1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2012-2014, 2018-2019, 2021-2023 Intel Corporation
4 * Copyright (C) 2013-2014 Intel Mobile Communications GmbH
5 * Copyright (C) 2015-2017 Intel Deutschland GmbH
6 */
7 #include <linux/kernel.h>
8 #include <linux/module.h>
9 #include <linux/slab.h>
10 #include <linux/etherdevice.h>
11
12 #include <net/mac80211.h>
13
14 #include "iwl-debug.h"
15 #include "mvm.h"
16 #include "iwl-modparams.h"
17 #include "fw/api/power.h"
18
19 #define POWER_KEEP_ALIVE_PERIOD_SEC 25
20
21 static
iwl_mvm_beacon_filter_send_cmd(struct iwl_mvm * mvm,struct iwl_beacon_filter_cmd * cmd,u32 flags)22 int iwl_mvm_beacon_filter_send_cmd(struct iwl_mvm *mvm,
23 struct iwl_beacon_filter_cmd *cmd,
24 u32 flags)
25 {
26 u16 len;
27
28 IWL_DEBUG_POWER(mvm, "ba_enable_beacon_abort is: %d\n",
29 le32_to_cpu(cmd->ba_enable_beacon_abort));
30 IWL_DEBUG_POWER(mvm, "ba_escape_timer is: %d\n",
31 le32_to_cpu(cmd->ba_escape_timer));
32 IWL_DEBUG_POWER(mvm, "bf_debug_flag is: %d\n",
33 le32_to_cpu(cmd->bf_debug_flag));
34 IWL_DEBUG_POWER(mvm, "bf_enable_beacon_filter is: %d\n",
35 le32_to_cpu(cmd->bf_enable_beacon_filter));
36 IWL_DEBUG_POWER(mvm, "bf_energy_delta is: %d\n",
37 le32_to_cpu(cmd->bf_energy_delta));
38 IWL_DEBUG_POWER(mvm, "bf_escape_timer is: %d\n",
39 le32_to_cpu(cmd->bf_escape_timer));
40 IWL_DEBUG_POWER(mvm, "bf_roaming_energy_delta is: %d\n",
41 le32_to_cpu(cmd->bf_roaming_energy_delta));
42 IWL_DEBUG_POWER(mvm, "bf_roaming_state is: %d\n",
43 le32_to_cpu(cmd->bf_roaming_state));
44 IWL_DEBUG_POWER(mvm, "bf_temp_threshold is: %d\n",
45 le32_to_cpu(cmd->bf_temp_threshold));
46 IWL_DEBUG_POWER(mvm, "bf_temp_fast_filter is: %d\n",
47 le32_to_cpu(cmd->bf_temp_fast_filter));
48 IWL_DEBUG_POWER(mvm, "bf_temp_slow_filter is: %d\n",
49 le32_to_cpu(cmd->bf_temp_slow_filter));
50 IWL_DEBUG_POWER(mvm, "bf_threshold_absolute_low is: %d, %d\n",
51 le32_to_cpu(cmd->bf_threshold_absolute_low[0]),
52 le32_to_cpu(cmd->bf_threshold_absolute_low[1]));
53
54 IWL_DEBUG_POWER(mvm, "bf_threshold_absolute_high is: %d, %d\n",
55 le32_to_cpu(cmd->bf_threshold_absolute_high[0]),
56 le32_to_cpu(cmd->bf_threshold_absolute_high[1]));
57
58 if (fw_has_api(&mvm->fw->ucode_capa,
59 IWL_UCODE_TLV_API_BEACON_FILTER_V4))
60 len = sizeof(struct iwl_beacon_filter_cmd);
61 else
62 len = offsetof(struct iwl_beacon_filter_cmd,
63 bf_threshold_absolute_low);
64
65 return iwl_mvm_send_cmd_pdu(mvm, REPLY_BEACON_FILTERING_CMD, flags,
66 len, cmd);
67 }
68
69 static
iwl_mvm_beacon_filter_set_cqm_params(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_beacon_filter_cmd * cmd)70 void iwl_mvm_beacon_filter_set_cqm_params(struct iwl_mvm *mvm,
71 struct ieee80211_vif *vif,
72 struct iwl_beacon_filter_cmd *cmd)
73 {
74 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
75
76 if (vif->bss_conf.cqm_rssi_thold) {
77 cmd->bf_energy_delta =
78 cpu_to_le32(vif->bss_conf.cqm_rssi_hyst);
79 /* fw uses an absolute value for this */
80 cmd->bf_roaming_state =
81 cpu_to_le32(-vif->bss_conf.cqm_rssi_thold);
82 }
83 cmd->ba_enable_beacon_abort = cpu_to_le32(mvmvif->bf_data.ba_enabled);
84 }
85
iwl_mvm_power_log(struct iwl_mvm * mvm,struct iwl_mac_power_cmd * cmd)86 static void iwl_mvm_power_log(struct iwl_mvm *mvm,
87 struct iwl_mac_power_cmd *cmd)
88 {
89 IWL_DEBUG_POWER(mvm,
90 "Sending power table command on mac id 0x%X for power level %d, flags = 0x%X\n",
91 cmd->id_and_color, iwlmvm_mod_params.power_scheme,
92 le16_to_cpu(cmd->flags));
93 IWL_DEBUG_POWER(mvm, "Keep alive = %u sec\n",
94 le16_to_cpu(cmd->keep_alive_seconds));
95
96 if (!(cmd->flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK))) {
97 IWL_DEBUG_POWER(mvm, "Disable power management\n");
98 return;
99 }
100
101 IWL_DEBUG_POWER(mvm, "Rx timeout = %u usec\n",
102 le32_to_cpu(cmd->rx_data_timeout));
103 IWL_DEBUG_POWER(mvm, "Tx timeout = %u usec\n",
104 le32_to_cpu(cmd->tx_data_timeout));
105 if (cmd->flags & cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK))
106 IWL_DEBUG_POWER(mvm, "DTIM periods to skip = %u\n",
107 cmd->skip_dtim_periods);
108 if (cmd->flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK))
109 IWL_DEBUG_POWER(mvm, "LP RX RSSI threshold = %u\n",
110 cmd->lprx_rssi_threshold);
111 if (cmd->flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK)) {
112 IWL_DEBUG_POWER(mvm, "uAPSD enabled\n");
113 IWL_DEBUG_POWER(mvm, "Rx timeout (uAPSD) = %u usec\n",
114 le32_to_cpu(cmd->rx_data_timeout_uapsd));
115 IWL_DEBUG_POWER(mvm, "Tx timeout (uAPSD) = %u usec\n",
116 le32_to_cpu(cmd->tx_data_timeout_uapsd));
117 IWL_DEBUG_POWER(mvm, "QNDP TID = %d\n", cmd->qndp_tid);
118 IWL_DEBUG_POWER(mvm, "ACs flags = 0x%x\n", cmd->uapsd_ac_flags);
119 IWL_DEBUG_POWER(mvm, "Max SP = %d\n", cmd->uapsd_max_sp);
120 }
121 }
122
iwl_mvm_power_configure_uapsd(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_mac_power_cmd * cmd)123 static void iwl_mvm_power_configure_uapsd(struct iwl_mvm *mvm,
124 struct ieee80211_vif *vif,
125 struct iwl_mac_power_cmd *cmd)
126 {
127 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
128 enum ieee80211_ac_numbers ac;
129 bool tid_found = false;
130
131 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status) ||
132 cmd->flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) {
133 cmd->rx_data_timeout_uapsd =
134 cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT);
135 cmd->tx_data_timeout_uapsd =
136 cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT);
137 } else {
138 cmd->rx_data_timeout_uapsd =
139 cpu_to_le32(IWL_MVM_UAPSD_RX_DATA_TIMEOUT);
140 cmd->tx_data_timeout_uapsd =
141 cpu_to_le32(IWL_MVM_UAPSD_TX_DATA_TIMEOUT);
142 }
143
144 #ifdef CONFIG_IWLWIFI_DEBUGFS
145 /* set advanced pm flag with no uapsd ACs to enable ps-poll */
146 if (mvmvif->dbgfs_pm.use_ps_poll) {
147 cmd->flags |= cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK);
148 return;
149 }
150 #endif
151
152 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_BK; ac++) {
153 if (!mvmvif->deflink.queue_params[ac].uapsd)
154 continue;
155
156 if (!test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status))
157 cmd->flags |=
158 cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK);
159
160 cmd->uapsd_ac_flags |= BIT(ac);
161
162 /* QNDP TID - the highest TID with no admission control */
163 if (!tid_found && !mvmvif->deflink.queue_params[ac].acm) {
164 tid_found = true;
165 switch (ac) {
166 case IEEE80211_AC_VO:
167 cmd->qndp_tid = 6;
168 break;
169 case IEEE80211_AC_VI:
170 cmd->qndp_tid = 5;
171 break;
172 case IEEE80211_AC_BE:
173 cmd->qndp_tid = 0;
174 break;
175 case IEEE80211_AC_BK:
176 cmd->qndp_tid = 1;
177 break;
178 }
179 }
180 }
181
182 cmd->flags |= cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK);
183
184 if (cmd->uapsd_ac_flags == (BIT(IEEE80211_AC_VO) |
185 BIT(IEEE80211_AC_VI) |
186 BIT(IEEE80211_AC_BE) |
187 BIT(IEEE80211_AC_BK))) {
188 cmd->flags |= cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK);
189 cmd->snooze_interval = cpu_to_le16(IWL_MVM_PS_SNOOZE_INTERVAL);
190 cmd->snooze_window =
191 test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status) ?
192 cpu_to_le16(IWL_MVM_WOWLAN_PS_SNOOZE_WINDOW) :
193 cpu_to_le16(IWL_MVM_PS_SNOOZE_WINDOW);
194 }
195
196 cmd->uapsd_max_sp = mvm->hw->uapsd_max_sp_len;
197
198 if (cmd->flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) {
199 cmd->heavy_tx_thld_packets =
200 IWL_MVM_PS_SNOOZE_HEAVY_TX_THLD_PACKETS;
201 cmd->heavy_rx_thld_packets =
202 IWL_MVM_PS_SNOOZE_HEAVY_RX_THLD_PACKETS;
203 } else {
204 cmd->heavy_tx_thld_packets =
205 IWL_MVM_PS_HEAVY_TX_THLD_PACKETS;
206 cmd->heavy_rx_thld_packets =
207 IWL_MVM_PS_HEAVY_RX_THLD_PACKETS;
208 }
209 cmd->heavy_tx_thld_percentage =
210 IWL_MVM_PS_HEAVY_TX_THLD_PERCENT;
211 cmd->heavy_rx_thld_percentage =
212 IWL_MVM_PS_HEAVY_RX_THLD_PERCENT;
213 }
214
iwl_mvm_p2p_standalone_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)215 static void iwl_mvm_p2p_standalone_iterator(void *_data, u8 *mac,
216 struct ieee80211_vif *vif)
217 {
218 bool *is_p2p_standalone = _data;
219
220 switch (ieee80211_vif_type_p2p(vif)) {
221 case NL80211_IFTYPE_P2P_GO:
222 case NL80211_IFTYPE_AP:
223 *is_p2p_standalone = false;
224 break;
225 case NL80211_IFTYPE_STATION:
226 if (vif->cfg.assoc)
227 *is_p2p_standalone = false;
228 break;
229
230 default:
231 break;
232 }
233 }
234
iwl_mvm_power_allow_uapsd(struct iwl_mvm * mvm,struct ieee80211_vif * vif)235 static bool iwl_mvm_power_allow_uapsd(struct iwl_mvm *mvm,
236 struct ieee80211_vif *vif)
237 {
238 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
239
240 if (ether_addr_equal(mvmvif->uapsd_misbehaving_ap_addr,
241 vif->cfg.ap_addr))
242 return false;
243
244 /*
245 * Avoid using uAPSD if P2P client is associated to GO that uses
246 * opportunistic power save. This is due to current FW limitation.
247 */
248 if (vif->p2p &&
249 (vif->bss_conf.p2p_noa_attr.oppps_ctwindow &
250 IEEE80211_P2P_OPPPS_ENABLE_BIT))
251 return false;
252
253 /*
254 * Avoid using uAPSD if client is in DCM -
255 * low latency issue in Miracast
256 */
257 if (iwl_mvm_phy_ctx_count(mvm) >= 2)
258 return false;
259
260 if (vif->p2p) {
261 /* Allow U-APSD only if p2p is stand alone */
262 bool is_p2p_standalone = true;
263
264 if (!iwl_mvm_is_p2p_scm_uapsd_supported(mvm))
265 return false;
266
267 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
268 IEEE80211_IFACE_ITER_NORMAL,
269 iwl_mvm_p2p_standalone_iterator,
270 &is_p2p_standalone);
271
272 if (!is_p2p_standalone)
273 return false;
274 }
275
276 return true;
277 }
278
iwl_mvm_power_is_radar(struct ieee80211_vif * vif)279 static bool iwl_mvm_power_is_radar(struct ieee80211_vif *vif)
280 {
281 struct ieee80211_chanctx_conf *chanctx_conf;
282 struct ieee80211_bss_conf *link_conf;
283 bool radar_detect = false;
284 unsigned int link_id;
285
286 rcu_read_lock();
287 for_each_vif_active_link(vif, link_conf, link_id) {
288 chanctx_conf = rcu_dereference(link_conf->chanctx_conf);
289 /* this happens on link switching, just ignore inactive ones */
290 if (!chanctx_conf)
291 continue;
292
293 radar_detect = !!(chanctx_conf->def.chan->flags &
294 IEEE80211_CHAN_RADAR);
295 if (radar_detect)
296 goto out;
297 }
298
299 out:
300 rcu_read_unlock();
301 return radar_detect;
302 }
303
iwl_mvm_power_config_skip_dtim(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_mac_power_cmd * cmd)304 static void iwl_mvm_power_config_skip_dtim(struct iwl_mvm *mvm,
305 struct ieee80211_vif *vif,
306 struct iwl_mac_power_cmd *cmd)
307 {
308 int dtimper = vif->bss_conf.dtim_period ?: 1;
309 int skip;
310
311 /* disable, in case we're supposed to override */
312 cmd->skip_dtim_periods = 0;
313 cmd->flags &= ~cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
314
315 if (iwl_mvm_power_is_radar(vif))
316 return;
317
318 if (dtimper >= 10)
319 return;
320
321 if (!test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) {
322 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_LP)
323 return;
324 skip = 2;
325 } else {
326 int dtimper_tu = dtimper * vif->bss_conf.beacon_int;
327
328 if (WARN_ON(!dtimper_tu))
329 return;
330 /* configure skip over dtim up to 900 TU DTIM interval */
331 skip = max_t(u8, 1, 900 / dtimper_tu);
332 }
333
334 cmd->skip_dtim_periods = skip;
335 cmd->flags |= cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
336 }
337
iwl_mvm_power_build_cmd(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_mac_power_cmd * cmd)338 static void iwl_mvm_power_build_cmd(struct iwl_mvm *mvm,
339 struct ieee80211_vif *vif,
340 struct iwl_mac_power_cmd *cmd)
341 {
342 int dtimper, bi;
343 int keep_alive;
344 struct iwl_mvm_vif *mvmvif __maybe_unused =
345 iwl_mvm_vif_from_mac80211(vif);
346
347 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
348 mvmvif->color));
349 dtimper = vif->bss_conf.dtim_period;
350 bi = vif->bss_conf.beacon_int;
351
352 /*
353 * Regardless of power management state the driver must set
354 * keep alive period. FW will use it for sending keep alive NDPs
355 * immediately after association. Check that keep alive period
356 * is at least 3 * DTIM
357 */
358 keep_alive = DIV_ROUND_UP(ieee80211_tu_to_usec(3 * dtimper * bi),
359 USEC_PER_SEC);
360 keep_alive = max(keep_alive, POWER_KEEP_ALIVE_PERIOD_SEC);
361 cmd->keep_alive_seconds = cpu_to_le16(keep_alive);
362
363 if (mvm->ps_disabled)
364 return;
365
366 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK);
367
368 if (!vif->cfg.ps || !mvmvif->pm_enabled)
369 return;
370
371 if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p &&
372 (!fw_has_capa(&mvm->fw->ucode_capa,
373 IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS) ||
374 !IWL_MVM_P2P_LOWLATENCY_PS_ENABLE))
375 return;
376
377 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK);
378
379 if (vif->bss_conf.beacon_rate &&
380 (vif->bss_conf.beacon_rate->bitrate == 10 ||
381 vif->bss_conf.beacon_rate->bitrate == 60)) {
382 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK);
383 cmd->lprx_rssi_threshold = POWER_LPRX_RSSI_THRESHOLD;
384 }
385
386 iwl_mvm_power_config_skip_dtim(mvm, vif, cmd);
387
388 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) {
389 cmd->rx_data_timeout =
390 cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT);
391 cmd->tx_data_timeout =
392 cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT);
393 } else if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p &&
394 fw_has_capa(&mvm->fw->ucode_capa,
395 IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS)) {
396 cmd->tx_data_timeout =
397 cpu_to_le32(IWL_MVM_SHORT_PS_TX_DATA_TIMEOUT);
398 cmd->rx_data_timeout =
399 cpu_to_le32(IWL_MVM_SHORT_PS_RX_DATA_TIMEOUT);
400 } else {
401 cmd->rx_data_timeout =
402 cpu_to_le32(IWL_MVM_DEFAULT_PS_RX_DATA_TIMEOUT);
403 cmd->tx_data_timeout =
404 cpu_to_le32(IWL_MVM_DEFAULT_PS_TX_DATA_TIMEOUT);
405 }
406
407 if (iwl_mvm_power_allow_uapsd(mvm, vif))
408 iwl_mvm_power_configure_uapsd(mvm, vif, cmd);
409
410 #ifdef CONFIG_IWLWIFI_DEBUGFS
411 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_KEEP_ALIVE)
412 cmd->keep_alive_seconds =
413 cpu_to_le16(mvmvif->dbgfs_pm.keep_alive_seconds);
414 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_OVER_DTIM) {
415 if (mvmvif->dbgfs_pm.skip_over_dtim)
416 cmd->flags |=
417 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
418 else
419 cmd->flags &=
420 cpu_to_le16(~POWER_FLAGS_SKIP_OVER_DTIM_MSK);
421 }
422 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_RX_DATA_TIMEOUT)
423 cmd->rx_data_timeout =
424 cpu_to_le32(mvmvif->dbgfs_pm.rx_data_timeout);
425 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_TX_DATA_TIMEOUT)
426 cmd->tx_data_timeout =
427 cpu_to_le32(mvmvif->dbgfs_pm.tx_data_timeout);
428 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS)
429 cmd->skip_dtim_periods = mvmvif->dbgfs_pm.skip_dtim_periods;
430 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_ENA) {
431 if (mvmvif->dbgfs_pm.lprx_ena)
432 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK);
433 else
434 cmd->flags &= cpu_to_le16(~POWER_FLAGS_LPRX_ENA_MSK);
435 }
436 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD)
437 cmd->lprx_rssi_threshold = mvmvif->dbgfs_pm.lprx_rssi_threshold;
438 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SNOOZE_ENABLE) {
439 if (mvmvif->dbgfs_pm.snooze_ena)
440 cmd->flags |=
441 cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK);
442 else
443 cmd->flags &=
444 cpu_to_le16(~POWER_FLAGS_SNOOZE_ENA_MSK);
445 }
446 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_UAPSD_MISBEHAVING) {
447 u16 flag = POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK;
448 if (mvmvif->dbgfs_pm.uapsd_misbehaving)
449 cmd->flags |= cpu_to_le16(flag);
450 else
451 cmd->flags &= cpu_to_le16(flag);
452 }
453 #endif /* CONFIG_IWLWIFI_DEBUGFS */
454 }
455
iwl_mvm_power_send_cmd(struct iwl_mvm * mvm,struct ieee80211_vif * vif)456 static int iwl_mvm_power_send_cmd(struct iwl_mvm *mvm,
457 struct ieee80211_vif *vif)
458 {
459 struct iwl_mac_power_cmd cmd = {};
460
461 iwl_mvm_power_build_cmd(mvm, vif, &cmd);
462 iwl_mvm_power_log(mvm, &cmd);
463 #ifdef CONFIG_IWLWIFI_DEBUGFS
464 memcpy(&iwl_mvm_vif_from_mac80211(vif)->mac_pwr_cmd, &cmd, sizeof(cmd));
465 #endif
466
467 return iwl_mvm_send_cmd_pdu(mvm, MAC_PM_POWER_TABLE, 0,
468 sizeof(cmd), &cmd);
469 }
470
iwl_mvm_power_update_device(struct iwl_mvm * mvm)471 int iwl_mvm_power_update_device(struct iwl_mvm *mvm)
472 {
473 struct iwl_device_power_cmd cmd = {
474 .flags = 0,
475 };
476
477 if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM)
478 mvm->ps_disabled = true;
479
480 if (!mvm->ps_disabled)
481 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK);
482
483 #ifdef CONFIG_IWLWIFI_DEBUGFS
484 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status) ?
485 mvm->disable_power_off_d3 : mvm->disable_power_off)
486 cmd.flags &=
487 cpu_to_le16(~DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK);
488 #endif
489 if (mvm->ext_clock_valid)
490 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_32K_CLK_VALID_MSK);
491
492 IWL_DEBUG_POWER(mvm,
493 "Sending device power command with flags = 0x%X\n",
494 cmd.flags);
495
496 return iwl_mvm_send_cmd_pdu(mvm, POWER_TABLE_CMD, 0, sizeof(cmd),
497 &cmd);
498 }
499
iwl_mvm_power_vif_assoc(struct iwl_mvm * mvm,struct ieee80211_vif * vif)500 void iwl_mvm_power_vif_assoc(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
501 {
502 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
503
504 if (!ether_addr_equal(mvmvif->uapsd_misbehaving_ap_addr,
505 vif->cfg.ap_addr))
506 eth_zero_addr(mvmvif->uapsd_misbehaving_ap_addr);
507 }
508
iwl_mvm_power_uapsd_misbehav_ap_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)509 static void iwl_mvm_power_uapsd_misbehav_ap_iterator(void *_data, u8 *mac,
510 struct ieee80211_vif *vif)
511 {
512 u8 *ap_sta_id = _data;
513 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
514 struct ieee80211_bss_conf *link_conf;
515 unsigned int link_id;
516
517 rcu_read_lock();
518 for_each_vif_active_link(vif, link_conf, link_id) {
519 struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id];
520
521 /* The ap_sta_id is not expected to change during current
522 * association so no explicit protection is needed
523 */
524 if (link_info->ap_sta_id == *ap_sta_id) {
525 ether_addr_copy(mvmvif->uapsd_misbehaving_ap_addr,
526 vif->cfg.ap_addr);
527 break;
528 }
529 }
530 rcu_read_unlock();
531 }
532
iwl_mvm_power_uapsd_misbehaving_ap_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)533 void iwl_mvm_power_uapsd_misbehaving_ap_notif(struct iwl_mvm *mvm,
534 struct iwl_rx_cmd_buffer *rxb)
535 {
536 struct iwl_rx_packet *pkt = rxb_addr(rxb);
537 struct iwl_uapsd_misbehaving_ap_notif *notif = (void *)pkt->data;
538 u8 ap_sta_id = le32_to_cpu(notif->sta_id);
539
540 ieee80211_iterate_active_interfaces_atomic(
541 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
542 iwl_mvm_power_uapsd_misbehav_ap_iterator, &ap_sta_id);
543 }
544
545 struct iwl_power_vifs {
546 struct iwl_mvm *mvm;
547 struct ieee80211_vif *bss_vif;
548 struct ieee80211_vif *p2p_vif;
549 struct ieee80211_vif *ap_vif;
550 struct ieee80211_vif *monitor_vif;
551 bool p2p_active;
552 bool bss_active;
553 bool ap_active;
554 bool monitor_active;
555 };
556
iwl_mvm_power_disable_pm_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)557 static void iwl_mvm_power_disable_pm_iterator(void *_data, u8* mac,
558 struct ieee80211_vif *vif)
559 {
560 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
561
562 mvmvif->pm_enabled = false;
563 }
564
iwl_mvm_power_ps_disabled_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)565 static void iwl_mvm_power_ps_disabled_iterator(void *_data, u8* mac,
566 struct ieee80211_vif *vif)
567 {
568 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
569 bool *disable_ps = _data;
570
571 if (iwl_mvm_vif_is_active(mvmvif))
572 *disable_ps |= mvmvif->ps_disabled;
573 }
574
iwl_mvm_power_get_vifs_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)575 static void iwl_mvm_power_get_vifs_iterator(void *_data, u8 *mac,
576 struct ieee80211_vif *vif)
577 {
578 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
579 struct iwl_power_vifs *power_iterator = _data;
580 bool active;
581
582 if (!mvmvif->uploaded)
583 return;
584
585 active = iwl_mvm_vif_is_active(mvmvif);
586
587 switch (ieee80211_vif_type_p2p(vif)) {
588 case NL80211_IFTYPE_P2P_DEVICE:
589 break;
590
591 case NL80211_IFTYPE_P2P_GO:
592 case NL80211_IFTYPE_AP:
593 /* only a single MAC of the same type */
594 WARN_ON(power_iterator->ap_vif);
595 power_iterator->ap_vif = vif;
596 if (active)
597 power_iterator->ap_active = true;
598 break;
599
600 case NL80211_IFTYPE_MONITOR:
601 /* only a single MAC of the same type */
602 WARN_ON(power_iterator->monitor_vif);
603 power_iterator->monitor_vif = vif;
604 if (active)
605 power_iterator->monitor_active = true;
606 break;
607
608 case NL80211_IFTYPE_P2P_CLIENT:
609 /* only a single MAC of the same type */
610 WARN_ON(power_iterator->p2p_vif);
611 power_iterator->p2p_vif = vif;
612 if (active)
613 power_iterator->p2p_active = true;
614 break;
615
616 case NL80211_IFTYPE_STATION:
617 power_iterator->bss_vif = vif;
618 if (active)
619 power_iterator->bss_active = true;
620 break;
621
622 default:
623 break;
624 }
625 }
626
iwl_mvm_power_set_pm(struct iwl_mvm * mvm,struct iwl_power_vifs * vifs)627 static void iwl_mvm_power_set_pm(struct iwl_mvm *mvm,
628 struct iwl_power_vifs *vifs)
629 {
630 struct iwl_mvm_vif *bss_mvmvif = NULL;
631 struct iwl_mvm_vif *p2p_mvmvif = NULL;
632 struct iwl_mvm_vif *ap_mvmvif = NULL;
633 bool client_same_channel = false;
634 bool ap_same_channel = false;
635
636 lockdep_assert_held(&mvm->mutex);
637
638 /* set pm_enable to false */
639 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
640 IEEE80211_IFACE_ITER_NORMAL,
641 iwl_mvm_power_disable_pm_iterator,
642 NULL);
643
644 if (vifs->bss_vif)
645 bss_mvmvif = iwl_mvm_vif_from_mac80211(vifs->bss_vif);
646
647 if (vifs->p2p_vif)
648 p2p_mvmvif = iwl_mvm_vif_from_mac80211(vifs->p2p_vif);
649
650 if (vifs->ap_vif)
651 ap_mvmvif = iwl_mvm_vif_from_mac80211(vifs->ap_vif);
652
653 /* don't allow PM if any TDLS stations exist */
654 if (iwl_mvm_tdls_sta_count(mvm, NULL))
655 return;
656
657 /* enable PM on bss if bss stand alone */
658 if (bss_mvmvif && vifs->bss_active && !vifs->p2p_active &&
659 !vifs->ap_active) {
660 bss_mvmvif->pm_enabled = true;
661 return;
662 }
663
664 /* enable PM on p2p if p2p stand alone */
665 if (p2p_mvmvif && vifs->p2p_active && !vifs->bss_active &&
666 !vifs->ap_active) {
667 p2p_mvmvif->pm_enabled = true;
668 return;
669 }
670
671 if (p2p_mvmvif && bss_mvmvif && vifs->bss_active && vifs->p2p_active)
672 client_same_channel =
673 iwl_mvm_have_links_same_channel(bss_mvmvif, p2p_mvmvif);
674
675 if (bss_mvmvif && ap_mvmvif && vifs->bss_active && vifs->ap_active)
676 ap_same_channel =
677 iwl_mvm_have_links_same_channel(bss_mvmvif, ap_mvmvif);
678
679 /* clients are not stand alone: enable PM if DCM */
680 if (!(client_same_channel || ap_same_channel)) {
681 if (bss_mvmvif && vifs->bss_active)
682 bss_mvmvif->pm_enabled = true;
683 if (p2p_mvmvif && vifs->p2p_active)
684 p2p_mvmvif->pm_enabled = true;
685 return;
686 }
687
688 /*
689 * There is only one channel in the system and there are only
690 * bss and p2p clients that share it
691 */
692 if (client_same_channel && !vifs->ap_active) {
693 /* share same channel*/
694 bss_mvmvif->pm_enabled = true;
695 p2p_mvmvif->pm_enabled = true;
696 }
697 }
698
699 #ifdef CONFIG_IWLWIFI_DEBUGFS
iwl_mvm_power_mac_dbgfs_read(struct iwl_mvm * mvm,struct ieee80211_vif * vif,char * buf,int bufsz)700 int iwl_mvm_power_mac_dbgfs_read(struct iwl_mvm *mvm,
701 struct ieee80211_vif *vif, char *buf,
702 int bufsz)
703 {
704 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
705 struct iwl_mac_power_cmd cmd = {};
706 int pos = 0;
707
708 mutex_lock(&mvm->mutex);
709 memcpy(&cmd, &mvmvif->mac_pwr_cmd, sizeof(cmd));
710 mutex_unlock(&mvm->mutex);
711
712 pos += scnprintf(buf+pos, bufsz-pos, "power_scheme = %d\n",
713 iwlmvm_mod_params.power_scheme);
714 pos += scnprintf(buf+pos, bufsz-pos, "flags = 0x%x\n",
715 le16_to_cpu(cmd.flags));
716 pos += scnprintf(buf+pos, bufsz-pos, "keep_alive = %d\n",
717 le16_to_cpu(cmd.keep_alive_seconds));
718
719 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK)))
720 return pos;
721
722 pos += scnprintf(buf+pos, bufsz-pos, "skip_over_dtim = %d\n",
723 (cmd.flags &
724 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK)) ? 1 : 0);
725 pos += scnprintf(buf+pos, bufsz-pos, "skip_dtim_periods = %d\n",
726 cmd.skip_dtim_periods);
727 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) {
728 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout = %d\n",
729 le32_to_cpu(cmd.rx_data_timeout));
730 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout = %d\n",
731 le32_to_cpu(cmd.tx_data_timeout));
732 }
733 if (cmd.flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK))
734 pos += scnprintf(buf+pos, bufsz-pos,
735 "lprx_rssi_threshold = %d\n",
736 cmd.lprx_rssi_threshold);
737
738 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK)))
739 return pos;
740
741 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout_uapsd = %d\n",
742 le32_to_cpu(cmd.rx_data_timeout_uapsd));
743 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout_uapsd = %d\n",
744 le32_to_cpu(cmd.tx_data_timeout_uapsd));
745 pos += scnprintf(buf+pos, bufsz-pos, "qndp_tid = %d\n", cmd.qndp_tid);
746 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_ac_flags = 0x%x\n",
747 cmd.uapsd_ac_flags);
748 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_max_sp = %d\n",
749 cmd.uapsd_max_sp);
750 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_packets = %d\n",
751 cmd.heavy_tx_thld_packets);
752 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_packets = %d\n",
753 cmd.heavy_rx_thld_packets);
754 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_percentage = %d\n",
755 cmd.heavy_tx_thld_percentage);
756 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_percentage = %d\n",
757 cmd.heavy_rx_thld_percentage);
758 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_misbehaving_enable = %d\n",
759 (cmd.flags &
760 cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK)) ?
761 1 : 0);
762
763 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)))
764 return pos;
765
766 pos += scnprintf(buf+pos, bufsz-pos, "snooze_interval = %d\n",
767 cmd.snooze_interval);
768 pos += scnprintf(buf+pos, bufsz-pos, "snooze_window = %d\n",
769 cmd.snooze_window);
770
771 return pos;
772 }
773
774 void
iwl_mvm_beacon_filter_debugfs_parameters(struct ieee80211_vif * vif,struct iwl_beacon_filter_cmd * cmd)775 iwl_mvm_beacon_filter_debugfs_parameters(struct ieee80211_vif *vif,
776 struct iwl_beacon_filter_cmd *cmd)
777 {
778 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
779 struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf;
780
781 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ENERGY_DELTA)
782 cmd->bf_energy_delta = cpu_to_le32(dbgfs_bf->bf_energy_delta);
783 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA)
784 cmd->bf_roaming_energy_delta =
785 cpu_to_le32(dbgfs_bf->bf_roaming_energy_delta);
786 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_STATE)
787 cmd->bf_roaming_state = cpu_to_le32(dbgfs_bf->bf_roaming_state);
788 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_THRESHOLD)
789 cmd->bf_temp_threshold =
790 cpu_to_le32(dbgfs_bf->bf_temp_threshold);
791 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_FAST_FILTER)
792 cmd->bf_temp_fast_filter =
793 cpu_to_le32(dbgfs_bf->bf_temp_fast_filter);
794 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_SLOW_FILTER)
795 cmd->bf_temp_slow_filter =
796 cpu_to_le32(dbgfs_bf->bf_temp_slow_filter);
797 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_DEBUG_FLAG)
798 cmd->bf_debug_flag = cpu_to_le32(dbgfs_bf->bf_debug_flag);
799 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ESCAPE_TIMER)
800 cmd->bf_escape_timer = cpu_to_le32(dbgfs_bf->bf_escape_timer);
801 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ESCAPE_TIMER)
802 cmd->ba_escape_timer = cpu_to_le32(dbgfs_bf->ba_escape_timer);
803 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT)
804 cmd->ba_enable_beacon_abort =
805 cpu_to_le32(dbgfs_bf->ba_enable_beacon_abort);
806 }
807 #endif
808
_iwl_mvm_enable_beacon_filter(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_beacon_filter_cmd * cmd,u32 cmd_flags)809 static int _iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm,
810 struct ieee80211_vif *vif,
811 struct iwl_beacon_filter_cmd *cmd,
812 u32 cmd_flags)
813 {
814 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
815 int ret;
816
817 if (mvmvif != mvm->bf_allowed_vif || !vif->bss_conf.dtim_period ||
818 vif->type != NL80211_IFTYPE_STATION || vif->p2p)
819 return 0;
820
821 iwl_mvm_beacon_filter_set_cqm_params(mvm, vif, cmd);
822 iwl_mvm_beacon_filter_debugfs_parameters(vif, cmd);
823 ret = iwl_mvm_beacon_filter_send_cmd(mvm, cmd, cmd_flags);
824
825 if (!ret)
826 mvmvif->bf_data.bf_enabled = true;
827
828 return ret;
829 }
830
iwl_mvm_enable_beacon_filter(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 flags)831 int iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm,
832 struct ieee80211_vif *vif,
833 u32 flags)
834 {
835 struct iwl_beacon_filter_cmd cmd = {
836 IWL_BF_CMD_CONFIG_DEFAULTS,
837 .bf_enable_beacon_filter = cpu_to_le32(1),
838 };
839
840 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, flags);
841 }
842
_iwl_mvm_disable_beacon_filter(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 flags)843 static int _iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm,
844 struct ieee80211_vif *vif,
845 u32 flags)
846 {
847 struct iwl_beacon_filter_cmd cmd = {};
848 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
849 int ret;
850
851 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
852 return 0;
853
854 ret = iwl_mvm_beacon_filter_send_cmd(mvm, &cmd, flags);
855
856 if (!ret)
857 mvmvif->bf_data.bf_enabled = false;
858
859 return ret;
860 }
861
iwl_mvm_disable_beacon_filter(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 flags)862 int iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm,
863 struct ieee80211_vif *vif,
864 u32 flags)
865 {
866 return _iwl_mvm_disable_beacon_filter(mvm, vif, flags);
867 }
868
iwl_mvm_power_set_ps(struct iwl_mvm * mvm)869 static int iwl_mvm_power_set_ps(struct iwl_mvm *mvm)
870 {
871 bool disable_ps;
872 int ret;
873
874 /* disable PS if CAM */
875 disable_ps = (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM);
876 /* ...or if any of the vifs require PS to be off */
877 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
878 IEEE80211_IFACE_ITER_NORMAL,
879 iwl_mvm_power_ps_disabled_iterator,
880 &disable_ps);
881
882 /* update device power state if it has changed */
883 if (mvm->ps_disabled != disable_ps) {
884 bool old_ps_disabled = mvm->ps_disabled;
885
886 mvm->ps_disabled = disable_ps;
887 ret = iwl_mvm_power_update_device(mvm);
888 if (ret) {
889 mvm->ps_disabled = old_ps_disabled;
890 return ret;
891 }
892 }
893
894 return 0;
895 }
896
iwl_mvm_power_set_ba(struct iwl_mvm * mvm,struct ieee80211_vif * vif)897 static int iwl_mvm_power_set_ba(struct iwl_mvm *mvm,
898 struct ieee80211_vif *vif)
899 {
900 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
901 struct iwl_beacon_filter_cmd cmd = {
902 IWL_BF_CMD_CONFIG_DEFAULTS,
903 .bf_enable_beacon_filter = cpu_to_le32(1),
904 };
905
906 if (!mvmvif->bf_data.bf_enabled)
907 return 0;
908
909 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status))
910 cmd.ba_escape_timer = cpu_to_le32(IWL_BA_ESCAPE_TIMER_D3);
911
912 mvmvif->bf_data.ba_enabled = !(!mvmvif->pm_enabled ||
913 mvm->ps_disabled ||
914 !vif->cfg.ps ||
915 iwl_mvm_vif_low_latency(mvmvif));
916
917 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, 0);
918 }
919
iwl_mvm_power_update_ps(struct iwl_mvm * mvm)920 int iwl_mvm_power_update_ps(struct iwl_mvm *mvm)
921 {
922 struct iwl_power_vifs vifs = {
923 .mvm = mvm,
924 };
925 int ret;
926
927 lockdep_assert_held(&mvm->mutex);
928
929 /* get vifs info */
930 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
931 IEEE80211_IFACE_ITER_NORMAL,
932 iwl_mvm_power_get_vifs_iterator, &vifs);
933
934 ret = iwl_mvm_power_set_ps(mvm);
935 if (ret)
936 return ret;
937
938 if (vifs.bss_vif)
939 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif);
940
941 return 0;
942 }
943
iwl_mvm_power_update_mac(struct iwl_mvm * mvm)944 int iwl_mvm_power_update_mac(struct iwl_mvm *mvm)
945 {
946 struct iwl_power_vifs vifs = {
947 .mvm = mvm,
948 };
949 int ret;
950
951 lockdep_assert_held(&mvm->mutex);
952
953 /* get vifs info */
954 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
955 IEEE80211_IFACE_ITER_NORMAL,
956 iwl_mvm_power_get_vifs_iterator, &vifs);
957
958 iwl_mvm_power_set_pm(mvm, &vifs);
959
960 ret = iwl_mvm_power_set_ps(mvm);
961 if (ret)
962 return ret;
963
964 if (vifs.bss_vif) {
965 ret = iwl_mvm_power_send_cmd(mvm, vifs.bss_vif);
966 if (ret)
967 return ret;
968 }
969
970 if (vifs.p2p_vif) {
971 ret = iwl_mvm_power_send_cmd(mvm, vifs.p2p_vif);
972 if (ret)
973 return ret;
974 }
975
976 if (vifs.bss_vif)
977 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif);
978
979 return 0;
980 }
981