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Commit | Line | Data |
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b8695a8f JB |
1 | /* |
2 | * HT handling | |
3 | * | |
4 | * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi> | |
5 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
6 | * Copyright 2005-2006, Devicescape Software, Inc. | |
7 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
8 | * Copyright 2007, Michael Wu <flamingice@sourmilk.net> | |
a93e3644 | 9 | * Copyright 2007-2010, Intel Corporation |
04c2cf34 | 10 | * Copyright(c) 2015-2017 Intel Deutschland GmbH |
c20096e7 | 11 | * Copyright (C) 2018 Intel Corporation |
b8695a8f JB |
12 | * |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License version 2 as | |
15 | * published by the Free Software Foundation. | |
16 | */ | |
17 | ||
73a72a81 JB |
18 | /** |
19 | * DOC: RX A-MPDU aggregation | |
20 | * | |
21 | * Aggregation on the RX side requires only implementing the | |
22 | * @ampdu_action callback that is invoked to start/stop any | |
23 | * block-ack sessions for RX aggregation. | |
24 | * | |
25 | * When RX aggregation is started by the peer, the driver is | |
26 | * notified via @ampdu_action function, with the | |
27 | * %IEEE80211_AMPDU_RX_START action, and may reject the request | |
28 | * in which case a negative response is sent to the peer, if it | |
29 | * accepts it a positive response is sent. | |
30 | * | |
31 | * While the session is active, the device/driver are required | |
32 | * to de-aggregate frames and pass them up one by one to mac80211, | |
33 | * which will handle the reorder buffer. | |
34 | * | |
35 | * When the aggregation session is stopped again by the peer or | |
36 | * ourselves, the driver's @ampdu_action function will be called | |
37 | * with the action %IEEE80211_AMPDU_RX_STOP. In this case, the | |
38 | * call must not fail. | |
39 | */ | |
40 | ||
b8695a8f | 41 | #include <linux/ieee80211.h> |
5a0e3ad6 | 42 | #include <linux/slab.h> |
bc3b2d7f | 43 | #include <linux/export.h> |
b8695a8f JB |
44 | #include <net/mac80211.h> |
45 | #include "ieee80211_i.h" | |
24487981 | 46 | #include "driver-ops.h" |
b8695a8f | 47 | |
a87f736d JB |
48 | static void ieee80211_free_tid_rx(struct rcu_head *h) |
49 | { | |
50 | struct tid_ampdu_rx *tid_rx = | |
51 | container_of(h, struct tid_ampdu_rx, rcu_head); | |
52 | int i; | |
53 | ||
54 | for (i = 0; i < tid_rx->buf_size; i++) | |
83eb935e | 55 | __skb_queue_purge(&tid_rx->reorder_buf[i]); |
a87f736d JB |
56 | kfree(tid_rx->reorder_buf); |
57 | kfree(tid_rx->reorder_time); | |
58 | kfree(tid_rx); | |
59 | } | |
60 | ||
7c3b1dd8 | 61 | void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, |
53f73c09 | 62 | u16 initiator, u16 reason, bool tx) |
b8695a8f | 63 | { |
d75636ef | 64 | struct ieee80211_local *local = sta->local; |
098a6070 | 65 | struct tid_ampdu_rx *tid_rx; |
50ea05ef SS |
66 | struct ieee80211_ampdu_params params = { |
67 | .sta = &sta->sta, | |
68 | .action = IEEE80211_AMPDU_RX_STOP, | |
69 | .tid = tid, | |
70 | .amsdu = false, | |
71 | .timeout = 0, | |
72 | .ssn = 0, | |
73 | }; | |
b8695a8f | 74 | |
a93e3644 | 75 | lockdep_assert_held(&sta->ampdu_mlme.mtx); |
098a6070 | 76 | |
40b275b6 JB |
77 | tid_rx = rcu_dereference_protected(sta->ampdu_mlme.tid_rx[tid], |
78 | lockdep_is_held(&sta->ampdu_mlme.mtx)); | |
a87f736d | 79 | |
412a6d80 | 80 | if (!test_bit(tid, sta->ampdu_mlme.agg_session_valid)) |
b8695a8f | 81 | return; |
d75636ef | 82 | |
a9b3cd7f | 83 | RCU_INIT_POINTER(sta->ampdu_mlme.tid_rx[tid], NULL); |
412a6d80 | 84 | __clear_bit(tid, sta->ampdu_mlme.agg_session_valid); |
b8695a8f | 85 | |
bdcbd8e0 JB |
86 | ht_dbg(sta->sdata, |
87 | "Rx BA session stop requested for %pM tid %u %s reason: %d\n", | |
88 | sta->sta.addr, tid, | |
09e0a2fe | 89 | initiator == WLAN_BACK_RECIPIENT ? "recipient" : "initiator", |
bdcbd8e0 | 90 | (int)reason); |
b8695a8f | 91 | |
50ea05ef | 92 | if (drv_ampdu_action(local, sta->sdata, ¶ms)) |
bdcbd8e0 | 93 | sdata_info(sta->sdata, |
0a214d3f JB |
94 | "HW problem - can not stop rx aggregation for %pM tid %d\n", |
95 | sta->sta.addr, tid); | |
b8695a8f | 96 | |
b8695a8f | 97 | /* check if this is a self generated aggregation halt */ |
53f73c09 | 98 | if (initiator == WLAN_BACK_RECIPIENT && tx) |
d75636ef | 99 | ieee80211_send_delba(sta->sdata, sta->sta.addr, |
a7f39f60 | 100 | tid, WLAN_BACK_RECIPIENT, reason); |
b8695a8f | 101 | |
412a6d80 SS |
102 | /* |
103 | * return here in case tid_rx is not assigned - which will happen if | |
104 | * IEEE80211_HW_SUPPORTS_REORDERING_BUFFER is set. | |
105 | */ | |
106 | if (!tid_rx) | |
107 | return; | |
108 | ||
7c3b1dd8 | 109 | del_timer_sync(&tid_rx->session_timer); |
a87f736d | 110 | |
788211d8 JB |
111 | /* make sure ieee80211_sta_reorder_release() doesn't re-arm the timer */ |
112 | spin_lock_bh(&tid_rx->reorder_lock); | |
113 | tid_rx->removed = true; | |
114 | spin_unlock_bh(&tid_rx->reorder_lock); | |
115 | del_timer_sync(&tid_rx->reorder_timer); | |
116 | ||
a87f736d | 117 | call_rcu(&tid_rx->rcu_head, ieee80211_free_tid_rx); |
b8695a8f JB |
118 | } |
119 | ||
2aab4c27 | 120 | void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, |
53f73c09 | 121 | u16 initiator, u16 reason, bool tx) |
2aab4c27 | 122 | { |
a93e3644 | 123 | mutex_lock(&sta->ampdu_mlme.mtx); |
53f73c09 | 124 | ___ieee80211_stop_rx_ba_session(sta, tid, initiator, reason, tx); |
a93e3644 | 125 | mutex_unlock(&sta->ampdu_mlme.mtx); |
2aab4c27 JB |
126 | } |
127 | ||
f41ccd71 SL |
128 | void ieee80211_stop_rx_ba_session(struct ieee80211_vif *vif, u16 ba_rx_bitmap, |
129 | const u8 *addr) | |
130 | { | |
131 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
0a557ed3 | 132 | struct sta_info *sta; |
f41ccd71 SL |
133 | int i; |
134 | ||
0a557ed3 | 135 | rcu_read_lock(); |
bc192f89 | 136 | sta = sta_info_get_bss(sdata, addr); |
0a557ed3 EP |
137 | if (!sta) { |
138 | rcu_read_unlock(); | |
139 | return; | |
140 | } | |
141 | ||
5a306f58 | 142 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
f41ccd71 SL |
143 | if (ba_rx_bitmap & BIT(i)) |
144 | set_bit(i, sta->ampdu_mlme.tid_rx_stop_requested); | |
145 | ||
146 | ieee80211_queue_work(&sta->local->hw, &sta->ampdu_mlme.work); | |
0a557ed3 | 147 | rcu_read_unlock(); |
f41ccd71 SL |
148 | } |
149 | EXPORT_SYMBOL(ieee80211_stop_rx_ba_session); | |
150 | ||
b8695a8f JB |
151 | /* |
152 | * After accepting the AddBA Request we activated a timer, | |
153 | * resetting it after each frame that arrives from the originator. | |
b8695a8f | 154 | */ |
7cca2acd | 155 | static void sta_rx_agg_session_timer_expired(struct timer_list *t) |
b8695a8f | 156 | { |
7cca2acd KC |
157 | struct tid_ampdu_rx *tid_rx_timer = |
158 | from_timer(tid_rx_timer, t, session_timer); | |
159 | struct sta_info *sta = tid_rx_timer->sta; | |
160 | u8 tid = tid_rx_timer->tid; | |
12d3952f FF |
161 | struct tid_ampdu_rx *tid_rx; |
162 | unsigned long timeout; | |
163 | ||
d8c7aae6 | 164 | rcu_read_lock(); |
7cca2acd | 165 | tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[tid]); |
d8c7aae6 FF |
166 | if (!tid_rx) { |
167 | rcu_read_unlock(); | |
12d3952f | 168 | return; |
d8c7aae6 | 169 | } |
12d3952f FF |
170 | |
171 | timeout = tid_rx->last_rx + TU_TO_JIFFIES(tid_rx->timeout); | |
172 | if (time_is_after_jiffies(timeout)) { | |
173 | mod_timer(&tid_rx->session_timer, timeout); | |
d8c7aae6 | 174 | rcu_read_unlock(); |
12d3952f FF |
175 | return; |
176 | } | |
d8c7aae6 | 177 | rcu_read_unlock(); |
b8695a8f | 178 | |
0a214d3f | 179 | ht_dbg(sta->sdata, "RX session timer expired on %pM tid %d\n", |
7cca2acd | 180 | sta->sta.addr, tid); |
d63e9ae3 | 181 | |
7cca2acd | 182 | set_bit(tid, sta->ampdu_mlme.tid_rx_timer_expired); |
7c3b1dd8 | 183 | ieee80211_queue_work(&sta->local->hw, &sta->ampdu_mlme.work); |
b8695a8f JB |
184 | } |
185 | ||
7cca2acd | 186 | static void sta_rx_agg_reorder_timer_expired(struct timer_list *t) |
2bff8ebf | 187 | { |
7cca2acd | 188 | struct tid_ampdu_rx *tid_rx = from_timer(tid_rx, t, reorder_timer); |
2bff8ebf CL |
189 | |
190 | rcu_read_lock(); | |
7cca2acd | 191 | ieee80211_release_reorder_timeout(tid_rx->sta, tid_rx->tid); |
2bff8ebf CL |
192 | rcu_read_unlock(); |
193 | } | |
194 | ||
b8695a8f JB |
195 | static void ieee80211_send_addba_resp(struct ieee80211_sub_if_data *sdata, u8 *da, u16 tid, |
196 | u8 dialog_token, u16 status, u16 policy, | |
197 | u16 buf_size, u16 timeout) | |
198 | { | |
b8695a8f JB |
199 | struct ieee80211_local *local = sdata->local; |
200 | struct sk_buff *skb; | |
201 | struct ieee80211_mgmt *mgmt; | |
99e7ca44 | 202 | bool amsdu = ieee80211_hw_check(&local->hw, SUPPORTS_AMSDU_IN_AMPDU); |
b8695a8f JB |
203 | u16 capab; |
204 | ||
205 | skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom); | |
d15b8459 | 206 | if (!skb) |
b8695a8f | 207 | return; |
b8695a8f JB |
208 | |
209 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
b080db58 | 210 | mgmt = skb_put_zero(skb, 24); |
b8695a8f | 211 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 212 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
8abd3f9b | 213 | if (sdata->vif.type == NL80211_IFTYPE_AP || |
ae2772b3 TP |
214 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN || |
215 | sdata->vif.type == NL80211_IFTYPE_MESH_POINT) | |
47846c9b | 216 | memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); |
46900298 JB |
217 | else if (sdata->vif.type == NL80211_IFTYPE_STATION) |
218 | memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN); | |
13c40c54 AS |
219 | else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) |
220 | memcpy(mgmt->bssid, sdata->u.ibss.bssid, ETH_ALEN); | |
46900298 | 221 | |
b8695a8f JB |
222 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
223 | IEEE80211_STYPE_ACTION); | |
224 | ||
225 | skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_resp)); | |
226 | mgmt->u.action.category = WLAN_CATEGORY_BACK; | |
227 | mgmt->u.action.u.addba_resp.action_code = WLAN_ACTION_ADDBA_RESP; | |
228 | mgmt->u.action.u.addba_resp.dialog_token = dialog_token; | |
229 | ||
99e7ca44 EG |
230 | capab = (u16)(amsdu << 0); /* bit 0 A-MSDU support */ |
231 | capab |= (u16)(policy << 1); /* bit 1 aggregation policy */ | |
b8695a8f JB |
232 | capab |= (u16)(tid << 2); /* bit 5:2 TID number */ |
233 | capab |= (u16)(buf_size << 6); /* bit 15:6 max size of aggregation */ | |
234 | ||
235 | mgmt->u.action.u.addba_resp.capab = cpu_to_le16(capab); | |
236 | mgmt->u.action.u.addba_resp.timeout = cpu_to_le16(timeout); | |
237 | mgmt->u.action.u.addba_resp.status = cpu_to_le16(status); | |
238 | ||
62ae67be | 239 | ieee80211_tx_skb(sdata, skb); |
b8695a8f JB |
240 | } |
241 | ||
bde59c47 JB |
242 | void ___ieee80211_start_rx_ba_session(struct sta_info *sta, |
243 | u8 dialog_token, u16 timeout, | |
244 | u16 start_seq_num, u16 ba_policy, u16 tid, | |
245 | u16 buf_size, bool tx, bool auto_seq) | |
b8695a8f | 246 | { |
08cf42e8 | 247 | struct ieee80211_local *local = sta->sdata->local; |
b8695a8f | 248 | struct tid_ampdu_rx *tid_agg_rx; |
50ea05ef SS |
249 | struct ieee80211_ampdu_params params = { |
250 | .sta = &sta->sta, | |
251 | .action = IEEE80211_AMPDU_RX_START, | |
252 | .tid = tid, | |
253 | .amsdu = false, | |
254 | .timeout = timeout, | |
255 | .ssn = start_seq_num, | |
256 | }; | |
83eb935e | 257 | int i, ret = -EOPNOTSUPP; |
08cf42e8 | 258 | u16 status = WLAN_STATUS_REQUEST_DECLINED; |
b8695a8f | 259 | |
85d5313e JB |
260 | if (tid >= IEEE80211_FIRST_TSPEC_TSID) { |
261 | ht_dbg(sta->sdata, | |
262 | "STA %pM requests BA session on unsupported tid %d\n", | |
263 | sta->sta.addr, tid); | |
bde59c47 | 264 | goto end; |
85d5313e JB |
265 | } |
266 | ||
8f9c77fc JB |
267 | if (!sta->sta.ht_cap.ht_supported) { |
268 | ht_dbg(sta->sdata, | |
269 | "STA %pM erroneously requests BA session on tid %d w/o QoS\n", | |
270 | sta->sta.addr, tid); | |
271 | /* send a response anyway, it's an error case if we get here */ | |
bde59c47 | 272 | goto end; |
8f9c77fc JB |
273 | } |
274 | ||
c2c98fde | 275 | if (test_sta_flag(sta, WLAN_STA_BLOCK_BA)) { |
0a214d3f JB |
276 | ht_dbg(sta->sdata, |
277 | "Suspend in progress - Denying ADDBA request (%pM tid %d)\n", | |
278 | sta->sta.addr, tid); | |
bde59c47 | 279 | goto end; |
722f069a S |
280 | } |
281 | ||
b8695a8f JB |
282 | /* sanity check for incoming parameters: |
283 | * check if configuration can support the BA policy | |
284 | * and if buffer size does not exceeds max value */ | |
285 | /* XXX: check own ht delayed BA capability?? */ | |
f64f9e71 JP |
286 | if (((ba_policy != 1) && |
287 | (!(sta->sta.ht_cap.cap & IEEE80211_HT_CAP_DELAY_BA))) || | |
288 | (buf_size > IEEE80211_MAX_AMPDU_BUF)) { | |
b8695a8f | 289 | status = WLAN_STATUS_INVALID_QOS_PARAM; |
bdcbd8e0 JB |
290 | ht_dbg_ratelimited(sta->sdata, |
291 | "AddBA Req with bad params from %pM on tid %u. policy %d, buffer size %d\n", | |
08cf42e8 | 292 | sta->sta.addr, tid, ba_policy, buf_size); |
bde59c47 | 293 | goto end; |
b8695a8f JB |
294 | } |
295 | /* determine default buffer size */ | |
82694f76 LC |
296 | if (buf_size == 0) |
297 | buf_size = IEEE80211_MAX_AMPDU_BUF; | |
b8695a8f | 298 | |
df6ba5d8 | 299 | /* make sure the size doesn't exceed the maximum supported by the hw */ |
480dd46b MA |
300 | if (buf_size > sta->sta.max_rx_aggregation_subframes) |
301 | buf_size = sta->sta.max_rx_aggregation_subframes; | |
50ea05ef | 302 | params.buf_size = buf_size; |
b8695a8f | 303 | |
480dd46b MA |
304 | ht_dbg(sta->sdata, "AddBA Req buf_size=%d for %pM\n", |
305 | buf_size, sta->sta.addr); | |
306 | ||
b8695a8f | 307 | /* examine state machine */ |
bde59c47 | 308 | lockdep_assert_held(&sta->ampdu_mlme.mtx); |
b8695a8f | 309 | |
412a6d80 | 310 | if (test_bit(tid, sta->ampdu_mlme.agg_session_valid)) { |
1c3d185a | 311 | if (sta->ampdu_mlme.tid_rx_token[tid] == dialog_token) { |
f89e07d4 JB |
312 | ht_dbg_ratelimited(sta->sdata, |
313 | "updated AddBA Req from %pM on tid %u\n", | |
314 | sta->sta.addr, tid); | |
315 | /* We have no API to update the timeout value in the | |
316 | * driver so reject the timeout update. | |
317 | */ | |
318 | status = WLAN_STATUS_REQUEST_DECLINED; | |
f89e07d4 JB |
319 | goto end; |
320 | } | |
321 | ||
bdcbd8e0 JB |
322 | ht_dbg_ratelimited(sta->sdata, |
323 | "unexpected AddBA Req from %pM on tid %u\n", | |
08cf42e8 | 324 | sta->sta.addr, tid); |
15b4d843 AN |
325 | |
326 | /* delete existing Rx BA session on the same tid */ | |
327 | ___ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT, | |
328 | WLAN_STATUS_UNSPECIFIED_QOS, | |
329 | false); | |
b8695a8f JB |
330 | } |
331 | ||
412a6d80 SS |
332 | if (ieee80211_hw_check(&local->hw, SUPPORTS_REORDERING_BUFFER)) { |
333 | ret = drv_ampdu_action(local, sta->sdata, ¶ms); | |
334 | ht_dbg(sta->sdata, | |
335 | "Rx A-MPDU request on %pM tid %d result %d\n", | |
336 | sta->sta.addr, tid, ret); | |
337 | if (!ret) | |
338 | status = WLAN_STATUS_SUCCESS; | |
339 | goto end; | |
340 | } | |
341 | ||
b8695a8f | 342 | /* prepare A-MPDU MLME for Rx aggregation */ |
f39ea269 | 343 | tid_agg_rx = kzalloc(sizeof(*tid_agg_rx), GFP_KERNEL); |
d15b8459 | 344 | if (!tid_agg_rx) |
b8695a8f | 345 | goto end; |
b8695a8f | 346 | |
2bff8ebf CL |
347 | spin_lock_init(&tid_agg_rx->reorder_lock); |
348 | ||
a87f736d | 349 | /* rx timer */ |
7cca2acd KC |
350 | timer_setup(&tid_agg_rx->session_timer, |
351 | sta_rx_agg_session_timer_expired, TIMER_DEFERRABLE); | |
b8695a8f | 352 | |
2bff8ebf | 353 | /* rx reorder timer */ |
7cca2acd KC |
354 | timer_setup(&tid_agg_rx->reorder_timer, |
355 | sta_rx_agg_reorder_timer_expired, 0); | |
2bff8ebf | 356 | |
b8695a8f JB |
357 | /* prepare reordering buffer */ |
358 | tid_agg_rx->reorder_buf = | |
83eb935e | 359 | kcalloc(buf_size, sizeof(struct sk_buff_head), GFP_KERNEL); |
4d050f1d | 360 | tid_agg_rx->reorder_time = |
dd318575 | 361 | kcalloc(buf_size, sizeof(unsigned long), GFP_KERNEL); |
4d050f1d | 362 | if (!tid_agg_rx->reorder_buf || !tid_agg_rx->reorder_time) { |
4d050f1d JM |
363 | kfree(tid_agg_rx->reorder_buf); |
364 | kfree(tid_agg_rx->reorder_time); | |
a87f736d | 365 | kfree(tid_agg_rx); |
b8695a8f JB |
366 | goto end; |
367 | } | |
368 | ||
83eb935e MK |
369 | for (i = 0; i < buf_size; i++) |
370 | __skb_queue_head_init(&tid_agg_rx->reorder_buf[i]); | |
371 | ||
50ea05ef | 372 | ret = drv_ampdu_action(local, sta->sdata, ¶ms); |
0a214d3f JB |
373 | ht_dbg(sta->sdata, "Rx A-MPDU request on %pM tid %d result %d\n", |
374 | sta->sta.addr, tid, ret); | |
b8695a8f JB |
375 | if (ret) { |
376 | kfree(tid_agg_rx->reorder_buf); | |
a87f736d | 377 | kfree(tid_agg_rx->reorder_time); |
b8695a8f | 378 | kfree(tid_agg_rx); |
b8695a8f JB |
379 | goto end; |
380 | } | |
381 | ||
a87f736d | 382 | /* update data */ |
b8695a8f JB |
383 | tid_agg_rx->ssn = start_seq_num; |
384 | tid_agg_rx->head_seq_num = start_seq_num; | |
385 | tid_agg_rx->buf_size = buf_size; | |
386 | tid_agg_rx->timeout = timeout; | |
387 | tid_agg_rx->stored_mpdu_num = 0; | |
4549cf2b | 388 | tid_agg_rx->auto_seq = auto_seq; |
b7540d8f | 389 | tid_agg_rx->started = false; |
06470f74 | 390 | tid_agg_rx->reorder_buf_filtered = 0; |
7cca2acd KC |
391 | tid_agg_rx->tid = tid; |
392 | tid_agg_rx->sta = sta; | |
b8695a8f | 393 | status = WLAN_STATUS_SUCCESS; |
a87f736d JB |
394 | |
395 | /* activate it for RX */ | |
cf778b00 | 396 | rcu_assign_pointer(sta->ampdu_mlme.tid_rx[tid], tid_agg_rx); |
f955ebb4 | 397 | |
12d3952f | 398 | if (timeout) { |
f955ebb4 | 399 | mod_timer(&tid_agg_rx->session_timer, TU_TO_EXP_TIME(timeout)); |
12d3952f FF |
400 | tid_agg_rx->last_rx = jiffies; |
401 | } | |
f955ebb4 | 402 | |
b8695a8f | 403 | end: |
bfe40fa3 | 404 | if (status == WLAN_STATUS_SUCCESS) { |
412a6d80 | 405 | __set_bit(tid, sta->ampdu_mlme.agg_session_valid); |
bfe40fa3 | 406 | __clear_bit(tid, sta->ampdu_mlme.unexpected_agg); |
1c3d185a | 407 | sta->ampdu_mlme.tid_rx_token[tid] = dialog_token; |
bfe40fa3 | 408 | } |
b8695a8f | 409 | |
08cf42e8 MK |
410 | if (tx) |
411 | ieee80211_send_addba_resp(sta->sdata, sta->sta.addr, tid, | |
412 | dialog_token, status, 1, buf_size, | |
413 | timeout); | |
414 | } | |
415 | ||
bde59c47 JB |
416 | void __ieee80211_start_rx_ba_session(struct sta_info *sta, |
417 | u8 dialog_token, u16 timeout, | |
418 | u16 start_seq_num, u16 ba_policy, u16 tid, | |
419 | u16 buf_size, bool tx, bool auto_seq) | |
420 | { | |
421 | mutex_lock(&sta->ampdu_mlme.mtx); | |
422 | ___ieee80211_start_rx_ba_session(sta, dialog_token, timeout, | |
423 | start_seq_num, ba_policy, tid, | |
424 | buf_size, tx, auto_seq); | |
425 | mutex_unlock(&sta->ampdu_mlme.mtx); | |
426 | } | |
427 | ||
08cf42e8 MK |
428 | void ieee80211_process_addba_request(struct ieee80211_local *local, |
429 | struct sta_info *sta, | |
430 | struct ieee80211_mgmt *mgmt, | |
431 | size_t len) | |
432 | { | |
433 | u16 capab, tid, timeout, ba_policy, buf_size, start_seq_num; | |
434 | u8 dialog_token; | |
435 | ||
436 | /* extract session parameters from addba request frame */ | |
437 | dialog_token = mgmt->u.action.u.addba_req.dialog_token; | |
438 | timeout = le16_to_cpu(mgmt->u.action.u.addba_req.timeout); | |
439 | start_seq_num = | |
440 | le16_to_cpu(mgmt->u.action.u.addba_req.start_seq_num) >> 4; | |
441 | ||
442 | capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab); | |
443 | ba_policy = (capab & IEEE80211_ADDBA_PARAM_POLICY_MASK) >> 1; | |
444 | tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; | |
445 | buf_size = (capab & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) >> 6; | |
446 | ||
447 | __ieee80211_start_rx_ba_session(sta, dialog_token, timeout, | |
448 | start_seq_num, ba_policy, tid, | |
4549cf2b | 449 | buf_size, true, false); |
08cf42e8 MK |
450 | } |
451 | ||
699cb58c | 452 | void ieee80211_manage_rx_ba_offl(struct ieee80211_vif *vif, |
1272c5d8 | 453 | const u8 *addr, unsigned int tid) |
08cf42e8 MK |
454 | { |
455 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
456 | struct ieee80211_local *local = sdata->local; | |
699cb58c | 457 | struct sta_info *sta; |
08cf42e8 | 458 | |
699cb58c JB |
459 | rcu_read_lock(); |
460 | sta = sta_info_get_bss(sdata, addr); | |
461 | if (!sta) | |
462 | goto unlock; | |
08cf42e8 | 463 | |
1272c5d8 | 464 | set_bit(tid, sta->ampdu_mlme.tid_rx_manage_offl); |
699cb58c JB |
465 | ieee80211_queue_work(&local->hw, &sta->ampdu_mlme.work); |
466 | unlock: | |
467 | rcu_read_unlock(); | |
b8695a8f | 468 | } |
699cb58c | 469 | EXPORT_SYMBOL(ieee80211_manage_rx_ba_offl); |
04c2cf34 NG |
470 | |
471 | void ieee80211_rx_ba_timer_expired(struct ieee80211_vif *vif, | |
472 | const u8 *addr, unsigned int tid) | |
473 | { | |
474 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
475 | struct ieee80211_local *local = sdata->local; | |
476 | struct sta_info *sta; | |
477 | ||
478 | rcu_read_lock(); | |
479 | sta = sta_info_get_bss(sdata, addr); | |
480 | if (!sta) | |
481 | goto unlock; | |
482 | ||
483 | set_bit(tid, sta->ampdu_mlme.tid_rx_timer_expired); | |
484 | ieee80211_queue_work(&local->hw, &sta->ampdu_mlme.work); | |
485 | ||
486 | unlock: | |
487 | rcu_read_unlock(); | |
488 | } | |
489 | EXPORT_SYMBOL(ieee80211_rx_ba_timer_expired); |