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fe7a5d5c JB |
1 | /* |
2 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
3 | * Copyright 2005-2006, Devicescape Software, Inc. | |
4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
026331c4 | 5 | * Copyright 2008-2010 Johannes Berg <johannes@sipsolutions.net> |
d98ad83e | 6 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
fe7a5d5c JB |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
12 | ||
bc3b2d7f | 13 | #include <linux/export.h> |
888d04df | 14 | #include <linux/etherdevice.h> |
fe7a5d5c | 15 | #include <net/mac80211.h> |
d26ad377 | 16 | #include <asm/unaligned.h> |
fe7a5d5c JB |
17 | #include "ieee80211_i.h" |
18 | #include "rate.h" | |
19 | #include "mesh.h" | |
20 | #include "led.h" | |
948d887d | 21 | #include "wme.h" |
fe7a5d5c JB |
22 | |
23 | ||
24 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, | |
25 | struct sk_buff *skb) | |
26 | { | |
27 | struct ieee80211_local *local = hw_to_local(hw); | |
28 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
29 | int tmp; | |
30 | ||
31 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; | |
32 | skb_queue_tail(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS ? | |
33 | &local->skb_queue : &local->skb_queue_unreliable, skb); | |
34 | tmp = skb_queue_len(&local->skb_queue) + | |
35 | skb_queue_len(&local->skb_queue_unreliable); | |
36 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && | |
37 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
c3e7724b | 38 | ieee80211_free_txskb(hw, skb); |
fe7a5d5c JB |
39 | tmp--; |
40 | I802_DEBUG_INC(local->tx_status_drop); | |
41 | } | |
42 | tasklet_schedule(&local->tasklet); | |
43 | } | |
44 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); | |
45 | ||
46 | static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, | |
47 | struct sta_info *sta, | |
48 | struct sk_buff *skb) | |
49 | { | |
50 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
948d887d JB |
51 | struct ieee80211_hdr *hdr = (void *)skb->data; |
52 | int ac; | |
fe7a5d5c | 53 | |
890030d3 FF |
54 | if (info->flags & (IEEE80211_TX_CTL_NO_PS_BUFFER | |
55 | IEEE80211_TX_CTL_AMPDU)) { | |
da629cf1 HS |
56 | ieee80211_free_txskb(&local->hw, skb); |
57 | return; | |
58 | } | |
59 | ||
697e6a0f JB |
60 | /* |
61 | * This skb 'survived' a round-trip through the driver, and | |
62 | * hopefully the driver didn't mangle it too badly. However, | |
77c2061d | 63 | * we can definitely not rely on the control information |
c6fcf6bc JB |
64 | * being correct. Clear it so we don't get junk there, and |
65 | * indicate that it needs new processing, but must not be | |
66 | * modified/encrypted again. | |
697e6a0f JB |
67 | */ |
68 | memset(&info->control, 0, sizeof(info->control)); | |
18c94907 JB |
69 | |
70 | info->control.jiffies = jiffies; | |
71 | info->control.vif = &sta->sdata->vif; | |
c6fcf6bc JB |
72 | info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING | |
73 | IEEE80211_TX_INTFL_RETRANSMISSION; | |
eb7d3066 | 74 | info->flags &= ~IEEE80211_TX_TEMPORARY_FLAGS; |
697e6a0f | 75 | |
e5a9f8d0 | 76 | sta->status_stats.filtered++; |
fe7a5d5c | 77 | |
8a8656fa JB |
78 | /* |
79 | * Clear more-data bit on filtered frames, it might be set | |
80 | * but later frames might time out so it might have to be | |
81 | * clear again ... It's all rather unlikely (this frame | |
82 | * should time out first, right?) but let's not confuse | |
83 | * peers unnecessarily. | |
84 | */ | |
85 | if (hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) | |
86 | hdr->frame_control &= ~cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
87 | ||
948d887d | 88 | if (ieee80211_is_data_qos(hdr->frame_control)) { |
47086fc5 JB |
89 | u8 *p = ieee80211_get_qos_ctl(hdr); |
90 | int tid = *p & IEEE80211_QOS_CTL_TID_MASK; | |
91 | ||
92 | /* | |
93 | * Clear EOSP if set, this could happen e.g. | |
94 | * if an absence period (us being a P2P GO) | |
95 | * shortens the SP. | |
96 | */ | |
97 | if (*p & IEEE80211_QOS_CTL_EOSP) | |
98 | *p &= ~IEEE80211_QOS_CTL_EOSP; | |
731977e9 | 99 | ac = ieee80211_ac_from_tid(tid); |
948d887d JB |
100 | } else { |
101 | ac = IEEE80211_AC_BE; | |
102 | } | |
103 | ||
fe7a5d5c JB |
104 | /* |
105 | * Clear the TX filter mask for this STA when sending the next | |
106 | * packet. If the STA went to power save mode, this will happen | |
107 | * when it wakes up for the next time. | |
108 | */ | |
c2c98fde | 109 | set_sta_flag(sta, WLAN_STA_CLEAR_PS_FILT); |
f7418bc1 | 110 | ieee80211_clear_fast_xmit(sta); |
fe7a5d5c JB |
111 | |
112 | /* | |
113 | * This code races in the following way: | |
114 | * | |
115 | * (1) STA sends frame indicating it will go to sleep and does so | |
116 | * (2) hardware/firmware adds STA to filter list, passes frame up | |
117 | * (3) hardware/firmware processes TX fifo and suppresses a frame | |
118 | * (4) we get TX status before having processed the frame and | |
119 | * knowing that the STA has gone to sleep. | |
120 | * | |
121 | * This is actually quite unlikely even when both those events are | |
122 | * processed from interrupts coming in quickly after one another or | |
123 | * even at the same time because we queue both TX status events and | |
124 | * RX frames to be processed by a tasklet and process them in the | |
125 | * same order that they were received or TX status last. Hence, there | |
126 | * is no race as long as the frame RX is processed before the next TX | |
127 | * status, which drivers can ensure, see below. | |
128 | * | |
129 | * Note that this can only happen if the hardware or firmware can | |
130 | * actually add STAs to the filter list, if this is done by the | |
131 | * driver in response to set_tim() (which will only reduce the race | |
132 | * this whole filtering tries to solve, not completely solve it) | |
133 | * this situation cannot happen. | |
134 | * | |
135 | * To completely solve this race drivers need to make sure that they | |
136 | * (a) don't mix the irq-safe/not irq-safe TX status/RX processing | |
137 | * functions and | |
138 | * (b) always process RX events before TX status events if ordering | |
139 | * can be unknown, for example with different interrupt status | |
140 | * bits. | |
d057e5a3 AN |
141 | * (c) if PS mode transitions are manual (i.e. the flag |
142 | * %IEEE80211_HW_AP_LINK_PS is set), always process PS state | |
143 | * changes before calling TX status events if ordering can be | |
144 | * unknown. | |
fe7a5d5c | 145 | */ |
c2c98fde | 146 | if (test_sta_flag(sta, WLAN_STA_PS_STA) && |
948d887d JB |
147 | skb_queue_len(&sta->tx_filtered[ac]) < STA_MAX_TX_BUFFER) { |
148 | skb_queue_tail(&sta->tx_filtered[ac], skb); | |
c868cb35 | 149 | sta_info_recalc_tim(sta); |
60750397 JB |
150 | |
151 | if (!timer_pending(&local->sta_cleanup)) | |
152 | mod_timer(&local->sta_cleanup, | |
153 | round_jiffies(jiffies + | |
154 | STA_INFO_CLEANUP_INTERVAL)); | |
fe7a5d5c JB |
155 | return; |
156 | } | |
157 | ||
c2c98fde | 158 | if (!test_sta_flag(sta, WLAN_STA_PS_STA) && |
fe7a5d5c JB |
159 | !(info->flags & IEEE80211_TX_INTFL_RETRIED)) { |
160 | /* Software retry the packet once */ | |
161 | info->flags |= IEEE80211_TX_INTFL_RETRIED; | |
162 | ieee80211_add_pending_skb(local, skb); | |
163 | return; | |
164 | } | |
165 | ||
bdcbd8e0 JB |
166 | ps_dbg_ratelimited(sta->sdata, |
167 | "dropped TX filtered frame, queue_len=%d PS=%d @%lu\n", | |
168 | skb_queue_len(&sta->tx_filtered[ac]), | |
169 | !!test_sta_flag(sta, WLAN_STA_PS_STA), jiffies); | |
c3e7724b | 170 | ieee80211_free_txskb(&local->hw, skb); |
fe7a5d5c JB |
171 | } |
172 | ||
f0425bed FF |
173 | static void ieee80211_check_pending_bar(struct sta_info *sta, u8 *addr, u8 tid) |
174 | { | |
175 | struct tid_ampdu_tx *tid_tx; | |
176 | ||
177 | tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]); | |
178 | if (!tid_tx || !tid_tx->bar_pending) | |
179 | return; | |
180 | ||
181 | tid_tx->bar_pending = false; | |
8c771244 | 182 | ieee80211_send_bar(&sta->sdata->vif, addr, tid, tid_tx->failed_bar_ssn); |
f0425bed FF |
183 | } |
184 | ||
0f78231b JB |
185 | static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb) |
186 | { | |
187 | struct ieee80211_mgmt *mgmt = (void *) skb->data; | |
188 | struct ieee80211_local *local = sta->local; | |
189 | struct ieee80211_sub_if_data *sdata = sta->sdata; | |
190 | ||
30686bf7 | 191 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) |
b8da6b6a | 192 | sta->status_stats.last_ack = jiffies; |
0c5b9329 | 193 | |
f0425bed FF |
194 | if (ieee80211_is_data_qos(mgmt->frame_control)) { |
195 | struct ieee80211_hdr *hdr = (void *) skb->data; | |
196 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
197 | u16 tid = qc[0] & 0xf; | |
198 | ||
199 | ieee80211_check_pending_bar(sta, hdr->addr1, tid); | |
200 | } | |
201 | ||
0f78231b | 202 | if (ieee80211_is_action(mgmt->frame_control) && |
0f78231b | 203 | mgmt->u.action.category == WLAN_CATEGORY_HT && |
04ecd257 | 204 | mgmt->u.action.u.ht_smps.action == WLAN_HT_ACTION_SMPS && |
04ecd257 | 205 | ieee80211_sdata_running(sdata)) { |
687da132 EG |
206 | enum ieee80211_smps_mode smps_mode; |
207 | ||
0f78231b JB |
208 | switch (mgmt->u.action.u.ht_smps.smps_control) { |
209 | case WLAN_HT_SMPS_CONTROL_DYNAMIC: | |
687da132 | 210 | smps_mode = IEEE80211_SMPS_DYNAMIC; |
0f78231b JB |
211 | break; |
212 | case WLAN_HT_SMPS_CONTROL_STATIC: | |
687da132 | 213 | smps_mode = IEEE80211_SMPS_STATIC; |
0f78231b JB |
214 | break; |
215 | case WLAN_HT_SMPS_CONTROL_DISABLED: | |
216 | default: /* shouldn't happen since we don't send that */ | |
687da132 | 217 | smps_mode = IEEE80211_SMPS_OFF; |
0f78231b JB |
218 | break; |
219 | } | |
220 | ||
687da132 EG |
221 | if (sdata->vif.type == NL80211_IFTYPE_STATION) { |
222 | /* | |
223 | * This update looks racy, but isn't -- if we come | |
224 | * here we've definitely got a station that we're | |
225 | * talking to, and on a managed interface that can | |
226 | * only be the AP. And the only other place updating | |
227 | * this variable in managed mode is before association. | |
228 | */ | |
229 | sdata->smps_mode = smps_mode; | |
230 | ieee80211_queue_work(&local->hw, &sdata->recalc_smps); | |
231 | } else if (sdata->vif.type == NL80211_IFTYPE_AP || | |
232 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
233 | sta->known_smps_mode = smps_mode; | |
234 | } | |
0f78231b JB |
235 | } |
236 | } | |
237 | ||
f0425bed FF |
238 | static void ieee80211_set_bar_pending(struct sta_info *sta, u8 tid, u16 ssn) |
239 | { | |
240 | struct tid_ampdu_tx *tid_tx; | |
241 | ||
242 | tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]); | |
243 | if (!tid_tx) | |
244 | return; | |
245 | ||
246 | tid_tx->failed_bar_ssn = ssn; | |
247 | tid_tx->bar_pending = true; | |
248 | } | |
249 | ||
a2fe8166 HS |
250 | static int ieee80211_tx_radiotap_len(struct ieee80211_tx_info *info) |
251 | { | |
252 | int len = sizeof(struct ieee80211_radiotap_header); | |
253 | ||
254 | /* IEEE80211_RADIOTAP_RATE rate */ | |
255 | if (info->status.rates[0].idx >= 0 && | |
a8241310 KB |
256 | !(info->status.rates[0].flags & (IEEE80211_TX_RC_MCS | |
257 | IEEE80211_TX_RC_VHT_MCS))) | |
a2fe8166 HS |
258 | len += 2; |
259 | ||
260 | /* IEEE80211_RADIOTAP_TX_FLAGS */ | |
261 | len += 2; | |
262 | ||
263 | /* IEEE80211_RADIOTAP_DATA_RETRIES */ | |
264 | len += 1; | |
265 | ||
a8241310 KB |
266 | /* IEEE80211_RADIOTAP_MCS |
267 | * IEEE80211_RADIOTAP_VHT */ | |
268 | if (info->status.rates[0].idx >= 0) { | |
269 | if (info->status.rates[0].flags & IEEE80211_TX_RC_MCS) | |
270 | len += 3; | |
271 | else if (info->status.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) | |
272 | len = ALIGN(len, 2) + 12; | |
273 | } | |
7f2a5e21 | 274 | |
a2fe8166 HS |
275 | return len; |
276 | } | |
277 | ||
2103dec1 | 278 | static void |
a8241310 KB |
279 | ieee80211_add_tx_radiotap_header(struct ieee80211_local *local, |
280 | struct ieee80211_supported_band *sband, | |
2103dec1 SW |
281 | struct sk_buff *skb, int retry_count, |
282 | int rtap_len, int shift) | |
a2fe8166 HS |
283 | { |
284 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
285 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
286 | struct ieee80211_radiotap_header *rthdr; | |
287 | unsigned char *pos; | |
9c8f2c42 | 288 | u16 txflags; |
a2fe8166 HS |
289 | |
290 | rthdr = (struct ieee80211_radiotap_header *) skb_push(skb, rtap_len); | |
291 | ||
292 | memset(rthdr, 0, rtap_len); | |
293 | rthdr->it_len = cpu_to_le16(rtap_len); | |
294 | rthdr->it_present = | |
295 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | | |
296 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES)); | |
297 | pos = (unsigned char *)(rthdr + 1); | |
298 | ||
299 | /* | |
300 | * XXX: Once radiotap gets the bitmap reset thing the vendor | |
301 | * extensions proposal contains, we can actually report | |
302 | * the whole set of tries we did. | |
303 | */ | |
304 | ||
305 | /* IEEE80211_RADIOTAP_RATE */ | |
306 | if (info->status.rates[0].idx >= 0 && | |
a8241310 KB |
307 | !(info->status.rates[0].flags & (IEEE80211_TX_RC_MCS | |
308 | IEEE80211_TX_RC_VHT_MCS))) { | |
2103dec1 SW |
309 | u16 rate; |
310 | ||
a2fe8166 | 311 | rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_RATE); |
2103dec1 SW |
312 | rate = sband->bitrates[info->status.rates[0].idx].bitrate; |
313 | *pos = DIV_ROUND_UP(rate, 5 * (1 << shift)); | |
a2fe8166 HS |
314 | /* padding for tx flags */ |
315 | pos += 2; | |
316 | } | |
317 | ||
318 | /* IEEE80211_RADIOTAP_TX_FLAGS */ | |
319 | txflags = 0; | |
320 | if (!(info->flags & IEEE80211_TX_STAT_ACK) && | |
321 | !is_multicast_ether_addr(hdr->addr1)) | |
9c8f2c42 | 322 | txflags |= IEEE80211_RADIOTAP_F_TX_FAIL; |
a2fe8166 | 323 | |
311ab8e1 | 324 | if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) |
9c8f2c42 | 325 | txflags |= IEEE80211_RADIOTAP_F_TX_CTS; |
311ab8e1 | 326 | if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) |
9c8f2c42 | 327 | txflags |= IEEE80211_RADIOTAP_F_TX_RTS; |
a2fe8166 HS |
328 | |
329 | put_unaligned_le16(txflags, pos); | |
330 | pos += 2; | |
331 | ||
332 | /* IEEE80211_RADIOTAP_DATA_RETRIES */ | |
333 | /* for now report the total retry_count */ | |
334 | *pos = retry_count; | |
335 | pos++; | |
7f2a5e21 | 336 | |
a8241310 KB |
337 | if (info->status.rates[0].idx < 0) |
338 | return; | |
339 | ||
340 | /* IEEE80211_RADIOTAP_MCS | |
341 | * IEEE80211_RADIOTAP_VHT */ | |
342 | if (info->status.rates[0].flags & IEEE80211_TX_RC_MCS) { | |
7f2a5e21 HS |
343 | rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_MCS); |
344 | pos[0] = IEEE80211_RADIOTAP_MCS_HAVE_MCS | | |
345 | IEEE80211_RADIOTAP_MCS_HAVE_GI | | |
346 | IEEE80211_RADIOTAP_MCS_HAVE_BW; | |
347 | if (info->status.rates[0].flags & IEEE80211_TX_RC_SHORT_GI) | |
348 | pos[1] |= IEEE80211_RADIOTAP_MCS_SGI; | |
349 | if (info->status.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH) | |
350 | pos[1] |= IEEE80211_RADIOTAP_MCS_BW_40; | |
351 | if (info->status.rates[0].flags & IEEE80211_TX_RC_GREEN_FIELD) | |
352 | pos[1] |= IEEE80211_RADIOTAP_MCS_FMT_GF; | |
353 | pos[2] = info->status.rates[0].idx; | |
354 | pos += 3; | |
a8241310 KB |
355 | } else if (info->status.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) { |
356 | u16 known = local->hw.radiotap_vht_details & | |
357 | (IEEE80211_RADIOTAP_VHT_KNOWN_GI | | |
358 | IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH); | |
359 | ||
360 | rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_VHT); | |
361 | ||
362 | /* required alignment from rthdr */ | |
363 | pos = (u8 *)rthdr + ALIGN(pos - (u8 *)rthdr, 2); | |
7f2a5e21 | 364 | |
a8241310 KB |
365 | /* u16 known - IEEE80211_RADIOTAP_VHT_KNOWN_* */ |
366 | put_unaligned_le16(known, pos); | |
367 | pos += 2; | |
368 | ||
369 | /* u8 flags - IEEE80211_RADIOTAP_VHT_FLAG_* */ | |
370 | if (info->status.rates[0].flags & IEEE80211_TX_RC_SHORT_GI) | |
371 | *pos |= IEEE80211_RADIOTAP_VHT_FLAG_SGI; | |
372 | pos++; | |
373 | ||
374 | /* u8 bandwidth */ | |
375 | if (info->status.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH) | |
376 | *pos = 1; | |
377 | else if (info->status.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH) | |
378 | *pos = 4; | |
379 | else if (info->status.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH) | |
380 | *pos = 11; | |
381 | else /* IEEE80211_TX_RC_{20_MHZ_WIDTH,FIXME:DUP_DATA} */ | |
382 | *pos = 0; | |
383 | pos++; | |
384 | ||
385 | /* u8 mcs_nss[4] */ | |
386 | *pos = (ieee80211_rate_get_vht_mcs(&info->status.rates[0]) << 4) | | |
387 | ieee80211_rate_get_vht_nss(&info->status.rates[0]); | |
388 | pos += 4; | |
389 | ||
390 | /* u8 coding */ | |
391 | pos++; | |
392 | /* u8 group_id */ | |
393 | pos++; | |
394 | /* u16 partial_aid */ | |
395 | pos += 2; | |
396 | } | |
a2fe8166 HS |
397 | } |
398 | ||
1277b4a9 LK |
399 | /* |
400 | * Handles the tx for TDLS teardown frames. | |
401 | * If the frame wasn't ACKed by the peer - it will be re-sent through the AP | |
402 | */ | |
403 | static void ieee80211_tdls_td_tx_handle(struct ieee80211_local *local, | |
404 | struct ieee80211_sub_if_data *sdata, | |
405 | struct sk_buff *skb, u32 flags) | |
406 | { | |
407 | struct sk_buff *teardown_skb; | |
408 | struct sk_buff *orig_teardown_skb; | |
409 | bool is_teardown = false; | |
410 | ||
411 | /* Get the teardown data we need and free the lock */ | |
412 | spin_lock(&sdata->u.mgd.teardown_lock); | |
413 | teardown_skb = sdata->u.mgd.teardown_skb; | |
414 | orig_teardown_skb = sdata->u.mgd.orig_teardown_skb; | |
415 | if ((skb == orig_teardown_skb) && teardown_skb) { | |
416 | sdata->u.mgd.teardown_skb = NULL; | |
417 | sdata->u.mgd.orig_teardown_skb = NULL; | |
418 | is_teardown = true; | |
419 | } | |
420 | spin_unlock(&sdata->u.mgd.teardown_lock); | |
421 | ||
422 | if (is_teardown) { | |
423 | /* This mechanism relies on being able to get ACKs */ | |
30686bf7 | 424 | WARN_ON(!ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)); |
1277b4a9 LK |
425 | |
426 | /* Check if peer has ACKed */ | |
427 | if (flags & IEEE80211_TX_STAT_ACK) { | |
428 | dev_kfree_skb_any(teardown_skb); | |
429 | } else { | |
430 | tdls_dbg(sdata, | |
431 | "TDLS Resending teardown through AP\n"); | |
432 | ||
433 | ieee80211_subif_start_xmit(teardown_skb, skb->dev); | |
434 | } | |
435 | } | |
436 | } | |
437 | ||
b2eb0ee6 JB |
438 | static struct ieee80211_sub_if_data * |
439 | ieee80211_sdata_from_skb(struct ieee80211_local *local, struct sk_buff *skb) | |
440 | { | |
441 | struct ieee80211_sub_if_data *sdata; | |
442 | ||
443 | if (skb->dev) { | |
444 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
445 | if (!sdata->dev) | |
446 | continue; | |
447 | ||
448 | if (skb->dev == sdata->dev) | |
449 | return sdata; | |
450 | } | |
451 | ||
452 | return NULL; | |
453 | } | |
454 | ||
455 | return rcu_dereference(local->p2p_sdata); | |
456 | } | |
457 | ||
458 | static void ieee80211_report_ack_skb(struct ieee80211_local *local, | |
459 | struct ieee80211_tx_info *info, | |
460 | bool acked, bool dropped) | |
461 | { | |
462 | struct sk_buff *skb; | |
463 | unsigned long flags; | |
464 | ||
465 | spin_lock_irqsave(&local->ack_status_lock, flags); | |
d3e709e6 | 466 | skb = idr_remove(&local->ack_status_frames, info->ack_frame_id); |
b2eb0ee6 JB |
467 | spin_unlock_irqrestore(&local->ack_status_lock, flags); |
468 | ||
469 | if (!skb) | |
470 | return; | |
471 | ||
472 | if (dropped) { | |
473 | dev_kfree_skb_any(skb); | |
474 | return; | |
475 | } | |
476 | ||
477 | if (info->flags & IEEE80211_TX_INTFL_NL80211_FRAME_TX) { | |
3b79af97 | 478 | u64 cookie = IEEE80211_SKB_CB(skb)->ack.cookie; |
b2eb0ee6 | 479 | struct ieee80211_sub_if_data *sdata; |
3b79af97 | 480 | struct ieee80211_hdr *hdr = (void *)skb->data; |
b2eb0ee6 JB |
481 | |
482 | rcu_read_lock(); | |
483 | sdata = ieee80211_sdata_from_skb(local, skb); | |
3b79af97 JB |
484 | if (sdata) { |
485 | if (ieee80211_is_nullfunc(hdr->frame_control) || | |
486 | ieee80211_is_qos_nullfunc(hdr->frame_control)) | |
487 | cfg80211_probe_status(sdata->dev, hdr->addr1, | |
488 | cookie, acked, | |
489 | GFP_ATOMIC); | |
490 | else | |
491 | cfg80211_mgmt_tx_status(&sdata->wdev, cookie, | |
492 | skb->data, skb->len, | |
493 | acked, GFP_ATOMIC); | |
494 | } | |
b2eb0ee6 JB |
495 | rcu_read_unlock(); |
496 | ||
497 | dev_kfree_skb_any(skb); | |
498 | } else { | |
499 | /* consumes skb */ | |
500 | skb_complete_wifi_ack(skb, acked); | |
501 | } | |
502 | } | |
503 | ||
8a2fbedc JB |
504 | static void ieee80211_report_used_skb(struct ieee80211_local *local, |
505 | struct sk_buff *skb, bool dropped) | |
506 | { | |
507 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
508 | struct ieee80211_hdr *hdr = (void *)skb->data; | |
509 | bool acked = info->flags & IEEE80211_TX_STAT_ACK; | |
510 | ||
511 | if (dropped) | |
512 | acked = false; | |
513 | ||
3b79af97 | 514 | if (info->flags & IEEE80211_TX_INTFL_MLME_CONN_TX) { |
b2eb0ee6 | 515 | struct ieee80211_sub_if_data *sdata; |
8a2fbedc JB |
516 | |
517 | rcu_read_lock(); | |
518 | ||
b2eb0ee6 | 519 | sdata = ieee80211_sdata_from_skb(local, skb); |
8a2fbedc | 520 | |
1672c0e3 | 521 | if (!sdata) { |
8a2fbedc | 522 | skb->dev = NULL; |
75dbf00b | 523 | } else { |
1277b4a9 LK |
524 | unsigned int hdr_size = |
525 | ieee80211_hdrlen(hdr->frame_control); | |
526 | ||
527 | /* Check to see if packet is a TDLS teardown packet */ | |
528 | if (ieee80211_is_data(hdr->frame_control) && | |
529 | (ieee80211_get_tdls_action(skb, hdr_size) == | |
530 | WLAN_TDLS_TEARDOWN)) | |
531 | ieee80211_tdls_td_tx_handle(local, sdata, skb, | |
532 | info->flags); | |
533 | else | |
534 | ieee80211_mgd_conn_tx_status(sdata, | |
535 | hdr->frame_control, | |
536 | acked); | |
8a2fbedc JB |
537 | } |
538 | ||
539 | rcu_read_unlock(); | |
b2eb0ee6 JB |
540 | } else if (info->ack_frame_id) { |
541 | ieee80211_report_ack_skb(local, info, acked, dropped); | |
8a2fbedc | 542 | } |
2cc6f5a7 JB |
543 | |
544 | if (!dropped && skb->destructor) { | |
545 | skb->wifi_acked_valid = 1; | |
546 | skb->wifi_acked = acked; | |
547 | } | |
8a2fbedc JB |
548 | } |
549 | ||
99ba2a14 JB |
550 | /* |
551 | * Use a static threshold for now, best value to be determined | |
552 | * by testing ... | |
553 | * Should it depend on: | |
554 | * - on # of retransmissions | |
555 | * - current throughput (higher value for higher tpt)? | |
556 | */ | |
557 | #define STA_LOST_PKT_THRESHOLD 50 | |
9d58f25b LK |
558 | #define STA_LOST_TDLS_PKT_THRESHOLD 10 |
559 | #define STA_LOST_TDLS_PKT_TIME (10*HZ) /* 10secs since last ACK */ | |
99ba2a14 | 560 | |
ad9dda63 FF |
561 | static void ieee80211_lost_packet(struct sta_info *sta, |
562 | struct ieee80211_tx_info *info) | |
abd43a6a | 563 | { |
e8a24cd4 RM |
564 | /* If driver relies on its own algorithm for station kickout, skip |
565 | * mac80211 packet loss mechanism. | |
566 | */ | |
567 | if (ieee80211_hw_check(&sta->local->hw, REPORTS_LOW_ACK)) | |
568 | return; | |
569 | ||
abd43a6a FF |
570 | /* This packet was aggregated but doesn't carry status info */ |
571 | if ((info->flags & IEEE80211_TX_CTL_AMPDU) && | |
572 | !(info->flags & IEEE80211_TX_STAT_AMPDU)) | |
573 | return; | |
574 | ||
e5a9f8d0 JB |
575 | sta->status_stats.lost_packets++; |
576 | if (!sta->sta.tdls && | |
577 | sta->status_stats.lost_packets < STA_LOST_PKT_THRESHOLD) | |
9d58f25b LK |
578 | return; |
579 | ||
580 | /* | |
581 | * If we're in TDLS mode, make sure that all STA_LOST_TDLS_PKT_THRESHOLD | |
582 | * of the last packets were lost, and that no ACK was received in the | |
583 | * last STA_LOST_TDLS_PKT_TIME ms, before triggering the CQM packet-loss | |
584 | * mechanism. | |
585 | */ | |
586 | if (sta->sta.tdls && | |
e5a9f8d0 | 587 | (sta->status_stats.lost_packets < STA_LOST_TDLS_PKT_THRESHOLD || |
9d58f25b | 588 | time_before(jiffies, |
e5a9f8d0 JB |
589 | sta->status_stats.last_tdls_pkt_time + |
590 | STA_LOST_TDLS_PKT_TIME))) | |
abd43a6a FF |
591 | return; |
592 | ||
593 | cfg80211_cqm_pktloss_notify(sta->sdata->dev, sta->sta.addr, | |
e5a9f8d0 JB |
594 | sta->status_stats.lost_packets, GFP_ATOMIC); |
595 | sta->status_stats.lost_packets = 0; | |
abd43a6a FF |
596 | } |
597 | ||
7e1cdcbb FF |
598 | static int ieee80211_tx_get_rates(struct ieee80211_hw *hw, |
599 | struct ieee80211_tx_info *info, | |
600 | int *retry_count) | |
fe7a5d5c | 601 | { |
0c869808 | 602 | int rates_idx = -1; |
7e1cdcbb FF |
603 | int count = -1; |
604 | int i; | |
fe7a5d5c JB |
605 | |
606 | for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) { | |
d01b3160 LB |
607 | if ((info->flags & IEEE80211_TX_CTL_AMPDU) && |
608 | !(info->flags & IEEE80211_TX_STAT_AMPDU)) { | |
609 | /* just the first aggr frame carry status info */ | |
610 | info->status.rates[i].idx = -1; | |
611 | info->status.rates[i].count = 0; | |
612 | break; | |
613 | } else if (info->status.rates[i].idx < 0) { | |
be7974aa HS |
614 | break; |
615 | } else if (i >= hw->max_report_rates) { | |
616 | /* the HW cannot have attempted that rate */ | |
fe7a5d5c JB |
617 | info->status.rates[i].idx = -1; |
618 | info->status.rates[i].count = 0; | |
be7974aa | 619 | break; |
fe7a5d5c JB |
620 | } |
621 | ||
7e1cdcbb | 622 | count += info->status.rates[i].count; |
fe7a5d5c | 623 | } |
be7974aa HS |
624 | rates_idx = i - 1; |
625 | ||
7e1cdcbb FF |
626 | if (count < 0) |
627 | count = 0; | |
628 | ||
629 | *retry_count = count; | |
630 | return rates_idx; | |
631 | } | |
632 | ||
f027c2ac FF |
633 | void ieee80211_tx_status_noskb(struct ieee80211_hw *hw, |
634 | struct ieee80211_sta *pubsta, | |
635 | struct ieee80211_tx_info *info) | |
636 | { | |
637 | struct ieee80211_local *local = hw_to_local(hw); | |
638 | struct ieee80211_supported_band *sband; | |
639 | int retry_count; | |
5cf16616 | 640 | bool acked, noack_success; |
f027c2ac | 641 | |
872684b1 | 642 | ieee80211_tx_get_rates(hw, info, &retry_count); |
f027c2ac FF |
643 | |
644 | sband = hw->wiphy->bands[info->band]; | |
645 | ||
646 | acked = !!(info->flags & IEEE80211_TX_STAT_ACK); | |
5cf16616 SM |
647 | noack_success = !!(info->flags & IEEE80211_TX_STAT_NOACK_TRANSMITTED); |
648 | ||
f027c2ac FF |
649 | if (pubsta) { |
650 | struct sta_info *sta; | |
651 | ||
652 | sta = container_of(pubsta, struct sta_info, sta); | |
653 | ||
654 | if (!acked) | |
e5a9f8d0 JB |
655 | sta->status_stats.retry_failed++; |
656 | sta->status_stats.retry_count += retry_count; | |
f027c2ac FF |
657 | |
658 | if (acked) { | |
b8da6b6a | 659 | sta->status_stats.last_ack = jiffies; |
f027c2ac | 660 | |
e5a9f8d0 JB |
661 | if (sta->status_stats.lost_packets) |
662 | sta->status_stats.lost_packets = 0; | |
f027c2ac FF |
663 | |
664 | /* Track when last TDLS packet was ACKed */ | |
665 | if (test_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH)) | |
e5a9f8d0 | 666 | sta->status_stats.last_tdls_pkt_time = jiffies; |
f027c2ac FF |
667 | } else { |
668 | ieee80211_lost_packet(sta, info); | |
669 | } | |
670 | ||
671 | rate_control_tx_status_noskb(local, sband, sta, info); | |
672 | } | |
673 | ||
5cf16616 | 674 | if (acked || noack_success) { |
c206ca67 JB |
675 | I802_DEBUG_INC(local->dot11TransmittedFrameCount); |
676 | if (!pubsta) | |
677 | I802_DEBUG_INC(local->dot11MulticastTransmittedFrameCount); | |
678 | if (retry_count > 0) | |
679 | I802_DEBUG_INC(local->dot11RetryCount); | |
680 | if (retry_count > 1) | |
681 | I802_DEBUG_INC(local->dot11MultipleRetryCount); | |
f027c2ac | 682 | } else { |
c206ca67 | 683 | I802_DEBUG_INC(local->dot11FailedCount); |
f027c2ac FF |
684 | } |
685 | } | |
686 | EXPORT_SYMBOL(ieee80211_tx_status_noskb); | |
687 | ||
4dc792b8 HS |
688 | void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, |
689 | struct ieee80211_supported_band *sband, | |
690 | int retry_count, int shift, bool send_to_cooked) | |
7e1cdcbb FF |
691 | { |
692 | struct sk_buff *skb2; | |
4dc792b8 HS |
693 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
694 | struct ieee80211_sub_if_data *sdata; | |
695 | struct net_device *prev_dev = NULL; | |
696 | int rtap_len; | |
697 | ||
698 | /* send frame to monitor interfaces now */ | |
699 | rtap_len = ieee80211_tx_radiotap_len(info); | |
700 | if (WARN_ON_ONCE(skb_headroom(skb) < rtap_len)) { | |
701 | pr_err("ieee80211_tx_status: headroom too small\n"); | |
702 | dev_kfree_skb(skb); | |
703 | return; | |
704 | } | |
705 | ieee80211_add_tx_radiotap_header(local, sband, skb, retry_count, | |
706 | rtap_len, shift); | |
707 | ||
708 | /* XXX: is this sufficient for BPF? */ | |
d57a544d | 709 | skb_reset_mac_header(skb); |
4dc792b8 HS |
710 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
711 | skb->pkt_type = PACKET_OTHERHOST; | |
712 | skb->protocol = htons(ETH_P_802_2); | |
713 | memset(skb->cb, 0, sizeof(skb->cb)); | |
714 | ||
715 | rcu_read_lock(); | |
716 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
717 | if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { | |
718 | if (!ieee80211_sdata_running(sdata)) | |
719 | continue; | |
720 | ||
d8212184 | 721 | if ((sdata->u.mntr.flags & MONITOR_FLAG_COOK_FRAMES) && |
4dc792b8 HS |
722 | !send_to_cooked) |
723 | continue; | |
724 | ||
725 | if (prev_dev) { | |
726 | skb2 = skb_clone(skb, GFP_ATOMIC); | |
727 | if (skb2) { | |
728 | skb2->dev = prev_dev; | |
729 | netif_rx(skb2); | |
730 | } | |
731 | } | |
732 | ||
733 | prev_dev = sdata->dev; | |
734 | } | |
735 | } | |
736 | if (prev_dev) { | |
737 | skb->dev = prev_dev; | |
738 | netif_rx(skb); | |
739 | skb = NULL; | |
740 | } | |
741 | rcu_read_unlock(); | |
742 | dev_kfree_skb(skb); | |
743 | } | |
744 | ||
745 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) | |
746 | { | |
7e1cdcbb FF |
747 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
748 | struct ieee80211_local *local = hw_to_local(hw); | |
749 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
750 | __le16 fc; | |
751 | struct ieee80211_supported_band *sband; | |
83e7e4ce | 752 | struct rhlist_head *tmp; |
7bedd0cf | 753 | struct sta_info *sta; |
7e1cdcbb FF |
754 | int retry_count; |
755 | int rates_idx; | |
756 | bool send_to_cooked; | |
757 | bool acked; | |
758 | struct ieee80211_bar *bar; | |
7e1cdcbb | 759 | int shift = 0; |
5e06a9e8 | 760 | int tid = IEEE80211_NUM_TIDS; |
7e1cdcbb FF |
761 | |
762 | rates_idx = ieee80211_tx_get_rates(hw, info, &retry_count); | |
fe7a5d5c JB |
763 | |
764 | rcu_read_lock(); | |
765 | ||
766 | sband = local->hw.wiphy->bands[info->band]; | |
375177bf | 767 | fc = hdr->frame_control; |
fe7a5d5c | 768 | |
83e7e4ce | 769 | for_each_sta_info(local, hdr->addr1, sta, tmp) { |
abe60632 | 770 | /* skip wrong virtual interface */ |
b203ca39 | 771 | if (!ether_addr_equal(hdr->addr2, sta->sdata->vif.addr)) |
abe60632 | 772 | continue; |
fe7a5d5c | 773 | |
2103dec1 SW |
774 | shift = ieee80211_vif_get_shift(&sta->sdata->vif); |
775 | ||
47086fc5 | 776 | if (info->flags & IEEE80211_TX_STATUS_EOSP) |
c2c98fde | 777 | clear_sta_flag(sta, WLAN_STA_SP); |
47086fc5 | 778 | |
04ac3c0e | 779 | acked = !!(info->flags & IEEE80211_TX_STAT_ACK); |
71f2c347 MH |
780 | |
781 | /* mesh Peer Service Period support */ | |
782 | if (ieee80211_vif_is_mesh(&sta->sdata->vif) && | |
783 | ieee80211_is_data_qos(fc)) | |
784 | ieee80211_mpsp_trigger_process( | |
785 | ieee80211_get_qos_ctl(hdr), sta, true, acked); | |
786 | ||
c2c98fde | 787 | if (!acked && test_sta_flag(sta, WLAN_STA_PS_STA)) { |
fe7a5d5c JB |
788 | /* |
789 | * The STA is in power save mode, so assume | |
790 | * that this TX packet failed because of that. | |
791 | */ | |
792 | ieee80211_handle_filtered_frame(local, sta, skb); | |
793 | rcu_read_unlock(); | |
794 | return; | |
795 | } | |
796 | ||
30686bf7 | 797 | if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL) && |
00a9a6d1 | 798 | (ieee80211_is_data(hdr->frame_control)) && |
0c869808 | 799 | (rates_idx != -1)) |
e5a9f8d0 JB |
800 | sta->tx_stats.last_rate = |
801 | info->status.rates[rates_idx]; | |
0c869808 | 802 | |
fe7a5d5c JB |
803 | if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) && |
804 | (ieee80211_is_data_qos(fc))) { | |
79c892b8 | 805 | u16 ssn; |
fe7a5d5c JB |
806 | u8 *qc; |
807 | ||
808 | qc = ieee80211_get_qos_ctl(hdr); | |
809 | tid = qc[0] & 0xf; | |
810 | ssn = ((le16_to_cpu(hdr->seq_ctrl) + 0x10) | |
811 | & IEEE80211_SCTL_SEQ); | |
8c771244 | 812 | ieee80211_send_bar(&sta->sdata->vif, hdr->addr1, |
fe7a5d5c | 813 | tid, ssn); |
79c892b8 JB |
814 | } else if (ieee80211_is_data_qos(fc)) { |
815 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
816 | ||
817 | tid = qc[0] & 0xf; | |
fe7a5d5c JB |
818 | } |
819 | ||
e69deded | 820 | if (!acked && ieee80211_is_back_req(fc)) { |
79c892b8 | 821 | u16 control; |
7107676a | 822 | |
e69deded | 823 | /* |
7107676a FF |
824 | * BAR failed, store the last SSN and retry sending |
825 | * the BAR when the next unicast transmission on the | |
826 | * same TID succeeds. | |
e69deded HS |
827 | */ |
828 | bar = (struct ieee80211_bar *) skb->data; | |
7107676a FF |
829 | control = le16_to_cpu(bar->control); |
830 | if (!(control & IEEE80211_BAR_CTRL_MULTI_TID)) { | |
f0425bed FF |
831 | u16 ssn = le16_to_cpu(bar->start_seq_num); |
832 | ||
7107676a | 833 | tid = (control & |
e69deded HS |
834 | IEEE80211_BAR_CTRL_TID_INFO_MASK) >> |
835 | IEEE80211_BAR_CTRL_TID_INFO_SHIFT; | |
f0425bed | 836 | |
8df6b7b1 | 837 | ieee80211_set_bar_pending(sta, tid, ssn); |
e69deded HS |
838 | } |
839 | } | |
840 | ||
fe7a5d5c JB |
841 | if (info->flags & IEEE80211_TX_STAT_TX_FILTERED) { |
842 | ieee80211_handle_filtered_frame(local, sta, skb); | |
843 | rcu_read_unlock(); | |
844 | return; | |
845 | } else { | |
04ac3c0e | 846 | if (!acked) |
e5a9f8d0 JB |
847 | sta->status_stats.retry_failed++; |
848 | sta->status_stats.retry_count += retry_count; | |
79c892b8 JB |
849 | |
850 | if (ieee80211_is_data_present(fc)) { | |
851 | if (!acked) | |
e5a9f8d0 JB |
852 | sta->status_stats.msdu_failed[tid]++; |
853 | ||
854 | sta->status_stats.msdu_retries[tid] += | |
855 | retry_count; | |
79c892b8 | 856 | } |
fe7a5d5c JB |
857 | } |
858 | ||
859 | rate_control_tx_status(local, sband, sta, skb); | |
860 | if (ieee80211_vif_is_mesh(&sta->sdata->vif)) | |
861 | ieee80211s_update_metric(local, sta, skb); | |
0f78231b | 862 | |
04ac3c0e | 863 | if (!(info->flags & IEEE80211_TX_CTL_INJECTED) && acked) |
0f78231b | 864 | ieee80211_frame_acked(sta, skb); |
99ba2a14 | 865 | |
04ac3c0e | 866 | if ((sta->sdata->vif.type == NL80211_IFTYPE_STATION) && |
30686bf7 | 867 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) |
02219b3a JB |
868 | ieee80211_sta_tx_notify(sta->sdata, (void *) skb->data, |
869 | acked, info->status.tx_time); | |
04ac3c0e | 870 | |
30686bf7 | 871 | if (ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) { |
99ba2a14 | 872 | if (info->flags & IEEE80211_TX_STAT_ACK) { |
e5a9f8d0 JB |
873 | if (sta->status_stats.lost_packets) |
874 | sta->status_stats.lost_packets = 0; | |
9d58f25b LK |
875 | |
876 | /* Track when last TDLS packet was ACKed */ | |
877 | if (test_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH)) | |
e5a9f8d0 JB |
878 | sta->status_stats.last_tdls_pkt_time = |
879 | jiffies; | |
abd43a6a | 880 | } else { |
ad9dda63 | 881 | ieee80211_lost_packet(sta, info); |
99ba2a14 JB |
882 | } |
883 | } | |
fe7a5d5c JB |
884 | } |
885 | ||
886 | rcu_read_unlock(); | |
887 | ||
e47f2509 | 888 | ieee80211_led_tx(local); |
fe7a5d5c JB |
889 | |
890 | /* SNMP counters | |
891 | * Fragments are passed to low-level drivers as separate skbs, so these | |
892 | * are actually fragments, not frames. Update frame counters only for | |
893 | * the first fragment of the frame. */ | |
5cf16616 SM |
894 | if ((info->flags & IEEE80211_TX_STAT_ACK) || |
895 | (info->flags & IEEE80211_TX_STAT_NOACK_TRANSMITTED)) { | |
adf5ace5 | 896 | if (ieee80211_is_first_frag(hdr->seq_ctrl)) { |
c206ca67 | 897 | I802_DEBUG_INC(local->dot11TransmittedFrameCount); |
85b89af0 | 898 | if (is_multicast_ether_addr(ieee80211_get_DA(hdr))) |
c206ca67 | 899 | I802_DEBUG_INC(local->dot11MulticastTransmittedFrameCount); |
fe7a5d5c | 900 | if (retry_count > 0) |
c206ca67 | 901 | I802_DEBUG_INC(local->dot11RetryCount); |
fe7a5d5c | 902 | if (retry_count > 1) |
c206ca67 | 903 | I802_DEBUG_INC(local->dot11MultipleRetryCount); |
fe7a5d5c JB |
904 | } |
905 | ||
906 | /* This counter shall be incremented for an acknowledged MPDU | |
907 | * with an individual address in the address 1 field or an MPDU | |
908 | * with a multicast address in the address 1 field of type Data | |
909 | * or Management. */ | |
910 | if (!is_multicast_ether_addr(hdr->addr1) || | |
adf5ace5 HS |
911 | ieee80211_is_data(fc) || |
912 | ieee80211_is_mgmt(fc)) | |
c206ca67 | 913 | I802_DEBUG_INC(local->dot11TransmittedFragmentCount); |
fe7a5d5c | 914 | } else { |
adf5ace5 | 915 | if (ieee80211_is_first_frag(hdr->seq_ctrl)) |
c206ca67 | 916 | I802_DEBUG_INC(local->dot11FailedCount); |
fe7a5d5c JB |
917 | } |
918 | ||
375177bf | 919 | if (ieee80211_is_nullfunc(fc) && ieee80211_has_pm(fc) && |
30686bf7 | 920 | ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS) && |
375177bf VN |
921 | !(info->flags & IEEE80211_TX_CTL_INJECTED) && |
922 | local->ps_sdata && !(local->scanning)) { | |
923 | if (info->flags & IEEE80211_TX_STAT_ACK) { | |
924 | local->ps_sdata->u.mgd.flags |= | |
925 | IEEE80211_STA_NULLFUNC_ACKED; | |
375177bf VN |
926 | } else |
927 | mod_timer(&local->dynamic_ps_timer, jiffies + | |
928 | msecs_to_jiffies(10)); | |
929 | } | |
930 | ||
8a2fbedc | 931 | ieee80211_report_used_skb(local, skb, false); |
a729cff8 | 932 | |
fe7a5d5c JB |
933 | /* this was a transmitted frame, but now we want to reuse it */ |
934 | skb_orphan(skb); | |
935 | ||
eaf55530 FF |
936 | /* Need to make a copy before skb->cb gets cleared */ |
937 | send_to_cooked = !!(info->flags & IEEE80211_TX_CTL_INJECTED) || | |
adf5ace5 | 938 | !(ieee80211_is_data(fc)); |
eaf55530 | 939 | |
fe7a5d5c JB |
940 | /* |
941 | * This is a bit racy but we can avoid a lot of work | |
942 | * with this test... | |
943 | */ | |
eaf55530 | 944 | if (!local->monitors && (!send_to_cooked || !local->cooked_mntrs)) { |
fe7a5d5c JB |
945 | dev_kfree_skb(skb); |
946 | return; | |
947 | } | |
948 | ||
4dc792b8 HS |
949 | /* send to monitor interfaces */ |
950 | ieee80211_tx_monitor(local, skb, sband, retry_count, shift, send_to_cooked); | |
fe7a5d5c JB |
951 | } |
952 | EXPORT_SYMBOL(ieee80211_tx_status); | |
8178d38b AN |
953 | |
954 | void ieee80211_report_low_ack(struct ieee80211_sta *pubsta, u32 num_packets) | |
955 | { | |
956 | struct sta_info *sta = container_of(pubsta, struct sta_info, sta); | |
957 | cfg80211_cqm_pktloss_notify(sta->sdata->dev, sta->sta.addr, | |
958 | num_packets, GFP_ATOMIC); | |
959 | } | |
960 | EXPORT_SYMBOL(ieee80211_report_low_ack); | |
6096de7f JB |
961 | |
962 | void ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb) | |
963 | { | |
a729cff8 | 964 | struct ieee80211_local *local = hw_to_local(hw); |
a729cff8 | 965 | |
8a2fbedc | 966 | ieee80211_report_used_skb(local, skb, true); |
6096de7f JB |
967 | dev_kfree_skb_any(skb); |
968 | } | |
969 | EXPORT_SYMBOL(ieee80211_free_txskb); | |
1f98ab7f FF |
970 | |
971 | void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, | |
972 | struct sk_buff_head *skbs) | |
973 | { | |
974 | struct sk_buff *skb; | |
975 | ||
976 | while ((skb = __skb_dequeue(skbs))) | |
977 | ieee80211_free_txskb(hw, skb); | |
978 | } |