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 |
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 | 51 | if (info->flags & (IEEE80211_TX_CTL_NO_PS_BUFFER | |
1d182885 FF |
52 | IEEE80211_TX_CTL_AMPDU | |
53 | IEEE80211_TX_CTL_HW_80211_ENCAP)) { | |
da629cf1 HS |
54 | ieee80211_free_txskb(&local->hw, skb); |
55 | return; | |
56 | } | |
57 | ||
697e6a0f JB |
58 | /* |
59 | * This skb 'survived' a round-trip through the driver, and | |
60 | * hopefully the driver didn't mangle it too badly. However, | |
77c2061d | 61 | * we can definitely not rely on the control information |
c6fcf6bc JB |
62 | * being correct. Clear it so we don't get junk there, and |
63 | * indicate that it needs new processing, but must not be | |
64 | * modified/encrypted again. | |
697e6a0f JB |
65 | */ |
66 | memset(&info->control, 0, sizeof(info->control)); | |
18c94907 JB |
67 | |
68 | info->control.jiffies = jiffies; | |
69 | info->control.vif = &sta->sdata->vif; | |
cc20ff2c FF |
70 | info->control.flags |= IEEE80211_TX_INTCFL_NEED_TXPROCESSING; |
71 | info->flags |= IEEE80211_TX_INTFL_RETRANSMISSION; | |
eb7d3066 | 72 | info->flags &= ~IEEE80211_TX_TEMPORARY_FLAGS; |
697e6a0f | 73 | |
e5a9f8d0 | 74 | sta->status_stats.filtered++; |
fe7a5d5c | 75 | |
8a8656fa JB |
76 | /* |
77 | * Clear more-data bit on filtered frames, it might be set | |
78 | * but later frames might time out so it might have to be | |
79 | * clear again ... It's all rather unlikely (this frame | |
80 | * should time out first, right?) but let's not confuse | |
81 | * peers unnecessarily. | |
82 | */ | |
83 | if (hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) | |
84 | hdr->frame_control &= ~cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
85 | ||
948d887d | 86 | if (ieee80211_is_data_qos(hdr->frame_control)) { |
47086fc5 JB |
87 | u8 *p = ieee80211_get_qos_ctl(hdr); |
88 | int tid = *p & IEEE80211_QOS_CTL_TID_MASK; | |
89 | ||
90 | /* | |
91 | * Clear EOSP if set, this could happen e.g. | |
92 | * if an absence period (us being a P2P GO) | |
93 | * shortens the SP. | |
94 | */ | |
95 | if (*p & IEEE80211_QOS_CTL_EOSP) | |
96 | *p &= ~IEEE80211_QOS_CTL_EOSP; | |
731977e9 | 97 | ac = ieee80211_ac_from_tid(tid); |
948d887d JB |
98 | } else { |
99 | ac = IEEE80211_AC_BE; | |
100 | } | |
101 | ||
fe7a5d5c JB |
102 | /* |
103 | * Clear the TX filter mask for this STA when sending the next | |
104 | * packet. If the STA went to power save mode, this will happen | |
105 | * when it wakes up for the next time. | |
106 | */ | |
c2c98fde | 107 | set_sta_flag(sta, WLAN_STA_CLEAR_PS_FILT); |
f7418bc1 | 108 | ieee80211_clear_fast_xmit(sta); |
fe7a5d5c JB |
109 | |
110 | /* | |
111 | * This code races in the following way: | |
112 | * | |
113 | * (1) STA sends frame indicating it will go to sleep and does so | |
114 | * (2) hardware/firmware adds STA to filter list, passes frame up | |
115 | * (3) hardware/firmware processes TX fifo and suppresses a frame | |
116 | * (4) we get TX status before having processed the frame and | |
117 | * knowing that the STA has gone to sleep. | |
118 | * | |
119 | * This is actually quite unlikely even when both those events are | |
120 | * processed from interrupts coming in quickly after one another or | |
121 | * even at the same time because we queue both TX status events and | |
122 | * RX frames to be processed by a tasklet and process them in the | |
123 | * same order that they were received or TX status last. Hence, there | |
124 | * is no race as long as the frame RX is processed before the next TX | |
125 | * status, which drivers can ensure, see below. | |
126 | * | |
127 | * Note that this can only happen if the hardware or firmware can | |
128 | * actually add STAs to the filter list, if this is done by the | |
129 | * driver in response to set_tim() (which will only reduce the race | |
130 | * this whole filtering tries to solve, not completely solve it) | |
131 | * this situation cannot happen. | |
132 | * | |
133 | * To completely solve this race drivers need to make sure that they | |
134 | * (a) don't mix the irq-safe/not irq-safe TX status/RX processing | |
135 | * functions and | |
136 | * (b) always process RX events before TX status events if ordering | |
137 | * can be unknown, for example with different interrupt status | |
138 | * bits. | |
d057e5a3 AN |
139 | * (c) if PS mode transitions are manual (i.e. the flag |
140 | * %IEEE80211_HW_AP_LINK_PS is set), always process PS state | |
141 | * changes before calling TX status events if ordering can be | |
142 | * unknown. | |
fe7a5d5c | 143 | */ |
c2c98fde | 144 | if (test_sta_flag(sta, WLAN_STA_PS_STA) && |
948d887d JB |
145 | skb_queue_len(&sta->tx_filtered[ac]) < STA_MAX_TX_BUFFER) { |
146 | skb_queue_tail(&sta->tx_filtered[ac], skb); | |
c868cb35 | 147 | sta_info_recalc_tim(sta); |
60750397 JB |
148 | |
149 | if (!timer_pending(&local->sta_cleanup)) | |
150 | mod_timer(&local->sta_cleanup, | |
151 | round_jiffies(jiffies + | |
152 | STA_INFO_CLEANUP_INTERVAL)); | |
fe7a5d5c JB |
153 | return; |
154 | } | |
155 | ||
c2c98fde | 156 | if (!test_sta_flag(sta, WLAN_STA_PS_STA) && |
fe7a5d5c JB |
157 | !(info->flags & IEEE80211_TX_INTFL_RETRIED)) { |
158 | /* Software retry the packet once */ | |
159 | info->flags |= IEEE80211_TX_INTFL_RETRIED; | |
160 | ieee80211_add_pending_skb(local, skb); | |
161 | return; | |
162 | } | |
163 | ||
bdcbd8e0 JB |
164 | ps_dbg_ratelimited(sta->sdata, |
165 | "dropped TX filtered frame, queue_len=%d PS=%d @%lu\n", | |
166 | skb_queue_len(&sta->tx_filtered[ac]), | |
167 | !!test_sta_flag(sta, WLAN_STA_PS_STA), jiffies); | |
c3e7724b | 168 | ieee80211_free_txskb(&local->hw, skb); |
fe7a5d5c JB |
169 | } |
170 | ||
f0425bed FF |
171 | static void ieee80211_check_pending_bar(struct sta_info *sta, u8 *addr, u8 tid) |
172 | { | |
173 | struct tid_ampdu_tx *tid_tx; | |
174 | ||
175 | tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]); | |
176 | if (!tid_tx || !tid_tx->bar_pending) | |
177 | return; | |
178 | ||
179 | tid_tx->bar_pending = false; | |
8c771244 | 180 | ieee80211_send_bar(&sta->sdata->vif, addr, tid, tid_tx->failed_bar_ssn); |
f0425bed FF |
181 | } |
182 | ||
0f78231b JB |
183 | static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb) |
184 | { | |
185 | struct ieee80211_mgmt *mgmt = (void *) skb->data; | |
186 | struct ieee80211_local *local = sta->local; | |
187 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
0c5b9329 | 188 | |
f0425bed FF |
189 | if (ieee80211_is_data_qos(mgmt->frame_control)) { |
190 | struct ieee80211_hdr *hdr = (void *) skb->data; | |
191 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
192 | u16 tid = qc[0] & 0xf; | |
193 | ||
194 | ieee80211_check_pending_bar(sta, hdr->addr1, tid); | |
195 | } | |
196 | ||
0f78231b | 197 | if (ieee80211_is_action(mgmt->frame_control) && |
cf147085 | 198 | !ieee80211_has_protected(mgmt->frame_control) && |
0f78231b | 199 | mgmt->u.action.category == WLAN_CATEGORY_HT && |
04ecd257 | 200 | mgmt->u.action.u.ht_smps.action == WLAN_HT_ACTION_SMPS && |
04ecd257 | 201 | ieee80211_sdata_running(sdata)) { |
687da132 EG |
202 | enum ieee80211_smps_mode smps_mode; |
203 | ||
0f78231b JB |
204 | switch (mgmt->u.action.u.ht_smps.smps_control) { |
205 | case WLAN_HT_SMPS_CONTROL_DYNAMIC: | |
687da132 | 206 | smps_mode = IEEE80211_SMPS_DYNAMIC; |
0f78231b JB |
207 | break; |
208 | case WLAN_HT_SMPS_CONTROL_STATIC: | |
687da132 | 209 | smps_mode = IEEE80211_SMPS_STATIC; |
0f78231b JB |
210 | break; |
211 | case WLAN_HT_SMPS_CONTROL_DISABLED: | |
212 | default: /* shouldn't happen since we don't send that */ | |
687da132 | 213 | smps_mode = IEEE80211_SMPS_OFF; |
0f78231b JB |
214 | break; |
215 | } | |
216 | ||
687da132 EG |
217 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
218 | /* | |
219 | * This update looks racy, but isn't -- if we come | |
220 | * here we've definitely got a station that we're | |
221 | * talking to, and on a managed interface that can | |
222 | * only be the AP. And the only other place updating | |
223 | * this variable in managed mode is before association. | |
224 | */ | |
225 | sdata->smps_mode = smps_mode; | |
226 | ieee80211_queue_work(&local->hw, &sdata->recalc_smps); | |
227 | } else if (sdata->vif.type == NL80211_IFTYPE_AP || | |
228 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
229 | sta->known_smps_mode = smps_mode; | |
230 | } | |
0f78231b JB |
231 | } |
232 | } | |
233 | ||
f0425bed FF |
234 | static void ieee80211_set_bar_pending(struct sta_info *sta, u8 tid, u16 ssn) |
235 | { | |
236 | struct tid_ampdu_tx *tid_tx; | |
237 | ||
238 | tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]); | |
239 | if (!tid_tx) | |
240 | return; | |
241 | ||
242 | tid_tx->failed_bar_ssn = ssn; | |
243 | tid_tx->bar_pending = true; | |
244 | } | |
245 | ||
3d07ffca JC |
246 | static int ieee80211_tx_radiotap_len(struct ieee80211_tx_info *info, |
247 | struct ieee80211_tx_status *status) | |
a2fe8166 HS |
248 | { |
249 | int len = sizeof(struct ieee80211_radiotap_header); | |
250 | ||
251 | /* IEEE80211_RADIOTAP_RATE rate */ | |
dc649d64 JC |
252 | if (status && status->rate && !(status->rate->flags & |
253 | (RATE_INFO_FLAGS_MCS | | |
2a38075c AAL |
254 | RATE_INFO_FLAGS_DMG | |
255 | RATE_INFO_FLAGS_EDMG | | |
dc649d64 JC |
256 | RATE_INFO_FLAGS_VHT_MCS | |
257 | RATE_INFO_FLAGS_HE_MCS))) | |
258 | len += 2; | |
259 | else if (info->status.rates[0].idx >= 0 && | |
260 | !(info->status.rates[0].flags & | |
261 | (IEEE80211_TX_RC_MCS | IEEE80211_TX_RC_VHT_MCS))) | |
a2fe8166 HS |
262 | len += 2; |
263 | ||
264 | /* IEEE80211_RADIOTAP_TX_FLAGS */ | |
265 | len += 2; | |
266 | ||
267 | /* IEEE80211_RADIOTAP_DATA_RETRIES */ | |
268 | len += 1; | |
269 | ||
a8241310 KB |
270 | /* IEEE80211_RADIOTAP_MCS |
271 | * IEEE80211_RADIOTAP_VHT */ | |
3d07ffca JC |
272 | if (status && status->rate) { |
273 | if (status->rate->flags & RATE_INFO_FLAGS_MCS) | |
274 | len += 3; | |
275 | else if (status->rate->flags & RATE_INFO_FLAGS_VHT_MCS) | |
276 | len = ALIGN(len, 2) + 12; | |
277 | else if (status->rate->flags & RATE_INFO_FLAGS_HE_MCS) | |
278 | len = ALIGN(len, 2) + 12; | |
279 | } else if (info->status.rates[0].idx >= 0) { | |
a8241310 KB |
280 | if (info->status.rates[0].flags & IEEE80211_TX_RC_MCS) |
281 | len += 3; | |
282 | else if (info->status.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) | |
283 | len = ALIGN(len, 2) + 12; | |
284 | } | |
7f2a5e21 | 285 | |
a2fe8166 HS |
286 | return len; |
287 | } | |
288 | ||
2103dec1 | 289 | static void |
a8241310 KB |
290 | ieee80211_add_tx_radiotap_header(struct ieee80211_local *local, |
291 | struct ieee80211_supported_band *sband, | |
2103dec1 | 292 | struct sk_buff *skb, int retry_count, |
3d07ffca JC |
293 | int rtap_len, int shift, |
294 | struct ieee80211_tx_status *status) | |
a2fe8166 HS |
295 | { |
296 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
297 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
298 | struct ieee80211_radiotap_header *rthdr; | |
299 | unsigned char *pos; | |
3d07ffca | 300 | u16 legacy_rate = 0; |
9c8f2c42 | 301 | u16 txflags; |
a2fe8166 | 302 | |
d58ff351 | 303 | rthdr = skb_push(skb, rtap_len); |
a2fe8166 HS |
304 | |
305 | memset(rthdr, 0, rtap_len); | |
306 | rthdr->it_len = cpu_to_le16(rtap_len); | |
307 | rthdr->it_present = | |
308 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | | |
309 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES)); | |
310 | pos = (unsigned char *)(rthdr + 1); | |
311 | ||
312 | /* | |
313 | * XXX: Once radiotap gets the bitmap reset thing the vendor | |
314 | * extensions proposal contains, we can actually report | |
315 | * the whole set of tries we did. | |
316 | */ | |
317 | ||
318 | /* IEEE80211_RADIOTAP_RATE */ | |
2103dec1 | 319 | |
8db6e736 JC |
320 | if (status && status->rate) { |
321 | if (!(status->rate->flags & (RATE_INFO_FLAGS_MCS | | |
2a38075c AAL |
322 | RATE_INFO_FLAGS_DMG | |
323 | RATE_INFO_FLAGS_EDMG | | |
8db6e736 JC |
324 | RATE_INFO_FLAGS_VHT_MCS | |
325 | RATE_INFO_FLAGS_HE_MCS))) | |
326 | legacy_rate = status->rate->legacy; | |
327 | } else if (info->status.rates[0].idx >= 0 && | |
3d07ffca JC |
328 | !(info->status.rates[0].flags & (IEEE80211_TX_RC_MCS | |
329 | IEEE80211_TX_RC_VHT_MCS))) | |
330 | legacy_rate = | |
331 | sband->bitrates[info->status.rates[0].idx].bitrate; | |
332 | ||
333 | if (legacy_rate) { | |
a2fe8166 | 334 | rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_RATE); |
3d07ffca | 335 | *pos = DIV_ROUND_UP(legacy_rate, 5 * (1 << shift)); |
a2fe8166 HS |
336 | /* padding for tx flags */ |
337 | pos += 2; | |
338 | } | |
339 | ||
340 | /* IEEE80211_RADIOTAP_TX_FLAGS */ | |
341 | txflags = 0; | |
342 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && | |
343 | !is_multicast_ether_addr(hdr->addr1)) | |
9c8f2c42 | 344 | txflags |= IEEE80211_RADIOTAP_F_TX_FAIL; |
a2fe8166 | 345 | |
311ab8e1 | 346 | if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) |
9c8f2c42 | 347 | txflags |= IEEE80211_RADIOTAP_F_TX_CTS; |
311ab8e1 | 348 | if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) |
9c8f2c42 | 349 | txflags |= IEEE80211_RADIOTAP_F_TX_RTS; |
a2fe8166 HS |
350 | |
351 | put_unaligned_le16(txflags, pos); | |
352 | pos += 2; | |
353 | ||
354 | /* IEEE80211_RADIOTAP_DATA_RETRIES */ | |
355 | /* for now report the total retry_count */ | |
356 | *pos = retry_count; | |
357 | pos++; | |
7f2a5e21 | 358 | |
3d07ffca JC |
359 | if (status && status->rate && |
360 | (status->rate->flags & RATE_INFO_FLAGS_MCS)) { | |
361 | rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_MCS); | |
362 | pos[0] = IEEE80211_RADIOTAP_MCS_HAVE_MCS | | |
363 | IEEE80211_RADIOTAP_MCS_HAVE_GI | | |
364 | IEEE80211_RADIOTAP_MCS_HAVE_BW; | |
365 | if (status->rate->flags & RATE_INFO_FLAGS_SHORT_GI) | |
366 | pos[1] |= IEEE80211_RADIOTAP_MCS_SGI; | |
367 | if (status->rate->bw == RATE_INFO_BW_40) | |
368 | pos[1] |= IEEE80211_RADIOTAP_MCS_BW_40; | |
369 | pos[2] = status->rate->mcs; | |
370 | pos += 3; | |
371 | } else if (status && status->rate && | |
372 | (status->rate->flags & RATE_INFO_FLAGS_VHT_MCS)) { | |
373 | u16 known = local->hw.radiotap_vht_details & | |
374 | (IEEE80211_RADIOTAP_VHT_KNOWN_GI | | |
375 | IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH); | |
376 | ||
377 | rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_VHT); | |
378 | ||
379 | /* required alignment from rthdr */ | |
380 | pos = (u8 *)rthdr + ALIGN(pos - (u8 *)rthdr, 2); | |
381 | ||
382 | /* u16 known - IEEE80211_RADIOTAP_VHT_KNOWN_* */ | |
383 | put_unaligned_le16(known, pos); | |
384 | pos += 2; | |
385 | ||
386 | /* u8 flags - IEEE80211_RADIOTAP_VHT_FLAG_* */ | |
387 | if (status->rate->flags & RATE_INFO_FLAGS_SHORT_GI) | |
388 | *pos |= IEEE80211_RADIOTAP_VHT_FLAG_SGI; | |
389 | pos++; | |
390 | ||
391 | /* u8 bandwidth */ | |
392 | switch (status->rate->bw) { | |
393 | case RATE_INFO_BW_160: | |
394 | *pos = 11; | |
395 | break; | |
396 | case RATE_INFO_BW_80: | |
a027c304 | 397 | *pos = 4; |
3d07ffca JC |
398 | break; |
399 | case RATE_INFO_BW_40: | |
400 | *pos = 1; | |
401 | break; | |
402 | default: | |
403 | *pos = 0; | |
404 | break; | |
405 | } | |
3a00f081 | 406 | pos++; |
3d07ffca JC |
407 | |
408 | /* u8 mcs_nss[4] */ | |
409 | *pos = (status->rate->mcs << 4) | status->rate->nss; | |
410 | pos += 4; | |
411 | ||
412 | /* u8 coding */ | |
413 | pos++; | |
414 | /* u8 group_id */ | |
415 | pos++; | |
416 | /* u16 partial_aid */ | |
417 | pos += 2; | |
418 | } else if (status && status->rate && | |
419 | (status->rate->flags & RATE_INFO_FLAGS_HE_MCS)) { | |
420 | struct ieee80211_radiotap_he *he; | |
421 | ||
422 | rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_HE); | |
423 | ||
424 | /* required alignment from rthdr */ | |
425 | pos = (u8 *)rthdr + ALIGN(pos - (u8 *)rthdr, 2); | |
426 | he = (struct ieee80211_radiotap_he *)pos; | |
427 | ||
428 | he->data1 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA1_FORMAT_SU | | |
429 | IEEE80211_RADIOTAP_HE_DATA1_DATA_MCS_KNOWN | | |
430 | IEEE80211_RADIOTAP_HE_DATA1_DATA_DCM_KNOWN | | |
431 | IEEE80211_RADIOTAP_HE_DATA1_BW_RU_ALLOC_KNOWN); | |
432 | ||
433 | he->data2 = cpu_to_le16(IEEE80211_RADIOTAP_HE_DATA2_GI_KNOWN); | |
434 | ||
435 | #define HE_PREP(f, val) le16_encode_bits(val, IEEE80211_RADIOTAP_HE_##f) | |
436 | ||
437 | he->data6 |= HE_PREP(DATA6_NSTS, status->rate->nss); | |
438 | ||
439 | #define CHECK_GI(s) \ | |
440 | BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA5_GI_##s != \ | |
441 | (int)NL80211_RATE_INFO_HE_GI_##s) | |
442 | ||
443 | CHECK_GI(0_8); | |
444 | CHECK_GI(1_6); | |
445 | CHECK_GI(3_2); | |
446 | ||
447 | he->data3 |= HE_PREP(DATA3_DATA_MCS, status->rate->mcs); | |
448 | he->data3 |= HE_PREP(DATA3_DATA_DCM, status->rate->he_dcm); | |
449 | ||
450 | he->data5 |= HE_PREP(DATA5_GI, status->rate->he_gi); | |
451 | ||
452 | switch (status->rate->bw) { | |
453 | case RATE_INFO_BW_20: | |
454 | he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, | |
455 | IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_20MHZ); | |
456 | break; | |
457 | case RATE_INFO_BW_40: | |
458 | he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, | |
459 | IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_40MHZ); | |
460 | break; | |
461 | case RATE_INFO_BW_80: | |
462 | he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, | |
463 | IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_80MHZ); | |
464 | break; | |
465 | case RATE_INFO_BW_160: | |
466 | he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, | |
467 | IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_160MHZ); | |
468 | break; | |
469 | case RATE_INFO_BW_HE_RU: | |
470 | #define CHECK_RU_ALLOC(s) \ | |
471 | BUILD_BUG_ON(IEEE80211_RADIOTAP_HE_DATA5_DATA_BW_RU_ALLOC_##s##T != \ | |
472 | NL80211_RATE_INFO_HE_RU_ALLOC_##s + 4) | |
473 | ||
474 | CHECK_RU_ALLOC(26); | |
475 | CHECK_RU_ALLOC(52); | |
476 | CHECK_RU_ALLOC(106); | |
477 | CHECK_RU_ALLOC(242); | |
478 | CHECK_RU_ALLOC(484); | |
479 | CHECK_RU_ALLOC(996); | |
480 | CHECK_RU_ALLOC(2x996); | |
481 | ||
482 | he->data5 |= HE_PREP(DATA5_DATA_BW_RU_ALLOC, | |
483 | status->rate->he_ru_alloc + 4); | |
484 | break; | |
485 | default: | |
486 | WARN_ONCE(1, "Invalid SU BW %d\n", status->rate->bw); | |
487 | } | |
488 | ||
489 | pos += sizeof(struct ieee80211_radiotap_he); | |
490 | } | |
491 | ||
492 | if ((status && status->rate) || info->status.rates[0].idx < 0) | |
a8241310 KB |
493 | return; |
494 | ||
495 | /* IEEE80211_RADIOTAP_MCS | |
496 | * IEEE80211_RADIOTAP_VHT */ | |
497 | if (info->status.rates[0].flags & IEEE80211_TX_RC_MCS) { | |
7f2a5e21 HS |
498 | rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_MCS); |
499 | pos[0] = IEEE80211_RADIOTAP_MCS_HAVE_MCS | | |
500 | IEEE80211_RADIOTAP_MCS_HAVE_GI | | |
501 | IEEE80211_RADIOTAP_MCS_HAVE_BW; | |
502 | if (info->status.rates[0].flags & IEEE80211_TX_RC_SHORT_GI) | |
503 | pos[1] |= IEEE80211_RADIOTAP_MCS_SGI; | |
504 | if (info->status.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH) | |
505 | pos[1] |= IEEE80211_RADIOTAP_MCS_BW_40; | |
506 | if (info->status.rates[0].flags & IEEE80211_TX_RC_GREEN_FIELD) | |
507 | pos[1] |= IEEE80211_RADIOTAP_MCS_FMT_GF; | |
508 | pos[2] = info->status.rates[0].idx; | |
509 | pos += 3; | |
a8241310 KB |
510 | } else if (info->status.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) { |
511 | u16 known = local->hw.radiotap_vht_details & | |
512 | (IEEE80211_RADIOTAP_VHT_KNOWN_GI | | |
513 | IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH); | |
514 | ||
515 | rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_VHT); | |
516 | ||
517 | /* required alignment from rthdr */ | |
518 | pos = (u8 *)rthdr + ALIGN(pos - (u8 *)rthdr, 2); | |
7f2a5e21 | 519 | |
a8241310 KB |
520 | /* u16 known - IEEE80211_RADIOTAP_VHT_KNOWN_* */ |
521 | put_unaligned_le16(known, pos); | |
522 | pos += 2; | |
523 | ||
524 | /* u8 flags - IEEE80211_RADIOTAP_VHT_FLAG_* */ | |
525 | if (info->status.rates[0].flags & IEEE80211_TX_RC_SHORT_GI) | |
526 | *pos |= IEEE80211_RADIOTAP_VHT_FLAG_SGI; | |
527 | pos++; | |
528 | ||
529 | /* u8 bandwidth */ | |
530 | if (info->status.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH) | |
531 | *pos = 1; | |
532 | else if (info->status.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH) | |
533 | *pos = 4; | |
534 | else if (info->status.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH) | |
535 | *pos = 11; | |
536 | else /* IEEE80211_TX_RC_{20_MHZ_WIDTH,FIXME:DUP_DATA} */ | |
537 | *pos = 0; | |
538 | pos++; | |
539 | ||
540 | /* u8 mcs_nss[4] */ | |
541 | *pos = (ieee80211_rate_get_vht_mcs(&info->status.rates[0]) << 4) | | |
542 | ieee80211_rate_get_vht_nss(&info->status.rates[0]); | |
543 | pos += 4; | |
544 | ||
545 | /* u8 coding */ | |
546 | pos++; | |
547 | /* u8 group_id */ | |
548 | pos++; | |
549 | /* u16 partial_aid */ | |
550 | pos += 2; | |
551 | } | |
a2fe8166 HS |
552 | } |
553 | ||
1277b4a9 LK |
554 | /* |
555 | * Handles the tx for TDLS teardown frames. | |
556 | * If the frame wasn't ACKed by the peer - it will be re-sent through the AP | |
557 | */ | |
558 | static void ieee80211_tdls_td_tx_handle(struct ieee80211_local *local, | |
559 | struct ieee80211_sub_if_data *sdata, | |
560 | struct sk_buff *skb, u32 flags) | |
561 | { | |
562 | struct sk_buff *teardown_skb; | |
563 | struct sk_buff *orig_teardown_skb; | |
564 | bool is_teardown = false; | |
565 | ||
566 | /* Get the teardown data we need and free the lock */ | |
567 | spin_lock(&sdata->u.mgd.teardown_lock); | |
568 | teardown_skb = sdata->u.mgd.teardown_skb; | |
569 | orig_teardown_skb = sdata->u.mgd.orig_teardown_skb; | |
570 | if ((skb == orig_teardown_skb) && teardown_skb) { | |
571 | sdata->u.mgd.teardown_skb = NULL; | |
572 | sdata->u.mgd.orig_teardown_skb = NULL; | |
573 | is_teardown = true; | |
574 | } | |
575 | spin_unlock(&sdata->u.mgd.teardown_lock); | |
576 | ||
577 | if (is_teardown) { | |
578 | /* This mechanism relies on being able to get ACKs */ | |
30686bf7 | 579 | WARN_ON(!ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)); |
1277b4a9 LK |
580 | |
581 | /* Check if peer has ACKed */ | |
582 | if (flags & IEEE80211_TX_STAT_ACK) { | |
583 | dev_kfree_skb_any(teardown_skb); | |
584 | } else { | |
585 | tdls_dbg(sdata, | |
586 | "TDLS Resending teardown through AP\n"); | |
587 | ||
588 | ieee80211_subif_start_xmit(teardown_skb, skb->dev); | |
589 | } | |
590 | } | |
591 | } | |
592 | ||
b2eb0ee6 JB |
593 | static struct ieee80211_sub_if_data * |
594 | ieee80211_sdata_from_skb(struct ieee80211_local *local, struct sk_buff *skb) | |
595 | { | |
596 | struct ieee80211_sub_if_data *sdata; | |
597 | ||
598 | if (skb->dev) { | |
599 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
600 | if (!sdata->dev) | |
601 | continue; | |
602 | ||
603 | if (skb->dev == sdata->dev) | |
604 | return sdata; | |
605 | } | |
606 | ||
607 | return NULL; | |
608 | } | |
609 | ||
610 | return rcu_dereference(local->p2p_sdata); | |
611 | } | |
612 | ||
613 | static void ieee80211_report_ack_skb(struct ieee80211_local *local, | |
614 | struct ieee80211_tx_info *info, | |
615 | bool acked, bool dropped) | |
616 | { | |
617 | struct sk_buff *skb; | |
618 | unsigned long flags; | |
619 | ||
620 | spin_lock_irqsave(&local->ack_status_lock, flags); | |
d3e709e6 | 621 | skb = idr_remove(&local->ack_status_frames, info->ack_frame_id); |
b2eb0ee6 JB |
622 | spin_unlock_irqrestore(&local->ack_status_lock, flags); |
623 | ||
624 | if (!skb) | |
625 | return; | |
626 | ||
b2eb0ee6 | 627 | if (info->flags & IEEE80211_TX_INTFL_NL80211_FRAME_TX) { |
3b79af97 | 628 | u64 cookie = IEEE80211_SKB_CB(skb)->ack.cookie; |
b2eb0ee6 | 629 | struct ieee80211_sub_if_data *sdata; |
3b79af97 | 630 | struct ieee80211_hdr *hdr = (void *)skb->data; |
b2eb0ee6 JB |
631 | |
632 | rcu_read_lock(); | |
633 | sdata = ieee80211_sdata_from_skb(local, skb); | |
3b79af97 | 634 | if (sdata) { |
10cb8e61 MT |
635 | if (skb->protocol == sdata->control_port_protocol || |
636 | skb->protocol == cpu_to_be16(ETH_P_PREAUTH)) | |
86a1b9d7 MT |
637 | cfg80211_control_port_tx_status(&sdata->wdev, |
638 | cookie, | |
639 | skb->data, | |
640 | skb->len, | |
641 | acked, | |
642 | GFP_ATOMIC); | |
643 | else if (ieee80211_is_any_nullfunc(hdr->frame_control)) | |
3b79af97 | 644 | cfg80211_probe_status(sdata->dev, hdr->addr1, |
a78b26ff VN |
645 | cookie, acked, |
646 | info->status.ack_signal, | |
647 | info->status.is_valid_ack_signal, | |
3b79af97 | 648 | GFP_ATOMIC); |
a7528198 | 649 | else if (ieee80211_is_mgmt(hdr->frame_control)) |
3b79af97 JB |
650 | cfg80211_mgmt_tx_status(&sdata->wdev, cookie, |
651 | skb->data, skb->len, | |
652 | acked, GFP_ATOMIC); | |
a7528198 | 653 | else |
86a1b9d7 MT |
654 | pr_warn("Unknown status report in ack skb\n"); |
655 | ||
3b79af97 | 656 | } |
b2eb0ee6 JB |
657 | rcu_read_unlock(); |
658 | ||
8682250b AO |
659 | dev_kfree_skb_any(skb); |
660 | } else if (dropped) { | |
b2eb0ee6 JB |
661 | dev_kfree_skb_any(skb); |
662 | } else { | |
663 | /* consumes skb */ | |
664 | skb_complete_wifi_ack(skb, acked); | |
665 | } | |
666 | } | |
667 | ||
8a2fbedc JB |
668 | static void ieee80211_report_used_skb(struct ieee80211_local *local, |
669 | struct sk_buff *skb, bool dropped) | |
670 | { | |
671 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
7a89233a | 672 | u16 tx_time_est = ieee80211_info_get_tx_time_est(info); |
8a2fbedc JB |
673 | struct ieee80211_hdr *hdr = (void *)skb->data; |
674 | bool acked = info->flags & IEEE80211_TX_STAT_ACK; | |
675 | ||
676 | if (dropped) | |
677 | acked = false; | |
678 | ||
7a89233a THJ |
679 | if (tx_time_est) { |
680 | struct sta_info *sta; | |
681 | ||
682 | rcu_read_lock(); | |
683 | ||
684 | sta = sta_info_get_by_addrs(local, hdr->addr1, hdr->addr2); | |
685 | ieee80211_sta_update_pending_airtime(local, sta, | |
686 | skb_get_queue_mapping(skb), | |
687 | tx_time_est, | |
688 | true); | |
689 | rcu_read_unlock(); | |
690 | } | |
691 | ||
3b79af97 | 692 | if (info->flags & IEEE80211_TX_INTFL_MLME_CONN_TX) { |
b2eb0ee6 | 693 | struct ieee80211_sub_if_data *sdata; |
8a2fbedc JB |
694 | |
695 | rcu_read_lock(); | |
696 | ||
b2eb0ee6 | 697 | sdata = ieee80211_sdata_from_skb(local, skb); |
8a2fbedc | 698 | |
1672c0e3 | 699 | if (!sdata) { |
8a2fbedc | 700 | skb->dev = NULL; |
75dbf00b | 701 | } else { |
1277b4a9 LK |
702 | unsigned int hdr_size = |
703 | ieee80211_hdrlen(hdr->frame_control); | |
704 | ||
705 | /* Check to see if packet is a TDLS teardown packet */ | |
706 | if (ieee80211_is_data(hdr->frame_control) && | |
707 | (ieee80211_get_tdls_action(skb, hdr_size) == | |
708 | WLAN_TDLS_TEARDOWN)) | |
709 | ieee80211_tdls_td_tx_handle(local, sdata, skb, | |
710 | info->flags); | |
711 | else | |
712 | ieee80211_mgd_conn_tx_status(sdata, | |
713 | hdr->frame_control, | |
714 | acked); | |
8a2fbedc JB |
715 | } |
716 | ||
717 | rcu_read_unlock(); | |
b2eb0ee6 JB |
718 | } else if (info->ack_frame_id) { |
719 | ieee80211_report_ack_skb(local, info, acked, dropped); | |
8a2fbedc | 720 | } |
2cc6f5a7 JB |
721 | |
722 | if (!dropped && skb->destructor) { | |
723 | skb->wifi_acked_valid = 1; | |
724 | skb->wifi_acked = acked; | |
725 | } | |
5d473fed BA |
726 | |
727 | ieee80211_led_tx(local); | |
34b1e0e9 SS |
728 | |
729 | if (skb_has_frag_list(skb)) { | |
730 | kfree_skb_list(skb_shinfo(skb)->frag_list); | |
731 | skb_shinfo(skb)->frag_list = NULL; | |
732 | } | |
8a2fbedc JB |
733 | } |
734 | ||
99ba2a14 JB |
735 | /* |
736 | * Use a static threshold for now, best value to be determined | |
737 | * by testing ... | |
738 | * Should it depend on: | |
739 | * - on # of retransmissions | |
740 | * - current throughput (higher value for higher tpt)? | |
741 | */ | |
742 | #define STA_LOST_PKT_THRESHOLD 50 | |
47df8e05 | 743 | #define STA_LOST_PKT_TIME HZ /* 1 sec since last ACK */ |
9d58f25b LK |
744 | #define STA_LOST_TDLS_PKT_THRESHOLD 10 |
745 | #define STA_LOST_TDLS_PKT_TIME (10*HZ) /* 10secs since last ACK */ | |
99ba2a14 | 746 | |
ad9dda63 FF |
747 | static void ieee80211_lost_packet(struct sta_info *sta, |
748 | struct ieee80211_tx_info *info) | |
abd43a6a | 749 | { |
47df8e05 FF |
750 | unsigned long pkt_time = STA_LOST_PKT_TIME; |
751 | unsigned int pkt_thr = STA_LOST_PKT_THRESHOLD; | |
752 | ||
e8a24cd4 RM |
753 | /* If driver relies on its own algorithm for station kickout, skip |
754 | * mac80211 packet loss mechanism. | |
755 | */ | |
756 | if (ieee80211_hw_check(&sta->local->hw, REPORTS_LOW_ACK)) | |
757 | return; | |
758 | ||
abd43a6a FF |
759 | /* This packet was aggregated but doesn't carry status info */ |
760 | if ((info->flags & IEEE80211_TX_CTL_AMPDU) && | |
761 | !(info->flags & IEEE80211_TX_STAT_AMPDU)) | |
762 | return; | |
763 | ||
e5a9f8d0 | 764 | sta->status_stats.lost_packets++; |
47df8e05 FF |
765 | if (sta->sta.tdls) { |
766 | pkt_time = STA_LOST_TDLS_PKT_TIME; | |
767 | pkt_thr = STA_LOST_PKT_THRESHOLD; | |
768 | } | |
9d58f25b LK |
769 | |
770 | /* | |
771 | * If we're in TDLS mode, make sure that all STA_LOST_TDLS_PKT_THRESHOLD | |
772 | * of the last packets were lost, and that no ACK was received in the | |
773 | * last STA_LOST_TDLS_PKT_TIME ms, before triggering the CQM packet-loss | |
774 | * mechanism. | |
47df8e05 | 775 | * For non-TDLS, use STA_LOST_PKT_THRESHOLD and STA_LOST_PKT_TIME |
9d58f25b | 776 | */ |
47df8e05 FF |
777 | if (sta->status_stats.lost_packets < pkt_thr || |
778 | !time_after(jiffies, sta->status_stats.last_pkt_time + pkt_time)) | |
abd43a6a FF |
779 | return; |
780 | ||
781 | cfg80211_cqm_pktloss_notify(sta->sdata->dev, sta->sta.addr, | |
e5a9f8d0 JB |
782 | sta->status_stats.lost_packets, GFP_ATOMIC); |
783 | sta->status_stats.lost_packets = 0; | |
abd43a6a FF |
784 | } |
785 | ||
7e1cdcbb FF |
786 | static int ieee80211_tx_get_rates(struct ieee80211_hw *hw, |
787 | struct ieee80211_tx_info *info, | |
788 | int *retry_count) | |
fe7a5d5c | 789 | { |
7e1cdcbb FF |
790 | int count = -1; |
791 | int i; | |
fe7a5d5c JB |
792 | |
793 | for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { | |
d01b3160 LB |
794 | if ((info->flags & IEEE80211_TX_CTL_AMPDU) && |
795 | !(info->flags & IEEE80211_TX_STAT_AMPDU)) { | |
796 | /* just the first aggr frame carry status info */ | |
797 | info->status.rates[i].idx = -1; | |
798 | info->status.rates[i].count = 0; | |
799 | break; | |
800 | } else if (info->status.rates[i].idx < 0) { | |
be7974aa HS |
801 | break; |
802 | } else if (i >= hw->max_report_rates) { | |
803 | /* the HW cannot have attempted that rate */ | |
fe7a5d5c JB |
804 | info->status.rates[i].idx = -1; |
805 | info->status.rates[i].count = 0; | |
be7974aa | 806 | break; |
fe7a5d5c JB |
807 | } |
808 | ||
7e1cdcbb | 809 | count += info->status.rates[i].count; |
fe7a5d5c | 810 | } |
be7974aa | 811 | |
7e1cdcbb FF |
812 | if (count < 0) |
813 | count = 0; | |
814 | ||
815 | *retry_count = count; | |
f2a0c187 | 816 | return i - 1; |
7e1cdcbb FF |
817 | } |
818 | ||
4dc792b8 HS |
819 | void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, |
820 | struct ieee80211_supported_band *sband, | |
b7b2e8ca JC |
821 | int retry_count, int shift, bool send_to_cooked, |
822 | struct ieee80211_tx_status *status) | |
7e1cdcbb FF |
823 | { |
824 | struct sk_buff *skb2; | |
4dc792b8 HS |
825 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
826 | struct ieee80211_sub_if_data *sdata; | |
827 | struct net_device *prev_dev = NULL; | |
828 | int rtap_len; | |
829 | ||
830 | /* send frame to monitor interfaces now */ | |
3d07ffca | 831 | rtap_len = ieee80211_tx_radiotap_len(info, status); |
4dc792b8 HS |
832 | if (WARN_ON_ONCE(skb_headroom(skb) < rtap_len)) { |
833 | pr_err("ieee80211_tx_status: headroom too small\n"); | |
834 | dev_kfree_skb(skb); | |
835 | return; | |
836 | } | |
837 | ieee80211_add_tx_radiotap_header(local, sband, skb, retry_count, | |
3d07ffca | 838 | rtap_len, shift, status); |
4dc792b8 HS |
839 | |
840 | /* XXX: is this sufficient for BPF? */ | |
d57a544d | 841 | skb_reset_mac_header(skb); |
4dc792b8 HS |
842 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
843 | skb->pkt_type = PACKET_OTHERHOST; | |
844 | skb->protocol = htons(ETH_P_802_2); | |
845 | memset(skb->cb, 0, sizeof(skb->cb)); | |
846 | ||
847 | rcu_read_lock(); | |
848 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
849 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { | |
850 | if (!ieee80211_sdata_running(sdata)) | |
851 | continue; | |
852 | ||
d8212184 | 853 | if ((sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) && |
4dc792b8 HS |
854 | !send_to_cooked) |
855 | continue; | |
856 | ||
857 | if (prev_dev) { | |
858 | skb2 = skb_clone(skb, GFP_ATOMIC); | |
859 | if (skb2) { | |
860 | skb2->dev = prev_dev; | |
861 | netif_rx(skb2); | |
862 | } | |
863 | } | |
864 | ||
865 | prev_dev = sdata->dev; | |
866 | } | |
867 | } | |
868 | if (prev_dev) { | |
869 | skb->dev = prev_dev; | |
870 | netif_rx(skb); | |
871 | skb = NULL; | |
872 | } | |
873 | rcu_read_unlock(); | |
874 | dev_kfree_skb(skb); | |
875 | } | |
876 | ||
5fe49a9d | 877 | static void __ieee80211_tx_status(struct ieee80211_hw *hw, |
3318111c FF |
878 | struct ieee80211_tx_status *status, |
879 | int rates_idx, int retry_count) | |
4dc792b8 | 880 | { |
5fe49a9d | 881 | struct sk_buff *skb = status->skb; |
7e1cdcbb FF |
882 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
883 | struct ieee80211_local *local = hw_to_local(hw); | |
5fe49a9d FF |
884 | struct ieee80211_tx_info *info = status->info; |
885 | struct sta_info *sta; | |
7e1cdcbb FF |
886 | __le16 fc; |
887 | struct ieee80211_supported_band *sband; | |
7e1cdcbb FF |
888 | bool send_to_cooked; |
889 | bool acked; | |
5972fa15 | 890 | bool noack_success; |
7e1cdcbb | 891 | struct ieee80211_bar *bar; |
7e1cdcbb | 892 | int shift = 0; |
5e06a9e8 | 893 | int tid = IEEE80211_NUM_TIDS; |
7e1cdcbb | 894 | |
fe7a5d5c | 895 | sband = local->hw.wiphy->bands[info->band]; |
375177bf | 896 | fc = hdr->frame_control; |
fe7a5d5c | 897 | |
5fe49a9d FF |
898 | if (status->sta) { |
899 | sta = container_of(status->sta, struct sta_info, sta); | |
2103dec1 SW |
900 | shift = ieee80211_vif_get_shift(&sta->sdata->vif); |
901 | ||
47086fc5 | 902 | if (info->flags & IEEE80211_TX_STATUS_EOSP) |
c2c98fde | 903 | clear_sta_flag(sta, WLAN_STA_SP); |
47086fc5 | 904 | |
04ac3c0e | 905 | acked = !!(info->flags & IEEE80211_TX_STAT_ACK); |
5972fa15 MT |
906 | noack_success = !!(info->flags & |
907 | IEEE80211_TX_STAT_NOACK_TRANSMITTED); | |
71f2c347 MH |
908 | |
909 | /* mesh Peer Service Period support */ | |
910 | if (ieee80211_vif_is_mesh(&sta->sdata->vif) && | |
911 | ieee80211_is_data_qos(fc)) | |
912 | ieee80211_mpsp_trigger_process( | |
913 | ieee80211_get_qos_ctl(hdr), sta, true, acked); | |
914 | ||
30686bf7 | 915 | if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL) && |
00a9a6d1 | 916 | (ieee80211_is_data(hdr->frame_control)) && |
0c869808 | 917 | (rates_idx != -1)) |
e5a9f8d0 JB |
918 | sta->tx_stats.last_rate = |
919 | info->status.rates[rates_idx]; | |
0c869808 | 920 | |
fe7a5d5c JB |
921 | if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) && |
922 | (ieee80211_is_data_qos(fc))) { | |
79c892b8 | 923 | u16 ssn; |
fe7a5d5c JB |
924 | u8 *qc; |
925 | ||
926 | qc = ieee80211_get_qos_ctl(hdr); | |
927 | tid = qc[0] & 0xf; | |
928 | ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10) | |
929 | & IEEE80211_SCTL_SEQ); | |
8c771244 | 930 | ieee80211_send_bar(&sta->sdata->vif, hdr->addr1, |
fe7a5d5c | 931 | tid, ssn); |
79c892b8 JB |
932 | } else if (ieee80211_is_data_qos(fc)) { |
933 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
934 | ||
935 | tid = qc[0] & 0xf; | |
fe7a5d5c JB |
936 | } |
937 | ||
e69deded | 938 | if (!acked && ieee80211_is_back_req(fc)) { |
79c892b8 | 939 | u16 control; |
7107676a | 940 | |
e69deded | 941 | /* |
7107676a FF |
942 | * BAR failed, store the last SSN and retry sending |
943 | * the BAR when the next unicast transmission on the | |
944 | * same TID succeeds. | |
e69deded HS |
945 | */ |
946 | bar = (struct ieee80211_bar *) skb->data; | |
7107676a FF |
947 | control = le16_to_cpu(bar->control); |
948 | if (!(control & IEEE80211_BAR_CTRL_MULTI_TID)) { | |
f0425bed FF |
949 | u16 ssn = le16_to_cpu(bar->start_seq_num); |
950 | ||
7107676a | 951 | tid = (control & |
e69deded HS |
952 | IEEE80211_BAR_CTRL_TID_INFO_MASK) >> |
953 | IEEE80211_BAR_CTRL_TID_INFO_SHIFT; | |
f0425bed | 954 | |
8df6b7b1 | 955 | ieee80211_set_bar_pending(sta, tid, ssn); |
e69deded HS |
956 | } |
957 | } | |
958 | ||
fe7a5d5c JB |
959 | if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) { |
960 | ieee80211_handle_filtered_frame(local, sta, skb); | |
fe7a5d5c | 961 | return; |
3318111c | 962 | } else if (ieee80211_is_data_present(fc)) { |
5972fa15 | 963 | if (!acked && !noack_success) |
3318111c | 964 | sta->status_stats.msdu_failed[tid]++; |
e5a9f8d0 | 965 | |
3318111c FF |
966 | sta->status_stats.msdu_retries[tid] += |
967 | retry_count; | |
fe7a5d5c JB |
968 | } |
969 | ||
04ac3c0e | 970 | if (!(info->flags & IEEE80211_TX_CTL_INJECTED) && acked) |
0f78231b | 971 | ieee80211_frame_acked(sta, skb); |
99ba2a14 | 972 | |
fe7a5d5c JB |
973 | } |
974 | ||
fe7a5d5c JB |
975 | /* SNMP counters |
976 | * Fragments are passed to low-level drivers as separate skbs, so these | |
977 | * are actually fragments, not frames. Update frame counters only for | |
978 | * the first fragment of the frame. */ | |
5cf16616 SM |
979 | if ((info->flags & IEEE80211_TX_STAT_ACK) || |
980 | (info->flags & IEEE80211_TX_STAT_NOACK_TRANSMITTED)) { | |
adf5ace5 | 981 | if (ieee80211_is_first_frag(hdr->seq_ctrl)) { |
c206ca67 | 982 | I802_DEBUG_INC(local->dot11TransmittedFrameCount); |
85b89af0 | 983 | if (is_multicast_ether_addr(ieee80211_get_DA(hdr))) |
c206ca67 | 984 | I802_DEBUG_INC(local->dot11MulticastTransmittedFrameCount); |
fe7a5d5c | 985 | if (retry_count > 0) |
c206ca67 | 986 | I802_DEBUG_INC(local->dot11RetryCount); |
fe7a5d5c | 987 | if (retry_count > 1) |
c206ca67 | 988 | I802_DEBUG_INC(local->dot11MultipleRetryCount); |
fe7a5d5c JB |
989 | } |
990 | ||
991 | /* This counter shall be incremented for an acknowledged MPDU | |
992 | * with an individual address in the address 1 field or an MPDU | |
993 | * with a multicast address in the address 1 field of type Data | |
994 | * or Management. */ | |
995 | if (!is_multicast_ether_addr(hdr->addr1) || | |
adf5ace5 HS |
996 | ieee80211_is_data(fc) || |
997 | ieee80211_is_mgmt(fc)) | |
c206ca67 | 998 | I802_DEBUG_INC(local->dot11TransmittedFragmentCount); |
fe7a5d5c | 999 | } else { |
adf5ace5 | 1000 | if (ieee80211_is_first_frag(hdr->seq_ctrl)) |
c206ca67 | 1001 | I802_DEBUG_INC(local->dot11FailedCount); |
fe7a5d5c JB |
1002 | } |
1003 | ||
30b2f0be | 1004 | if (ieee80211_is_any_nullfunc(fc) && |
08a5bdde | 1005 | ieee80211_has_pm(fc) && |
30686bf7 | 1006 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) && |
375177bf VN |
1007 | !(info->flags & IEEE80211_TX_CTL_INJECTED) && |
1008 | local->ps_sdata && !(local->scanning)) { | |
1009 | if (info->flags & IEEE80211_TX_STAT_ACK) { | |
1010 | local->ps_sdata->u.mgd.flags |= | |
1011 | IEEE80211_STA_NULLFUNC_ACKED; | |
375177bf VN |
1012 | } else |
1013 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
1014 | msecs_to_jiffies(10)); | |
1015 | } | |
1016 | ||
8a2fbedc | 1017 | ieee80211_report_used_skb(local, skb, false); |
a729cff8 | 1018 | |
fe7a5d5c JB |
1019 | /* this was a transmitted frame, but now we want to reuse it */ |
1020 | skb_orphan(skb); | |
1021 | ||
eaf55530 FF |
1022 | /* Need to make a copy before skb->cb gets cleared */ |
1023 | send_to_cooked = !!(info->flags & IEEE80211_TX_CTL_INJECTED) || | |
adf5ace5 | 1024 | !(ieee80211_is_data(fc)); |
eaf55530 | 1025 | |
fe7a5d5c JB |
1026 | /* |
1027 | * This is a bit racy but we can avoid a lot of work | |
1028 | * with this test... | |
1029 | */ | |
eaf55530 | 1030 | if (!local->monitors && (!send_to_cooked || !local->cooked_mntrs)) { |
f02dff93 FF |
1031 | if (status->free_list) |
1032 | list_add_tail(&skb->list, status->free_list); | |
1033 | else | |
1034 | dev_kfree_skb(skb); | |
fe7a5d5c JB |
1035 | return; |
1036 | } | |
1037 | ||
4dc792b8 | 1038 | /* send to monitor interfaces */ |
b7b2e8ca JC |
1039 | ieee80211_tx_monitor(local, skb, sband, retry_count, shift, |
1040 | send_to_cooked, status); | |
fe7a5d5c | 1041 | } |
5fe49a9d FF |
1042 | |
1043 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) | |
1044 | { | |
1045 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
1046 | struct ieee80211_local *local = hw_to_local(hw); | |
1047 | struct ieee80211_tx_status status = { | |
1048 | .skb = skb, | |
1049 | .info = IEEE80211_SKB_CB(skb), | |
1050 | }; | |
5fe49a9d FF |
1051 | struct sta_info *sta; |
1052 | ||
1053 | rcu_read_lock(); | |
1054 | ||
5072f73c THJ |
1055 | sta = sta_info_get_by_addrs(local, hdr->addr1, hdr->addr2); |
1056 | if (sta) | |
5fe49a9d | 1057 | status.sta = &sta->sta; |
5fe49a9d | 1058 | |
3318111c | 1059 | ieee80211_tx_status_ext(hw, &status); |
5fe49a9d FF |
1060 | rcu_read_unlock(); |
1061 | } | |
fe7a5d5c | 1062 | EXPORT_SYMBOL(ieee80211_tx_status); |
8178d38b | 1063 | |
5fe49a9d FF |
1064 | void ieee80211_tx_status_ext(struct ieee80211_hw *hw, |
1065 | struct ieee80211_tx_status *status) | |
eefebd31 FF |
1066 | { |
1067 | struct ieee80211_local *local = hw_to_local(hw); | |
5fe49a9d FF |
1068 | struct ieee80211_tx_info *info = status->info; |
1069 | struct ieee80211_sta *pubsta = status->sta; | |
a260e495 | 1070 | struct sk_buff *skb = status->skb; |
eefebd31 | 1071 | struct ieee80211_supported_band *sband; |
a260e495 | 1072 | struct sta_info *sta = NULL; |
3318111c | 1073 | int rates_idx, retry_count; |
eefebd31 | 1074 | bool acked, noack_success; |
a260e495 | 1075 | u16 tx_time_est; |
eefebd31 | 1076 | |
8ed37e79 FF |
1077 | if (pubsta) { |
1078 | sta = container_of(pubsta, struct sta_info, sta); | |
1079 | ||
1080 | if (status->rate) | |
1081 | sta->tx_stats.last_rate_info = *status->rate; | |
1082 | } | |
1083 | ||
23e9f1ef FF |
1084 | if (skb && (tx_time_est = |
1085 | ieee80211_info_get_tx_time_est(IEEE80211_SKB_CB(skb))) > 0) { | |
1086 | /* Do this here to avoid the expensive lookup of the sta | |
1087 | * in ieee80211_report_used_skb(). | |
1088 | */ | |
1089 | ieee80211_sta_update_pending_airtime(local, sta, | |
1090 | skb_get_queue_mapping(skb), | |
1091 | tx_time_est, | |
1092 | true); | |
1093 | ieee80211_info_set_tx_time_est(IEEE80211_SKB_CB(skb), 0); | |
1094 | } | |
1095 | ||
1096 | if (!status->info) | |
1097 | goto free; | |
1098 | ||
3318111c | 1099 | rates_idx = ieee80211_tx_get_rates(hw, info, &retry_count); |
eefebd31 FF |
1100 | |
1101 | sband = hw->wiphy->bands[info->band]; | |
1102 | ||
1103 | acked = !!(info->flags & IEEE80211_TX_STAT_ACK); | |
1104 | noack_success = !!(info->flags & IEEE80211_TX_STAT_NOACK_TRANSMITTED); | |
1105 | ||
1106 | if (pubsta) { | |
e3f25908 FF |
1107 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
1108 | ||
5972fa15 | 1109 | if (!acked && !noack_success) |
eefebd31 FF |
1110 | sta->status_stats.retry_failed++; |
1111 | sta->status_stats.retry_count += retry_count; | |
1112 | ||
3318111c | 1113 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { |
e3f25908 FF |
1114 | if (sdata->vif.type == NL80211_IFTYPE_STATION && |
1115 | skb && !(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP)) | |
1116 | ieee80211_sta_tx_notify(sdata, (void *) skb->data, | |
1117 | acked, info->status.tx_time); | |
1118 | ||
3318111c FF |
1119 | if (acked) { |
1120 | sta->status_stats.last_ack = jiffies; | |
eefebd31 | 1121 | |
3318111c FF |
1122 | if (sta->status_stats.lost_packets) |
1123 | sta->status_stats.lost_packets = 0; | |
eefebd31 | 1124 | |
3318111c FF |
1125 | /* Track when last packet was ACKed */ |
1126 | sta->status_stats.last_pkt_time = jiffies; | |
1127 | ||
e3f25908 FF |
1128 | /* Reset connection monitor */ |
1129 | if (sdata->vif.type == NL80211_IFTYPE_STATION && | |
1130 | unlikely(sdata->u.mgd.probe_send_count > 0)) | |
1131 | sdata->u.mgd.probe_send_count = 0; | |
1132 | ||
3318111c FF |
1133 | if (info->status.is_valid_ack_signal) { |
1134 | sta->status_stats.last_ack_signal = | |
1135 | (s8)info->status.ack_signal; | |
1136 | sta->status_stats.ack_signal_filled = true; | |
1137 | ewma_avg_signal_add(&sta->status_stats.avg_ack_signal, | |
1138 | -info->status.ack_signal); | |
1139 | } | |
1140 | } else if (test_sta_flag(sta, WLAN_STA_PS_STA)) { | |
1d182885 FF |
1141 | /* |
1142 | * The STA is in power save mode, so assume | |
1143 | * that this TX packet failed because of that. | |
1144 | */ | |
1145 | if (skb) | |
1146 | ieee80211_handle_filtered_frame(local, sta, skb); | |
3318111c FF |
1147 | return; |
1148 | } else if (noack_success) { | |
1149 | /* nothing to do here, do not account as lost */ | |
1150 | } else { | |
1151 | ieee80211_lost_packet(sta, info); | |
1152 | } | |
eefebd31 FF |
1153 | } |
1154 | ||
5fe49a9d | 1155 | rate_control_tx_status(local, sband, status); |
c4205510 YCP |
1156 | if (ieee80211_vif_is_mesh(&sta->sdata->vif)) |
1157 | ieee80211s_update_metric(local, sta, status); | |
eefebd31 FF |
1158 | } |
1159 | ||
a260e495 | 1160 | if (skb && !(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP)) |
3318111c FF |
1161 | return __ieee80211_tx_status(hw, status, rates_idx, |
1162 | retry_count); | |
1163 | ||
eefebd31 FF |
1164 | if (acked || noack_success) { |
1165 | I802_DEBUG_INC(local->dot11TransmittedFrameCount); | |
1166 | if (!pubsta) | |
1167 | I802_DEBUG_INC(local->dot11MulticastTransmittedFrameCount); | |
1168 | if (retry_count > 0) | |
1169 | I802_DEBUG_INC(local->dot11RetryCount); | |
1170 | if (retry_count > 1) | |
1171 | I802_DEBUG_INC(local->dot11MultipleRetryCount); | |
1172 | } else { | |
1173 | I802_DEBUG_INC(local->dot11FailedCount); | |
1174 | } | |
a260e495 | 1175 | |
23e9f1ef | 1176 | free: |
a260e495 FF |
1177 | if (!skb) |
1178 | return; | |
1179 | ||
1180 | ieee80211_report_used_skb(local, skb, false); | |
f02dff93 FF |
1181 | if (status->free_list) |
1182 | list_add_tail(&skb->list, status->free_list); | |
1183 | else | |
1184 | dev_kfree_skb(skb); | |
eefebd31 | 1185 | } |
5fe49a9d | 1186 | EXPORT_SYMBOL(ieee80211_tx_status_ext); |
eefebd31 | 1187 | |
f8252e7b AK |
1188 | void ieee80211_tx_rate_update(struct ieee80211_hw *hw, |
1189 | struct ieee80211_sta *pubsta, | |
1190 | struct ieee80211_tx_info *info) | |
1191 | { | |
1192 | struct ieee80211_local *local = hw_to_local(hw); | |
1193 | struct ieee80211_supported_band *sband = hw->wiphy->bands[info->band]; | |
1194 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1195 | struct ieee80211_tx_status status = { | |
1196 | .info = info, | |
1197 | .sta = pubsta, | |
1198 | }; | |
1199 | ||
1200 | rate_control_tx_status(local, sband, &status); | |
1201 | ||
1202 | if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) | |
1203 | sta->tx_stats.last_rate = info->status.rates[0]; | |
1204 | } | |
1205 | EXPORT_SYMBOL(ieee80211_tx_rate_update); | |
1206 | ||
50ff477a JC |
1207 | void ieee80211_tx_status_8023(struct ieee80211_hw *hw, |
1208 | struct ieee80211_vif *vif, | |
1209 | struct sk_buff *skb) | |
1210 | { | |
50ff477a | 1211 | struct ieee80211_sub_if_data *sdata; |
a260e495 FF |
1212 | struct ieee80211_tx_status status = { |
1213 | .skb = skb, | |
1214 | .info = IEEE80211_SKB_CB(skb), | |
1215 | }; | |
50ff477a | 1216 | struct sta_info *sta; |
50ff477a JC |
1217 | |
1218 | sdata = vif_to_sdata(vif); | |
1219 | ||
50ff477a JC |
1220 | rcu_read_lock(); |
1221 | ||
a260e495 FF |
1222 | if (!ieee80211_lookup_ra_sta(sdata, skb, &sta) && !IS_ERR(sta)) |
1223 | status.sta = &sta->sta; | |
50ff477a | 1224 | |
a260e495 | 1225 | ieee80211_tx_status_ext(hw, &status); |
50ff477a | 1226 | |
50ff477a | 1227 | rcu_read_unlock(); |
50ff477a JC |
1228 | } |
1229 | EXPORT_SYMBOL(ieee80211_tx_status_8023); | |
1230 | ||
8178d38b AN |
1231 | void ieee80211_report_low_ack(struct ieee80211_sta *pubsta, u32 num_packets) |
1232 | { | |
1233 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
1234 | cfg80211_cqm_pktloss_notify(sta->sdata->dev, sta->sta.addr, | |
1235 | num_packets, GFP_ATOMIC); | |
1236 | } | |
1237 | EXPORT_SYMBOL(ieee80211_report_low_ack); | |
6096de7f JB |
1238 | |
1239 | void ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb) | |
1240 | { | |
a729cff8 | 1241 | struct ieee80211_local *local = hw_to_local(hw); |
a729cff8 | 1242 | |
8a2fbedc | 1243 | ieee80211_report_used_skb(local, skb, true); |
6096de7f JB |
1244 | dev_kfree_skb_any(skb); |
1245 | } | |
1246 | EXPORT_SYMBOL(ieee80211_free_txskb); | |
1f98ab7f FF |
1247 | |
1248 | void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, | |
1249 | struct sk_buff_head *skbs) | |
1250 | { | |
1251 | struct sk_buff *skb; | |
1252 | ||
1253 | while ((skb = __skb_dequeue(skbs))) | |
1254 | ieee80211_free_txskb(hw, skb); | |
1255 | } |