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8ca151b5 JB |
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 | |
410dc5aa | 25 | * in the file called COPYING. |
8ca151b5 JB |
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> | |
f0c2646a | 68 | #include <linux/ip.h> |
8ca151b5 | 69 | #include <net/mac80211.h> |
f0c2646a | 70 | #include <net/tcp.h> |
8ca151b5 JB |
71 | |
72 | #include "iwl-op-mode.h" | |
73 | #include "iwl-io.h" | |
74 | #include "mvm.h" | |
75 | #include "sta.h" | |
76 | #include "time-event.h" | |
77 | #include "iwl-eeprom-parse.h" | |
78 | #include "fw-api-scan.h" | |
79 | #include "iwl-phy-db.h" | |
80 | ||
81 | static const struct ieee80211_iface_limit iwl_mvm_limits[] = { | |
82 | { | |
83 | .max = 1, | |
84 | .types = BIT(NL80211_IFTYPE_STATION) | | |
85 | BIT(NL80211_IFTYPE_AP), | |
86 | }, | |
87 | { | |
88 | .max = 1, | |
89 | .types = BIT(NL80211_IFTYPE_P2P_CLIENT) | | |
90 | BIT(NL80211_IFTYPE_P2P_GO), | |
91 | }, | |
92 | { | |
93 | .max = 1, | |
94 | .types = BIT(NL80211_IFTYPE_P2P_DEVICE), | |
95 | }, | |
96 | }; | |
97 | ||
98 | static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = { | |
99 | { | |
100 | .num_different_channels = 1, | |
101 | .max_interfaces = 3, | |
102 | .limits = iwl_mvm_limits, | |
103 | .n_limits = ARRAY_SIZE(iwl_mvm_limits), | |
104 | }, | |
105 | }; | |
106 | ||
f0c2646a JB |
107 | #ifdef CONFIG_PM_SLEEP |
108 | static const struct nl80211_wowlan_tcp_data_token_feature | |
109 | iwl_mvm_wowlan_tcp_token_feature = { | |
110 | .min_len = 0, | |
111 | .max_len = 255, | |
112 | .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS, | |
113 | }; | |
114 | ||
115 | static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = { | |
116 | .tok = &iwl_mvm_wowlan_tcp_token_feature, | |
117 | .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN - | |
118 | sizeof(struct ethhdr) - | |
119 | sizeof(struct iphdr) - | |
120 | sizeof(struct tcphdr), | |
121 | .data_interval_max = 65535, /* __le16 in API */ | |
122 | .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN - | |
123 | sizeof(struct ethhdr) - | |
124 | sizeof(struct iphdr) - | |
125 | sizeof(struct tcphdr), | |
126 | .seq = true, | |
127 | }; | |
128 | #endif | |
129 | ||
8ca151b5 JB |
130 | int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) |
131 | { | |
132 | struct ieee80211_hw *hw = mvm->hw; | |
831e85f3 | 133 | int num_mac, ret, i; |
8ca151b5 JB |
134 | |
135 | /* Tell mac80211 our characteristics */ | |
136 | hw->flags = IEEE80211_HW_SIGNAL_DBM | | |
137 | IEEE80211_HW_SPECTRUM_MGMT | | |
138 | IEEE80211_HW_REPORTS_TX_ACK_STATUS | | |
139 | IEEE80211_HW_QUEUE_CONTROL | | |
140 | IEEE80211_HW_WANT_MONITOR_VIF | | |
8ca151b5 JB |
141 | IEEE80211_HW_SUPPORTS_PS | |
142 | IEEE80211_HW_SUPPORTS_DYNAMIC_PS | | |
d2931bbd JB |
143 | IEEE80211_HW_AMPDU_AGGREGATION | |
144 | IEEE80211_HW_TIMING_BEACON_ONLY; | |
8ca151b5 | 145 | |
398e8c6c IP |
146 | hw->queues = IWL_MVM_FIRST_AGG_QUEUE; |
147 | hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE; | |
8ca151b5 JB |
148 | hw->rate_control_algorithm = "iwl-mvm-rs"; |
149 | ||
150 | /* | |
151 | * Enable 11w if advertised by firmware and software crypto | |
152 | * is not enabled (as the firmware will interpret some mgmt | |
153 | * packets, so enabling it with software crypto isn't safe) | |
154 | */ | |
155 | if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP && | |
156 | !iwlwifi_mod_params.sw_crypto) | |
157 | hw->flags |= IEEE80211_HW_MFP_CAPABLE; | |
158 | ||
159 | hw->sta_data_size = sizeof(struct iwl_mvm_sta); | |
160 | hw->vif_data_size = sizeof(struct iwl_mvm_vif); | |
161 | hw->chanctx_data_size = sizeof(struct iwl_mvm_phy_ctxt); | |
162 | ||
163 | hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | | |
164 | BIT(NL80211_IFTYPE_P2P_CLIENT) | | |
165 | BIT(NL80211_IFTYPE_AP) | | |
166 | BIT(NL80211_IFTYPE_P2P_GO) | | |
167 | BIT(NL80211_IFTYPE_P2P_DEVICE); | |
168 | ||
169 | hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY | | |
170 | WIPHY_FLAG_DISABLE_BEACON_HINTS | | |
171 | WIPHY_FLAG_IBSS_RSN; | |
172 | ||
173 | hw->wiphy->iface_combinations = iwl_mvm_iface_combinations; | |
174 | hw->wiphy->n_iface_combinations = | |
175 | ARRAY_SIZE(iwl_mvm_iface_combinations); | |
176 | ||
c451e6d4 | 177 | hw->wiphy->max_remain_on_channel_duration = 10000; |
8ca151b5 JB |
178 | hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL; |
179 | ||
180 | /* Extract MAC address */ | |
181 | memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN); | |
182 | hw->wiphy->addresses = mvm->addresses; | |
183 | hw->wiphy->n_addresses = 1; | |
831e85f3 IP |
184 | |
185 | /* Extract additional MAC addresses if available */ | |
186 | num_mac = (mvm->nvm_data->n_hw_addrs > 1) ? | |
187 | min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1; | |
188 | ||
189 | for (i = 1; i < num_mac; i++) { | |
190 | memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr, | |
8ca151b5 | 191 | ETH_ALEN); |
831e85f3 | 192 | mvm->addresses[i].addr[5]++; |
8ca151b5 JB |
193 | hw->wiphy->n_addresses++; |
194 | } | |
195 | ||
196 | /* we create the 802.11 header and a max-length SSID element */ | |
197 | hw->wiphy->max_scan_ie_len = | |
198 | mvm->fw->ucode_capa.max_probe_length - 24 - 34; | |
199 | hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX; | |
200 | ||
201 | if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels) | |
202 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = | |
203 | &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ]; | |
204 | if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) | |
205 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = | |
206 | &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ]; | |
207 | ||
208 | hw->wiphy->hw_version = mvm->trans->hw_id; | |
209 | ||
ade50652 | 210 | if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) |
8ca151b5 JB |
211 | hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; |
212 | else | |
213 | hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; | |
214 | ||
215 | hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN | | |
216 | NL80211_FEATURE_P2P_GO_OPPPS; | |
217 | ||
218 | mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; | |
219 | ||
220 | #ifdef CONFIG_PM_SLEEP | |
221 | if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len && | |
222 | mvm->trans->ops->d3_suspend && | |
223 | mvm->trans->ops->d3_resume && | |
224 | device_can_wakeup(mvm->trans->dev)) { | |
225 | hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT | | |
226 | WIPHY_WOWLAN_DISCONNECT | | |
227 | WIPHY_WOWLAN_EAP_IDENTITY_REQ | | |
228 | WIPHY_WOWLAN_RFKILL_RELEASE; | |
229 | if (!iwlwifi_mod_params.sw_crypto) | |
230 | hw->wiphy->wowlan.flags |= | |
231 | WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | | |
232 | WIPHY_WOWLAN_GTK_REKEY_FAILURE | | |
233 | WIPHY_WOWLAN_4WAY_HANDSHAKE; | |
234 | ||
235 | hw->wiphy->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS; | |
236 | hw->wiphy->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN; | |
237 | hw->wiphy->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN; | |
f0c2646a | 238 | hw->wiphy->wowlan.tcp = &iwl_mvm_wowlan_tcp_support; |
8ca151b5 JB |
239 | } |
240 | #endif | |
241 | ||
242 | ret = iwl_mvm_leds_init(mvm); | |
243 | if (ret) | |
244 | return ret; | |
245 | ||
246 | return ieee80211_register_hw(mvm->hw); | |
247 | } | |
248 | ||
249 | static void iwl_mvm_mac_tx(struct ieee80211_hw *hw, | |
250 | struct ieee80211_tx_control *control, | |
251 | struct sk_buff *skb) | |
252 | { | |
253 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
254 | ||
255 | if (test_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status)) { | |
256 | IWL_DEBUG_DROP(mvm, "Dropping - RF KILL\n"); | |
257 | goto drop; | |
258 | } | |
259 | ||
398e8c6c | 260 | if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE && |
8ca151b5 JB |
261 | !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status)) |
262 | goto drop; | |
263 | ||
264 | if (control->sta) { | |
265 | if (iwl_mvm_tx_skb(mvm, skb, control->sta)) | |
266 | goto drop; | |
267 | return; | |
268 | } | |
269 | ||
270 | if (iwl_mvm_tx_skb_non_sta(mvm, skb)) | |
271 | goto drop; | |
272 | return; | |
273 | drop: | |
274 | ieee80211_free_txskb(hw, skb); | |
275 | } | |
276 | ||
277 | static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw, | |
278 | struct ieee80211_vif *vif, | |
279 | enum ieee80211_ampdu_mlme_action action, | |
280 | struct ieee80211_sta *sta, u16 tid, | |
281 | u16 *ssn, u8 buf_size) | |
282 | { | |
283 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
284 | int ret; | |
285 | ||
286 | IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n", | |
287 | sta->addr, tid, action); | |
288 | ||
289 | if (!(mvm->nvm_data->sku_cap_11n_enable)) | |
290 | return -EACCES; | |
291 | ||
292 | mutex_lock(&mvm->mutex); | |
293 | ||
294 | switch (action) { | |
295 | case IEEE80211_AMPDU_RX_START: | |
296 | if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG) { | |
297 | ret = -EINVAL; | |
298 | break; | |
299 | } | |
300 | ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true); | |
301 | break; | |
302 | case IEEE80211_AMPDU_RX_STOP: | |
303 | ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false); | |
304 | break; | |
305 | case IEEE80211_AMPDU_TX_START: | |
5d158efa EG |
306 | if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG) { |
307 | ret = -EINVAL; | |
308 | break; | |
309 | } | |
8ca151b5 JB |
310 | ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn); |
311 | break; | |
312 | case IEEE80211_AMPDU_TX_STOP_CONT: | |
e3d9e7ce EG |
313 | ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid); |
314 | break; | |
8ca151b5 JB |
315 | case IEEE80211_AMPDU_TX_STOP_FLUSH: |
316 | case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: | |
e3d9e7ce | 317 | ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid); |
8ca151b5 JB |
318 | break; |
319 | case IEEE80211_AMPDU_TX_OPERATIONAL: | |
320 | ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size); | |
321 | break; | |
322 | default: | |
323 | WARN_ON_ONCE(1); | |
324 | ret = -EINVAL; | |
325 | break; | |
326 | } | |
327 | mutex_unlock(&mvm->mutex); | |
328 | ||
329 | return ret; | |
330 | } | |
331 | ||
332 | static void iwl_mvm_cleanup_iterator(void *data, u8 *mac, | |
333 | struct ieee80211_vif *vif) | |
334 | { | |
335 | struct iwl_mvm *mvm = data; | |
336 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
337 | ||
338 | mvmvif->uploaded = false; | |
339 | mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; | |
340 | ||
341 | /* does this make sense at all? */ | |
342 | mvmvif->color++; | |
343 | ||
344 | spin_lock_bh(&mvm->time_event_lock); | |
345 | iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data); | |
346 | spin_unlock_bh(&mvm->time_event_lock); | |
347 | ||
348 | if (vif->type != NL80211_IFTYPE_P2P_DEVICE) | |
349 | mvmvif->phy_ctxt = NULL; | |
350 | } | |
351 | ||
352 | static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) | |
353 | { | |
354 | iwl_trans_stop_device(mvm->trans); | |
355 | iwl_trans_stop_hw(mvm->trans, false); | |
356 | ||
357 | mvm->scan_status = IWL_MVM_SCAN_NONE; | |
358 | ||
359 | /* just in case one was running */ | |
360 | ieee80211_remain_on_channel_expired(mvm->hw); | |
361 | ||
362 | ieee80211_iterate_active_interfaces_atomic( | |
363 | mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
364 | iwl_mvm_cleanup_iterator, mvm); | |
365 | ||
366 | memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); | |
367 | memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained)); | |
368 | ||
369 | ieee80211_wake_queues(mvm->hw); | |
370 | ||
371 | mvm->vif_count = 0; | |
372 | } | |
373 | ||
374 | static int iwl_mvm_mac_start(struct ieee80211_hw *hw) | |
375 | { | |
376 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
377 | int ret; | |
378 | ||
379 | mutex_lock(&mvm->mutex); | |
380 | ||
381 | /* Clean up some internal and mac80211 state on restart */ | |
382 | if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) | |
383 | iwl_mvm_restart_cleanup(mvm); | |
384 | ||
385 | ret = iwl_mvm_up(mvm); | |
386 | mutex_unlock(&mvm->mutex); | |
387 | ||
388 | return ret; | |
389 | } | |
390 | ||
391 | static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw) | |
392 | { | |
393 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
394 | int ret; | |
395 | ||
396 | mutex_lock(&mvm->mutex); | |
397 | ||
398 | clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); | |
399 | ret = iwl_mvm_update_quotas(mvm, NULL); | |
400 | if (ret) | |
401 | IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n", | |
402 | ret); | |
403 | ||
404 | mutex_unlock(&mvm->mutex); | |
405 | } | |
406 | ||
407 | static void iwl_mvm_mac_stop(struct ieee80211_hw *hw) | |
408 | { | |
409 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
410 | ||
411 | flush_work(&mvm->async_handlers_wk); | |
412 | ||
413 | mutex_lock(&mvm->mutex); | |
414 | /* async_handlers_wk is now blocked */ | |
415 | ||
416 | /* | |
417 | * The work item could be running or queued if the | |
418 | * ROC time event stops just as we get here. | |
419 | */ | |
420 | cancel_work_sync(&mvm->roc_done_wk); | |
421 | ||
422 | iwl_trans_stop_device(mvm->trans); | |
423 | iwl_trans_stop_hw(mvm->trans, false); | |
424 | ||
425 | iwl_mvm_async_handlers_purge(mvm); | |
426 | /* async_handlers_list is empty and will stay empty: HW is stopped */ | |
427 | ||
428 | /* the fw is stopped, the aux sta is dead: clean up driver state */ | |
429 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); | |
430 | ||
431 | mutex_unlock(&mvm->mutex); | |
432 | ||
433 | /* | |
434 | * The worker might have been waiting for the mutex, let it run and | |
435 | * discover that its list is now empty. | |
436 | */ | |
437 | cancel_work_sync(&mvm->async_handlers_wk); | |
438 | } | |
439 | ||
440 | static void iwl_mvm_pm_disable_iterator(void *data, u8 *mac, | |
441 | struct ieee80211_vif *vif) | |
442 | { | |
443 | struct iwl_mvm *mvm = data; | |
444 | int ret; | |
445 | ||
446 | ret = iwl_mvm_power_disable(mvm, vif); | |
447 | if (ret) | |
448 | IWL_ERR(mvm, "failed to disable power management\n"); | |
449 | } | |
450 | ||
451 | static void iwl_mvm_power_update_iterator(void *data, u8 *mac, | |
452 | struct ieee80211_vif *vif) | |
453 | { | |
454 | struct iwl_mvm *mvm = data; | |
455 | ||
456 | iwl_mvm_power_update_mode(mvm, vif); | |
457 | } | |
458 | ||
459 | static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw, | |
460 | struct ieee80211_vif *vif) | |
461 | { | |
462 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
463 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
464 | int ret; | |
465 | ||
466 | /* | |
467 | * Not much to do here. The stack will not allow interface | |
468 | * types or combinations that we didn't advertise, so we | |
469 | * don't really have to check the types. | |
470 | */ | |
471 | ||
472 | mutex_lock(&mvm->mutex); | |
473 | ||
474 | /* Allocate resources for the MAC context, and add it the the fw */ | |
475 | ret = iwl_mvm_mac_ctxt_init(mvm, vif); | |
476 | if (ret) | |
477 | goto out_unlock; | |
478 | ||
479 | /* | |
480 | * The AP binding flow can be done only after the beacon | |
481 | * template is configured (which happens only in the mac80211 | |
482 | * start_ap() flow), and adding the broadcast station can happen | |
483 | * only after the binding. | |
484 | * In addition, since modifying the MAC before adding a bcast | |
485 | * station is not allowed by the FW, delay the adding of MAC context to | |
486 | * the point where we can also add the bcast station. | |
487 | * In short: there's not much we can do at this point, other than | |
488 | * allocating resources :) | |
489 | */ | |
490 | if (vif->type == NL80211_IFTYPE_AP) { | |
491 | u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif); | |
492 | ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, | |
493 | qmask); | |
494 | if (ret) { | |
495 | IWL_ERR(mvm, "Failed to allocate bcast sta\n"); | |
496 | goto out_release; | |
497 | } | |
498 | ||
499 | goto out_unlock; | |
500 | } | |
501 | ||
502 | /* | |
503 | * TODO: remove this temporary code. | |
504 | * Currently MVM FW supports power management only on single MAC. | |
5ee2b215 AB |
505 | * If new interface added, disable PM on existing interface. |
506 | * P2P device is a special case, since it is handled by FW similary to | |
507 | * scan. If P2P deviced is added, PM remains enabled on existing | |
508 | * interface. | |
8ca151b5 JB |
509 | * Note: the method below does not count the new interface being added |
510 | * at this moment. | |
511 | */ | |
5ee2b215 AB |
512 | if (vif->type != NL80211_IFTYPE_P2P_DEVICE) |
513 | mvm->vif_count++; | |
8ca151b5 JB |
514 | if (mvm->vif_count > 1) { |
515 | IWL_DEBUG_MAC80211(mvm, | |
516 | "Disable power on existing interfaces\n"); | |
5360cfb2 | 517 | ieee80211_iterate_active_interfaces_atomic( |
8ca151b5 JB |
518 | mvm->hw, |
519 | IEEE80211_IFACE_ITER_NORMAL, | |
520 | iwl_mvm_pm_disable_iterator, mvm); | |
521 | } | |
522 | ||
523 | ret = iwl_mvm_mac_ctxt_add(mvm, vif); | |
524 | if (ret) | |
525 | goto out_release; | |
526 | ||
527 | /* | |
528 | * Update power state on the new interface. Admittedly, based on | |
529 | * mac80211 logics this power update will disable power management | |
530 | */ | |
531 | iwl_mvm_power_update_mode(mvm, vif); | |
532 | ||
533 | /* | |
534 | * P2P_DEVICE interface does not have a channel context assigned to it, | |
535 | * so a dedicated PHY context is allocated to it and the corresponding | |
536 | * MAC context is bound to it at this stage. | |
537 | */ | |
538 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
539 | struct ieee80211_channel *chan; | |
540 | struct cfg80211_chan_def chandef; | |
541 | ||
542 | mvmvif->phy_ctxt = &mvm->phy_ctxt_roc; | |
543 | ||
544 | /* | |
545 | * The channel used here isn't relevant as it's | |
546 | * going to be overwritten as part of the ROC flow. | |
547 | * For now use the first channel we have. | |
548 | */ | |
549 | chan = &mvm->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels[0]; | |
550 | cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_NO_HT); | |
551 | ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, | |
552 | &chandef, 1, 1); | |
553 | if (ret) | |
554 | goto out_remove_mac; | |
555 | ||
556 | ret = iwl_mvm_binding_add_vif(mvm, vif); | |
557 | if (ret) | |
558 | goto out_remove_phy; | |
559 | ||
560 | ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta); | |
561 | if (ret) | |
562 | goto out_unbind; | |
563 | ||
564 | /* Save a pointer to p2p device vif, so it can later be used to | |
565 | * update the p2p device MAC when a GO is started/stopped */ | |
566 | mvm->p2p_device_vif = vif; | |
567 | } | |
568 | ||
63494374 | 569 | iwl_mvm_vif_dbgfs_register(mvm, vif); |
8ca151b5 JB |
570 | goto out_unlock; |
571 | ||
572 | out_unbind: | |
573 | iwl_mvm_binding_remove_vif(mvm, vif); | |
574 | out_remove_phy: | |
575 | iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt); | |
576 | out_remove_mac: | |
577 | mvmvif->phy_ctxt = NULL; | |
578 | iwl_mvm_mac_ctxt_remove(mvm, vif); | |
579 | out_release: | |
580 | /* | |
581 | * TODO: remove this temporary code. | |
582 | * Currently MVM FW supports power management only on single MAC. | |
5ee2b215 | 583 | * Check if only one additional interface remains after releasing |
8ca151b5 JB |
584 | * current one. Update power mode on the remaining interface. |
585 | */ | |
5ee2b215 AB |
586 | if (vif->type != NL80211_IFTYPE_P2P_DEVICE) |
587 | mvm->vif_count--; | |
8ca151b5 JB |
588 | IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n", |
589 | mvm->vif_count); | |
590 | if (mvm->vif_count == 1) { | |
591 | ieee80211_iterate_active_interfaces( | |
592 | mvm->hw, IEEE80211_IFACE_ITER_NORMAL, | |
593 | iwl_mvm_power_update_iterator, mvm); | |
594 | } | |
595 | iwl_mvm_mac_ctxt_release(mvm, vif); | |
596 | out_unlock: | |
597 | mutex_unlock(&mvm->mutex); | |
598 | ||
599 | return ret; | |
600 | } | |
601 | ||
38a12b5b JB |
602 | static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm, |
603 | struct ieee80211_vif *vif) | |
8ca151b5 | 604 | { |
8ca151b5 JB |
605 | u32 tfd_msk = 0, ac; |
606 | ||
607 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
608 | if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE) | |
609 | tfd_msk |= BIT(vif->hw_queue[ac]); | |
610 | ||
611 | if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE) | |
612 | tfd_msk |= BIT(vif->cab_queue); | |
613 | ||
614 | if (tfd_msk) { | |
615 | mutex_lock(&mvm->mutex); | |
616 | iwl_mvm_flush_tx_path(mvm, tfd_msk, true); | |
617 | mutex_unlock(&mvm->mutex); | |
618 | } | |
619 | ||
620 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
621 | /* | |
622 | * Flush the ROC worker which will flush the OFFCHANNEL queue. | |
623 | * We assume here that all the packets sent to the OFFCHANNEL | |
624 | * queue are sent in ROC session. | |
625 | */ | |
626 | flush_work(&mvm->roc_done_wk); | |
627 | } else { | |
628 | /* | |
629 | * By now, all the AC queues are empty. The AGG queues are | |
630 | * empty too. We already got all the Tx responses for all the | |
631 | * packets in the queues. The drain work can have been | |
632 | * triggered. Flush it. This work item takes the mutex, so kill | |
633 | * it before we take it. | |
634 | */ | |
635 | flush_work(&mvm->sta_drained_wk); | |
636 | } | |
38a12b5b JB |
637 | } |
638 | ||
639 | static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw, | |
640 | struct ieee80211_vif *vif) | |
641 | { | |
642 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
643 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
644 | ||
645 | iwl_mvm_prepare_mac_removal(mvm, vif); | |
8ca151b5 JB |
646 | |
647 | mutex_lock(&mvm->mutex); | |
648 | ||
63494374 JB |
649 | iwl_mvm_vif_dbgfs_clean(mvm, vif); |
650 | ||
8ca151b5 JB |
651 | /* |
652 | * For AP/GO interface, the tear down of the resources allocated to the | |
38a12b5b | 653 | * interface is be handled as part of the stop_ap flow. |
8ca151b5 JB |
654 | */ |
655 | if (vif->type == NL80211_IFTYPE_AP) { | |
656 | iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); | |
657 | goto out_release; | |
658 | } | |
659 | ||
660 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
661 | mvm->p2p_device_vif = NULL; | |
662 | iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta); | |
663 | iwl_mvm_binding_remove_vif(mvm, vif); | |
664 | iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt); | |
665 | mvmvif->phy_ctxt = NULL; | |
666 | } | |
667 | ||
668 | /* | |
669 | * TODO: remove this temporary code. | |
670 | * Currently MVM FW supports power management only on single MAC. | |
671 | * Check if only one additional interface remains after removing | |
672 | * current one. Update power mode on the remaining interface. | |
673 | */ | |
5ee2b215 | 674 | if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE) |
8ca151b5 JB |
675 | mvm->vif_count--; |
676 | IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n", | |
677 | mvm->vif_count); | |
678 | if (mvm->vif_count == 1) { | |
679 | ieee80211_iterate_active_interfaces( | |
680 | mvm->hw, IEEE80211_IFACE_ITER_NORMAL, | |
681 | iwl_mvm_power_update_iterator, mvm); | |
682 | } | |
683 | ||
684 | iwl_mvm_mac_ctxt_remove(mvm, vif); | |
685 | ||
686 | out_release: | |
687 | iwl_mvm_mac_ctxt_release(mvm, vif); | |
688 | mutex_unlock(&mvm->mutex); | |
689 | } | |
690 | ||
691 | static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed) | |
692 | { | |
693 | return 0; | |
694 | } | |
695 | ||
696 | static void iwl_mvm_configure_filter(struct ieee80211_hw *hw, | |
697 | unsigned int changed_flags, | |
698 | unsigned int *total_flags, | |
699 | u64 multicast) | |
700 | { | |
701 | *total_flags = 0; | |
702 | } | |
703 | ||
704 | static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm, | |
705 | struct ieee80211_vif *vif, | |
706 | struct ieee80211_bss_conf *bss_conf, | |
707 | u32 changes) | |
708 | { | |
709 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
710 | int ret; | |
711 | ||
712 | ret = iwl_mvm_mac_ctxt_changed(mvm, vif); | |
713 | if (ret) | |
714 | IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); | |
715 | ||
716 | if (changes & BSS_CHANGED_ASSOC) { | |
717 | if (bss_conf->assoc) { | |
718 | /* add quota for this interface */ | |
719 | ret = iwl_mvm_update_quotas(mvm, vif); | |
720 | if (ret) { | |
721 | IWL_ERR(mvm, "failed to update quotas\n"); | |
722 | return; | |
723 | } | |
9166b1ee | 724 | iwl_mvm_bt_coex_vif_assoc(mvm, vif); |
8ca151b5 JB |
725 | } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { |
726 | /* remove AP station now that the MAC is unassoc */ | |
727 | ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id); | |
728 | if (ret) | |
729 | IWL_ERR(mvm, "failed to remove AP station\n"); | |
730 | mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; | |
731 | /* remove quota for this interface */ | |
732 | ret = iwl_mvm_update_quotas(mvm, NULL); | |
733 | if (ret) | |
734 | IWL_ERR(mvm, "failed to update quotas\n"); | |
735 | } | |
210a544e JB |
736 | } else if (changes & BSS_CHANGED_DTIM_PERIOD) { |
737 | /* | |
738 | * We received a beacon _after_ association so | |
739 | * remove the session protection. | |
740 | */ | |
741 | iwl_mvm_remove_time_event(mvm, mvmvif, | |
742 | &mvmvif->time_event_data); | |
8ca151b5 JB |
743 | } else if (changes & BSS_CHANGED_PS) { |
744 | /* | |
745 | * TODO: remove this temporary code. | |
746 | * Currently MVM FW supports power management only on single | |
747 | * MAC. Avoid power mode update if more than one interface | |
748 | * is active. | |
749 | */ | |
750 | IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n", | |
751 | mvm->vif_count); | |
752 | if (mvm->vif_count == 1) { | |
753 | ret = iwl_mvm_power_update_mode(mvm, vif); | |
754 | if (ret) | |
755 | IWL_ERR(mvm, "failed to update power mode\n"); | |
756 | } | |
757 | } | |
758 | } | |
759 | ||
760 | static int iwl_mvm_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif) | |
761 | { | |
762 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
763 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
764 | int ret; | |
765 | ||
766 | mutex_lock(&mvm->mutex); | |
767 | ||
768 | /* Send the beacon template */ | |
769 | ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif); | |
770 | if (ret) | |
771 | goto out_unlock; | |
772 | ||
773 | /* Add the mac context */ | |
774 | ret = iwl_mvm_mac_ctxt_add(mvm, vif); | |
775 | if (ret) | |
776 | goto out_unlock; | |
777 | ||
778 | /* Perform the binding */ | |
779 | ret = iwl_mvm_binding_add_vif(mvm, vif); | |
780 | if (ret) | |
781 | goto out_remove; | |
782 | ||
783 | mvmvif->ap_active = true; | |
784 | ||
785 | /* Send the bcast station. At this stage the TBTT and DTIM time events | |
786 | * are added and applied to the scheduler */ | |
787 | ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta); | |
788 | if (ret) | |
789 | goto out_unbind; | |
790 | ||
791 | ret = iwl_mvm_update_quotas(mvm, vif); | |
792 | if (ret) | |
793 | goto out_rm_bcast; | |
794 | ||
795 | /* Need to update the P2P Device MAC */ | |
796 | if (vif->p2p && mvm->p2p_device_vif) | |
797 | iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif); | |
798 | ||
799 | mutex_unlock(&mvm->mutex); | |
800 | return 0; | |
801 | ||
802 | out_rm_bcast: | |
803 | iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta); | |
804 | out_unbind: | |
805 | iwl_mvm_binding_remove_vif(mvm, vif); | |
806 | out_remove: | |
807 | iwl_mvm_mac_ctxt_remove(mvm, vif); | |
808 | out_unlock: | |
809 | mutex_unlock(&mvm->mutex); | |
810 | return ret; | |
811 | } | |
812 | ||
813 | static void iwl_mvm_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif) | |
814 | { | |
815 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
816 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
817 | ||
38a12b5b JB |
818 | iwl_mvm_prepare_mac_removal(mvm, vif); |
819 | ||
8ca151b5 JB |
820 | mutex_lock(&mvm->mutex); |
821 | ||
822 | mvmvif->ap_active = false; | |
823 | ||
824 | /* Need to update the P2P Device MAC */ | |
825 | if (vif->p2p && mvm->p2p_device_vif) | |
826 | iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif); | |
827 | ||
828 | iwl_mvm_update_quotas(mvm, NULL); | |
829 | iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta); | |
830 | iwl_mvm_binding_remove_vif(mvm, vif); | |
831 | iwl_mvm_mac_ctxt_remove(mvm, vif); | |
832 | ||
833 | mutex_unlock(&mvm->mutex); | |
834 | } | |
835 | ||
836 | static void iwl_mvm_bss_info_changed_ap(struct iwl_mvm *mvm, | |
837 | struct ieee80211_vif *vif, | |
838 | struct ieee80211_bss_conf *bss_conf, | |
839 | u32 changes) | |
840 | { | |
841 | /* Need to send a new beacon template to the FW */ | |
842 | if (changes & BSS_CHANGED_BEACON) { | |
843 | if (iwl_mvm_mac_ctxt_beacon_changed(mvm, vif)) | |
844 | IWL_WARN(mvm, "Failed updating beacon data\n"); | |
845 | } | |
846 | } | |
847 | ||
848 | static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw, | |
849 | struct ieee80211_vif *vif, | |
850 | struct ieee80211_bss_conf *bss_conf, | |
851 | u32 changes) | |
852 | { | |
853 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
854 | ||
855 | mutex_lock(&mvm->mutex); | |
856 | ||
857 | switch (vif->type) { | |
858 | case NL80211_IFTYPE_STATION: | |
859 | iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes); | |
860 | break; | |
861 | case NL80211_IFTYPE_AP: | |
862 | iwl_mvm_bss_info_changed_ap(mvm, vif, bss_conf, changes); | |
863 | break; | |
864 | default: | |
865 | /* shouldn't happen */ | |
866 | WARN_ON_ONCE(1); | |
867 | } | |
868 | ||
869 | mutex_unlock(&mvm->mutex); | |
870 | } | |
871 | ||
872 | static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, | |
873 | struct ieee80211_vif *vif, | |
874 | struct cfg80211_scan_request *req) | |
875 | { | |
876 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
877 | int ret; | |
878 | ||
879 | if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS) | |
880 | return -EINVAL; | |
881 | ||
882 | mutex_lock(&mvm->mutex); | |
883 | ||
884 | if (mvm->scan_status == IWL_MVM_SCAN_NONE) | |
885 | ret = iwl_mvm_scan_request(mvm, vif, req); | |
886 | else | |
887 | ret = -EBUSY; | |
888 | ||
889 | mutex_unlock(&mvm->mutex); | |
890 | ||
891 | return ret; | |
892 | } | |
893 | ||
894 | static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw, | |
895 | struct ieee80211_vif *vif) | |
896 | { | |
897 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
898 | ||
899 | mutex_lock(&mvm->mutex); | |
900 | ||
901 | iwl_mvm_cancel_scan(mvm); | |
902 | ||
903 | mutex_unlock(&mvm->mutex); | |
904 | } | |
905 | ||
906 | static void | |
907 | iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw, | |
908 | struct ieee80211_sta *sta, u16 tid, | |
909 | int num_frames, | |
910 | enum ieee80211_frame_release_type reason, | |
911 | bool more_data) | |
912 | { | |
913 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
8ca151b5 JB |
914 | |
915 | /* TODO: how do we tell the fw to send frames for a specific TID */ | |
916 | ||
917 | /* | |
918 | * The fw will send EOSP notification when the last frame will be | |
919 | * transmitted. | |
920 | */ | |
9cc40712 | 921 | iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames); |
8ca151b5 JB |
922 | } |
923 | ||
924 | static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, | |
925 | struct ieee80211_vif *vif, | |
926 | enum sta_notify_cmd cmd, | |
927 | struct ieee80211_sta *sta) | |
928 | { | |
929 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
930 | struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv; | |
931 | ||
932 | switch (cmd) { | |
933 | case STA_NOTIFY_SLEEP: | |
934 | if (atomic_read(&mvmsta->pending_frames) > 0) | |
935 | ieee80211_sta_block_awake(hw, sta, true); | |
936 | /* | |
937 | * The fw updates the STA to be asleep. Tx packets on the Tx | |
938 | * queues to this station will not be transmitted. The fw will | |
939 | * send a Tx response with TX_STATUS_FAIL_DEST_PS. | |
940 | */ | |
941 | break; | |
942 | case STA_NOTIFY_AWAKE: | |
881acd89 | 943 | if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT)) |
8ca151b5 | 944 | break; |
9cc40712 | 945 | iwl_mvm_sta_modify_ps_wake(mvm, sta); |
8ca151b5 JB |
946 | break; |
947 | default: | |
948 | break; | |
949 | } | |
950 | } | |
951 | ||
952 | static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw, | |
953 | struct ieee80211_vif *vif, | |
954 | struct ieee80211_sta *sta, | |
955 | enum ieee80211_sta_state old_state, | |
956 | enum ieee80211_sta_state new_state) | |
957 | { | |
958 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
959 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
960 | int ret; | |
961 | ||
962 | IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n", | |
963 | sta->addr, old_state, new_state); | |
964 | ||
965 | /* this would be a mac80211 bug ... but don't crash */ | |
966 | if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) | |
967 | return -EINVAL; | |
968 | ||
969 | /* if a STA is being removed, reuse its ID */ | |
970 | flush_work(&mvm->sta_drained_wk); | |
971 | ||
972 | mutex_lock(&mvm->mutex); | |
973 | if (old_state == IEEE80211_STA_NOTEXIST && | |
974 | new_state == IEEE80211_STA_NONE) { | |
975 | ret = iwl_mvm_add_sta(mvm, vif, sta); | |
976 | } else if (old_state == IEEE80211_STA_NONE && | |
977 | new_state == IEEE80211_STA_AUTH) { | |
978 | ret = 0; | |
979 | } else if (old_state == IEEE80211_STA_AUTH && | |
980 | new_state == IEEE80211_STA_ASSOC) { | |
7a453973 JB |
981 | ret = iwl_mvm_update_sta(mvm, vif, sta); |
982 | if (ret == 0) | |
983 | iwl_mvm_rs_rate_init(mvm, sta, | |
984 | mvmvif->phy_ctxt->channel->band); | |
8ca151b5 JB |
985 | } else if (old_state == IEEE80211_STA_ASSOC && |
986 | new_state == IEEE80211_STA_AUTHORIZED) { | |
987 | ret = 0; | |
988 | } else if (old_state == IEEE80211_STA_AUTHORIZED && | |
989 | new_state == IEEE80211_STA_ASSOC) { | |
990 | ret = 0; | |
991 | } else if (old_state == IEEE80211_STA_ASSOC && | |
992 | new_state == IEEE80211_STA_AUTH) { | |
993 | ret = 0; | |
994 | } else if (old_state == IEEE80211_STA_AUTH && | |
995 | new_state == IEEE80211_STA_NONE) { | |
996 | ret = 0; | |
997 | } else if (old_state == IEEE80211_STA_NONE && | |
998 | new_state == IEEE80211_STA_NOTEXIST) { | |
999 | ret = iwl_mvm_rm_sta(mvm, vif, sta); | |
1000 | } else { | |
1001 | ret = -EIO; | |
1002 | } | |
1003 | mutex_unlock(&mvm->mutex); | |
1004 | ||
1005 | return ret; | |
1006 | } | |
1007 | ||
1008 | static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value) | |
1009 | { | |
1010 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1011 | ||
1012 | mvm->rts_threshold = value; | |
1013 | ||
1014 | return 0; | |
1015 | } | |
1016 | ||
1017 | static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw, | |
1018 | struct ieee80211_vif *vif, u16 ac, | |
1019 | const struct ieee80211_tx_queue_params *params) | |
1020 | { | |
1021 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1022 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1023 | ||
1024 | mvmvif->queue_params[ac] = *params; | |
1025 | ||
1026 | /* | |
1027 | * No need to update right away, we'll get BSS_CHANGED_QOS | |
1028 | * The exception is P2P_DEVICE interface which needs immediate update. | |
1029 | */ | |
1030 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
1031 | int ret; | |
1032 | ||
1033 | mutex_lock(&mvm->mutex); | |
1034 | ret = iwl_mvm_mac_ctxt_changed(mvm, vif); | |
1035 | mutex_unlock(&mvm->mutex); | |
1036 | return ret; | |
1037 | } | |
1038 | return 0; | |
1039 | } | |
1040 | ||
1041 | static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw, | |
1042 | struct ieee80211_vif *vif) | |
1043 | { | |
1044 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1045 | u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS, | |
1046 | 200 + vif->bss_conf.beacon_int); | |
1047 | u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS, | |
1048 | 100 + vif->bss_conf.beacon_int); | |
1049 | ||
1050 | if (WARN_ON_ONCE(vif->bss_conf.assoc)) | |
1051 | return; | |
1052 | ||
1053 | mutex_lock(&mvm->mutex); | |
1054 | /* Try really hard to protect the session and hear a beacon */ | |
1055 | iwl_mvm_protect_session(mvm, vif, duration, min_duration); | |
1056 | mutex_unlock(&mvm->mutex); | |
1057 | } | |
1058 | ||
1059 | static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, | |
1060 | enum set_key_cmd cmd, | |
1061 | struct ieee80211_vif *vif, | |
1062 | struct ieee80211_sta *sta, | |
1063 | struct ieee80211_key_conf *key) | |
1064 | { | |
1065 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1066 | int ret; | |
1067 | ||
1068 | if (iwlwifi_mod_params.sw_crypto) { | |
1069 | IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n"); | |
1070 | return -EOPNOTSUPP; | |
1071 | } | |
1072 | ||
1073 | switch (key->cipher) { | |
1074 | case WLAN_CIPHER_SUITE_TKIP: | |
1075 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; | |
1076 | /* fall-through */ | |
1077 | case WLAN_CIPHER_SUITE_CCMP: | |
1078 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; | |
1079 | break; | |
1080 | case WLAN_CIPHER_SUITE_AES_CMAC: | |
1081 | WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE)); | |
1082 | break; | |
1083 | case WLAN_CIPHER_SUITE_WEP40: | |
1084 | case WLAN_CIPHER_SUITE_WEP104: | |
1085 | /* | |
1086 | * Support for TX only, at least for now, so accept | |
1087 | * the key and do nothing else. Then mac80211 will | |
1088 | * pass it for TX but we don't have to use it for RX. | |
1089 | */ | |
1090 | return 0; | |
1091 | default: | |
1092 | return -EOPNOTSUPP; | |
1093 | } | |
1094 | ||
1095 | mutex_lock(&mvm->mutex); | |
1096 | ||
1097 | switch (cmd) { | |
1098 | case SET_KEY: | |
6caffd4f JB |
1099 | if (vif->type == NL80211_IFTYPE_AP && !sta) { |
1100 | /* GTK on AP interface is a TX-only key, return 0 */ | |
1101 | ret = 0; | |
1102 | key->hw_key_idx = STA_KEY_IDX_INVALID; | |
1103 | break; | |
1104 | } | |
1105 | ||
8ca151b5 JB |
1106 | IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n"); |
1107 | ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false); | |
1108 | if (ret) { | |
1109 | IWL_WARN(mvm, "set key failed\n"); | |
1110 | /* | |
1111 | * can't add key for RX, but we don't need it | |
1112 | * in the device for TX so still return 0 | |
1113 | */ | |
6caffd4f | 1114 | key->hw_key_idx = STA_KEY_IDX_INVALID; |
8ca151b5 JB |
1115 | ret = 0; |
1116 | } | |
1117 | ||
1118 | break; | |
1119 | case DISABLE_KEY: | |
6caffd4f JB |
1120 | if (key->hw_key_idx == STA_KEY_IDX_INVALID) { |
1121 | ret = 0; | |
1122 | break; | |
1123 | } | |
1124 | ||
8ca151b5 JB |
1125 | IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n"); |
1126 | ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key); | |
1127 | break; | |
1128 | default: | |
1129 | ret = -EINVAL; | |
1130 | } | |
1131 | ||
1132 | mutex_unlock(&mvm->mutex); | |
1133 | return ret; | |
1134 | } | |
1135 | ||
1136 | static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw, | |
1137 | struct ieee80211_vif *vif, | |
1138 | struct ieee80211_key_conf *keyconf, | |
1139 | struct ieee80211_sta *sta, | |
1140 | u32 iv32, u16 *phase1key) | |
1141 | { | |
1142 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1143 | ||
1144 | iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key); | |
1145 | } | |
1146 | ||
1147 | ||
1148 | static int iwl_mvm_roc(struct ieee80211_hw *hw, | |
1149 | struct ieee80211_vif *vif, | |
1150 | struct ieee80211_channel *channel, | |
d339d5ca IP |
1151 | int duration, |
1152 | enum ieee80211_roc_type type) | |
8ca151b5 JB |
1153 | { |
1154 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1155 | struct cfg80211_chan_def chandef; | |
1156 | int ret; | |
1157 | ||
1158 | if (vif->type != NL80211_IFTYPE_P2P_DEVICE) { | |
1159 | IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type); | |
1160 | return -EINVAL; | |
1161 | } | |
1162 | ||
d339d5ca IP |
1163 | IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value, |
1164 | duration, type); | |
8ca151b5 JB |
1165 | |
1166 | mutex_lock(&mvm->mutex); | |
1167 | ||
1168 | cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT); | |
1169 | ret = iwl_mvm_phy_ctxt_changed(mvm, &mvm->phy_ctxt_roc, | |
1170 | &chandef, 1, 1); | |
1171 | ||
1172 | /* Schedule the time events */ | |
e635c797 | 1173 | ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type); |
8ca151b5 JB |
1174 | |
1175 | mutex_unlock(&mvm->mutex); | |
1176 | IWL_DEBUG_MAC80211(mvm, "leave\n"); | |
1177 | ||
1178 | return ret; | |
1179 | } | |
1180 | ||
1181 | static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw) | |
1182 | { | |
1183 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1184 | ||
1185 | IWL_DEBUG_MAC80211(mvm, "enter\n"); | |
1186 | ||
1187 | mutex_lock(&mvm->mutex); | |
1188 | iwl_mvm_stop_p2p_roc(mvm); | |
1189 | mutex_unlock(&mvm->mutex); | |
1190 | ||
1191 | IWL_DEBUG_MAC80211(mvm, "leave\n"); | |
1192 | return 0; | |
1193 | } | |
1194 | ||
1195 | static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw, | |
1196 | struct ieee80211_chanctx_conf *ctx) | |
1197 | { | |
1198 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1199 | struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv; | |
1200 | int ret; | |
1201 | ||
1202 | mutex_lock(&mvm->mutex); | |
1203 | ||
1204 | IWL_DEBUG_MAC80211(mvm, "Add PHY context\n"); | |
1205 | ret = iwl_mvm_phy_ctxt_add(mvm, phy_ctxt, &ctx->def, | |
1206 | ctx->rx_chains_static, | |
1207 | ctx->rx_chains_dynamic); | |
1208 | mutex_unlock(&mvm->mutex); | |
1209 | return ret; | |
1210 | } | |
1211 | ||
1212 | static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw, | |
1213 | struct ieee80211_chanctx_conf *ctx) | |
1214 | { | |
1215 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1216 | struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv; | |
1217 | ||
1218 | mutex_lock(&mvm->mutex); | |
1219 | iwl_mvm_phy_ctxt_remove(mvm, phy_ctxt); | |
1220 | mutex_unlock(&mvm->mutex); | |
1221 | } | |
1222 | ||
1223 | static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw, | |
1224 | struct ieee80211_chanctx_conf *ctx, | |
1225 | u32 changed) | |
1226 | { | |
1227 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1228 | struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv; | |
1229 | ||
1230 | mutex_lock(&mvm->mutex); | |
1231 | iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->def, | |
1232 | ctx->rx_chains_static, | |
1233 | ctx->rx_chains_dynamic); | |
1234 | mutex_unlock(&mvm->mutex); | |
1235 | } | |
1236 | ||
1237 | static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw, | |
1238 | struct ieee80211_vif *vif, | |
1239 | struct ieee80211_chanctx_conf *ctx) | |
1240 | { | |
1241 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1242 | struct iwl_mvm_phy_ctxt *phyctx = (void *)ctx->drv_priv; | |
1243 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1244 | int ret; | |
1245 | ||
1246 | mutex_lock(&mvm->mutex); | |
1247 | ||
1248 | mvmvif->phy_ctxt = phyctx; | |
1249 | ||
1250 | switch (vif->type) { | |
1251 | case NL80211_IFTYPE_AP: | |
1252 | /* | |
1253 | * The AP binding flow is handled as part of the start_ap flow | |
1254 | * (in bss_info_changed). | |
1255 | */ | |
1256 | ret = 0; | |
1257 | goto out_unlock; | |
1258 | case NL80211_IFTYPE_STATION: | |
1259 | case NL80211_IFTYPE_ADHOC: | |
1260 | case NL80211_IFTYPE_MONITOR: | |
1261 | break; | |
1262 | default: | |
1263 | ret = -EINVAL; | |
1264 | goto out_unlock; | |
1265 | } | |
1266 | ||
1267 | ret = iwl_mvm_binding_add_vif(mvm, vif); | |
1268 | if (ret) | |
1269 | goto out_unlock; | |
1270 | ||
1271 | /* | |
1272 | * Setting the quota at this stage is only required for monitor | |
1273 | * interfaces. For the other types, the bss_info changed flow | |
1274 | * will handle quota settings. | |
1275 | */ | |
1276 | if (vif->type == NL80211_IFTYPE_MONITOR) { | |
1e1391ca | 1277 | mvmvif->monitor_active = true; |
8ca151b5 JB |
1278 | ret = iwl_mvm_update_quotas(mvm, vif); |
1279 | if (ret) | |
1280 | goto out_remove_binding; | |
1281 | } | |
1282 | ||
1283 | goto out_unlock; | |
1284 | ||
1285 | out_remove_binding: | |
1286 | iwl_mvm_binding_remove_vif(mvm, vif); | |
1287 | out_unlock: | |
1288 | mutex_unlock(&mvm->mutex); | |
1289 | if (ret) | |
1290 | mvmvif->phy_ctxt = NULL; | |
1291 | return ret; | |
1292 | } | |
1293 | ||
1294 | static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw, | |
1295 | struct ieee80211_vif *vif, | |
1296 | struct ieee80211_chanctx_conf *ctx) | |
1297 | { | |
1298 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1299 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1300 | ||
1301 | mutex_lock(&mvm->mutex); | |
1302 | ||
1303 | iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data); | |
1304 | ||
1305 | if (vif->type == NL80211_IFTYPE_AP) | |
1306 | goto out_unlock; | |
1307 | ||
8ca151b5 JB |
1308 | switch (vif->type) { |
1309 | case NL80211_IFTYPE_MONITOR: | |
1e1391ca IP |
1310 | mvmvif->monitor_active = false; |
1311 | iwl_mvm_update_quotas(mvm, NULL); | |
8ca151b5 JB |
1312 | break; |
1313 | default: | |
1314 | break; | |
1315 | } | |
1316 | ||
1e1391ca | 1317 | iwl_mvm_binding_remove_vif(mvm, vif); |
8ca151b5 JB |
1318 | out_unlock: |
1319 | mvmvif->phy_ctxt = NULL; | |
1320 | mutex_unlock(&mvm->mutex); | |
1321 | } | |
1322 | ||
1323 | static int iwl_mvm_set_tim(struct ieee80211_hw *hw, | |
1324 | struct ieee80211_sta *sta, | |
1325 | bool set) | |
1326 | { | |
1327 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1328 | struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv; | |
1329 | ||
1330 | if (!mvm_sta || !mvm_sta->vif) { | |
1331 | IWL_ERR(mvm, "Station is not associated to a vif\n"); | |
1332 | return -EINVAL; | |
1333 | } | |
1334 | ||
1335 | return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif); | |
1336 | } | |
1337 | ||
2b76ef13 EG |
1338 | static void iwl_mvm_mac_rssi_callback(struct ieee80211_hw *hw, |
1339 | struct ieee80211_vif *vif, | |
1340 | enum ieee80211_rssi_event rssi_event) | |
1341 | { | |
1342 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1343 | ||
1344 | iwl_mvm_bt_rssi_event(mvm, vif, rssi_event); | |
1345 | } | |
1346 | ||
8ca151b5 JB |
1347 | struct ieee80211_ops iwl_mvm_hw_ops = { |
1348 | .tx = iwl_mvm_mac_tx, | |
1349 | .ampdu_action = iwl_mvm_mac_ampdu_action, | |
1350 | .start = iwl_mvm_mac_start, | |
1351 | .restart_complete = iwl_mvm_mac_restart_complete, | |
1352 | .stop = iwl_mvm_mac_stop, | |
1353 | .add_interface = iwl_mvm_mac_add_interface, | |
1354 | .remove_interface = iwl_mvm_mac_remove_interface, | |
1355 | .config = iwl_mvm_mac_config, | |
1356 | .configure_filter = iwl_mvm_configure_filter, | |
1357 | .bss_info_changed = iwl_mvm_bss_info_changed, | |
1358 | .hw_scan = iwl_mvm_mac_hw_scan, | |
1359 | .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan, | |
1360 | .sta_state = iwl_mvm_mac_sta_state, | |
1361 | .sta_notify = iwl_mvm_mac_sta_notify, | |
1362 | .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames, | |
1363 | .set_rts_threshold = iwl_mvm_mac_set_rts_threshold, | |
1364 | .conf_tx = iwl_mvm_mac_conf_tx, | |
1365 | .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx, | |
1366 | .set_key = iwl_mvm_mac_set_key, | |
1367 | .update_tkip_key = iwl_mvm_mac_update_tkip_key, | |
1368 | .remain_on_channel = iwl_mvm_roc, | |
1369 | .cancel_remain_on_channel = iwl_mvm_cancel_roc, | |
2b76ef13 | 1370 | .rssi_callback = iwl_mvm_mac_rssi_callback, |
8ca151b5 JB |
1371 | |
1372 | .add_chanctx = iwl_mvm_add_chanctx, | |
1373 | .remove_chanctx = iwl_mvm_remove_chanctx, | |
1374 | .change_chanctx = iwl_mvm_change_chanctx, | |
1375 | .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx, | |
1376 | .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx, | |
1377 | ||
1378 | .start_ap = iwl_mvm_start_ap, | |
1379 | .stop_ap = iwl_mvm_stop_ap, | |
1380 | ||
1381 | .set_tim = iwl_mvm_set_tim, | |
1382 | ||
1383 | #ifdef CONFIG_PM_SLEEP | |
1384 | /* look at d3.c */ | |
1385 | .suspend = iwl_mvm_suspend, | |
1386 | .resume = iwl_mvm_resume, | |
1387 | .set_wakeup = iwl_mvm_set_wakeup, | |
1388 | .set_rekey_data = iwl_mvm_set_rekey_data, | |
1389 | #if IS_ENABLED(CONFIG_IPV6) | |
1390 | .ipv6_addr_change = iwl_mvm_ipv6_addr_change, | |
1391 | #endif | |
1392 | .set_default_unicast_key = iwl_mvm_set_default_unicast_key, | |
1393 | #endif | |
1394 | }; |