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1 | /****************************************************************************** |
2 | * | |
3 | * This file is provided under a dual BSD/GPLv2 license. When using or | |
4 | * redistributing this file, you may do so under either license. | |
5 | * | |
6 | * GPL LICENSE SUMMARY | |
7 | * | |
8 | * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of version 2 of the GNU General Public License as | |
12 | * published by the Free Software Foundation. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, but | |
15 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
22 | * USA | |
23 | * | |
24 | * The full GNU General Public License is included in this distribution | |
25 | * in the file called LICENSE.GPL. | |
26 | * | |
27 | * Contact Information: | |
28 | * Intel Linux Wireless <ilw@linux.intel.com> | |
29 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
30 | * | |
31 | * BSD LICENSE | |
32 | * | |
33 | * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. | |
34 | * All rights reserved. | |
35 | * | |
36 | * Redistribution and use in source and binary forms, with or without | |
37 | * modification, are permitted provided that the following conditions | |
38 | * are met: | |
39 | * | |
40 | * * Redistributions of source code must retain the above copyright | |
41 | * notice, this list of conditions and the following disclaimer. | |
42 | * * Redistributions in binary form must reproduce the above copyright | |
43 | * notice, this list of conditions and the following disclaimer in | |
44 | * the documentation and/or other materials provided with the | |
45 | * distribution. | |
46 | * * Neither the name Intel Corporation nor the names of its | |
47 | * contributors may be used to endorse or promote products derived | |
48 | * from this software without specific prior written permission. | |
49 | * | |
50 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
51 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
52 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
53 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
54 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
55 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
56 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
57 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
58 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
59 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
60 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
61 | * | |
62 | *****************************************************************************/ | |
63 | #include <linux/kernel.h> | |
64 | #include <linux/slab.h> | |
65 | #include <linux/skbuff.h> | |
66 | #include <linux/netdevice.h> | |
67 | #include <linux/etherdevice.h> | |
68 | #include <net/mac80211.h> | |
69 | ||
70 | #include "iwl-op-mode.h" | |
71 | #include "iwl-io.h" | |
72 | #include "mvm.h" | |
73 | #include "sta.h" | |
74 | #include "time-event.h" | |
75 | #include "iwl-eeprom-parse.h" | |
76 | #include "fw-api-scan.h" | |
77 | #include "iwl-phy-db.h" | |
78 | ||
79 | static const struct ieee80211_iface_limit iwl_mvm_limits[] = { | |
80 | { | |
81 | .max = 1, | |
82 | .types = BIT(NL80211_IFTYPE_STATION) | | |
83 | BIT(NL80211_IFTYPE_AP), | |
84 | }, | |
85 | { | |
86 | .max = 1, | |
87 | .types = BIT(NL80211_IFTYPE_P2P_CLIENT) | | |
88 | BIT(NL80211_IFTYPE_P2P_GO), | |
89 | }, | |
90 | { | |
91 | .max = 1, | |
92 | .types = BIT(NL80211_IFTYPE_P2P_DEVICE), | |
93 | }, | |
94 | }; | |
95 | ||
96 | static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = { | |
97 | { | |
98 | .num_different_channels = 1, | |
99 | .max_interfaces = 3, | |
100 | .limits = iwl_mvm_limits, | |
101 | .n_limits = ARRAY_SIZE(iwl_mvm_limits), | |
102 | }, | |
103 | }; | |
104 | ||
105 | int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) | |
106 | { | |
107 | struct ieee80211_hw *hw = mvm->hw; | |
108 | int num_mac, ret; | |
109 | ||
110 | /* Tell mac80211 our characteristics */ | |
111 | hw->flags = IEEE80211_HW_SIGNAL_DBM | | |
112 | IEEE80211_HW_SPECTRUM_MGMT | | |
113 | IEEE80211_HW_REPORTS_TX_ACK_STATUS | | |
114 | IEEE80211_HW_QUEUE_CONTROL | | |
115 | IEEE80211_HW_WANT_MONITOR_VIF | | |
116 | IEEE80211_HW_SCAN_WHILE_IDLE | | |
117 | IEEE80211_HW_NEED_DTIM_PERIOD | | |
118 | IEEE80211_HW_SUPPORTS_PS | | |
119 | IEEE80211_HW_SUPPORTS_DYNAMIC_PS | | |
120 | IEEE80211_HW_AMPDU_AGGREGATION; | |
121 | ||
122 | hw->queues = IWL_FIRST_AMPDU_QUEUE; | |
123 | hw->offchannel_tx_hw_queue = IWL_OFFCHANNEL_QUEUE; | |
124 | hw->rate_control_algorithm = "iwl-mvm-rs"; | |
125 | ||
126 | /* | |
127 | * Enable 11w if advertised by firmware and software crypto | |
128 | * is not enabled (as the firmware will interpret some mgmt | |
129 | * packets, so enabling it with software crypto isn't safe) | |
130 | */ | |
131 | if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP && | |
132 | !iwlwifi_mod_params.sw_crypto) | |
133 | hw->flags |= IEEE80211_HW_MFP_CAPABLE; | |
134 | ||
135 | hw->sta_data_size = sizeof(struct iwl_mvm_sta); | |
136 | hw->vif_data_size = sizeof(struct iwl_mvm_vif); | |
137 | hw->chanctx_data_size = sizeof(struct iwl_mvm_phy_ctxt); | |
138 | ||
139 | hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | | |
140 | BIT(NL80211_IFTYPE_P2P_CLIENT) | | |
141 | BIT(NL80211_IFTYPE_AP) | | |
142 | BIT(NL80211_IFTYPE_P2P_GO) | | |
143 | BIT(NL80211_IFTYPE_P2P_DEVICE); | |
144 | ||
145 | hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY | | |
146 | WIPHY_FLAG_DISABLE_BEACON_HINTS | | |
147 | WIPHY_FLAG_IBSS_RSN; | |
148 | ||
149 | hw->wiphy->iface_combinations = iwl_mvm_iface_combinations; | |
150 | hw->wiphy->n_iface_combinations = | |
151 | ARRAY_SIZE(iwl_mvm_iface_combinations); | |
152 | ||
153 | hw->wiphy->max_remain_on_channel_duration = 500; | |
154 | hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL; | |
155 | ||
156 | /* Extract MAC address */ | |
157 | memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN); | |
158 | hw->wiphy->addresses = mvm->addresses; | |
159 | hw->wiphy->n_addresses = 1; | |
160 | num_mac = mvm->nvm_data->n_hw_addrs; | |
161 | if (num_mac > 1) { | |
162 | memcpy(mvm->addresses[1].addr, mvm->addresses[0].addr, | |
163 | ETH_ALEN); | |
164 | mvm->addresses[1].addr[5]++; | |
165 | hw->wiphy->n_addresses++; | |
166 | } | |
167 | ||
168 | /* we create the 802.11 header and a max-length SSID element */ | |
169 | hw->wiphy->max_scan_ie_len = | |
170 | mvm->fw->ucode_capa.max_probe_length - 24 - 34; | |
171 | hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX; | |
172 | ||
173 | if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels) | |
174 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = | |
175 | &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ]; | |
176 | if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) | |
177 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = | |
178 | &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ]; | |
179 | ||
180 | hw->wiphy->hw_version = mvm->trans->hw_id; | |
181 | ||
182 | if (iwlwifi_mod_params.power_save) | |
183 | hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; | |
184 | else | |
185 | hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; | |
186 | ||
187 | hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN | | |
188 | NL80211_FEATURE_P2P_GO_OPPPS; | |
189 | ||
190 | mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; | |
191 | ||
192 | #ifdef CONFIG_PM_SLEEP | |
193 | if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len && | |
194 | mvm->trans->ops->d3_suspend && | |
195 | mvm->trans->ops->d3_resume && | |
196 | device_can_wakeup(mvm->trans->dev)) { | |
197 | hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT | | |
198 | WIPHY_WOWLAN_DISCONNECT | | |
199 | WIPHY_WOWLAN_EAP_IDENTITY_REQ | | |
200 | WIPHY_WOWLAN_RFKILL_RELEASE; | |
201 | if (!iwlwifi_mod_params.sw_crypto) | |
202 | hw->wiphy->wowlan.flags |= | |
203 | WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | | |
204 | WIPHY_WOWLAN_GTK_REKEY_FAILURE | | |
205 | WIPHY_WOWLAN_4WAY_HANDSHAKE; | |
206 | ||
207 | hw->wiphy->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS; | |
208 | hw->wiphy->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN; | |
209 | hw->wiphy->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN; | |
210 | } | |
211 | #endif | |
212 | ||
213 | ret = iwl_mvm_leds_init(mvm); | |
214 | if (ret) | |
215 | return ret; | |
216 | ||
217 | return ieee80211_register_hw(mvm->hw); | |
218 | } | |
219 | ||
220 | static void iwl_mvm_mac_tx(struct ieee80211_hw *hw, | |
221 | struct ieee80211_tx_control *control, | |
222 | struct sk_buff *skb) | |
223 | { | |
224 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
225 | ||
226 | if (test_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status)) { | |
227 | IWL_DEBUG_DROP(mvm, "Dropping - RF KILL\n"); | |
228 | goto drop; | |
229 | } | |
230 | ||
231 | if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_OFFCHANNEL_QUEUE && | |
232 | !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status)) | |
233 | goto drop; | |
234 | ||
235 | if (control->sta) { | |
236 | if (iwl_mvm_tx_skb(mvm, skb, control->sta)) | |
237 | goto drop; | |
238 | return; | |
239 | } | |
240 | ||
241 | if (iwl_mvm_tx_skb_non_sta(mvm, skb)) | |
242 | goto drop; | |
243 | return; | |
244 | drop: | |
245 | ieee80211_free_txskb(hw, skb); | |
246 | } | |
247 | ||
248 | static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw, | |
249 | struct ieee80211_vif *vif, | |
250 | enum ieee80211_ampdu_mlme_action action, | |
251 | struct ieee80211_sta *sta, u16 tid, | |
252 | u16 *ssn, u8 buf_size) | |
253 | { | |
254 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
255 | int ret; | |
256 | ||
257 | IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n", | |
258 | sta->addr, tid, action); | |
259 | ||
260 | if (!(mvm->nvm_data->sku_cap_11n_enable)) | |
261 | return -EACCES; | |
262 | ||
263 | mutex_lock(&mvm->mutex); | |
264 | ||
265 | switch (action) { | |
266 | case IEEE80211_AMPDU_RX_START: | |
267 | if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG) { | |
268 | ret = -EINVAL; | |
269 | break; | |
270 | } | |
271 | ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true); | |
272 | break; | |
273 | case IEEE80211_AMPDU_RX_STOP: | |
274 | ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false); | |
275 | break; | |
276 | case IEEE80211_AMPDU_TX_START: | |
277 | ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn); | |
278 | break; | |
279 | case IEEE80211_AMPDU_TX_STOP_CONT: | |
280 | case IEEE80211_AMPDU_TX_STOP_FLUSH: | |
281 | case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: | |
282 | ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid); | |
283 | break; | |
284 | case IEEE80211_AMPDU_TX_OPERATIONAL: | |
285 | ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size); | |
286 | break; | |
287 | default: | |
288 | WARN_ON_ONCE(1); | |
289 | ret = -EINVAL; | |
290 | break; | |
291 | } | |
292 | mutex_unlock(&mvm->mutex); | |
293 | ||
294 | return ret; | |
295 | } | |
296 | ||
297 | static void iwl_mvm_cleanup_iterator(void *data, u8 *mac, | |
298 | struct ieee80211_vif *vif) | |
299 | { | |
300 | struct iwl_mvm *mvm = data; | |
301 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
302 | ||
303 | mvmvif->uploaded = false; | |
304 | mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; | |
305 | ||
306 | /* does this make sense at all? */ | |
307 | mvmvif->color++; | |
308 | ||
309 | spin_lock_bh(&mvm->time_event_lock); | |
310 | iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data); | |
311 | spin_unlock_bh(&mvm->time_event_lock); | |
312 | ||
313 | if (vif->type != NL80211_IFTYPE_P2P_DEVICE) | |
314 | mvmvif->phy_ctxt = NULL; | |
315 | } | |
316 | ||
317 | static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) | |
318 | { | |
319 | iwl_trans_stop_device(mvm->trans); | |
320 | iwl_trans_stop_hw(mvm->trans, false); | |
321 | ||
322 | mvm->scan_status = IWL_MVM_SCAN_NONE; | |
323 | ||
324 | /* just in case one was running */ | |
325 | ieee80211_remain_on_channel_expired(mvm->hw); | |
326 | ||
327 | ieee80211_iterate_active_interfaces_atomic( | |
328 | mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
329 | iwl_mvm_cleanup_iterator, mvm); | |
330 | ||
331 | memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); | |
332 | memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained)); | |
333 | ||
334 | ieee80211_wake_queues(mvm->hw); | |
335 | ||
336 | mvm->vif_count = 0; | |
337 | } | |
338 | ||
339 | static int iwl_mvm_mac_start(struct ieee80211_hw *hw) | |
340 | { | |
341 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
342 | int ret; | |
343 | ||
344 | mutex_lock(&mvm->mutex); | |
345 | ||
346 | /* Clean up some internal and mac80211 state on restart */ | |
347 | if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) | |
348 | iwl_mvm_restart_cleanup(mvm); | |
349 | ||
350 | ret = iwl_mvm_up(mvm); | |
351 | mutex_unlock(&mvm->mutex); | |
352 | ||
353 | return ret; | |
354 | } | |
355 | ||
356 | static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw) | |
357 | { | |
358 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
359 | int ret; | |
360 | ||
361 | mutex_lock(&mvm->mutex); | |
362 | ||
363 | clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); | |
364 | ret = iwl_mvm_update_quotas(mvm, NULL); | |
365 | if (ret) | |
366 | IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n", | |
367 | ret); | |
368 | ||
369 | mutex_unlock(&mvm->mutex); | |
370 | } | |
371 | ||
372 | static void iwl_mvm_mac_stop(struct ieee80211_hw *hw) | |
373 | { | |
374 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
375 | ||
376 | flush_work(&mvm->async_handlers_wk); | |
377 | ||
378 | mutex_lock(&mvm->mutex); | |
379 | /* async_handlers_wk is now blocked */ | |
380 | ||
381 | /* | |
382 | * The work item could be running or queued if the | |
383 | * ROC time event stops just as we get here. | |
384 | */ | |
385 | cancel_work_sync(&mvm->roc_done_wk); | |
386 | ||
387 | iwl_trans_stop_device(mvm->trans); | |
388 | iwl_trans_stop_hw(mvm->trans, false); | |
389 | ||
390 | iwl_mvm_async_handlers_purge(mvm); | |
391 | /* async_handlers_list is empty and will stay empty: HW is stopped */ | |
392 | ||
393 | /* the fw is stopped, the aux sta is dead: clean up driver state */ | |
394 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); | |
395 | ||
396 | mutex_unlock(&mvm->mutex); | |
397 | ||
398 | /* | |
399 | * The worker might have been waiting for the mutex, let it run and | |
400 | * discover that its list is now empty. | |
401 | */ | |
402 | cancel_work_sync(&mvm->async_handlers_wk); | |
403 | } | |
404 | ||
405 | static void iwl_mvm_pm_disable_iterator(void *data, u8 *mac, | |
406 | struct ieee80211_vif *vif) | |
407 | { | |
408 | struct iwl_mvm *mvm = data; | |
409 | int ret; | |
410 | ||
411 | ret = iwl_mvm_power_disable(mvm, vif); | |
412 | if (ret) | |
413 | IWL_ERR(mvm, "failed to disable power management\n"); | |
414 | } | |
415 | ||
416 | static void iwl_mvm_power_update_iterator(void *data, u8 *mac, | |
417 | struct ieee80211_vif *vif) | |
418 | { | |
419 | struct iwl_mvm *mvm = data; | |
420 | ||
421 | iwl_mvm_power_update_mode(mvm, vif); | |
422 | } | |
423 | ||
424 | static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw, | |
425 | struct ieee80211_vif *vif) | |
426 | { | |
427 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
428 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
429 | int ret; | |
430 | ||
431 | /* | |
432 | * Not much to do here. The stack will not allow interface | |
433 | * types or combinations that we didn't advertise, so we | |
434 | * don't really have to check the types. | |
435 | */ | |
436 | ||
437 | mutex_lock(&mvm->mutex); | |
438 | ||
439 | /* Allocate resources for the MAC context, and add it the the fw */ | |
440 | ret = iwl_mvm_mac_ctxt_init(mvm, vif); | |
441 | if (ret) | |
442 | goto out_unlock; | |
443 | ||
444 | /* | |
445 | * The AP binding flow can be done only after the beacon | |
446 | * template is configured (which happens only in the mac80211 | |
447 | * start_ap() flow), and adding the broadcast station can happen | |
448 | * only after the binding. | |
449 | * In addition, since modifying the MAC before adding a bcast | |
450 | * station is not allowed by the FW, delay the adding of MAC context to | |
451 | * the point where we can also add the bcast station. | |
452 | * In short: there's not much we can do at this point, other than | |
453 | * allocating resources :) | |
454 | */ | |
455 | if (vif->type == NL80211_IFTYPE_AP) { | |
456 | u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif); | |
457 | ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, | |
458 | qmask); | |
459 | if (ret) { | |
460 | IWL_ERR(mvm, "Failed to allocate bcast sta\n"); | |
461 | goto out_release; | |
462 | } | |
463 | ||
464 | goto out_unlock; | |
465 | } | |
466 | ||
467 | /* | |
468 | * TODO: remove this temporary code. | |
469 | * Currently MVM FW supports power management only on single MAC. | |
470 | * Iterate and disable PM on all active interfaces. | |
471 | * Note: the method below does not count the new interface being added | |
472 | * at this moment. | |
473 | */ | |
474 | mvm->vif_count++; | |
475 | if (mvm->vif_count > 1) { | |
476 | IWL_DEBUG_MAC80211(mvm, | |
477 | "Disable power on existing interfaces\n"); | |
478 | ieee80211_iterate_active_interfaces( | |
479 | mvm->hw, | |
480 | IEEE80211_IFACE_ITER_NORMAL, | |
481 | iwl_mvm_pm_disable_iterator, mvm); | |
482 | } | |
483 | ||
484 | ret = iwl_mvm_mac_ctxt_add(mvm, vif); | |
485 | if (ret) | |
486 | goto out_release; | |
487 | ||
488 | /* | |
489 | * Update power state on the new interface. Admittedly, based on | |
490 | * mac80211 logics this power update will disable power management | |
491 | */ | |
492 | iwl_mvm_power_update_mode(mvm, vif); | |
493 | ||
494 | /* | |
495 | * P2P_DEVICE interface does not have a channel context assigned to it, | |
496 | * so a dedicated PHY context is allocated to it and the corresponding | |
497 | * MAC context is bound to it at this stage. | |
498 | */ | |
499 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
500 | struct ieee80211_channel *chan; | |
501 | struct cfg80211_chan_def chandef; | |
502 | ||
503 | mvmvif->phy_ctxt = &mvm->phy_ctxt_roc; | |
504 | ||
505 | /* | |
506 | * The channel used here isn't relevant as it's | |
507 | * going to be overwritten as part of the ROC flow. | |
508 | * For now use the first channel we have. | |
509 | */ | |
510 | chan = &mvm->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels[0]; | |
511 | cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_NO_HT); | |
512 | ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, | |
513 | &chandef, 1, 1); | |
514 | if (ret) | |
515 | goto out_remove_mac; | |
516 | ||
517 | ret = iwl_mvm_binding_add_vif(mvm, vif); | |
518 | if (ret) | |
519 | goto out_remove_phy; | |
520 | ||
521 | ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta); | |
522 | if (ret) | |
523 | goto out_unbind; | |
524 | ||
525 | /* Save a pointer to p2p device vif, so it can later be used to | |
526 | * update the p2p device MAC when a GO is started/stopped */ | |
527 | mvm->p2p_device_vif = vif; | |
528 | } | |
529 | ||
530 | goto out_unlock; | |
531 | ||
532 | out_unbind: | |
533 | iwl_mvm_binding_remove_vif(mvm, vif); | |
534 | out_remove_phy: | |
535 | iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt); | |
536 | out_remove_mac: | |
537 | mvmvif->phy_ctxt = NULL; | |
538 | iwl_mvm_mac_ctxt_remove(mvm, vif); | |
539 | out_release: | |
540 | /* | |
541 | * TODO: remove this temporary code. | |
542 | * Currently MVM FW supports power management only on single MAC. | |
543 | * Check if only one additional interface remains after rereasing | |
544 | * current one. Update power mode on the remaining interface. | |
545 | */ | |
546 | mvm->vif_count--; | |
547 | IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n", | |
548 | mvm->vif_count); | |
549 | if (mvm->vif_count == 1) { | |
550 | ieee80211_iterate_active_interfaces( | |
551 | mvm->hw, IEEE80211_IFACE_ITER_NORMAL, | |
552 | iwl_mvm_power_update_iterator, mvm); | |
553 | } | |
554 | iwl_mvm_mac_ctxt_release(mvm, vif); | |
555 | out_unlock: | |
556 | mutex_unlock(&mvm->mutex); | |
557 | ||
558 | return ret; | |
559 | } | |
560 | ||
561 | static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw, | |
562 | struct ieee80211_vif *vif) | |
563 | { | |
564 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
565 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
566 | u32 tfd_msk = 0, ac; | |
567 | ||
568 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
569 | if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE) | |
570 | tfd_msk |= BIT(vif->hw_queue[ac]); | |
571 | ||
572 | if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE) | |
573 | tfd_msk |= BIT(vif->cab_queue); | |
574 | ||
575 | if (tfd_msk) { | |
576 | mutex_lock(&mvm->mutex); | |
577 | iwl_mvm_flush_tx_path(mvm, tfd_msk, true); | |
578 | mutex_unlock(&mvm->mutex); | |
579 | } | |
580 | ||
581 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
582 | /* | |
583 | * Flush the ROC worker which will flush the OFFCHANNEL queue. | |
584 | * We assume here that all the packets sent to the OFFCHANNEL | |
585 | * queue are sent in ROC session. | |
586 | */ | |
587 | flush_work(&mvm->roc_done_wk); | |
588 | } else { | |
589 | /* | |
590 | * By now, all the AC queues are empty. The AGG queues are | |
591 | * empty too. We already got all the Tx responses for all the | |
592 | * packets in the queues. The drain work can have been | |
593 | * triggered. Flush it. This work item takes the mutex, so kill | |
594 | * it before we take it. | |
595 | */ | |
596 | flush_work(&mvm->sta_drained_wk); | |
597 | } | |
598 | ||
599 | mutex_lock(&mvm->mutex); | |
600 | ||
601 | /* | |
602 | * For AP/GO interface, the tear down of the resources allocated to the | |
603 | * interface should be handled as part of the bss_info_changed flow. | |
604 | */ | |
605 | if (vif->type == NL80211_IFTYPE_AP) { | |
606 | iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); | |
607 | goto out_release; | |
608 | } | |
609 | ||
610 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
611 | mvm->p2p_device_vif = NULL; | |
612 | iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta); | |
613 | iwl_mvm_binding_remove_vif(mvm, vif); | |
614 | iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt); | |
615 | mvmvif->phy_ctxt = NULL; | |
616 | } | |
617 | ||
618 | /* | |
619 | * TODO: remove this temporary code. | |
620 | * Currently MVM FW supports power management only on single MAC. | |
621 | * Check if only one additional interface remains after removing | |
622 | * current one. Update power mode on the remaining interface. | |
623 | */ | |
624 | if (mvm->vif_count) | |
625 | mvm->vif_count--; | |
626 | IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n", | |
627 | mvm->vif_count); | |
628 | if (mvm->vif_count == 1) { | |
629 | ieee80211_iterate_active_interfaces( | |
630 | mvm->hw, IEEE80211_IFACE_ITER_NORMAL, | |
631 | iwl_mvm_power_update_iterator, mvm); | |
632 | } | |
633 | ||
634 | iwl_mvm_mac_ctxt_remove(mvm, vif); | |
635 | ||
636 | out_release: | |
637 | iwl_mvm_mac_ctxt_release(mvm, vif); | |
638 | mutex_unlock(&mvm->mutex); | |
639 | } | |
640 | ||
641 | static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed) | |
642 | { | |
643 | return 0; | |
644 | } | |
645 | ||
646 | static void iwl_mvm_configure_filter(struct ieee80211_hw *hw, | |
647 | unsigned int changed_flags, | |
648 | unsigned int *total_flags, | |
649 | u64 multicast) | |
650 | { | |
651 | *total_flags = 0; | |
652 | } | |
653 | ||
654 | static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm, | |
655 | struct ieee80211_vif *vif, | |
656 | struct ieee80211_bss_conf *bss_conf, | |
657 | u32 changes) | |
658 | { | |
659 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
660 | int ret; | |
661 | ||
662 | ret = iwl_mvm_mac_ctxt_changed(mvm, vif); | |
663 | if (ret) | |
664 | IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); | |
665 | ||
666 | if (changes & BSS_CHANGED_ASSOC) { | |
667 | if (bss_conf->assoc) { | |
668 | /* add quota for this interface */ | |
669 | ret = iwl_mvm_update_quotas(mvm, vif); | |
670 | if (ret) { | |
671 | IWL_ERR(mvm, "failed to update quotas\n"); | |
672 | return; | |
673 | } | |
674 | iwl_mvm_remove_time_event(mvm, mvmvif, | |
675 | &mvmvif->time_event_data); | |
676 | } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { | |
677 | /* remove AP station now that the MAC is unassoc */ | |
678 | ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id); | |
679 | if (ret) | |
680 | IWL_ERR(mvm, "failed to remove AP station\n"); | |
681 | mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; | |
682 | /* remove quota for this interface */ | |
683 | ret = iwl_mvm_update_quotas(mvm, NULL); | |
684 | if (ret) | |
685 | IWL_ERR(mvm, "failed to update quotas\n"); | |
686 | } | |
687 | } else if (changes & BSS_CHANGED_PS) { | |
688 | /* | |
689 | * TODO: remove this temporary code. | |
690 | * Currently MVM FW supports power management only on single | |
691 | * MAC. Avoid power mode update if more than one interface | |
692 | * is active. | |
693 | */ | |
694 | IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n", | |
695 | mvm->vif_count); | |
696 | if (mvm->vif_count == 1) { | |
697 | ret = iwl_mvm_power_update_mode(mvm, vif); | |
698 | if (ret) | |
699 | IWL_ERR(mvm, "failed to update power mode\n"); | |
700 | } | |
701 | } | |
702 | } | |
703 | ||
704 | static int iwl_mvm_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif) | |
705 | { | |
706 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
707 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
708 | int ret; | |
709 | ||
710 | mutex_lock(&mvm->mutex); | |
711 | ||
712 | /* Send the beacon template */ | |
713 | ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif); | |
714 | if (ret) | |
715 | goto out_unlock; | |
716 | ||
717 | /* Add the mac context */ | |
718 | ret = iwl_mvm_mac_ctxt_add(mvm, vif); | |
719 | if (ret) | |
720 | goto out_unlock; | |
721 | ||
722 | /* Perform the binding */ | |
723 | ret = iwl_mvm_binding_add_vif(mvm, vif); | |
724 | if (ret) | |
725 | goto out_remove; | |
726 | ||
727 | mvmvif->ap_active = true; | |
728 | ||
729 | /* Send the bcast station. At this stage the TBTT and DTIM time events | |
730 | * are added and applied to the scheduler */ | |
731 | ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta); | |
732 | if (ret) | |
733 | goto out_unbind; | |
734 | ||
735 | ret = iwl_mvm_update_quotas(mvm, vif); | |
736 | if (ret) | |
737 | goto out_rm_bcast; | |
738 | ||
739 | /* Need to update the P2P Device MAC */ | |
740 | if (vif->p2p && mvm->p2p_device_vif) | |
741 | iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif); | |
742 | ||
743 | mutex_unlock(&mvm->mutex); | |
744 | return 0; | |
745 | ||
746 | out_rm_bcast: | |
747 | iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta); | |
748 | out_unbind: | |
749 | iwl_mvm_binding_remove_vif(mvm, vif); | |
750 | out_remove: | |
751 | iwl_mvm_mac_ctxt_remove(mvm, vif); | |
752 | out_unlock: | |
753 | mutex_unlock(&mvm->mutex); | |
754 | return ret; | |
755 | } | |
756 | ||
757 | static void iwl_mvm_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif) | |
758 | { | |
759 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
760 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
761 | ||
762 | mutex_lock(&mvm->mutex); | |
763 | ||
764 | mvmvif->ap_active = false; | |
765 | ||
766 | /* Need to update the P2P Device MAC */ | |
767 | if (vif->p2p && mvm->p2p_device_vif) | |
768 | iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif); | |
769 | ||
770 | iwl_mvm_update_quotas(mvm, NULL); | |
771 | iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta); | |
772 | iwl_mvm_binding_remove_vif(mvm, vif); | |
773 | iwl_mvm_mac_ctxt_remove(mvm, vif); | |
774 | ||
775 | mutex_unlock(&mvm->mutex); | |
776 | } | |
777 | ||
778 | static void iwl_mvm_bss_info_changed_ap(struct iwl_mvm *mvm, | |
779 | struct ieee80211_vif *vif, | |
780 | struct ieee80211_bss_conf *bss_conf, | |
781 | u32 changes) | |
782 | { | |
783 | /* Need to send a new beacon template to the FW */ | |
784 | if (changes & BSS_CHANGED_BEACON) { | |
785 | if (iwl_mvm_mac_ctxt_beacon_changed(mvm, vif)) | |
786 | IWL_WARN(mvm, "Failed updating beacon data\n"); | |
787 | } | |
788 | } | |
789 | ||
790 | static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw, | |
791 | struct ieee80211_vif *vif, | |
792 | struct ieee80211_bss_conf *bss_conf, | |
793 | u32 changes) | |
794 | { | |
795 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
796 | ||
797 | mutex_lock(&mvm->mutex); | |
798 | ||
799 | switch (vif->type) { | |
800 | case NL80211_IFTYPE_STATION: | |
801 | iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes); | |
802 | break; | |
803 | case NL80211_IFTYPE_AP: | |
804 | iwl_mvm_bss_info_changed_ap(mvm, vif, bss_conf, changes); | |
805 | break; | |
806 | default: | |
807 | /* shouldn't happen */ | |
808 | WARN_ON_ONCE(1); | |
809 | } | |
810 | ||
811 | mutex_unlock(&mvm->mutex); | |
812 | } | |
813 | ||
814 | static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, | |
815 | struct ieee80211_vif *vif, | |
816 | struct cfg80211_scan_request *req) | |
817 | { | |
818 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
819 | int ret; | |
820 | ||
821 | if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS) | |
822 | return -EINVAL; | |
823 | ||
824 | mutex_lock(&mvm->mutex); | |
825 | ||
826 | if (mvm->scan_status == IWL_MVM_SCAN_NONE) | |
827 | ret = iwl_mvm_scan_request(mvm, vif, req); | |
828 | else | |
829 | ret = -EBUSY; | |
830 | ||
831 | mutex_unlock(&mvm->mutex); | |
832 | ||
833 | return ret; | |
834 | } | |
835 | ||
836 | static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw, | |
837 | struct ieee80211_vif *vif) | |
838 | { | |
839 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
840 | ||
841 | mutex_lock(&mvm->mutex); | |
842 | ||
843 | iwl_mvm_cancel_scan(mvm); | |
844 | ||
845 | mutex_unlock(&mvm->mutex); | |
846 | } | |
847 | ||
848 | static void | |
849 | iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw, | |
850 | struct ieee80211_sta *sta, u16 tid, | |
851 | int num_frames, | |
852 | enum ieee80211_frame_release_type reason, | |
853 | bool more_data) | |
854 | { | |
855 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
856 | struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv; | |
857 | ||
858 | /* TODO: how do we tell the fw to send frames for a specific TID */ | |
859 | ||
860 | /* | |
861 | * The fw will send EOSP notification when the last frame will be | |
862 | * transmitted. | |
863 | */ | |
864 | iwl_mvm_sta_modify_sleep_tx_count(mvm, mvmsta->sta_id, reason, | |
865 | num_frames); | |
866 | } | |
867 | ||
868 | static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, | |
869 | struct ieee80211_vif *vif, | |
870 | enum sta_notify_cmd cmd, | |
871 | struct ieee80211_sta *sta) | |
872 | { | |
873 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
874 | struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv; | |
875 | ||
876 | switch (cmd) { | |
877 | case STA_NOTIFY_SLEEP: | |
878 | if (atomic_read(&mvmsta->pending_frames) > 0) | |
879 | ieee80211_sta_block_awake(hw, sta, true); | |
880 | /* | |
881 | * The fw updates the STA to be asleep. Tx packets on the Tx | |
882 | * queues to this station will not be transmitted. The fw will | |
883 | * send a Tx response with TX_STATUS_FAIL_DEST_PS. | |
884 | */ | |
885 | break; | |
886 | case STA_NOTIFY_AWAKE: | |
887 | if (WARN_ON(mvmsta->sta_id == IWL_INVALID_STATION)) | |
888 | break; | |
889 | iwl_mvm_sta_modify_ps_wake(mvm, mvmsta->sta_id); | |
890 | break; | |
891 | default: | |
892 | break; | |
893 | } | |
894 | } | |
895 | ||
896 | static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw, | |
897 | struct ieee80211_vif *vif, | |
898 | struct ieee80211_sta *sta, | |
899 | enum ieee80211_sta_state old_state, | |
900 | enum ieee80211_sta_state new_state) | |
901 | { | |
902 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
903 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
904 | int ret; | |
905 | ||
906 | IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n", | |
907 | sta->addr, old_state, new_state); | |
908 | ||
909 | /* this would be a mac80211 bug ... but don't crash */ | |
910 | if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) | |
911 | return -EINVAL; | |
912 | ||
913 | /* if a STA is being removed, reuse its ID */ | |
914 | flush_work(&mvm->sta_drained_wk); | |
915 | ||
916 | mutex_lock(&mvm->mutex); | |
917 | if (old_state == IEEE80211_STA_NOTEXIST && | |
918 | new_state == IEEE80211_STA_NONE) { | |
919 | ret = iwl_mvm_add_sta(mvm, vif, sta); | |
920 | } else if (old_state == IEEE80211_STA_NONE && | |
921 | new_state == IEEE80211_STA_AUTH) { | |
922 | ret = 0; | |
923 | } else if (old_state == IEEE80211_STA_AUTH && | |
924 | new_state == IEEE80211_STA_ASSOC) { | |
925 | iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band); | |
926 | ret = 0; | |
927 | } else if (old_state == IEEE80211_STA_ASSOC && | |
928 | new_state == IEEE80211_STA_AUTHORIZED) { | |
929 | ret = 0; | |
930 | } else if (old_state == IEEE80211_STA_AUTHORIZED && | |
931 | new_state == IEEE80211_STA_ASSOC) { | |
932 | ret = 0; | |
933 | } else if (old_state == IEEE80211_STA_ASSOC && | |
934 | new_state == IEEE80211_STA_AUTH) { | |
935 | ret = 0; | |
936 | } else if (old_state == IEEE80211_STA_AUTH && | |
937 | new_state == IEEE80211_STA_NONE) { | |
938 | ret = 0; | |
939 | } else if (old_state == IEEE80211_STA_NONE && | |
940 | new_state == IEEE80211_STA_NOTEXIST) { | |
941 | ret = iwl_mvm_rm_sta(mvm, vif, sta); | |
942 | } else { | |
943 | ret = -EIO; | |
944 | } | |
945 | mutex_unlock(&mvm->mutex); | |
946 | ||
947 | return ret; | |
948 | } | |
949 | ||
950 | static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value) | |
951 | { | |
952 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
953 | ||
954 | mvm->rts_threshold = value; | |
955 | ||
956 | return 0; | |
957 | } | |
958 | ||
959 | static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw, | |
960 | struct ieee80211_vif *vif, u16 ac, | |
961 | const struct ieee80211_tx_queue_params *params) | |
962 | { | |
963 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
964 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
965 | ||
966 | mvmvif->queue_params[ac] = *params; | |
967 | ||
968 | /* | |
969 | * No need to update right away, we'll get BSS_CHANGED_QOS | |
970 | * The exception is P2P_DEVICE interface which needs immediate update. | |
971 | */ | |
972 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
973 | int ret; | |
974 | ||
975 | mutex_lock(&mvm->mutex); | |
976 | ret = iwl_mvm_mac_ctxt_changed(mvm, vif); | |
977 | mutex_unlock(&mvm->mutex); | |
978 | return ret; | |
979 | } | |
980 | return 0; | |
981 | } | |
982 | ||
983 | static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw, | |
984 | struct ieee80211_vif *vif) | |
985 | { | |
986 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
987 | u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS, | |
988 | 200 + vif->bss_conf.beacon_int); | |
989 | u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS, | |
990 | 100 + vif->bss_conf.beacon_int); | |
991 | ||
992 | if (WARN_ON_ONCE(vif->bss_conf.assoc)) | |
993 | return; | |
994 | ||
995 | mutex_lock(&mvm->mutex); | |
996 | /* Try really hard to protect the session and hear a beacon */ | |
997 | iwl_mvm_protect_session(mvm, vif, duration, min_duration); | |
998 | mutex_unlock(&mvm->mutex); | |
999 | } | |
1000 | ||
1001 | static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, | |
1002 | enum set_key_cmd cmd, | |
1003 | struct ieee80211_vif *vif, | |
1004 | struct ieee80211_sta *sta, | |
1005 | struct ieee80211_key_conf *key) | |
1006 | { | |
1007 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1008 | int ret; | |
1009 | ||
1010 | if (iwlwifi_mod_params.sw_crypto) { | |
1011 | IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n"); | |
1012 | return -EOPNOTSUPP; | |
1013 | } | |
1014 | ||
1015 | switch (key->cipher) { | |
1016 | case WLAN_CIPHER_SUITE_TKIP: | |
1017 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; | |
1018 | /* fall-through */ | |
1019 | case WLAN_CIPHER_SUITE_CCMP: | |
1020 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; | |
1021 | break; | |
1022 | case WLAN_CIPHER_SUITE_AES_CMAC: | |
1023 | WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE)); | |
1024 | break; | |
1025 | case WLAN_CIPHER_SUITE_WEP40: | |
1026 | case WLAN_CIPHER_SUITE_WEP104: | |
1027 | /* | |
1028 | * Support for TX only, at least for now, so accept | |
1029 | * the key and do nothing else. Then mac80211 will | |
1030 | * pass it for TX but we don't have to use it for RX. | |
1031 | */ | |
1032 | return 0; | |
1033 | default: | |
1034 | return -EOPNOTSUPP; | |
1035 | } | |
1036 | ||
1037 | mutex_lock(&mvm->mutex); | |
1038 | ||
1039 | switch (cmd) { | |
1040 | case SET_KEY: | |
1041 | IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n"); | |
1042 | ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false); | |
1043 | if (ret) { | |
1044 | IWL_WARN(mvm, "set key failed\n"); | |
1045 | /* | |
1046 | * can't add key for RX, but we don't need it | |
1047 | * in the device for TX so still return 0 | |
1048 | */ | |
1049 | ret = 0; | |
1050 | } | |
1051 | ||
1052 | break; | |
1053 | case DISABLE_KEY: | |
1054 | IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n"); | |
1055 | ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key); | |
1056 | break; | |
1057 | default: | |
1058 | ret = -EINVAL; | |
1059 | } | |
1060 | ||
1061 | mutex_unlock(&mvm->mutex); | |
1062 | return ret; | |
1063 | } | |
1064 | ||
1065 | static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw, | |
1066 | struct ieee80211_vif *vif, | |
1067 | struct ieee80211_key_conf *keyconf, | |
1068 | struct ieee80211_sta *sta, | |
1069 | u32 iv32, u16 *phase1key) | |
1070 | { | |
1071 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1072 | ||
1073 | iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key); | |
1074 | } | |
1075 | ||
1076 | ||
1077 | static int iwl_mvm_roc(struct ieee80211_hw *hw, | |
1078 | struct ieee80211_vif *vif, | |
1079 | struct ieee80211_channel *channel, | |
1080 | int duration) | |
1081 | { | |
1082 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1083 | struct cfg80211_chan_def chandef; | |
1084 | int ret; | |
1085 | ||
1086 | if (vif->type != NL80211_IFTYPE_P2P_DEVICE) { | |
1087 | IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type); | |
1088 | return -EINVAL; | |
1089 | } | |
1090 | ||
1091 | IWL_DEBUG_MAC80211(mvm, "enter (%d, %d)\n", channel->hw_value, | |
1092 | duration); | |
1093 | ||
1094 | mutex_lock(&mvm->mutex); | |
1095 | ||
1096 | cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT); | |
1097 | ret = iwl_mvm_phy_ctxt_changed(mvm, &mvm->phy_ctxt_roc, | |
1098 | &chandef, 1, 1); | |
1099 | ||
1100 | /* Schedule the time events */ | |
1101 | ret = iwl_mvm_start_p2p_roc(mvm, vif, duration); | |
1102 | ||
1103 | mutex_unlock(&mvm->mutex); | |
1104 | IWL_DEBUG_MAC80211(mvm, "leave\n"); | |
1105 | ||
1106 | return ret; | |
1107 | } | |
1108 | ||
1109 | static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw) | |
1110 | { | |
1111 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1112 | ||
1113 | IWL_DEBUG_MAC80211(mvm, "enter\n"); | |
1114 | ||
1115 | mutex_lock(&mvm->mutex); | |
1116 | iwl_mvm_stop_p2p_roc(mvm); | |
1117 | mutex_unlock(&mvm->mutex); | |
1118 | ||
1119 | IWL_DEBUG_MAC80211(mvm, "leave\n"); | |
1120 | return 0; | |
1121 | } | |
1122 | ||
1123 | static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw, | |
1124 | struct ieee80211_chanctx_conf *ctx) | |
1125 | { | |
1126 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1127 | struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv; | |
1128 | int ret; | |
1129 | ||
1130 | mutex_lock(&mvm->mutex); | |
1131 | ||
1132 | IWL_DEBUG_MAC80211(mvm, "Add PHY context\n"); | |
1133 | ret = iwl_mvm_phy_ctxt_add(mvm, phy_ctxt, &ctx->def, | |
1134 | ctx->rx_chains_static, | |
1135 | ctx->rx_chains_dynamic); | |
1136 | mutex_unlock(&mvm->mutex); | |
1137 | return ret; | |
1138 | } | |
1139 | ||
1140 | static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw, | |
1141 | struct ieee80211_chanctx_conf *ctx) | |
1142 | { | |
1143 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1144 | struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv; | |
1145 | ||
1146 | mutex_lock(&mvm->mutex); | |
1147 | iwl_mvm_phy_ctxt_remove(mvm, phy_ctxt); | |
1148 | mutex_unlock(&mvm->mutex); | |
1149 | } | |
1150 | ||
1151 | static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw, | |
1152 | struct ieee80211_chanctx_conf *ctx, | |
1153 | u32 changed) | |
1154 | { | |
1155 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1156 | struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv; | |
1157 | ||
1158 | mutex_lock(&mvm->mutex); | |
1159 | iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->def, | |
1160 | ctx->rx_chains_static, | |
1161 | ctx->rx_chains_dynamic); | |
1162 | mutex_unlock(&mvm->mutex); | |
1163 | } | |
1164 | ||
1165 | static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw, | |
1166 | struct ieee80211_vif *vif, | |
1167 | struct ieee80211_chanctx_conf *ctx) | |
1168 | { | |
1169 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1170 | struct iwl_mvm_phy_ctxt *phyctx = (void *)ctx->drv_priv; | |
1171 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1172 | int ret; | |
1173 | ||
1174 | mutex_lock(&mvm->mutex); | |
1175 | ||
1176 | mvmvif->phy_ctxt = phyctx; | |
1177 | ||
1178 | switch (vif->type) { | |
1179 | case NL80211_IFTYPE_AP: | |
1180 | /* | |
1181 | * The AP binding flow is handled as part of the start_ap flow | |
1182 | * (in bss_info_changed). | |
1183 | */ | |
1184 | ret = 0; | |
1185 | goto out_unlock; | |
1186 | case NL80211_IFTYPE_STATION: | |
1187 | case NL80211_IFTYPE_ADHOC: | |
1188 | case NL80211_IFTYPE_MONITOR: | |
1189 | break; | |
1190 | default: | |
1191 | ret = -EINVAL; | |
1192 | goto out_unlock; | |
1193 | } | |
1194 | ||
1195 | ret = iwl_mvm_binding_add_vif(mvm, vif); | |
1196 | if (ret) | |
1197 | goto out_unlock; | |
1198 | ||
1199 | /* | |
1200 | * Setting the quota at this stage is only required for monitor | |
1201 | * interfaces. For the other types, the bss_info changed flow | |
1202 | * will handle quota settings. | |
1203 | */ | |
1204 | if (vif->type == NL80211_IFTYPE_MONITOR) { | |
1205 | ret = iwl_mvm_update_quotas(mvm, vif); | |
1206 | if (ret) | |
1207 | goto out_remove_binding; | |
1208 | } | |
1209 | ||
1210 | goto out_unlock; | |
1211 | ||
1212 | out_remove_binding: | |
1213 | iwl_mvm_binding_remove_vif(mvm, vif); | |
1214 | out_unlock: | |
1215 | mutex_unlock(&mvm->mutex); | |
1216 | if (ret) | |
1217 | mvmvif->phy_ctxt = NULL; | |
1218 | return ret; | |
1219 | } | |
1220 | ||
1221 | static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw, | |
1222 | struct ieee80211_vif *vif, | |
1223 | struct ieee80211_chanctx_conf *ctx) | |
1224 | { | |
1225 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1226 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1227 | ||
1228 | mutex_lock(&mvm->mutex); | |
1229 | ||
1230 | iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data); | |
1231 | ||
1232 | if (vif->type == NL80211_IFTYPE_AP) | |
1233 | goto out_unlock; | |
1234 | ||
1235 | iwl_mvm_binding_remove_vif(mvm, vif); | |
1236 | switch (vif->type) { | |
1237 | case NL80211_IFTYPE_MONITOR: | |
1238 | iwl_mvm_update_quotas(mvm, vif); | |
1239 | break; | |
1240 | default: | |
1241 | break; | |
1242 | } | |
1243 | ||
1244 | out_unlock: | |
1245 | mvmvif->phy_ctxt = NULL; | |
1246 | mutex_unlock(&mvm->mutex); | |
1247 | } | |
1248 | ||
1249 | static int iwl_mvm_set_tim(struct ieee80211_hw *hw, | |
1250 | struct ieee80211_sta *sta, | |
1251 | bool set) | |
1252 | { | |
1253 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1254 | struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv; | |
1255 | ||
1256 | if (!mvm_sta || !mvm_sta->vif) { | |
1257 | IWL_ERR(mvm, "Station is not associated to a vif\n"); | |
1258 | return -EINVAL; | |
1259 | } | |
1260 | ||
1261 | return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif); | |
1262 | } | |
1263 | ||
1264 | struct ieee80211_ops iwl_mvm_hw_ops = { | |
1265 | .tx = iwl_mvm_mac_tx, | |
1266 | .ampdu_action = iwl_mvm_mac_ampdu_action, | |
1267 | .start = iwl_mvm_mac_start, | |
1268 | .restart_complete = iwl_mvm_mac_restart_complete, | |
1269 | .stop = iwl_mvm_mac_stop, | |
1270 | .add_interface = iwl_mvm_mac_add_interface, | |
1271 | .remove_interface = iwl_mvm_mac_remove_interface, | |
1272 | .config = iwl_mvm_mac_config, | |
1273 | .configure_filter = iwl_mvm_configure_filter, | |
1274 | .bss_info_changed = iwl_mvm_bss_info_changed, | |
1275 | .hw_scan = iwl_mvm_mac_hw_scan, | |
1276 | .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan, | |
1277 | .sta_state = iwl_mvm_mac_sta_state, | |
1278 | .sta_notify = iwl_mvm_mac_sta_notify, | |
1279 | .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames, | |
1280 | .set_rts_threshold = iwl_mvm_mac_set_rts_threshold, | |
1281 | .conf_tx = iwl_mvm_mac_conf_tx, | |
1282 | .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx, | |
1283 | .set_key = iwl_mvm_mac_set_key, | |
1284 | .update_tkip_key = iwl_mvm_mac_update_tkip_key, | |
1285 | .remain_on_channel = iwl_mvm_roc, | |
1286 | .cancel_remain_on_channel = iwl_mvm_cancel_roc, | |
1287 | ||
1288 | .add_chanctx = iwl_mvm_add_chanctx, | |
1289 | .remove_chanctx = iwl_mvm_remove_chanctx, | |
1290 | .change_chanctx = iwl_mvm_change_chanctx, | |
1291 | .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx, | |
1292 | .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx, | |
1293 | ||
1294 | .start_ap = iwl_mvm_start_ap, | |
1295 | .stop_ap = iwl_mvm_stop_ap, | |
1296 | ||
1297 | .set_tim = iwl_mvm_set_tim, | |
1298 | ||
1299 | #ifdef CONFIG_PM_SLEEP | |
1300 | /* look at d3.c */ | |
1301 | .suspend = iwl_mvm_suspend, | |
1302 | .resume = iwl_mvm_resume, | |
1303 | .set_wakeup = iwl_mvm_set_wakeup, | |
1304 | .set_rekey_data = iwl_mvm_set_rekey_data, | |
1305 | #if IS_ENABLED(CONFIG_IPV6) | |
1306 | .ipv6_addr_change = iwl_mvm_ipv6_addr_change, | |
1307 | #endif | |
1308 | .set_default_unicast_key = iwl_mvm_set_default_unicast_key, | |
1309 | #endif | |
1310 | }; |