Commit | Line | Data |
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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 |
1444f589 | 12 | * Copyright(c) 2020-2023 Intel Corporation |
44d414db JB |
13 | */ |
14 | ||
15 | #include <linux/ieee80211.h> | |
bc3b2d7f | 16 | #include <linux/export.h> |
44d414db JB |
17 | #include <net/mac80211.h> |
18 | #include "ieee80211_i.h" | |
81cb7623 | 19 | #include "rate.h" |
44d414db | 20 | |
822854b0 SW |
21 | static void __check_htcap_disable(struct ieee80211_ht_cap *ht_capa, |
22 | struct ieee80211_ht_cap *ht_capa_mask, | |
32dfefac BG |
23 | struct ieee80211_sta_ht_cap *ht_cap, |
24 | u16 flag) | |
ef96a842 BG |
25 | { |
26 | __le16 le_flag = cpu_to_le16(flag); | |
822854b0 SW |
27 | if (ht_capa_mask->cap_info & le_flag) { |
28 | if (!(ht_capa->cap_info & le_flag)) | |
ef96a842 BG |
29 | ht_cap->cap &= ~flag; |
30 | } | |
31 | } | |
32 | ||
9a07bf50 JM |
33 | static void __check_htcap_enable(struct ieee80211_ht_cap *ht_capa, |
34 | struct ieee80211_ht_cap *ht_capa_mask, | |
35 | struct ieee80211_sta_ht_cap *ht_cap, | |
36 | u16 flag) | |
37 | { | |
38 | __le16 le_flag = cpu_to_le16(flag); | |
39 | ||
40 | if ((ht_capa_mask->cap_info & le_flag) && | |
41 | (ht_capa->cap_info & le_flag)) | |
42 | ht_cap->cap |= flag; | |
43 | } | |
44 | ||
ef96a842 BG |
45 | void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, |
46 | struct ieee80211_sta_ht_cap *ht_cap) | |
47 | { | |
822854b0 SW |
48 | struct ieee80211_ht_cap *ht_capa, *ht_capa_mask; |
49 | u8 *scaps, *smask; | |
ef96a842 BG |
50 | int i; |
51 | ||
e1a0c6b3 JB |
52 | if (!ht_cap->ht_supported) |
53 | return; | |
54 | ||
822854b0 SW |
55 | switch (sdata->vif.type) { |
56 | case NL80211_IFTYPE_STATION: | |
57 | ht_capa = &sdata->u.mgd.ht_capa; | |
58 | ht_capa_mask = &sdata->u.mgd.ht_capa_mask; | |
59 | break; | |
60 | case NL80211_IFTYPE_ADHOC: | |
61 | ht_capa = &sdata->u.ibss.ht_capa; | |
62 | ht_capa_mask = &sdata->u.ibss.ht_capa_mask; | |
63 | break; | |
64 | default: | |
65 | WARN_ON_ONCE(1); | |
66 | return; | |
67 | } | |
68 | ||
69 | scaps = (u8 *)(&ht_capa->mcs.rx_mask); | |
70 | smask = (u8 *)(&ht_capa_mask->mcs.rx_mask); | |
71 | ||
ef96a842 | 72 | /* NOTE: If you add more over-rides here, update register_hw |
9a07bf50 | 73 | * ht_capa_mod_mask logic in main.c as well. |
ef96a842 BG |
74 | * And, if this method can ever change ht_cap.ht_supported, fix |
75 | * the check in ieee80211_add_ht_ie. | |
76 | */ | |
77 | ||
78 | /* check for HT over-rides, MCS rates first. */ | |
79 | for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) { | |
80 | u8 m = smask[i]; | |
81 | ht_cap->mcs.rx_mask[i] &= ~m; /* turn off all masked bits */ | |
82 | /* Add back rates that are supported */ | |
83 | ht_cap->mcs.rx_mask[i] |= (m & scaps[i]); | |
84 | } | |
85 | ||
86 | /* Force removal of HT-40 capabilities? */ | |
822854b0 SW |
87 | __check_htcap_disable(ht_capa, ht_capa_mask, ht_cap, |
88 | IEEE80211_HT_CAP_SUP_WIDTH_20_40); | |
89 | __check_htcap_disable(ht_capa, ht_capa_mask, ht_cap, | |
90 | IEEE80211_HT_CAP_SGI_40); | |
ef96a842 | 91 | |
bc0784d9 | 92 | /* Allow user to disable SGI-20 (SGI-40 is handled above) */ |
822854b0 SW |
93 | __check_htcap_disable(ht_capa, ht_capa_mask, ht_cap, |
94 | IEEE80211_HT_CAP_SGI_20); | |
bc0784d9 | 95 | |
ef96a842 | 96 | /* Allow user to disable the max-AMSDU bit. */ |
822854b0 SW |
97 | __check_htcap_disable(ht_capa, ht_capa_mask, ht_cap, |
98 | IEEE80211_HT_CAP_MAX_AMSDU); | |
ef96a842 | 99 | |
a2e7495d PK |
100 | /* Allow user to disable LDPC */ |
101 | __check_htcap_disable(ht_capa, ht_capa_mask, ht_cap, | |
102 | IEEE80211_HT_CAP_LDPC_CODING); | |
103 | ||
9a07bf50 JM |
104 | /* Allow user to enable 40 MHz intolerant bit. */ |
105 | __check_htcap_enable(ht_capa, ht_capa_mask, ht_cap, | |
106 | IEEE80211_HT_CAP_40MHZ_INTOLERANT); | |
107 | ||
d9bb4108 SM |
108 | /* Allow user to enable TX STBC bit */ |
109 | __check_htcap_enable(ht_capa, ht_capa_mask, ht_cap, | |
110 | IEEE80211_HT_CAP_TX_STBC); | |
111 | ||
112 | /* Allow user to configure RX STBC bits */ | |
e9f33a8f JB |
113 | if (ht_capa_mask->cap_info & cpu_to_le16(IEEE80211_HT_CAP_RX_STBC)) |
114 | ht_cap->cap |= le16_to_cpu(ht_capa->cap_info) & | |
115 | IEEE80211_HT_CAP_RX_STBC; | |
d9bb4108 | 116 | |
ef96a842 | 117 | /* Allow user to decrease AMPDU factor */ |
822854b0 | 118 | if (ht_capa_mask->ampdu_params_info & |
ef96a842 | 119 | IEEE80211_HT_AMPDU_PARM_FACTOR) { |
822854b0 SW |
120 | u8 n = ht_capa->ampdu_params_info & |
121 | IEEE80211_HT_AMPDU_PARM_FACTOR; | |
ef96a842 BG |
122 | if (n < ht_cap->ampdu_factor) |
123 | ht_cap->ampdu_factor = n; | |
124 | } | |
125 | ||
126 | /* Allow the user to increase AMPDU density. */ | |
822854b0 | 127 | if (ht_capa_mask->ampdu_params_info & |
ef96a842 | 128 | IEEE80211_HT_AMPDU_PARM_DENSITY) { |
822854b0 | 129 | u8 n = (ht_capa->ampdu_params_info & |
ef96a842 BG |
130 | IEEE80211_HT_AMPDU_PARM_DENSITY) |
131 | >> IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT; | |
132 | if (n > ht_cap->ampdu_density) | |
133 | ht_cap->ampdu_density = n; | |
134 | } | |
135 | } | |
136 | ||
137 | ||
e1a0c6b3 | 138 | bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, |
ef96a842 | 139 | struct ieee80211_supported_band *sband, |
4a3cb702 | 140 | const struct ieee80211_ht_cap *ht_cap_ie, |
c71420db | 141 | struct link_sta_info *link_sta) |
44d414db | 142 | { |
d8675a63 | 143 | struct ieee80211_bss_conf *link_conf; |
c71420db | 144 | struct sta_info *sta = link_sta->sta; |
c07270b6 | 145 | struct ieee80211_sta_ht_cap ht_cap, own_cap; |
ae5eb026 JB |
146 | u8 ampdu_info, tx_mcs_set_cap; |
147 | int i, max_tx_streams; | |
e1a0c6b3 JB |
148 | bool changed; |
149 | enum ieee80211_sta_rx_bandwidth bw; | |
d8675a63 | 150 | enum nl80211_chan_width width; |
44d414db | 151 | |
e1a0c6b3 | 152 | memset(&ht_cap, 0, sizeof(ht_cap)); |
44d414db | 153 | |
15804e3e | 154 | if (!ht_cap_ie || !sband->ht_cap.ht_supported) |
e1a0c6b3 | 155 | goto apply; |
d9fe60de | 156 | |
e1a0c6b3 | 157 | ht_cap.ht_supported = true; |
d9fe60de | 158 | |
c07270b6 JB |
159 | own_cap = sband->ht_cap; |
160 | ||
161 | /* | |
162 | * If user has specified capability over-rides, take care | |
13cc8a4a | 163 | * of that if the station we're setting up is the AP or TDLS peer that |
c07270b6 JB |
164 | * we advertised a restricted capability set to. Override |
165 | * our own capabilities and then use those below. | |
166 | */ | |
13cc8a4a AN |
167 | if (sdata->vif.type == NL80211_IFTYPE_STATION || |
168 | sdata->vif.type == NL80211_IFTYPE_ADHOC) | |
c07270b6 JB |
169 | ieee80211_apply_htcap_overrides(sdata, &own_cap); |
170 | ||
9a418af5 JB |
171 | /* |
172 | * The bits listed in this expression should be | |
173 | * the same for the peer and us, if the station | |
174 | * advertises more then we can't use those thus | |
175 | * we mask them out. | |
176 | */ | |
e1a0c6b3 | 177 | ht_cap.cap = le16_to_cpu(ht_cap_ie->cap_info) & |
c07270b6 JB |
178 | (own_cap.cap | ~(IEEE80211_HT_CAP_LDPC_CODING | |
179 | IEEE80211_HT_CAP_SUP_WIDTH_20_40 | | |
180 | IEEE80211_HT_CAP_GRN_FLD | | |
181 | IEEE80211_HT_CAP_SGI_20 | | |
182 | IEEE80211_HT_CAP_SGI_40 | | |
183 | IEEE80211_HT_CAP_DSSSCCK40)); | |
21add825 | 184 | |
9a418af5 JB |
185 | /* |
186 | * The STBC bits are asymmetric -- if we don't have | |
187 | * TX then mask out the peer's RX and vice versa. | |
188 | */ | |
c07270b6 | 189 | if (!(own_cap.cap & IEEE80211_HT_CAP_TX_STBC)) |
e1a0c6b3 | 190 | ht_cap.cap &= ~IEEE80211_HT_CAP_RX_STBC; |
c07270b6 | 191 | if (!(own_cap.cap & IEEE80211_HT_CAP_RX_STBC)) |
e1a0c6b3 | 192 | ht_cap.cap &= ~IEEE80211_HT_CAP_TX_STBC; |
d9fe60de | 193 | |
ae5eb026 | 194 | ampdu_info = ht_cap_ie->ampdu_params_info; |
e1a0c6b3 | 195 | ht_cap.ampdu_factor = |
ae5eb026 | 196 | ampdu_info & IEEE80211_HT_AMPDU_PARM_FACTOR; |
e1a0c6b3 | 197 | ht_cap.ampdu_density = |
ae5eb026 | 198 | (ampdu_info & IEEE80211_HT_AMPDU_PARM_DENSITY) >> 2; |
44d414db | 199 | |
d9fe60de | 200 | /* own MCS TX capabilities */ |
c07270b6 | 201 | tx_mcs_set_cap = own_cap.mcs.tx_params; |
d9fe60de | 202 | |
90b4ca9d | 203 | /* Copy peer MCS TX capabilities, the driver might need them. */ |
e1a0c6b3 | 204 | ht_cap.mcs.tx_params = ht_cap_ie->mcs.tx_params; |
90b4ca9d | 205 | |
d9fe60de JB |
206 | /* can we TX with MCS rates? */ |
207 | if (!(tx_mcs_set_cap & IEEE80211_HT_MCS_TX_DEFINED)) | |
e1a0c6b3 | 208 | goto apply; |
d9fe60de JB |
209 | |
210 | /* Counting from 0, therefore +1 */ | |
211 | if (tx_mcs_set_cap & IEEE80211_HT_MCS_TX_RX_DIFF) | |
212 | max_tx_streams = | |
213 | ((tx_mcs_set_cap & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) | |
214 | >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT) + 1; | |
215 | else | |
216 | max_tx_streams = IEEE80211_HT_MCS_TX_MAX_STREAMS; | |
217 | ||
218 | /* | |
90b4ca9d | 219 | * 802.11n-2009 20.3.5 / 20.6 says: |
d9fe60de JB |
220 | * - indices 0 to 7 and 32 are single spatial stream |
221 | * - 8 to 31 are multiple spatial streams using equal modulation | |
222 | * [8..15 for two streams, 16..23 for three and 24..31 for four] | |
223 | * - remainder are multiple spatial streams using unequal modulation | |
224 | */ | |
225 | for (i = 0; i < max_tx_streams; i++) | |
e1a0c6b3 | 226 | ht_cap.mcs.rx_mask[i] = |
c07270b6 | 227 | own_cap.mcs.rx_mask[i] & ht_cap_ie->mcs.rx_mask[i]; |
d9fe60de JB |
228 | |
229 | if (tx_mcs_set_cap & IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION) | |
230 | for (i = IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE; | |
231 | i < IEEE80211_HT_MCS_MASK_LEN; i++) | |
e1a0c6b3 | 232 | ht_cap.mcs.rx_mask[i] = |
c07270b6 | 233 | own_cap.mcs.rx_mask[i] & |
ae5eb026 | 234 | ht_cap_ie->mcs.rx_mask[i]; |
d9fe60de JB |
235 | |
236 | /* handle MCS rate 32 too */ | |
c07270b6 | 237 | if (own_cap.mcs.rx_mask[32/8] & ht_cap_ie->mcs.rx_mask[32/8] & 1) |
e1a0c6b3 | 238 | ht_cap.mcs.rx_mask[32/8] |= 1; |
ef96a842 | 239 | |
dc5943d5 AN |
240 | /* set Rx highest rate */ |
241 | ht_cap.mcs.rx_highest = ht_cap_ie->mcs.rx_highest; | |
242 | ||
506bcfa8 | 243 | if (ht_cap.cap & IEEE80211_HT_CAP_MAX_AMSDU) |
4c51541d | 244 | link_sta->pub->agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_7935; |
506bcfa8 | 245 | else |
4c51541d BB |
246 | link_sta->pub->agg.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_3839; |
247 | ||
248 | ieee80211_sta_recalc_aggregates(&sta->sta); | |
506bcfa8 | 249 | |
e1a0c6b3 | 250 | apply: |
c71420db | 251 | changed = memcmp(&link_sta->pub->ht_cap, &ht_cap, sizeof(ht_cap)); |
e1a0c6b3 | 252 | |
c71420db | 253 | memcpy(&link_sta->pub->ht_cap, &ht_cap, sizeof(ht_cap)); |
e1a0c6b3 | 254 | |
d8675a63 JB |
255 | rcu_read_lock(); |
256 | link_conf = rcu_dereference(sdata->vif.link_conf[link_sta->link_id]); | |
257 | if (WARN_ON(!link_conf)) | |
258 | width = NL80211_CHAN_WIDTH_20_NOHT; | |
259 | else | |
260 | width = link_conf->chandef.width; | |
261 | ||
262 | switch (width) { | |
e1a0c6b3 JB |
263 | default: |
264 | WARN_ON_ONCE(1); | |
fc0561dc | 265 | fallthrough; |
e1a0c6b3 JB |
266 | case NL80211_CHAN_WIDTH_20_NOHT: |
267 | case NL80211_CHAN_WIDTH_20: | |
268 | bw = IEEE80211_STA_RX_BW_20; | |
269 | break; | |
270 | case NL80211_CHAN_WIDTH_40: | |
271 | case NL80211_CHAN_WIDTH_80: | |
272 | case NL80211_CHAN_WIDTH_80P80: | |
273 | case NL80211_CHAN_WIDTH_160: | |
274 | bw = ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ? | |
275 | IEEE80211_STA_RX_BW_40 : IEEE80211_STA_RX_BW_20; | |
276 | break; | |
277 | } | |
d8675a63 | 278 | rcu_read_unlock(); |
e1a0c6b3 | 279 | |
c71420db | 280 | link_sta->pub->bandwidth = bw; |
e1a0c6b3 | 281 | |
c71420db | 282 | link_sta->cur_max_bandwidth = |
0af83d3d JB |
283 | ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ? |
284 | IEEE80211_STA_RX_BW_40 : IEEE80211_STA_RX_BW_20; | |
285 | ||
c4d800dc IP |
286 | if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
287 | sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { | |
288 | enum ieee80211_smps_mode smps_mode; | |
289 | ||
290 | switch ((ht_cap.cap & IEEE80211_HT_CAP_SM_PS) | |
291 | >> IEEE80211_HT_CAP_SM_PS_SHIFT) { | |
292 | case WLAN_HT_CAP_SM_PS_INVALID: | |
293 | case WLAN_HT_CAP_SM_PS_STATIC: | |
294 | smps_mode = IEEE80211_SMPS_STATIC; | |
295 | break; | |
296 | case WLAN_HT_CAP_SM_PS_DYNAMIC: | |
297 | smps_mode = IEEE80211_SMPS_DYNAMIC; | |
298 | break; | |
299 | case WLAN_HT_CAP_SM_PS_DISABLED: | |
300 | smps_mode = IEEE80211_SMPS_OFF; | |
301 | break; | |
302 | } | |
303 | ||
261ce887 | 304 | if (smps_mode != link_sta->pub->smps_mode) |
c4d800dc | 305 | changed = true; |
261ce887 | 306 | link_sta->pub->smps_mode = smps_mode; |
c4d800dc | 307 | } else { |
261ce887 | 308 | link_sta->pub->smps_mode = IEEE80211_SMPS_OFF; |
af0ed69b | 309 | } |
261ce887 | 310 | |
e1a0c6b3 | 311 | return changed; |
ae5eb026 JB |
312 | } |
313 | ||
c82c4a80 JB |
314 | void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, |
315 | enum ieee80211_agg_stop_reason reason) | |
de1ede7a | 316 | { |
b8695a8f | 317 | int i; |
de1ede7a | 318 | |
12811037 | 319 | mutex_lock(&sta->ampdu_mlme.mtx); |
0afe9d4a | 320 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
12811037 I |
321 | ___ieee80211_stop_rx_ba_session(sta, i, WLAN_BACK_RECIPIENT, |
322 | WLAN_REASON_QSTA_LEAVE_QBSS, | |
323 | reason != AGG_STOP_DESTROY_STA && | |
324 | reason != AGG_STOP_PEER_REQUEST); | |
7a7c0a64 | 325 | |
72e2c343 SS |
326 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
327 | ___ieee80211_stop_tx_ba_session(sta, i, reason); | |
0afe9d4a | 328 | mutex_unlock(&sta->ampdu_mlme.mtx); |
72e2c343 | 329 | |
98e93e96 I |
330 | /* |
331 | * In case the tear down is part of a reconfigure due to HW restart | |
332 | * request, it is possible that the low level driver requested to stop | |
333 | * the BA session, so handle it to properly clean tid_tx data. | |
334 | */ | |
39c1134c AW |
335 | if(reason == AGG_STOP_DESTROY_STA) { |
336 | cancel_work_sync(&sta->ampdu_mlme.work); | |
98e93e96 | 337 | |
39c1134c AW |
338 | mutex_lock(&sta->ampdu_mlme.mtx); |
339 | for (i = 0; i < IEEE80211_NUM_TIDS; i++) { | |
340 | struct tid_ampdu_tx *tid_tx = | |
341 | rcu_dereference_protected_tid_tx(sta, i); | |
98e93e96 | 342 | |
39c1134c AW |
343 | if (!tid_tx) |
344 | continue; | |
345 | ||
346 | if (test_and_clear_bit(HT_AGG_STATE_STOP_CB, &tid_tx->state)) | |
347 | ieee80211_stop_tx_ba_cb(sta, i, tid_tx); | |
348 | } | |
349 | mutex_unlock(&sta->ampdu_mlme.mtx); | |
98e93e96 | 350 | } |
de1ede7a JB |
351 | } |
352 | ||
67c282c0 JB |
353 | void ieee80211_ba_session_work(struct work_struct *work) |
354 | { | |
355 | struct sta_info *sta = | |
356 | container_of(work, struct sta_info, ampdu_mlme.work); | |
357 | struct tid_ampdu_tx *tid_tx; | |
39c1134c | 358 | bool blocked; |
67c282c0 JB |
359 | int tid; |
360 | ||
39c1134c AW |
361 | /* When this flag is set, new sessions should be blocked. */ |
362 | blocked = test_sta_flag(sta, WLAN_STA_BLOCK_BA); | |
67c282c0 | 363 | |
a93e3644 | 364 | mutex_lock(&sta->ampdu_mlme.mtx); |
5a306f58 | 365 | for (tid = 0; tid < IEEE80211_NUM_TIDS; tid++) { |
7c3b1dd8 JB |
366 | if (test_and_clear_bit(tid, sta->ampdu_mlme.tid_rx_timer_expired)) |
367 | ___ieee80211_stop_rx_ba_session( | |
368 | sta, tid, WLAN_BACK_RECIPIENT, | |
53f73c09 | 369 | WLAN_REASON_QSTA_TIMEOUT, true); |
7c3b1dd8 | 370 | |
f41ccd71 SL |
371 | if (test_and_clear_bit(tid, |
372 | sta->ampdu_mlme.tid_rx_stop_requested)) | |
373 | ___ieee80211_stop_rx_ba_session( | |
374 | sta, tid, WLAN_BACK_RECIPIENT, | |
375 | WLAN_REASON_UNSPECIFIED, true); | |
376 | ||
39c1134c AW |
377 | if (!blocked && |
378 | test_and_clear_bit(tid, | |
699cb58c | 379 | sta->ampdu_mlme.tid_rx_manage_offl)) |
bde59c47 | 380 | ___ieee80211_start_rx_ba_session(sta, 0, 0, 0, 1, tid, |
b8042b3d | 381 | IEEE80211_MAX_AMPDU_BUF_HT, |
2ab45876 | 382 | false, true, NULL); |
699cb58c JB |
383 | |
384 | if (test_and_clear_bit(tid + IEEE80211_NUM_TIDS, | |
385 | sta->ampdu_mlme.tid_rx_manage_offl)) | |
386 | ___ieee80211_stop_rx_ba_session( | |
387 | sta, tid, WLAN_BACK_RECIPIENT, | |
388 | 0, false); | |
389 | ||
e562078a BG |
390 | spin_lock_bh(&sta->lock); |
391 | ||
ec034b20 | 392 | tid_tx = sta->ampdu_mlme.tid_start_tx[tid]; |
39c1134c | 393 | if (!blocked && tid_tx) { |
592234e9 AW |
394 | struct txq_info *txqi = to_txq_info(sta->sta.txq[tid]); |
395 | struct ieee80211_sub_if_data *sdata = | |
396 | vif_to_sdata(txqi->txq.vif); | |
397 | struct fq *fq = &sdata->local->fq; | |
398 | ||
399 | spin_lock_bh(&fq->lock); | |
400 | ||
401 | /* Allow only frags to be dequeued */ | |
402 | set_bit(IEEE80211_TXQ_STOP, &txqi->flags); | |
403 | ||
404 | if (!skb_queue_empty(&txqi->frags)) { | |
405 | /* Fragmented Tx is ongoing, wait for it to | |
406 | * finish. Reschedule worker to retry later. | |
407 | */ | |
408 | ||
409 | spin_unlock_bh(&fq->lock); | |
410 | spin_unlock_bh(&sta->lock); | |
411 | ||
412 | /* Give the task working on the txq a chance | |
413 | * to send out the queued frags | |
414 | */ | |
415 | synchronize_net(); | |
416 | ||
417 | mutex_unlock(&sta->ampdu_mlme.mtx); | |
418 | ||
419 | ieee80211_queue_work(&sdata->local->hw, work); | |
420 | return; | |
421 | } | |
422 | ||
423 | spin_unlock_bh(&fq->lock); | |
424 | ||
ec034b20 JB |
425 | /* |
426 | * Assign it over to the normal tid_tx array | |
427 | * where it "goes live". | |
428 | */ | |
ec034b20 JB |
429 | |
430 | sta->ampdu_mlme.tid_start_tx[tid] = NULL; | |
431 | /* could there be a race? */ | |
432 | if (sta->ampdu_mlme.tid_tx[tid]) | |
433 | kfree(tid_tx); | |
434 | else | |
435 | ieee80211_assign_tid_tx(sta, tid, tid_tx); | |
436 | spin_unlock_bh(&sta->lock); | |
67c282c0 | 437 | |
67c282c0 | 438 | ieee80211_tx_ba_session_handle_start(sta, tid); |
ec034b20 JB |
439 | continue; |
440 | } | |
e562078a | 441 | spin_unlock_bh(&sta->lock); |
ec034b20 | 442 | |
40b275b6 | 443 | tid_tx = rcu_dereference_protected_tid_tx(sta, tid); |
7a7c0a64 JB |
444 | if (!tid_tx) |
445 | continue; | |
446 | ||
39c1134c AW |
447 | if (!blocked && |
448 | test_and_clear_bit(HT_AGG_STATE_START_CB, &tid_tx->state)) | |
7a7c0a64 JB |
449 | ieee80211_start_tx_ba_cb(sta, tid, tid_tx); |
450 | if (test_and_clear_bit(HT_AGG_STATE_WANT_STOP, &tid_tx->state)) | |
67c282c0 | 451 | ___ieee80211_stop_tx_ba_session(sta, tid, |
c82c4a80 | 452 | AGG_STOP_LOCAL_REQUEST); |
7a7c0a64 JB |
453 | if (test_and_clear_bit(HT_AGG_STATE_STOP_CB, &tid_tx->state)) |
454 | ieee80211_stop_tx_ba_cb(sta, tid, tid_tx); | |
67c282c0 | 455 | } |
cfcdbde3 | 456 | mutex_unlock(&sta->ampdu_mlme.mtx); |
67c282c0 JB |
457 | } |
458 | ||
b8695a8f JB |
459 | void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, |
460 | const u8 *da, u16 tid, | |
461 | u16 initiator, u16 reason_code) | |
44d414db JB |
462 | { |
463 | struct ieee80211_local *local = sdata->local; | |
44d414db JB |
464 | struct sk_buff *skb; |
465 | struct ieee80211_mgmt *mgmt; | |
466 | u16 params; | |
467 | ||
468 | skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom); | |
d15b8459 | 469 | if (!skb) |
44d414db | 470 | return; |
44d414db JB |
471 | |
472 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
b080db58 | 473 | mgmt = skb_put_zero(skb, 24); |
44d414db | 474 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 475 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
8abd3f9b | 476 | if (sdata->vif.type == NL80211_IFTYPE_AP || |
ae2772b3 TP |
477 | sdata->vif.type == NL80211_IFTYPE_AP_VLAN || |
478 | sdata->vif.type == NL80211_IFTYPE_MESH_POINT) | |
47846c9b | 479 | memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); |
46900298 | 480 | else if (sdata->vif.type == NL80211_IFTYPE_STATION) |
bfd8403a | 481 | memcpy(mgmt->bssid, sdata->deflink.u.mgd.bssid, ETH_ALEN); |
13c40c54 AS |
482 | else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) |
483 | memcpy(mgmt->bssid, sdata->u.ibss.bssid, ETH_ALEN); | |
46900298 | 484 | |
44d414db JB |
485 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
486 | IEEE80211_STYPE_ACTION); | |
487 | ||
488 | skb_put(skb, 1 + sizeof(mgmt->u.action.u.delba)); | |
489 | ||
490 | mgmt->u.action.category = WLAN_CATEGORY_BACK; | |
491 | mgmt->u.action.u.delba.action_code = WLAN_ACTION_DELBA; | |
492 | params = (u16)(initiator << 11); /* bit 11 initiator */ | |
493 | params |= (u16)(tid << 12); /* bit 15:12 TID number */ | |
494 | ||
495 | mgmt->u.action.u.delba.params = cpu_to_le16(params); | |
496 | mgmt->u.action.u.delba.reason_code = cpu_to_le16(reason_code); | |
497 | ||
c6e13327 | 498 | ieee80211_tx_skb(sdata, skb); |
44d414db JB |
499 | } |
500 | ||
de1ede7a JB |
501 | void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, |
502 | struct sta_info *sta, | |
503 | struct ieee80211_mgmt *mgmt, size_t len) | |
504 | { | |
de1ede7a JB |
505 | u16 tid, params; |
506 | u16 initiator; | |
de1ede7a JB |
507 | |
508 | params = le16_to_cpu(mgmt->u.action.u.delba.params); | |
509 | tid = (params & IEEE80211_DELBA_PARAM_TID_MASK) >> 12; | |
510 | initiator = (params & IEEE80211_DELBA_PARAM_INITIATOR_MASK) >> 11; | |
511 | ||
bdcbd8e0 JB |
512 | ht_dbg_ratelimited(sdata, "delba from %pM (%s) tid %d reason code %d\n", |
513 | mgmt->sa, initiator ? "initiator" : "recipient", | |
514 | tid, | |
515 | le16_to_cpu(mgmt->u.action.u.delba.reason_code)); | |
de1ede7a JB |
516 | |
517 | if (initiator == WLAN_BACK_INITIATOR) | |
53f73c09 JB |
518 | __ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_INITIATOR, 0, |
519 | true); | |
a622ab72 | 520 | else |
c82c4a80 | 521 | __ieee80211_stop_tx_ba_session(sta, tid, AGG_STOP_PEER_REQUEST); |
de1ede7a | 522 | } |
0f78231b | 523 | |
57566b20 | 524 | enum nl80211_smps_mode |
525 | ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps) | |
526 | { | |
527 | switch (smps) { | |
528 | case IEEE80211_SMPS_OFF: | |
529 | return NL80211_SMPS_OFF; | |
530 | case IEEE80211_SMPS_STATIC: | |
531 | return NL80211_SMPS_STATIC; | |
532 | case IEEE80211_SMPS_DYNAMIC: | |
533 | return NL80211_SMPS_DYNAMIC; | |
534 | default: | |
535 | return NL80211_SMPS_OFF; | |
536 | } | |
537 | } | |
538 | ||
0f78231b JB |
539 | int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, |
540 | enum ieee80211_smps_mode smps, const u8 *da, | |
541 | const u8 *bssid) | |
542 | { | |
543 | struct ieee80211_local *local = sdata->local; | |
544 | struct sk_buff *skb; | |
545 | struct ieee80211_mgmt *action_frame; | |
546 | ||
547 | /* 27 = header + category + action + smps mode */ | |
548 | skb = dev_alloc_skb(27 + local->hw.extra_tx_headroom); | |
549 | if (!skb) | |
550 | return -ENOMEM; | |
551 | ||
552 | skb_reserve(skb, local->hw.extra_tx_headroom); | |
4df864c1 | 553 | action_frame = skb_put(skb, 27); |
0f78231b JB |
554 | memcpy(action_frame->da, da, ETH_ALEN); |
555 | memcpy(action_frame->sa, sdata->dev->dev_addr, ETH_ALEN); | |
556 | memcpy(action_frame->bssid, bssid, ETH_ALEN); | |
557 | action_frame->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | | |
558 | IEEE80211_STYPE_ACTION); | |
559 | action_frame->u.action.category = WLAN_CATEGORY_HT; | |
560 | action_frame->u.action.u.ht_smps.action = WLAN_HT_ACTION_SMPS; | |
561 | switch (smps) { | |
562 | case IEEE80211_SMPS_AUTOMATIC: | |
563 | case IEEE80211_SMPS_NUM_MODES: | |
564 | WARN_ON(1); | |
fc0561dc | 565 | fallthrough; |
0f78231b JB |
566 | case IEEE80211_SMPS_OFF: |
567 | action_frame->u.action.u.ht_smps.smps_control = | |
568 | WLAN_HT_SMPS_CONTROL_DISABLED; | |
569 | break; | |
570 | case IEEE80211_SMPS_STATIC: | |
571 | action_frame->u.action.u.ht_smps.smps_control = | |
572 | WLAN_HT_SMPS_CONTROL_STATIC; | |
573 | break; | |
574 | case IEEE80211_SMPS_DYNAMIC: | |
575 | action_frame->u.action.u.ht_smps.smps_control = | |
576 | WLAN_HT_SMPS_CONTROL_DYNAMIC; | |
577 | break; | |
578 | } | |
579 | ||
580 | /* we'll do more on status of this frame */ | |
581 | IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS; | |
582 | ieee80211_tx_skb(sdata, skb); | |
583 | ||
584 | return 0; | |
585 | } | |
d1f5b7a3 | 586 | |
e9aac179 | 587 | void ieee80211_request_smps(struct ieee80211_vif *vif, unsigned int link_id, |
d1f5b7a3 JB |
588 | enum ieee80211_smps_mode smps_mode) |
589 | { | |
590 | struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); | |
d8675a63 | 591 | struct ieee80211_link_data *link; |
d1f5b7a3 | 592 | |
10a35c22 | 593 | if (WARN_ON_ONCE(vif->type != NL80211_IFTYPE_STATION)) |
d1f5b7a3 JB |
594 | return; |
595 | ||
d8675a63 JB |
596 | rcu_read_lock(); |
597 | link = rcu_dereference(sdata->link[link_id]); | |
e9aac179 | 598 | if (WARN_ON(!link)) |
d8675a63 | 599 | goto out; |
10a35c22 | 600 | |
e9aac179 | 601 | if (link->u.mgd.driver_smps_mode == smps_mode) |
d8675a63 | 602 | goto out; |
e9aac179 JB |
603 | |
604 | link->u.mgd.driver_smps_mode = smps_mode; | |
1444f589 JB |
605 | wiphy_work_queue(sdata->local->hw.wiphy, |
606 | &link->u.mgd.request_smps_work); | |
d8675a63 JB |
607 | out: |
608 | rcu_read_unlock(); | |
d1f5b7a3 JB |
609 | } |
610 | /* this might change ... don't want non-open drivers using it */ | |
611 | EXPORT_SYMBOL_GPL(ieee80211_request_smps); |