Commit | Line | Data |
---|---|---|
d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
44d414db JB |
2 | /* |
3 | * HT handling | |
4 | * | |
5 | * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi> | |
bacac545 JB |
6 | * Copyright 2002-2005, Instant802 Networks, Inc. |
7 | * Copyright 2005-2006, Devicescape Software, Inc. | |
44d414db JB |
8 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> |
9 | * Copyright 2007, Michael Wu <flamingice@sourmilk.net> | |
cfcdbde3 | 10 | * Copyright 2007-2010, Intel Corporation |
7a7c0a64 | 11 | * Copyright 2017 Intel Deutschland GmbH |
44d414db JB |
12 | */ |
13 | ||
14 | #include <linux/ieee80211.h> | |
bc3b2d7f | 15 | #include <linux/export.h> |
44d414db JB |
16 | #include <net/mac80211.h> |
17 | #include "ieee80211_i.h" | |
81cb7623 | 18 | #include "rate.h" |
44d414db | 19 | |
822854b0 SW |
20 | static void __check_htcap_disable(struct ieee80211_ht_cap *ht_capa, |
21 | struct ieee80211_ht_cap *ht_capa_mask, | |
32dfefac BG |
22 | struct ieee80211_sta_ht_cap *ht_cap, |
23 | u16 flag) | |
ef96a842 BG |
24 | { |
25 | __le16 le_flag = cpu_to_le16(flag); | |
822854b0 SW |
26 | if (ht_capa_mask->cap_info & le_flag) { |
27 | if (!(ht_capa->cap_info & le_flag)) | |
ef96a842 BG |
28 | ht_cap->cap &= ~flag; |
29 | } | |
30 | } | |
31 | ||
9a07bf50 JM |
32 | static void __check_htcap_enable(struct ieee80211_ht_cap *ht_capa, |
33 | struct ieee80211_ht_cap *ht_capa_mask, | |
34 | struct ieee80211_sta_ht_cap *ht_cap, | |
35 | u16 flag) | |
36 | { | |
37 | __le16 le_flag = cpu_to_le16(flag); | |
38 | ||
39 | if ((ht_capa_mask->cap_info & le_flag) && | |
40 | (ht_capa->cap_info & le_flag)) | |
41 | ht_cap->cap |= flag; | |
42 | } | |
43 | ||
ef96a842 BG |
44 | void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, |
45 | struct ieee80211_sta_ht_cap *ht_cap) | |
46 | { | |
822854b0 SW |
47 | struct ieee80211_ht_cap *ht_capa, *ht_capa_mask; |
48 | u8 *scaps, *smask; | |
ef96a842 BG |
49 | int i; |
50 | ||
e1a0c6b3 JB |
51 | if (!ht_cap->ht_supported) |
52 | return; | |
53 | ||
822854b0 SW |
54 | switch (sdata->vif.type) { |
55 | case NL80211_IFTYPE_STATION: | |
56 | ht_capa = &sdata->u.mgd.ht_capa; | |
57 | ht_capa_mask = &sdata->u.mgd.ht_capa_mask; | |
58 | break; | |
59 | case NL80211_IFTYPE_ADHOC: | |
60 | ht_capa = &sdata->u.ibss.ht_capa; | |
61 | ht_capa_mask = &sdata->u.ibss.ht_capa_mask; | |
62 | break; | |
63 | default: | |
64 | WARN_ON_ONCE(1); | |
65 | return; | |
66 | } | |
67 | ||
68 | scaps = (u8 *)(&ht_capa->mcs.rx_mask); | |
69 | smask = (u8 *)(&ht_capa_mask->mcs.rx_mask); | |
70 | ||
ef96a842 | 71 | /* NOTE: If you add more over-rides here, update register_hw |
9a07bf50 | 72 | * ht_capa_mod_mask logic in main.c as well. |
ef96a842 BG |
73 | * And, if this method can ever change ht_cap.ht_supported, fix |
74 | * the check in ieee80211_add_ht_ie. | |
75 | */ | |
76 | ||
77 | /* check for HT over-rides, MCS rates first. */ | |
78 | for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) { | |
79 | u8 m = smask[i]; | |
80 | ht_cap->mcs.rx_mask[i] &= ~m; /* turn off all masked bits */ | |
81 | /* Add back rates that are supported */ | |
82 | ht_cap->mcs.rx_mask[i] |= (m & scaps[i]); | |
83 | } | |
84 | ||
85 | /* Force removal of HT-40 capabilities? */ | |
822854b0 SW |
86 | __check_htcap_disable(ht_capa, ht_capa_mask, ht_cap, |
87 | IEEE80211_HT_CAP_SUP_WIDTH_20_40); | |
88 | __check_htcap_disable(ht_capa, ht_capa_mask, ht_cap, | |
89 | IEEE80211_HT_CAP_SGI_40); | |
ef96a842 | 90 | |
bc0784d9 | 91 | /* Allow user to disable SGI-20 (SGI-40 is handled above) */ |
822854b0 SW |
92 | __check_htcap_disable(ht_capa, ht_capa_mask, ht_cap, |
93 | IEEE80211_HT_CAP_SGI_20); | |
bc0784d9 | 94 | |
ef96a842 | 95 | /* Allow user to disable the max-AMSDU bit. */ |
822854b0 SW |
96 | __check_htcap_disable(ht_capa, ht_capa_mask, ht_cap, |
97 | IEEE80211_HT_CAP_MAX_AMSDU); | |
ef96a842 | 98 | |
a2e7495d PK |
99 | /* Allow user to disable LDPC */ |
100 | __check_htcap_disable(ht_capa, ht_capa_mask, ht_cap, | |
101 | IEEE80211_HT_CAP_LDPC_CODING); | |
102 | ||
9a07bf50 JM |
103 | /* Allow user to enable 40 MHz intolerant bit. */ |
104 | __check_htcap_enable(ht_capa, ht_capa_mask, ht_cap, | |
105 | IEEE80211_HT_CAP_40MHZ_INTOLERANT); | |
106 | ||
d9bb4108 SM |
107 | /* Allow user to enable TX STBC bit */ |
108 | __check_htcap_enable(ht_capa, ht_capa_mask, ht_cap, | |
109 | IEEE80211_HT_CAP_TX_STBC); | |
110 | ||
111 | /* Allow user to configure RX STBC bits */ | |
e9f33a8f JB |
112 | if (ht_capa_mask->cap_info & cpu_to_le16(IEEE80211_HT_CAP_RX_STBC)) |
113 | ht_cap->cap |= le16_to_cpu(ht_capa->cap_info) & | |
114 | IEEE80211_HT_CAP_RX_STBC; | |
d9bb4108 | 115 | |
ef96a842 | 116 | /* Allow user to decrease AMPDU factor */ |
822854b0 | 117 | if (ht_capa_mask->ampdu_params_info & |
ef96a842 | 118 | IEEE80211_HT_AMPDU_PARM_FACTOR) { |
822854b0 SW |
119 | u8 n = ht_capa->ampdu_params_info & |
120 | IEEE80211_HT_AMPDU_PARM_FACTOR; | |
ef96a842 BG |
121 | if (n < ht_cap->ampdu_factor) |
122 | ht_cap->ampdu_factor = n; | |
123 | } | |
124 | ||
125 | /* Allow the user to increase AMPDU density. */ | |
822854b0 | 126 | if (ht_capa_mask->ampdu_params_info & |
ef96a842 | 127 | IEEE80211_HT_AMPDU_PARM_DENSITY) { |
822854b0 | 128 | u8 n = (ht_capa->ampdu_params_info & |
ef96a842 BG |
129 | IEEE80211_HT_AMPDU_PARM_DENSITY) |
130 | >> IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT; | |
131 | if (n > ht_cap->ampdu_density) | |
132 | ht_cap->ampdu_density = n; | |
133 | } | |
134 | } | |
135 | ||
136 | ||
e1a0c6b3 | 137 | bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, |
ef96a842 | 138 | struct ieee80211_supported_band *sband, |
4a3cb702 | 139 | const struct ieee80211_ht_cap *ht_cap_ie, |
e1a0c6b3 | 140 | struct sta_info *sta) |
44d414db | 141 | { |
c07270b6 | 142 | struct ieee80211_sta_ht_cap ht_cap, own_cap; |
ae5eb026 JB |
143 | u8 ampdu_info, tx_mcs_set_cap; |
144 | int i, max_tx_streams; | |
e1a0c6b3 JB |
145 | bool changed; |
146 | enum ieee80211_sta_rx_bandwidth bw; | |
af0ed69b | 147 | enum ieee80211_smps_mode smps_mode; |
44d414db | 148 | |
e1a0c6b3 | 149 | memset(&ht_cap, 0, sizeof(ht_cap)); |
44d414db | 150 | |
15804e3e | 151 | if (!ht_cap_ie || !sband->ht_cap.ht_supported) |
e1a0c6b3 | 152 | goto apply; |
d9fe60de | 153 | |
e1a0c6b3 | 154 | ht_cap.ht_supported = true; |
d9fe60de | 155 | |
c07270b6 JB |
156 | own_cap = sband->ht_cap; |
157 | ||
158 | /* | |
159 | * If user has specified capability over-rides, take care | |
13cc8a4a | 160 | * of that if the station we're setting up is the AP or TDLS peer that |
c07270b6 JB |
161 | * we advertised a restricted capability set to. Override |
162 | * our own capabilities and then use those below. | |
163 | */ | |
13cc8a4a AN |
164 | if (sdata->vif.type == NL80211_IFTYPE_STATION || |
165 | sdata->vif.type == NL80211_IFTYPE_ADHOC) | |
c07270b6 JB |
166 | ieee80211_apply_htcap_overrides(sdata, &own_cap); |
167 | ||
9a418af5 JB |
168 | /* |
169 | * The bits listed in this expression should be | |
170 | * the same for the peer and us, if the station | |
171 | * advertises more then we can't use those thus | |
172 | * we mask them out. | |
173 | */ | |
e1a0c6b3 | 174 | ht_cap.cap = le16_to_cpu(ht_cap_ie->cap_info) & |
c07270b6 JB |
175 | (own_cap.cap | ~(IEEE80211_HT_CAP_LDPC_CODING | |
176 | IEEE80211_HT_CAP_SUP_WIDTH_20_40 | | |
177 | IEEE80211_HT_CAP_GRN_FLD | | |
178 | IEEE80211_HT_CAP_SGI_20 | | |
179 | IEEE80211_HT_CAP_SGI_40 | | |
180 | IEEE80211_HT_CAP_DSSSCCK40)); | |
21add825 | 181 | |
9a418af5 JB |
182 | /* |
183 | * The STBC bits are asymmetric -- if we don't have | |
184 | * TX then mask out the peer's RX and vice versa. | |
185 | */ | |
c07270b6 | 186 | if (!(own_cap.cap & IEEE80211_HT_CAP_TX_STBC)) |
e1a0c6b3 | 187 | ht_cap.cap &= ~IEEE80211_HT_CAP_RX_STBC; |
c07270b6 | 188 | if (!(own_cap.cap & IEEE80211_HT_CAP_RX_STBC)) |
e1a0c6b3 | 189 | ht_cap.cap &= ~IEEE80211_HT_CAP_TX_STBC; |
d9fe60de | 190 | |
ae5eb026 | 191 | ampdu_info = ht_cap_ie->ampdu_params_info; |
e1a0c6b3 | 192 | ht_cap.ampdu_factor = |
ae5eb026 | 193 | ampdu_info & IEEE80211_HT_AMPDU_PARM_FACTOR; |
e1a0c6b3 | 194 | ht_cap.ampdu_density = |
ae5eb026 | 195 | (ampdu_info & IEEE80211_HT_AMPDU_PARM_DENSITY) >> 2; |
44d414db | 196 | |
d9fe60de | 197 | /* own MCS TX capabilities */ |
c07270b6 | 198 | tx_mcs_set_cap = own_cap.mcs.tx_params; |
d9fe60de | 199 | |
90b4ca9d | 200 | /* Copy peer MCS TX capabilities, the driver might need them. */ |
e1a0c6b3 | 201 | ht_cap.mcs.tx_params = ht_cap_ie->mcs.tx_params; |
90b4ca9d | 202 | |
d9fe60de JB |
203 | /* can we TX with MCS rates? */ |
204 | if (!(tx_mcs_set_cap & IEEE80211_HT_MCS_TX_DEFINED)) | |
e1a0c6b3 | 205 | goto apply; |
d9fe60de JB |
206 | |
207 | /* Counting from 0, therefore +1 */ | |
208 | if (tx_mcs_set_cap & IEEE80211_HT_MCS_TX_RX_DIFF) | |
209 | max_tx_streams = | |
210 | ((tx_mcs_set_cap & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) | |
211 | >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT) + 1; | |
212 | else | |
213 | max_tx_streams = IEEE80211_HT_MCS_TX_MAX_STREAMS; | |
214 | ||
215 | /* | |
90b4ca9d | 216 | * 802.11n-2009 20.3.5 / 20.6 says: |
d9fe60de JB |
217 | * - indices 0 to 7 and 32 are single spatial stream |
218 | * - 8 to 31 are multiple spatial streams using equal modulation | |
219 | * [8..15 for two streams, 16..23 for three and 24..31 for four] | |
220 | * - remainder are multiple spatial streams using unequal modulation | |
221 | */ | |
222 | for (i = 0; i < max_tx_streams; i++) | |
e1a0c6b3 | 223 | ht_cap.mcs.rx_mask[i] = |
c07270b6 | 224 | own_cap.mcs.rx_mask[i] & ht_cap_ie->mcs.rx_mask[i]; |
d9fe60de JB |
225 | |
226 | if (tx_mcs_set_cap & IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION) | |
227 | for (i = IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE; | |
228 | i < IEEE80211_HT_MCS_MASK_LEN; i++) | |
e1a0c6b3 | 229 | ht_cap.mcs.rx_mask[i] = |
c07270b6 | 230 | own_cap.mcs.rx_mask[i] & |
ae5eb026 | 231 | ht_cap_ie->mcs.rx_mask[i]; |
d9fe60de JB |
232 | |
233 | /* handle MCS rate 32 too */ | |
c07270b6 | 234 | if (own_cap.mcs.rx_mask[32/8] & ht_cap_ie->mcs.rx_mask[32/8] & 1) |
e1a0c6b3 | 235 | ht_cap.mcs.rx_mask[32/8] |= 1; |
ef96a842 | 236 | |
dc5943d5 AN |
237 | /* set Rx highest rate */ |
238 | ht_cap.mcs.rx_highest = ht_cap_ie->mcs.rx_highest; | |
239 | ||
506bcfa8 EG |
240 | if (ht_cap.cap & IEEE80211_HT_CAP_MAX_AMSDU) |
241 | sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_7935; | |
242 | else | |
243 | sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_3839; | |
244 | ||
e1a0c6b3 | 245 | apply: |
e1a0c6b3 JB |
246 | changed = memcmp(&sta->sta.ht_cap, &ht_cap, sizeof(ht_cap)); |
247 | ||
248 | memcpy(&sta->sta.ht_cap, &ht_cap, sizeof(ht_cap)); | |
249 | ||
250 | switch (sdata->vif.bss_conf.chandef.width) { | |
251 | default: | |
252 | WARN_ON_ONCE(1); | |
253 | /* fall through */ | |
254 | case NL80211_CHAN_WIDTH_20_NOHT: | |
255 | case NL80211_CHAN_WIDTH_20: | |
256 | bw = IEEE80211_STA_RX_BW_20; | |
257 | break; | |
258 | case NL80211_CHAN_WIDTH_40: | |
259 | case NL80211_CHAN_WIDTH_80: | |
260 | case NL80211_CHAN_WIDTH_80P80: | |
261 | case NL80211_CHAN_WIDTH_160: | |
262 | bw = ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ? | |
263 | IEEE80211_STA_RX_BW_40 : IEEE80211_STA_RX_BW_20; | |
264 | break; | |
265 | } | |
266 | ||
e1a0c6b3 JB |
267 | sta->sta.bandwidth = bw; |
268 | ||
0af83d3d JB |
269 | sta->cur_max_bandwidth = |
270 | ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ? | |
271 | IEEE80211_STA_RX_BW_40 : IEEE80211_STA_RX_BW_20; | |
272 | ||
af0ed69b JB |
273 | switch ((ht_cap.cap & IEEE80211_HT_CAP_SM_PS) |
274 | >> IEEE80211_HT_CAP_SM_PS_SHIFT) { | |
275 | case WLAN_HT_CAP_SM_PS_INVALID: | |
276 | case WLAN_HT_CAP_SM_PS_STATIC: | |
277 | smps_mode = IEEE80211_SMPS_STATIC; | |
278 | break; | |
279 | case WLAN_HT_CAP_SM_PS_DYNAMIC: | |
280 | smps_mode = IEEE80211_SMPS_DYNAMIC; | |
281 | break; | |
282 | case WLAN_HT_CAP_SM_PS_DISABLED: | |
283 | smps_mode = IEEE80211_SMPS_OFF; | |
284 | break; | |
285 | } | |
286 | ||
287 | if (smps_mode != sta->sta.smps_mode) | |
288 | changed = true; | |
289 | sta->sta.smps_mode = smps_mode; | |
290 | ||
e1a0c6b3 | 291 | return changed; |
ae5eb026 JB |
292 | } |
293 | ||
c82c4a80 JB |
294 | void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, |
295 | enum ieee80211_agg_stop_reason reason) | |
de1ede7a | 296 | { |
b8695a8f | 297 | int i; |
de1ede7a | 298 | |
12811037 | 299 | mutex_lock(&sta->ampdu_mlme.mtx); |
0afe9d4a | 300 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
12811037 I |
301 | ___ieee80211_stop_rx_ba_session(sta, i, WLAN_BACK_RECIPIENT, |
302 | WLAN_REASON_QSTA_LEAVE_QBSS, | |
303 | reason != AGG_STOP_DESTROY_STA && | |
304 | reason != AGG_STOP_PEER_REQUEST); | |
7a7c0a64 | 305 | |
72e2c343 SS |
306 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
307 | ___ieee80211_stop_tx_ba_session(sta, i, reason); | |
0afe9d4a | 308 | mutex_unlock(&sta->ampdu_mlme.mtx); |
72e2c343 | 309 | |
98e93e96 I |
310 | /* |
311 | * In case the tear down is part of a reconfigure due to HW restart | |
312 | * request, it is possible that the low level driver requested to stop | |
313 | * the BA session, so handle it to properly clean tid_tx data. | |
314 | */ | |
39c1134c AW |
315 | if(reason == AGG_STOP_DESTROY_STA) { |
316 | cancel_work_sync(&sta->ampdu_mlme.work); | |
98e93e96 | 317 | |
39c1134c AW |
318 | mutex_lock(&sta->ampdu_mlme.mtx); |
319 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) { | |
320 | struct tid_ampdu_tx *tid_tx = | |
321 | rcu_dereference_protected_tid_tx(sta, i); | |
98e93e96 | 322 | |
39c1134c AW |
323 | if (!tid_tx) |
324 | continue; | |
325 | ||
326 | if (test_and_clear_bit(HT_AGG_STATE_STOP_CB, &tid_tx->state)) | |
327 | ieee80211_stop_tx_ba_cb(sta, i, tid_tx); | |
328 | } | |
329 | mutex_unlock(&sta->ampdu_mlme.mtx); | |
98e93e96 | 330 | } |
de1ede7a JB |
331 | } |
332 | ||
67c282c0 JB |
333 | void ieee80211_ba_session_work(struct work_struct *work) |
334 | { | |
335 | struct sta_info *sta = | |
336 | container_of(work, struct sta_info, ampdu_mlme.work); | |
337 | struct tid_ampdu_tx *tid_tx; | |
39c1134c | 338 | bool blocked; |
67c282c0 JB |
339 | int tid; |
340 | ||
39c1134c AW |
341 | /* When this flag is set, new sessions should be blocked. */ |
342 | blocked = test_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
67c282c0 | 343 | |
a93e3644 | 344 | mutex_lock(&sta->ampdu_mlme.mtx); |
5a306f58 | 345 | for (tid = 0; tid < IEEE80211_NUM_TIDS; tid++) { |
7c3b1dd8 JB |
346 | if (test_and_clear_bit(tid, sta->ampdu_mlme.tid_rx_timer_expired)) |
347 | ___ieee80211_stop_rx_ba_session( | |
348 | sta, tid, WLAN_BACK_RECIPIENT, | |
53f73c09 | 349 | WLAN_REASON_QSTA_TIMEOUT, true); |
7c3b1dd8 | 350 | |
f41ccd71 SL |
351 | if (test_and_clear_bit(tid, |
352 | sta->ampdu_mlme.tid_rx_stop_requested)) | |
353 | ___ieee80211_stop_rx_ba_session( | |
354 | sta, tid, WLAN_BACK_RECIPIENT, | |
355 | WLAN_REASON_UNSPECIFIED, true); | |
356 | ||
39c1134c AW |
357 | if (!blocked && |
358 | test_and_clear_bit(tid, | |
699cb58c | 359 | sta->ampdu_mlme.tid_rx_manage_offl)) |
bde59c47 | 360 | ___ieee80211_start_rx_ba_session(sta, 0, 0, 0, 1, tid, |
b8042b3d | 361 | IEEE80211_MAX_AMPDU_BUF_HT, |
bde59c47 | 362 | false, true); |
699cb58c JB |
363 | |
364 | if (test_and_clear_bit(tid + IEEE80211_NUM_TIDS, | |
365 | sta->ampdu_mlme.tid_rx_manage_offl)) | |
366 | ___ieee80211_stop_rx_ba_session( | |
367 | sta, tid, WLAN_BACK_RECIPIENT, | |
368 | 0, false); | |
369 | ||
e562078a BG |
370 | spin_lock_bh(&sta->lock); |
371 | ||
ec034b20 | 372 | tid_tx = sta->ampdu_mlme.tid_start_tx[tid]; |
39c1134c | 373 | if (!blocked && tid_tx) { |
ec034b20 JB |
374 | /* |
375 | * Assign it over to the normal tid_tx array | |
376 | * where it "goes live". | |
377 | */ | |
ec034b20 JB |
378 | |
379 | sta->ampdu_mlme.tid_start_tx[tid] = NULL; | |
380 | /* could there be a race? */ | |
381 | if (sta->ampdu_mlme.tid_tx[tid]) | |
382 | kfree(tid_tx); | |
383 | else | |
384 | ieee80211_assign_tid_tx(sta, tid, tid_tx); | |
385 | spin_unlock_bh(&sta->lock); | |
67c282c0 | 386 | |
67c282c0 | 387 | ieee80211_tx_ba_session_handle_start(sta, tid); |
ec034b20 JB |
388 | continue; |
389 | } | |
e562078a | 390 | spin_unlock_bh(&sta->lock); |
ec034b20 | 391 | |
40b275b6 | 392 | tid_tx = rcu_dereference_protected_tid_tx(sta, tid); |
7a7c0a64 JB |
393 | if (!tid_tx) |
394 | continue; | |
395 | ||
39c1134c AW |
396 | if (!blocked && |
397 | test_and_clear_bit(HT_AGG_STATE_START_CB, &tid_tx->state)) | |
7a7c0a64 JB |
398 | ieee80211_start_tx_ba_cb(sta, tid, tid_tx); |
399 | if (test_and_clear_bit(HT_AGG_STATE_WANT_STOP, &tid_tx->state)) | |
67c282c0 | 400 | ___ieee80211_stop_tx_ba_session(sta, tid, |
c82c4a80 | 401 | AGG_STOP_LOCAL_REQUEST); |
7a7c0a64 JB |
402 | if (test_and_clear_bit(HT_AGG_STATE_STOP_CB, &tid_tx->state)) |
403 | ieee80211_stop_tx_ba_cb(sta, tid, tid_tx); | |
67c282c0 | 404 | } |
cfcdbde3 | 405 | mutex_unlock(&sta->ampdu_mlme.mtx); |
67c282c0 JB |
406 | } |
407 | ||
b8695a8f JB |
408 | void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, |
409 | const u8 *da, u16 tid, | |
410 | u16 initiator, u16 reason_code) | |
44d414db JB |
411 | { |
412 | struct ieee80211_local *local = sdata->local; | |
44d414db JB |
413 | struct sk_buff *skb; |
414 | struct ieee80211_mgmt *mgmt; | |
415 | u16 params; | |
416 | ||
417 | skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom); | |
d15b8459 | 418 | if (!skb) |
44d414db | 419 | return; |
44d414db JB |
420 | |
421 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
b080db58 | 422 | mgmt = skb_put_zero(skb, 24); |
44d414db | 423 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 424 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
8abd3f9b | 425 | if (sdata->vif.type == NL80211_IFTYPE_AP || |
ae2772b3 TP |
426 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN || |
427 | sdata->vif.type == NL80211_IFTYPE_MESH_POINT) | |
47846c9b | 428 | memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); |
46900298 JB |
429 | else if (sdata->vif.type == NL80211_IFTYPE_STATION) |
430 | memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN); | |
13c40c54 AS |
431 | else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) |
432 | memcpy(mgmt->bssid, sdata->u.ibss.bssid, ETH_ALEN); | |
46900298 | 433 | |
44d414db JB |
434 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
435 | IEEE80211_STYPE_ACTION); | |
436 | ||
437 | skb_put(skb, 1 + sizeof(mgmt->u.action.u.delba)); | |
438 | ||
439 | mgmt->u.action.category = WLAN_CATEGORY_BACK; | |
440 | mgmt->u.action.u.delba.action_code = WLAN_ACTION_DELBA; | |
441 | params = (u16)(initiator << 11); /* bit 11 initiator */ | |
442 | params |= (u16)(tid << 12); /* bit 15:12 TID number */ | |
443 | ||
444 | mgmt->u.action.u.delba.params = cpu_to_le16(params); | |
445 | mgmt->u.action.u.delba.reason_code = cpu_to_le16(reason_code); | |
446 | ||
c6e13327 | 447 | ieee80211_tx_skb(sdata, skb); |
44d414db JB |
448 | } |
449 | ||
de1ede7a JB |
450 | void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, |
451 | struct sta_info *sta, | |
452 | struct ieee80211_mgmt *mgmt, size_t len) | |
453 | { | |
de1ede7a JB |
454 | u16 tid, params; |
455 | u16 initiator; | |
de1ede7a JB |
456 | |
457 | params = le16_to_cpu(mgmt->u.action.u.delba.params); | |
458 | tid = (params & IEEE80211_DELBA_PARAM_TID_MASK) >> 12; | |
459 | initiator = (params & IEEE80211_DELBA_PARAM_INITIATOR_MASK) >> 11; | |
460 | ||
bdcbd8e0 JB |
461 | ht_dbg_ratelimited(sdata, "delba from %pM (%s) tid %d reason code %d\n", |
462 | mgmt->sa, initiator ? "initiator" : "recipient", | |
463 | tid, | |
464 | le16_to_cpu(mgmt->u.action.u.delba.reason_code)); | |
de1ede7a JB |
465 | |
466 | if (initiator == WLAN_BACK_INITIATOR) | |
53f73c09 JB |
467 | __ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_INITIATOR, 0, |
468 | true); | |
a622ab72 | 469 | else |
c82c4a80 | 470 | __ieee80211_stop_tx_ba_session(sta, tid, AGG_STOP_PEER_REQUEST); |
de1ede7a | 471 | } |
0f78231b | 472 | |
57566b20 | 473 | enum nl80211_smps_mode |
474 | ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps) | |
475 | { | |
476 | switch (smps) { | |
477 | case IEEE80211_SMPS_OFF: | |
478 | return NL80211_SMPS_OFF; | |
479 | case IEEE80211_SMPS_STATIC: | |
480 | return NL80211_SMPS_STATIC; | |
481 | case IEEE80211_SMPS_DYNAMIC: | |
482 | return NL80211_SMPS_DYNAMIC; | |
483 | default: | |
484 | return NL80211_SMPS_OFF; | |
485 | } | |
486 | } | |
487 | ||
0f78231b JB |
488 | int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, |
489 | enum ieee80211_smps_mode smps, const u8 *da, | |
490 | const u8 *bssid) | |
491 | { | |
492 | struct ieee80211_local *local = sdata->local; | |
493 | struct sk_buff *skb; | |
494 | struct ieee80211_mgmt *action_frame; | |
495 | ||
496 | /* 27 = header + category + action + smps mode */ | |
497 | skb = dev_alloc_skb(27 + local->hw.extra_tx_headroom); | |
498 | if (!skb) | |
499 | return -ENOMEM; | |
500 | ||
501 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
4df864c1 | 502 | action_frame = skb_put(skb, 27); |
0f78231b JB |
503 | memcpy(action_frame->da, da, ETH_ALEN); |
504 | memcpy(action_frame->sa, sdata->dev->dev_addr, ETH_ALEN); | |
505 | memcpy(action_frame->bssid, bssid, ETH_ALEN); | |
506 | action_frame->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
507 | IEEE80211_STYPE_ACTION); | |
508 | action_frame->u.action.category = WLAN_CATEGORY_HT; | |
509 | action_frame->u.action.u.ht_smps.action = WLAN_HT_ACTION_SMPS; | |
510 | switch (smps) { | |
511 | case IEEE80211_SMPS_AUTOMATIC: | |
512 | case IEEE80211_SMPS_NUM_MODES: | |
513 | WARN_ON(1); | |
02049ce2 | 514 | /* fall through */ |
0f78231b JB |
515 | case IEEE80211_SMPS_OFF: |
516 | action_frame->u.action.u.ht_smps.smps_control = | |
517 | WLAN_HT_SMPS_CONTROL_DISABLED; | |
518 | break; | |
519 | case IEEE80211_SMPS_STATIC: | |
520 | action_frame->u.action.u.ht_smps.smps_control = | |
521 | WLAN_HT_SMPS_CONTROL_STATIC; | |
522 | break; | |
523 | case IEEE80211_SMPS_DYNAMIC: | |
524 | action_frame->u.action.u.ht_smps.smps_control = | |
525 | WLAN_HT_SMPS_CONTROL_DYNAMIC; | |
526 | break; | |
527 | } | |
528 | ||
529 | /* we'll do more on status of this frame */ | |
530 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS; | |
531 | ieee80211_tx_skb(sdata, skb); | |
532 | ||
533 | return 0; | |
534 | } | |
d1f5b7a3 | 535 | |
687da132 | 536 | void ieee80211_request_smps_mgd_work(struct work_struct *work) |
d1f5b7a3 JB |
537 | { |
538 | struct ieee80211_sub_if_data *sdata = | |
539 | container_of(work, struct ieee80211_sub_if_data, | |
540 | u.mgd.request_smps_work); | |
541 | ||
8d61ffa5 | 542 | sdata_lock(sdata); |
687da132 EG |
543 | __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.driver_smps_mode); |
544 | sdata_unlock(sdata); | |
545 | } | |
546 | ||
547 | void ieee80211_request_smps_ap_work(struct work_struct *work) | |
548 | { | |
549 | struct ieee80211_sub_if_data *sdata = | |
550 | container_of(work, struct ieee80211_sub_if_data, | |
551 | u.ap.request_smps_work); | |
552 | ||
553 | sdata_lock(sdata); | |
8ffcc704 EG |
554 | if (sdata_dereference(sdata->u.ap.beacon, sdata)) |
555 | __ieee80211_request_smps_ap(sdata, | |
556 | sdata->u.ap.driver_smps_mode); | |
8d61ffa5 | 557 | sdata_unlock(sdata); |
d1f5b7a3 JB |
558 | } |
559 | ||
560 | void ieee80211_request_smps(struct ieee80211_vif *vif, | |
561 | enum ieee80211_smps_mode smps_mode) | |
562 | { | |
563 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
564 | ||
687da132 EG |
565 | if (WARN_ON_ONCE(vif->type != NL80211_IFTYPE_STATION && |
566 | vif->type != NL80211_IFTYPE_AP)) | |
d1f5b7a3 JB |
567 | return; |
568 | ||
687da132 EG |
569 | if (vif->type == NL80211_IFTYPE_STATION) { |
570 | if (sdata->u.mgd.driver_smps_mode == smps_mode) | |
571 | return; | |
572 | sdata->u.mgd.driver_smps_mode = smps_mode; | |
573 | ieee80211_queue_work(&sdata->local->hw, | |
574 | &sdata->u.mgd.request_smps_work); | |
575 | } else { | |
576 | /* AUTOMATIC is meaningless in AP mode */ | |
577 | if (WARN_ON_ONCE(smps_mode == IEEE80211_SMPS_AUTOMATIC)) | |
578 | return; | |
579 | if (sdata->u.ap.driver_smps_mode == smps_mode) | |
580 | return; | |
581 | sdata->u.ap.driver_smps_mode = smps_mode; | |
582 | ieee80211_queue_work(&sdata->local->hw, | |
583 | &sdata->u.ap.request_smps_work); | |
584 | } | |
d1f5b7a3 JB |
585 | } |
586 | /* this might change ... don't want non-open drivers using it */ | |
587 | EXPORT_SYMBOL_GPL(ieee80211_request_smps); |