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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 | ||
177 | hw->wiphy->max_remain_on_channel_duration = 500; | |
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 | ||
210 | if (iwlwifi_mod_params.power_save) | |
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. | |
505 | * Iterate and disable PM on all active interfaces. | |
506 | * Note: the method below does not count the new interface being added | |
507 | * at this moment. | |
508 | */ | |
509 | mvm->vif_count++; | |
510 | if (mvm->vif_count > 1) { | |
511 | IWL_DEBUG_MAC80211(mvm, | |
512 | "Disable power on existing interfaces\n"); | |
5360cfb2 | 513 | ieee80211_iterate_active_interfaces_atomic( |
8ca151b5 JB |
514 | mvm->hw, |
515 | IEEE80211_IFACE_ITER_NORMAL, | |
516 | iwl_mvm_pm_disable_iterator, mvm); | |
517 | } | |
518 | ||
519 | ret = iwl_mvm_mac_ctxt_add(mvm, vif); | |
520 | if (ret) | |
521 | goto out_release; | |
522 | ||
523 | /* | |
524 | * Update power state on the new interface. Admittedly, based on | |
525 | * mac80211 logics this power update will disable power management | |
526 | */ | |
527 | iwl_mvm_power_update_mode(mvm, vif); | |
528 | ||
529 | /* | |
530 | * P2P_DEVICE interface does not have a channel context assigned to it, | |
531 | * so a dedicated PHY context is allocated to it and the corresponding | |
532 | * MAC context is bound to it at this stage. | |
533 | */ | |
534 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
535 | struct ieee80211_channel *chan; | |
536 | struct cfg80211_chan_def chandef; | |
537 | ||
538 | mvmvif->phy_ctxt = &mvm->phy_ctxt_roc; | |
539 | ||
540 | /* | |
541 | * The channel used here isn't relevant as it's | |
542 | * going to be overwritten as part of the ROC flow. | |
543 | * For now use the first channel we have. | |
544 | */ | |
545 | chan = &mvm->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels[0]; | |
546 | cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_NO_HT); | |
547 | ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, | |
548 | &chandef, 1, 1); | |
549 | if (ret) | |
550 | goto out_remove_mac; | |
551 | ||
552 | ret = iwl_mvm_binding_add_vif(mvm, vif); | |
553 | if (ret) | |
554 | goto out_remove_phy; | |
555 | ||
556 | ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta); | |
557 | if (ret) | |
558 | goto out_unbind; | |
559 | ||
560 | /* Save a pointer to p2p device vif, so it can later be used to | |
561 | * update the p2p device MAC when a GO is started/stopped */ | |
562 | mvm->p2p_device_vif = vif; | |
563 | } | |
564 | ||
565 | goto out_unlock; | |
566 | ||
567 | out_unbind: | |
568 | iwl_mvm_binding_remove_vif(mvm, vif); | |
569 | out_remove_phy: | |
570 | iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt); | |
571 | out_remove_mac: | |
572 | mvmvif->phy_ctxt = NULL; | |
573 | iwl_mvm_mac_ctxt_remove(mvm, vif); | |
574 | out_release: | |
575 | /* | |
576 | * TODO: remove this temporary code. | |
577 | * Currently MVM FW supports power management only on single MAC. | |
578 | * Check if only one additional interface remains after rereasing | |
579 | * current one. Update power mode on the remaining interface. | |
580 | */ | |
581 | mvm->vif_count--; | |
582 | IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n", | |
583 | mvm->vif_count); | |
584 | if (mvm->vif_count == 1) { | |
585 | ieee80211_iterate_active_interfaces( | |
586 | mvm->hw, IEEE80211_IFACE_ITER_NORMAL, | |
587 | iwl_mvm_power_update_iterator, mvm); | |
588 | } | |
589 | iwl_mvm_mac_ctxt_release(mvm, vif); | |
590 | out_unlock: | |
591 | mutex_unlock(&mvm->mutex); | |
592 | ||
593 | return ret; | |
594 | } | |
595 | ||
38a12b5b JB |
596 | static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm, |
597 | struct ieee80211_vif *vif) | |
8ca151b5 | 598 | { |
8ca151b5 JB |
599 | u32 tfd_msk = 0, ac; |
600 | ||
601 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
602 | if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE) | |
603 | tfd_msk |= BIT(vif->hw_queue[ac]); | |
604 | ||
605 | if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE) | |
606 | tfd_msk |= BIT(vif->cab_queue); | |
607 | ||
608 | if (tfd_msk) { | |
609 | mutex_lock(&mvm->mutex); | |
610 | iwl_mvm_flush_tx_path(mvm, tfd_msk, true); | |
611 | mutex_unlock(&mvm->mutex); | |
612 | } | |
613 | ||
614 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
615 | /* | |
616 | * Flush the ROC worker which will flush the OFFCHANNEL queue. | |
617 | * We assume here that all the packets sent to the OFFCHANNEL | |
618 | * queue are sent in ROC session. | |
619 | */ | |
620 | flush_work(&mvm->roc_done_wk); | |
621 | } else { | |
622 | /* | |
623 | * By now, all the AC queues are empty. The AGG queues are | |
624 | * empty too. We already got all the Tx responses for all the | |
625 | * packets in the queues. The drain work can have been | |
626 | * triggered. Flush it. This work item takes the mutex, so kill | |
627 | * it before we take it. | |
628 | */ | |
629 | flush_work(&mvm->sta_drained_wk); | |
630 | } | |
38a12b5b JB |
631 | } |
632 | ||
633 | static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw, | |
634 | struct ieee80211_vif *vif) | |
635 | { | |
636 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
637 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
638 | ||
639 | iwl_mvm_prepare_mac_removal(mvm, vif); | |
8ca151b5 JB |
640 | |
641 | mutex_lock(&mvm->mutex); | |
642 | ||
643 | /* | |
644 | * For AP/GO interface, the tear down of the resources allocated to the | |
38a12b5b | 645 | * interface is be handled as part of the stop_ap flow. |
8ca151b5 JB |
646 | */ |
647 | if (vif->type == NL80211_IFTYPE_AP) { | |
648 | iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); | |
649 | goto out_release; | |
650 | } | |
651 | ||
652 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
653 | mvm->p2p_device_vif = NULL; | |
654 | iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta); | |
655 | iwl_mvm_binding_remove_vif(mvm, vif); | |
656 | iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt); | |
657 | mvmvif->phy_ctxt = NULL; | |
658 | } | |
659 | ||
660 | /* | |
661 | * TODO: remove this temporary code. | |
662 | * Currently MVM FW supports power management only on single MAC. | |
663 | * Check if only one additional interface remains after removing | |
664 | * current one. Update power mode on the remaining interface. | |
665 | */ | |
666 | if (mvm->vif_count) | |
667 | mvm->vif_count--; | |
668 | IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n", | |
669 | mvm->vif_count); | |
670 | if (mvm->vif_count == 1) { | |
671 | ieee80211_iterate_active_interfaces( | |
672 | mvm->hw, IEEE80211_IFACE_ITER_NORMAL, | |
673 | iwl_mvm_power_update_iterator, mvm); | |
674 | } | |
675 | ||
676 | iwl_mvm_mac_ctxt_remove(mvm, vif); | |
677 | ||
678 | out_release: | |
679 | iwl_mvm_mac_ctxt_release(mvm, vif); | |
680 | mutex_unlock(&mvm->mutex); | |
681 | } | |
682 | ||
683 | static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed) | |
684 | { | |
685 | return 0; | |
686 | } | |
687 | ||
688 | static void iwl_mvm_configure_filter(struct ieee80211_hw *hw, | |
689 | unsigned int changed_flags, | |
690 | unsigned int *total_flags, | |
691 | u64 multicast) | |
692 | { | |
693 | *total_flags = 0; | |
694 | } | |
695 | ||
696 | static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm, | |
697 | struct ieee80211_vif *vif, | |
698 | struct ieee80211_bss_conf *bss_conf, | |
699 | u32 changes) | |
700 | { | |
701 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
702 | int ret; | |
703 | ||
704 | ret = iwl_mvm_mac_ctxt_changed(mvm, vif); | |
705 | if (ret) | |
706 | IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); | |
707 | ||
708 | if (changes & BSS_CHANGED_ASSOC) { | |
709 | if (bss_conf->assoc) { | |
710 | /* add quota for this interface */ | |
711 | ret = iwl_mvm_update_quotas(mvm, vif); | |
712 | if (ret) { | |
713 | IWL_ERR(mvm, "failed to update quotas\n"); | |
714 | return; | |
715 | } | |
8ca151b5 JB |
716 | } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { |
717 | /* remove AP station now that the MAC is unassoc */ | |
718 | ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id); | |
719 | if (ret) | |
720 | IWL_ERR(mvm, "failed to remove AP station\n"); | |
721 | mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; | |
722 | /* remove quota for this interface */ | |
723 | ret = iwl_mvm_update_quotas(mvm, NULL); | |
724 | if (ret) | |
725 | IWL_ERR(mvm, "failed to update quotas\n"); | |
726 | } | |
210a544e JB |
727 | } else if (changes & BSS_CHANGED_DTIM_PERIOD) { |
728 | /* | |
729 | * We received a beacon _after_ association so | |
730 | * remove the session protection. | |
731 | */ | |
732 | iwl_mvm_remove_time_event(mvm, mvmvif, | |
733 | &mvmvif->time_event_data); | |
8ca151b5 JB |
734 | } else if (changes & BSS_CHANGED_PS) { |
735 | /* | |
736 | * TODO: remove this temporary code. | |
737 | * Currently MVM FW supports power management only on single | |
738 | * MAC. Avoid power mode update if more than one interface | |
739 | * is active. | |
740 | */ | |
741 | IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n", | |
742 | mvm->vif_count); | |
743 | if (mvm->vif_count == 1) { | |
744 | ret = iwl_mvm_power_update_mode(mvm, vif); | |
745 | if (ret) | |
746 | IWL_ERR(mvm, "failed to update power mode\n"); | |
747 | } | |
748 | } | |
749 | } | |
750 | ||
751 | static int iwl_mvm_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif) | |
752 | { | |
753 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
754 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
755 | int ret; | |
756 | ||
757 | mutex_lock(&mvm->mutex); | |
758 | ||
759 | /* Send the beacon template */ | |
760 | ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif); | |
761 | if (ret) | |
762 | goto out_unlock; | |
763 | ||
764 | /* Add the mac context */ | |
765 | ret = iwl_mvm_mac_ctxt_add(mvm, vif); | |
766 | if (ret) | |
767 | goto out_unlock; | |
768 | ||
769 | /* Perform the binding */ | |
770 | ret = iwl_mvm_binding_add_vif(mvm, vif); | |
771 | if (ret) | |
772 | goto out_remove; | |
773 | ||
774 | mvmvif->ap_active = true; | |
775 | ||
776 | /* Send the bcast station. At this stage the TBTT and DTIM time events | |
777 | * are added and applied to the scheduler */ | |
778 | ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta); | |
779 | if (ret) | |
780 | goto out_unbind; | |
781 | ||
782 | ret = iwl_mvm_update_quotas(mvm, vif); | |
783 | if (ret) | |
784 | goto out_rm_bcast; | |
785 | ||
786 | /* Need to update the P2P Device MAC */ | |
787 | if (vif->p2p && mvm->p2p_device_vif) | |
788 | iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif); | |
789 | ||
790 | mutex_unlock(&mvm->mutex); | |
791 | return 0; | |
792 | ||
793 | out_rm_bcast: | |
794 | iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta); | |
795 | out_unbind: | |
796 | iwl_mvm_binding_remove_vif(mvm, vif); | |
797 | out_remove: | |
798 | iwl_mvm_mac_ctxt_remove(mvm, vif); | |
799 | out_unlock: | |
800 | mutex_unlock(&mvm->mutex); | |
801 | return ret; | |
802 | } | |
803 | ||
804 | static void iwl_mvm_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif) | |
805 | { | |
806 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
807 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
808 | ||
38a12b5b JB |
809 | iwl_mvm_prepare_mac_removal(mvm, vif); |
810 | ||
8ca151b5 JB |
811 | mutex_lock(&mvm->mutex); |
812 | ||
813 | mvmvif->ap_active = false; | |
814 | ||
815 | /* Need to update the P2P Device MAC */ | |
816 | if (vif->p2p && mvm->p2p_device_vif) | |
817 | iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif); | |
818 | ||
819 | iwl_mvm_update_quotas(mvm, NULL); | |
820 | iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta); | |
821 | iwl_mvm_binding_remove_vif(mvm, vif); | |
822 | iwl_mvm_mac_ctxt_remove(mvm, vif); | |
823 | ||
824 | mutex_unlock(&mvm->mutex); | |
825 | } | |
826 | ||
827 | static void iwl_mvm_bss_info_changed_ap(struct iwl_mvm *mvm, | |
828 | struct ieee80211_vif *vif, | |
829 | struct ieee80211_bss_conf *bss_conf, | |
830 | u32 changes) | |
831 | { | |
832 | /* Need to send a new beacon template to the FW */ | |
833 | if (changes & BSS_CHANGED_BEACON) { | |
834 | if (iwl_mvm_mac_ctxt_beacon_changed(mvm, vif)) | |
835 | IWL_WARN(mvm, "Failed updating beacon data\n"); | |
836 | } | |
837 | } | |
838 | ||
839 | static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw, | |
840 | struct ieee80211_vif *vif, | |
841 | struct ieee80211_bss_conf *bss_conf, | |
842 | u32 changes) | |
843 | { | |
844 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
845 | ||
846 | mutex_lock(&mvm->mutex); | |
847 | ||
848 | switch (vif->type) { | |
849 | case NL80211_IFTYPE_STATION: | |
850 | iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes); | |
851 | break; | |
852 | case NL80211_IFTYPE_AP: | |
853 | iwl_mvm_bss_info_changed_ap(mvm, vif, bss_conf, changes); | |
854 | break; | |
855 | default: | |
856 | /* shouldn't happen */ | |
857 | WARN_ON_ONCE(1); | |
858 | } | |
859 | ||
860 | mutex_unlock(&mvm->mutex); | |
861 | } | |
862 | ||
863 | static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, | |
864 | struct ieee80211_vif *vif, | |
865 | struct cfg80211_scan_request *req) | |
866 | { | |
867 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
868 | int ret; | |
869 | ||
870 | if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS) | |
871 | return -EINVAL; | |
872 | ||
873 | mutex_lock(&mvm->mutex); | |
874 | ||
875 | if (mvm->scan_status == IWL_MVM_SCAN_NONE) | |
876 | ret = iwl_mvm_scan_request(mvm, vif, req); | |
877 | else | |
878 | ret = -EBUSY; | |
879 | ||
880 | mutex_unlock(&mvm->mutex); | |
881 | ||
882 | return ret; | |
883 | } | |
884 | ||
885 | static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw, | |
886 | struct ieee80211_vif *vif) | |
887 | { | |
888 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
889 | ||
890 | mutex_lock(&mvm->mutex); | |
891 | ||
892 | iwl_mvm_cancel_scan(mvm); | |
893 | ||
894 | mutex_unlock(&mvm->mutex); | |
895 | } | |
896 | ||
897 | static void | |
898 | iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw, | |
899 | struct ieee80211_sta *sta, u16 tid, | |
900 | int num_frames, | |
901 | enum ieee80211_frame_release_type reason, | |
902 | bool more_data) | |
903 | { | |
904 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
8ca151b5 JB |
905 | |
906 | /* TODO: how do we tell the fw to send frames for a specific TID */ | |
907 | ||
908 | /* | |
909 | * The fw will send EOSP notification when the last frame will be | |
910 | * transmitted. | |
911 | */ | |
9cc40712 | 912 | iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames); |
8ca151b5 JB |
913 | } |
914 | ||
915 | static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, | |
916 | struct ieee80211_vif *vif, | |
917 | enum sta_notify_cmd cmd, | |
918 | struct ieee80211_sta *sta) | |
919 | { | |
920 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
921 | struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv; | |
922 | ||
923 | switch (cmd) { | |
924 | case STA_NOTIFY_SLEEP: | |
925 | if (atomic_read(&mvmsta->pending_frames) > 0) | |
926 | ieee80211_sta_block_awake(hw, sta, true); | |
927 | /* | |
928 | * The fw updates the STA to be asleep. Tx packets on the Tx | |
929 | * queues to this station will not be transmitted. The fw will | |
930 | * send a Tx response with TX_STATUS_FAIL_DEST_PS. | |
931 | */ | |
932 | break; | |
933 | case STA_NOTIFY_AWAKE: | |
934 | if (WARN_ON(mvmsta->sta_id == IWL_INVALID_STATION)) | |
935 | break; | |
9cc40712 | 936 | iwl_mvm_sta_modify_ps_wake(mvm, sta); |
8ca151b5 JB |
937 | break; |
938 | default: | |
939 | break; | |
940 | } | |
941 | } | |
942 | ||
943 | static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw, | |
944 | struct ieee80211_vif *vif, | |
945 | struct ieee80211_sta *sta, | |
946 | enum ieee80211_sta_state old_state, | |
947 | enum ieee80211_sta_state new_state) | |
948 | { | |
949 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
950 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
951 | int ret; | |
952 | ||
953 | IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n", | |
954 | sta->addr, old_state, new_state); | |
955 | ||
956 | /* this would be a mac80211 bug ... but don't crash */ | |
957 | if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) | |
958 | return -EINVAL; | |
959 | ||
960 | /* if a STA is being removed, reuse its ID */ | |
961 | flush_work(&mvm->sta_drained_wk); | |
962 | ||
963 | mutex_lock(&mvm->mutex); | |
964 | if (old_state == IEEE80211_STA_NOTEXIST && | |
965 | new_state == IEEE80211_STA_NONE) { | |
966 | ret = iwl_mvm_add_sta(mvm, vif, sta); | |
967 | } else if (old_state == IEEE80211_STA_NONE && | |
968 | new_state == IEEE80211_STA_AUTH) { | |
969 | ret = 0; | |
970 | } else if (old_state == IEEE80211_STA_AUTH && | |
971 | new_state == IEEE80211_STA_ASSOC) { | |
7a453973 JB |
972 | ret = iwl_mvm_update_sta(mvm, vif, sta); |
973 | if (ret == 0) | |
974 | iwl_mvm_rs_rate_init(mvm, sta, | |
975 | mvmvif->phy_ctxt->channel->band); | |
8ca151b5 JB |
976 | } else if (old_state == IEEE80211_STA_ASSOC && |
977 | new_state == IEEE80211_STA_AUTHORIZED) { | |
978 | ret = 0; | |
979 | } else if (old_state == IEEE80211_STA_AUTHORIZED && | |
980 | new_state == IEEE80211_STA_ASSOC) { | |
981 | ret = 0; | |
982 | } else if (old_state == IEEE80211_STA_ASSOC && | |
983 | new_state == IEEE80211_STA_AUTH) { | |
984 | ret = 0; | |
985 | } else if (old_state == IEEE80211_STA_AUTH && | |
986 | new_state == IEEE80211_STA_NONE) { | |
987 | ret = 0; | |
988 | } else if (old_state == IEEE80211_STA_NONE && | |
989 | new_state == IEEE80211_STA_NOTEXIST) { | |
990 | ret = iwl_mvm_rm_sta(mvm, vif, sta); | |
991 | } else { | |
992 | ret = -EIO; | |
993 | } | |
994 | mutex_unlock(&mvm->mutex); | |
995 | ||
996 | return ret; | |
997 | } | |
998 | ||
999 | static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value) | |
1000 | { | |
1001 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1002 | ||
1003 | mvm->rts_threshold = value; | |
1004 | ||
1005 | return 0; | |
1006 | } | |
1007 | ||
1008 | static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw, | |
1009 | struct ieee80211_vif *vif, u16 ac, | |
1010 | const struct ieee80211_tx_queue_params *params) | |
1011 | { | |
1012 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1013 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1014 | ||
1015 | mvmvif->queue_params[ac] = *params; | |
1016 | ||
1017 | /* | |
1018 | * No need to update right away, we'll get BSS_CHANGED_QOS | |
1019 | * The exception is P2P_DEVICE interface which needs immediate update. | |
1020 | */ | |
1021 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
1022 | int ret; | |
1023 | ||
1024 | mutex_lock(&mvm->mutex); | |
1025 | ret = iwl_mvm_mac_ctxt_changed(mvm, vif); | |
1026 | mutex_unlock(&mvm->mutex); | |
1027 | return ret; | |
1028 | } | |
1029 | return 0; | |
1030 | } | |
1031 | ||
1032 | static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw, | |
1033 | struct ieee80211_vif *vif) | |
1034 | { | |
1035 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1036 | u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS, | |
1037 | 200 + vif->bss_conf.beacon_int); | |
1038 | u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS, | |
1039 | 100 + vif->bss_conf.beacon_int); | |
1040 | ||
1041 | if (WARN_ON_ONCE(vif->bss_conf.assoc)) | |
1042 | return; | |
1043 | ||
1044 | mutex_lock(&mvm->mutex); | |
1045 | /* Try really hard to protect the session and hear a beacon */ | |
1046 | iwl_mvm_protect_session(mvm, vif, duration, min_duration); | |
1047 | mutex_unlock(&mvm->mutex); | |
1048 | } | |
1049 | ||
1050 | static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, | |
1051 | enum set_key_cmd cmd, | |
1052 | struct ieee80211_vif *vif, | |
1053 | struct ieee80211_sta *sta, | |
1054 | struct ieee80211_key_conf *key) | |
1055 | { | |
1056 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1057 | int ret; | |
1058 | ||
1059 | if (iwlwifi_mod_params.sw_crypto) { | |
1060 | IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n"); | |
1061 | return -EOPNOTSUPP; | |
1062 | } | |
1063 | ||
1064 | switch (key->cipher) { | |
1065 | case WLAN_CIPHER_SUITE_TKIP: | |
1066 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; | |
1067 | /* fall-through */ | |
1068 | case WLAN_CIPHER_SUITE_CCMP: | |
1069 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; | |
1070 | break; | |
1071 | case WLAN_CIPHER_SUITE_AES_CMAC: | |
1072 | WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE)); | |
1073 | break; | |
1074 | case WLAN_CIPHER_SUITE_WEP40: | |
1075 | case WLAN_CIPHER_SUITE_WEP104: | |
1076 | /* | |
1077 | * Support for TX only, at least for now, so accept | |
1078 | * the key and do nothing else. Then mac80211 will | |
1079 | * pass it for TX but we don't have to use it for RX. | |
1080 | */ | |
1081 | return 0; | |
1082 | default: | |
1083 | return -EOPNOTSUPP; | |
1084 | } | |
1085 | ||
1086 | mutex_lock(&mvm->mutex); | |
1087 | ||
1088 | switch (cmd) { | |
1089 | case SET_KEY: | |
6caffd4f JB |
1090 | if (vif->type == NL80211_IFTYPE_AP && !sta) { |
1091 | /* GTK on AP interface is a TX-only key, return 0 */ | |
1092 | ret = 0; | |
1093 | key->hw_key_idx = STA_KEY_IDX_INVALID; | |
1094 | break; | |
1095 | } | |
1096 | ||
8ca151b5 JB |
1097 | IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n"); |
1098 | ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false); | |
1099 | if (ret) { | |
1100 | IWL_WARN(mvm, "set key failed\n"); | |
1101 | /* | |
1102 | * can't add key for RX, but we don't need it | |
1103 | * in the device for TX so still return 0 | |
1104 | */ | |
6caffd4f | 1105 | key->hw_key_idx = STA_KEY_IDX_INVALID; |
8ca151b5 JB |
1106 | ret = 0; |
1107 | } | |
1108 | ||
1109 | break; | |
1110 | case DISABLE_KEY: | |
6caffd4f JB |
1111 | if (key->hw_key_idx == STA_KEY_IDX_INVALID) { |
1112 | ret = 0; | |
1113 | break; | |
1114 | } | |
1115 | ||
8ca151b5 JB |
1116 | IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n"); |
1117 | ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key); | |
1118 | break; | |
1119 | default: | |
1120 | ret = -EINVAL; | |
1121 | } | |
1122 | ||
1123 | mutex_unlock(&mvm->mutex); | |
1124 | return ret; | |
1125 | } | |
1126 | ||
1127 | static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw, | |
1128 | struct ieee80211_vif *vif, | |
1129 | struct ieee80211_key_conf *keyconf, | |
1130 | struct ieee80211_sta *sta, | |
1131 | u32 iv32, u16 *phase1key) | |
1132 | { | |
1133 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1134 | ||
1135 | iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key); | |
1136 | } | |
1137 | ||
1138 | ||
1139 | static int iwl_mvm_roc(struct ieee80211_hw *hw, | |
1140 | struct ieee80211_vif *vif, | |
1141 | struct ieee80211_channel *channel, | |
1142 | int duration) | |
1143 | { | |
1144 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1145 | struct cfg80211_chan_def chandef; | |
1146 | int ret; | |
1147 | ||
1148 | if (vif->type != NL80211_IFTYPE_P2P_DEVICE) { | |
1149 | IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type); | |
1150 | return -EINVAL; | |
1151 | } | |
1152 | ||
1153 | IWL_DEBUG_MAC80211(mvm, "enter (%d, %d)\n", channel->hw_value, | |
1154 | duration); | |
1155 | ||
1156 | mutex_lock(&mvm->mutex); | |
1157 | ||
1158 | cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT); | |
1159 | ret = iwl_mvm_phy_ctxt_changed(mvm, &mvm->phy_ctxt_roc, | |
1160 | &chandef, 1, 1); | |
1161 | ||
1162 | /* Schedule the time events */ | |
1163 | ret = iwl_mvm_start_p2p_roc(mvm, vif, duration); | |
1164 | ||
1165 | mutex_unlock(&mvm->mutex); | |
1166 | IWL_DEBUG_MAC80211(mvm, "leave\n"); | |
1167 | ||
1168 | return ret; | |
1169 | } | |
1170 | ||
1171 | static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw) | |
1172 | { | |
1173 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1174 | ||
1175 | IWL_DEBUG_MAC80211(mvm, "enter\n"); | |
1176 | ||
1177 | mutex_lock(&mvm->mutex); | |
1178 | iwl_mvm_stop_p2p_roc(mvm); | |
1179 | mutex_unlock(&mvm->mutex); | |
1180 | ||
1181 | IWL_DEBUG_MAC80211(mvm, "leave\n"); | |
1182 | return 0; | |
1183 | } | |
1184 | ||
1185 | static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw, | |
1186 | struct ieee80211_chanctx_conf *ctx) | |
1187 | { | |
1188 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1189 | struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv; | |
1190 | int ret; | |
1191 | ||
1192 | mutex_lock(&mvm->mutex); | |
1193 | ||
1194 | IWL_DEBUG_MAC80211(mvm, "Add PHY context\n"); | |
1195 | ret = iwl_mvm_phy_ctxt_add(mvm, phy_ctxt, &ctx->def, | |
1196 | ctx->rx_chains_static, | |
1197 | ctx->rx_chains_dynamic); | |
1198 | mutex_unlock(&mvm->mutex); | |
1199 | return ret; | |
1200 | } | |
1201 | ||
1202 | static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw, | |
1203 | struct ieee80211_chanctx_conf *ctx) | |
1204 | { | |
1205 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1206 | struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv; | |
1207 | ||
1208 | mutex_lock(&mvm->mutex); | |
1209 | iwl_mvm_phy_ctxt_remove(mvm, phy_ctxt); | |
1210 | mutex_unlock(&mvm->mutex); | |
1211 | } | |
1212 | ||
1213 | static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw, | |
1214 | struct ieee80211_chanctx_conf *ctx, | |
1215 | u32 changed) | |
1216 | { | |
1217 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1218 | struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv; | |
1219 | ||
1220 | mutex_lock(&mvm->mutex); | |
1221 | iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->def, | |
1222 | ctx->rx_chains_static, | |
1223 | ctx->rx_chains_dynamic); | |
1224 | mutex_unlock(&mvm->mutex); | |
1225 | } | |
1226 | ||
1227 | static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw, | |
1228 | struct ieee80211_vif *vif, | |
1229 | struct ieee80211_chanctx_conf *ctx) | |
1230 | { | |
1231 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1232 | struct iwl_mvm_phy_ctxt *phyctx = (void *)ctx->drv_priv; | |
1233 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1234 | int ret; | |
1235 | ||
1236 | mutex_lock(&mvm->mutex); | |
1237 | ||
1238 | mvmvif->phy_ctxt = phyctx; | |
1239 | ||
1240 | switch (vif->type) { | |
1241 | case NL80211_IFTYPE_AP: | |
1242 | /* | |
1243 | * The AP binding flow is handled as part of the start_ap flow | |
1244 | * (in bss_info_changed). | |
1245 | */ | |
1246 | ret = 0; | |
1247 | goto out_unlock; | |
1248 | case NL80211_IFTYPE_STATION: | |
1249 | case NL80211_IFTYPE_ADHOC: | |
1250 | case NL80211_IFTYPE_MONITOR: | |
1251 | break; | |
1252 | default: | |
1253 | ret = -EINVAL; | |
1254 | goto out_unlock; | |
1255 | } | |
1256 | ||
1257 | ret = iwl_mvm_binding_add_vif(mvm, vif); | |
1258 | if (ret) | |
1259 | goto out_unlock; | |
1260 | ||
1261 | /* | |
1262 | * Setting the quota at this stage is only required for monitor | |
1263 | * interfaces. For the other types, the bss_info changed flow | |
1264 | * will handle quota settings. | |
1265 | */ | |
1266 | if (vif->type == NL80211_IFTYPE_MONITOR) { | |
1e1391ca | 1267 | mvmvif->monitor_active = true; |
8ca151b5 JB |
1268 | ret = iwl_mvm_update_quotas(mvm, vif); |
1269 | if (ret) | |
1270 | goto out_remove_binding; | |
1271 | } | |
1272 | ||
1273 | goto out_unlock; | |
1274 | ||
1275 | out_remove_binding: | |
1276 | iwl_mvm_binding_remove_vif(mvm, vif); | |
1277 | out_unlock: | |
1278 | mutex_unlock(&mvm->mutex); | |
1279 | if (ret) | |
1280 | mvmvif->phy_ctxt = NULL; | |
1281 | return ret; | |
1282 | } | |
1283 | ||
1284 | static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw, | |
1285 | struct ieee80211_vif *vif, | |
1286 | struct ieee80211_chanctx_conf *ctx) | |
1287 | { | |
1288 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1289 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1290 | ||
1291 | mutex_lock(&mvm->mutex); | |
1292 | ||
1293 | iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data); | |
1294 | ||
1295 | if (vif->type == NL80211_IFTYPE_AP) | |
1296 | goto out_unlock; | |
1297 | ||
8ca151b5 JB |
1298 | switch (vif->type) { |
1299 | case NL80211_IFTYPE_MONITOR: | |
1e1391ca IP |
1300 | mvmvif->monitor_active = false; |
1301 | iwl_mvm_update_quotas(mvm, NULL); | |
8ca151b5 JB |
1302 | break; |
1303 | default: | |
1304 | break; | |
1305 | } | |
1306 | ||
1e1391ca | 1307 | iwl_mvm_binding_remove_vif(mvm, vif); |
8ca151b5 JB |
1308 | out_unlock: |
1309 | mvmvif->phy_ctxt = NULL; | |
1310 | mutex_unlock(&mvm->mutex); | |
1311 | } | |
1312 | ||
1313 | static int iwl_mvm_set_tim(struct ieee80211_hw *hw, | |
1314 | struct ieee80211_sta *sta, | |
1315 | bool set) | |
1316 | { | |
1317 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1318 | struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv; | |
1319 | ||
1320 | if (!mvm_sta || !mvm_sta->vif) { | |
1321 | IWL_ERR(mvm, "Station is not associated to a vif\n"); | |
1322 | return -EINVAL; | |
1323 | } | |
1324 | ||
1325 | return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif); | |
1326 | } | |
1327 | ||
1328 | struct ieee80211_ops iwl_mvm_hw_ops = { | |
1329 | .tx = iwl_mvm_mac_tx, | |
1330 | .ampdu_action = iwl_mvm_mac_ampdu_action, | |
1331 | .start = iwl_mvm_mac_start, | |
1332 | .restart_complete = iwl_mvm_mac_restart_complete, | |
1333 | .stop = iwl_mvm_mac_stop, | |
1334 | .add_interface = iwl_mvm_mac_add_interface, | |
1335 | .remove_interface = iwl_mvm_mac_remove_interface, | |
1336 | .config = iwl_mvm_mac_config, | |
1337 | .configure_filter = iwl_mvm_configure_filter, | |
1338 | .bss_info_changed = iwl_mvm_bss_info_changed, | |
1339 | .hw_scan = iwl_mvm_mac_hw_scan, | |
1340 | .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan, | |
1341 | .sta_state = iwl_mvm_mac_sta_state, | |
1342 | .sta_notify = iwl_mvm_mac_sta_notify, | |
1343 | .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames, | |
1344 | .set_rts_threshold = iwl_mvm_mac_set_rts_threshold, | |
1345 | .conf_tx = iwl_mvm_mac_conf_tx, | |
1346 | .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx, | |
1347 | .set_key = iwl_mvm_mac_set_key, | |
1348 | .update_tkip_key = iwl_mvm_mac_update_tkip_key, | |
1349 | .remain_on_channel = iwl_mvm_roc, | |
1350 | .cancel_remain_on_channel = iwl_mvm_cancel_roc, | |
1351 | ||
1352 | .add_chanctx = iwl_mvm_add_chanctx, | |
1353 | .remove_chanctx = iwl_mvm_remove_chanctx, | |
1354 | .change_chanctx = iwl_mvm_change_chanctx, | |
1355 | .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx, | |
1356 | .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx, | |
1357 | ||
1358 | .start_ap = iwl_mvm_start_ap, | |
1359 | .stop_ap = iwl_mvm_stop_ap, | |
1360 | ||
1361 | .set_tim = iwl_mvm_set_tim, | |
1362 | ||
1363 | #ifdef CONFIG_PM_SLEEP | |
1364 | /* look at d3.c */ | |
1365 | .suspend = iwl_mvm_suspend, | |
1366 | .resume = iwl_mvm_resume, | |
1367 | .set_wakeup = iwl_mvm_set_wakeup, | |
1368 | .set_rekey_data = iwl_mvm_set_rekey_data, | |
1369 | #if IS_ENABLED(CONFIG_IPV6) | |
1370 | .ipv6_addr_change = iwl_mvm_ipv6_addr_change, | |
1371 | #endif | |
1372 | .set_default_unicast_key = iwl_mvm_set_default_unicast_key, | |
1373 | #endif | |
1374 | }; |