF |
1080 | struct ieee80211_tx_info *info = status->info; |
1081 | struct ieee80211_sta *pubsta = status->sta; | |
a260e495 | 1082 | struct sk_buff *skb = status->skb; |
eefebd31 | 1083 | struct ieee80211_supported_band *sband; |
a260e495 | 1084 | struct sta_info *sta = NULL; |
3318111c | 1085 | int rates_idx, retry_count; |
eefebd31 | 1086 | bool acked, noack_success; |
a260e495 | 1087 | u16 tx_time_est; |
eefebd31 | 1088 | |
8ed37e79 FF |
1089 | if (pubsta) { |
1090 | sta = container_of(pubsta, struct sta_info, sta); | |
1091 | ||
1092 | if (status->rate) | |
1093 | sta->tx_stats.last_rate_info = *status->rate; | |
1094 | } | |
1095 | ||
23e9f1ef FF |
1096 | if (skb && (tx_time_est = |
1097 | ieee80211_info_get_tx_time_est(IEEE80211_SKB_CB(skb))) > 0) { | |
1098 | /* Do this here to avoid the expensive lookup of the sta | |
1099 | * in ieee80211_report_used_skb(). | |
1100 | */ | |
1101 | ieee80211_sta_update_pending_airtime(local, sta, | |
1102 | skb_get_queue_mapping(skb), | |
1103 | tx_time_est, | |
1104 | true); | |
1105 | ieee80211_info_set_tx_time_est(IEEE80211_SKB_CB(skb), 0); | |
1106 | } | |
1107 | ||
1108 | if (!status->info) | |
1109 | goto free; | |
1110 | ||
3318111c | 1111 | rates_idx = ieee80211_tx_get_rates(hw, info, &retry_count); |
eefebd31 FF |
1112 | |
1113 | sband = hw->wiphy->bands[info->band]; | |
1114 | ||
1115 | acked = !!(info->flags & IEEE80211_TX_STAT_ACK); | |
1116 | noack_success = !!(info->flags & IEEE80211_TX_STAT_NOACK_TRANSMITTED); | |
1117 | ||
1118 | if (pubsta) { | |
e3f25908 FF |
1119 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
1120 | ||
5972fa15 | 1121 | if (!acked && !noack_success) |
eefebd31 FF |
1122 | sta->status_stats.retry_failed++; |
1123 | sta->status_stats.retry_count += retry_count; | |
1124 | ||
3318111c | 1125 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { |
e3f25908 FF |
1126 | if (sdata->vif.type == NL80211_IFTYPE_STATION && |
1127 | skb && !(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP)) | |
1128 | ieee80211_sta_tx_notify(sdata, (void *) skb->data, | |
1129 | acked, info->status.tx_time); | |
1130 | ||
3318111c FF |
1131 | if (acked) { |
1132 | sta->status_stats.last_ack = jiffies; | |
eefebd31 | 1133 | |
3318111c FF |
1134 | if (sta->status_stats.lost_packets) |
1135 | sta->status_stats.lost_packets = 0; | |
eefebd31 | 1136 | |
3318111c FF |
1137 | /* Track when last packet was ACKed */ |
1138 | sta->status_stats.last_pkt_time = jiffies; | |
1139 | ||
e3f25908 FF |
1140 | /* Reset connection monitor */ |
1141 | if (sdata->vif.type == NL80211_IFTYPE_STATION && | |
1142 | unlikely(sdata->u.mgd.probe_send_count > 0)) | |
1143 | sdata->u.mgd.probe_send_count = 0; | |
1144 | ||
3318111c FF |
1145 | if (info->status.is_valid_ack_signal) { |
1146 | sta->status_stats.last_ack_signal = | |
1147 | (s8)info->status.ack_signal; | |
1148 | sta->status_stats.ack_signal_filled = true; | |
1149 | ewma_avg_signal_add(&sta->status_stats.avg_ack_signal, | |
1150 | -info->status.ack_signal); | |
1151 | } | |
1152 | } else if (test_sta_flag(sta, WLAN_STA_PS_STA)) { | |
1153 | return; | |
1154 | } else if (noack_success) { | |
1155 | /* nothing to do here, do not account as lost */ | |
1156 | } else { | |
1157 | ieee80211_lost_packet(sta, info); | |
1158 | } | |
eefebd31 FF |
1159 | } |
1160 | ||
5fe49a9d | 1161 | rate_control_tx_status(local, sband, status); |
c4205510 YCP |
1162 | if (ieee80211_vif_is_mesh(&sta->sdata->vif)) |
1163 | ieee80211s_update_metric(local, sta, status); | |
eefebd31 FF |
1164 | } |
1165 | ||
a260e495 | 1166 | if (skb && !(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP)) |
3318111c FF |
1167 | return __ieee80211_tx_status(hw, status, rates_idx, |
1168 | retry_count); | |
1169 | ||
eefebd31 FF |
1170 | if (acked || noack_success) { |
1171 | I802_DEBUG_INC(local->dot11TransmittedFrameCount); | |
1172 | if (!pubsta) | |
1173 | I802_DEBUG_INC(local->dot11MulticastTransmittedFrameCount); | |
1174 | if (retry_count > 0) | |
1175 | I802_DEBUG_INC(local->dot11RetryCount); | |
1176 | if (retry_count > 1) | |
1177 | I802_DEBUG_INC(local->dot11MultipleRetryCount); | |
1178 | } else { | |
1179 | I802_DEBUG_INC(local->dot11FailedCount); | |
1180 | } | |
a260e495 | 1181 | |
23e9f1ef | 1182 | free: |
a260e495 FF |
1183 | if (!skb) |
1184 | return; | |
1185 | ||
1186 | ieee80211_report_used_skb(local, skb, false); | |
f02dff93 FF |
1187 | if (status->free_list) |
1188 | list_add_tail(&skb->list, status->free_list); | |
1189 | else | |
1190 | dev_kfree_skb(skb); | |
eefebd31 | 1191 | } |
5fe49a9d | 1192 | EXPORT_SYMBOL(ieee80211_tx_status_ext); |
eefebd31 | 1193 | |
f8252e7b AK |
1194 | void ieee80211_tx_rate_update(struct ieee80211_hw *hw, |
1195 | struct ieee80211_sta *pubsta, | |
1196 | struct ieee80211_tx_info *info) | |
1197 | { | |
1198 | struct ieee80211_local *local = hw_to_local(hw); | |
1199 | struct ieee80211_supported_band *sband = hw->wiphy->bands[info->band]; | |
1200 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1201 | struct ieee80211_tx_status status = { | |
1202 | .info = info, | |
1203 | .sta = pubsta, | |
1204 | }; | |
1205 | ||
1206 | rate_control_tx_status(local, sband, &status); | |
1207 | ||
1208 | if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) | |
1209 | sta->tx_stats.last_rate = info->status.rates[0]; | |
1210 | } | |
1211 | EXPORT_SYMBOL(ieee80211_tx_rate_update); | |
1212 | ||
50ff477a JC |
1213 | void ieee80211_tx_status_8023(struct ieee80211_hw *hw, |
1214 | struct ieee80211_vif *vif, | |
1215 | struct sk_buff *skb) | |
1216 | { | |
50ff477a | 1217 | struct ieee80211_sub_if_data *sdata; |
a260e495 FF |
1218 | struct ieee80211_tx_status status = { |
1219 | .skb = skb, | |
1220 | .info = IEEE80211_SKB_CB(skb), | |
1221 | }; | |
50ff477a | 1222 | struct sta_info *sta; |
50ff477a JC |
1223 | |
1224 | sdata = vif_to_sdata(vif); | |
1225 | ||
50ff477a JC |
1226 | rcu_read_lock(); |
1227 | ||
a260e495 FF |
1228 | if (!ieee80211_lookup_ra_sta(sdata, skb, &sta) && !IS_ERR(sta)) |
1229 | status.sta = &sta->sta; | |
50ff477a | 1230 | |
a260e495 | 1231 | ieee80211_tx_status_ext(hw, &status); |
50ff477a | 1232 | |
50ff477a | 1233 | rcu_read_unlock(); |
50ff477a JC |
1234 | } |
1235 | EXPORT_SYMBOL(ieee80211_tx_status_8023); | |
1236 | ||
8178d38b AN |
1237 | void ieee80211_report_low_ack(struct ieee80211_sta *pubsta, u32 num_packets) |
1238 | { | |
1239 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1240 | cfg80211_cqm_pktloss_notify(sta->sdata->dev, sta->sta.addr, | |
1241 | num_packets, GFP_ATOMIC); | |
1242 | } | |
1243 | EXPORT_SYMBOL(ieee80211_report_low_ack); | |
6096de7f JB |
1244 | |
1245 | void ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb) | |
1246 | { | |
a729cff8 | 1247 | struct ieee80211_local *local = hw_to_local(hw); |
a729cff8 | 1248 | |
8a2fbedc | 1249 | ieee80211_report_used_skb(local, skb, true); |
6096de7f JB |
1250 | dev_kfree_skb_any(skb); |
1251 | } | |
1252 | EXPORT_SYMBOL(ieee80211_free_txskb); | |
1f98ab7f FF |
1253 | |
1254 | void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, | |
1255 | struct sk_buff_head *skbs) | |
1256 | { | |
1257 | struct sk_buff *skb; | |
1258 | ||
1259 | while ((skb = __skb_dequeue(skbs))) | |
1260 | ieee80211_free_txskb(hw, skb); | |
1261 | } |