projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi...
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / wireless / iwlwifi / dvm / mac80211.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/slab.h>
33 #include <linux/dma-mapping.h>
34 #include <linux/delay.h>
35 #include <linux/sched.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/etherdevice.h>
39 #include <linux/if_arp.h>
40
41 #include <net/ieee80211_radiotap.h>
42 #include <net/mac80211.h>
43
44 #include <asm/div64.h>
45
46 #include "iwl-io.h"
47 #include "iwl-trans.h"
48 #include "iwl-op-mode.h"
49 #include "iwl-modparams.h"
50
51 #include "dev.h"
52 #include "calib.h"
53 #include "agn.h"
54
55 /*****************************************************************************
56 *
57 * mac80211 entry point functions
58 *
59 *****************************************************************************/
60
61 static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
62 {
63 .max = 1,
64 .types = BIT(NL80211_IFTYPE_STATION),
65 },
66 {
67 .max = 1,
68 .types = BIT(NL80211_IFTYPE_AP),
69 },
70 };
71
72 static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
73 {
74 .max = 2,
75 .types = BIT(NL80211_IFTYPE_STATION),
76 },
77 };
78
79 static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
80 {
81 .max = 1,
82 .types = BIT(NL80211_IFTYPE_STATION),
83 },
84 {
85 .max = 1,
86 .types = BIT(NL80211_IFTYPE_P2P_GO) |
87 BIT(NL80211_IFTYPE_AP),
88 },
89 };
90
91 static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
92 {
93 .max = 2,
94 .types = BIT(NL80211_IFTYPE_STATION),
95 },
96 {
97 .max = 1,
98 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
99 },
100 };
101
102 static const struct ieee80211_iface_combination
103 iwlagn_iface_combinations_dualmode[] = {
104 { .num_different_channels = 1,
105 .max_interfaces = 2,
106 .beacon_int_infra_match = true,
107 .limits = iwlagn_sta_ap_limits,
108 .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
109 },
110 { .num_different_channels = 1,
111 .max_interfaces = 2,
112 .limits = iwlagn_2sta_limits,
113 .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
114 },
115 };
116
117 static const struct ieee80211_iface_combination
118 iwlagn_iface_combinations_p2p[] = {
119 { .num_different_channels = 1,
120 .max_interfaces = 2,
121 .beacon_int_infra_match = true,
122 .limits = iwlagn_p2p_sta_go_limits,
123 .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
124 },
125 { .num_different_channels = 1,
126 .max_interfaces = 2,
127 .limits = iwlagn_p2p_2sta_limits,
128 .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
129 },
130 };
131
132 /*
133 * Not a mac80211 entry point function, but it fits in with all the
134 * other mac80211 functions grouped here.
135 */
136 int iwlagn_mac_setup_register(struct iwl_priv *priv,
137 const struct iwl_ucode_capabilities *capa)
138 {
139 int ret;
140 struct ieee80211_hw *hw = priv->hw;
141 struct iwl_rxon_context *ctx;
142
143 hw->rate_control_algorithm = "iwl-agn-rs";
144
145 /* Tell mac80211 our characteristics */
146 hw->flags = IEEE80211_HW_SIGNAL_DBM |
147 IEEE80211_HW_AMPDU_AGGREGATION |
148 IEEE80211_HW_NEED_DTIM_PERIOD |
149 IEEE80211_HW_SPECTRUM_MGMT |
150 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
151 IEEE80211_HW_QUEUE_CONTROL |
152 IEEE80211_HW_SUPPORTS_PS |
153 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
154 IEEE80211_HW_WANT_MONITOR_VIF |
155 IEEE80211_HW_SCAN_WHILE_IDLE;
156
157 hw->offchannel_tx_hw_queue = IWL_AUX_QUEUE;
158 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FMT;
159
160 /*
161 * Including the following line will crash some AP's. This
162 * workaround removes the stimulus which causes the crash until
163 * the AP software can be fixed.
164 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
165 */
166
167 if (priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE)
168 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
169 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
170
171 #ifndef CONFIG_IWLWIFI_EXPERIMENTAL_MFP
172 /* enable 11w if the uCode advertise */
173 if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
174 #endif /* !CONFIG_IWLWIFI_EXPERIMENTAL_MFP */
175 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
176
177 hw->sta_data_size = sizeof(struct iwl_station_priv);
178 hw->vif_data_size = sizeof(struct iwl_vif_priv);
179
180 for_each_context(priv, ctx) {
181 hw->wiphy->interface_modes |= ctx->interface_modes;
182 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
183 }
184
185 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
186
187 if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
188 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
189 hw->wiphy->n_iface_combinations =
190 ARRAY_SIZE(iwlagn_iface_combinations_p2p);
191 } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
192 hw->wiphy->iface_combinations =
193 iwlagn_iface_combinations_dualmode;
194 hw->wiphy->n_iface_combinations =
195 ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
196 }
197
198 hw->wiphy->max_remain_on_channel_duration = 1000;
199
200 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
201 WIPHY_FLAG_DISABLE_BEACON_HINTS |
202 WIPHY_FLAG_IBSS_RSN;
203
204 #ifdef CONFIG_PM_SLEEP
205 if (priv->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
206 priv->trans->ops->wowlan_suspend &&
207 device_can_wakeup(priv->trans->dev)) {
208 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
209 WIPHY_WOWLAN_DISCONNECT |
210 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
211 WIPHY_WOWLAN_RFKILL_RELEASE;
212 if (!iwlwifi_mod_params.sw_crypto)
213 hw->wiphy->wowlan.flags |=
214 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
215 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
216
217 hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
218 hw->wiphy->wowlan.pattern_min_len =
219 IWLAGN_WOWLAN_MIN_PATTERN_LEN;
220 hw->wiphy->wowlan.pattern_max_len =
221 IWLAGN_WOWLAN_MAX_PATTERN_LEN;
222 }
223 #endif
224
225 if (iwlwifi_mod_params.power_save)
226 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
227 else
228 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
229
230 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
231 /* we create the 802.11 header and a max-length SSID element */
232 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 34;
233
234 /*
235 * We don't use all queues: 4 and 9 are unused and any
236 * aggregation queue gets mapped down to the AC queue.
237 */
238 hw->queues = IWLAGN_FIRST_AMPDU_QUEUE;
239
240 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
241
242 if (priv->eeprom_data->bands[IEEE80211_BAND_2GHZ].n_channels)
243 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
244 &priv->eeprom_data->bands[IEEE80211_BAND_2GHZ];
245 if (priv->eeprom_data->bands[IEEE80211_BAND_5GHZ].n_channels)
246 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
247 &priv->eeprom_data->bands[IEEE80211_BAND_5GHZ];
248
249 hw->wiphy->hw_version = priv->trans->hw_id;
250
251 iwl_leds_init(priv);
252
253 ret = ieee80211_register_hw(priv->hw);
254 if (ret) {
255 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
256 iwl_leds_exit(priv);
257 return ret;
258 }
259 priv->mac80211_registered = 1;
260
261 return 0;
262 }
263
264 void iwlagn_mac_unregister(struct iwl_priv *priv)
265 {
266 if (!priv->mac80211_registered)
267 return;
268 iwl_leds_exit(priv);
269 ieee80211_unregister_hw(priv->hw);
270 priv->mac80211_registered = 0;
271 }
272
273 static int __iwl_up(struct iwl_priv *priv)
274 {
275 struct iwl_rxon_context *ctx;
276 int ret;
277
278 lockdep_assert_held(&priv->mutex);
279
280 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
281 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
282 return -EIO;
283 }
284
285 for_each_context(priv, ctx) {
286 ret = iwlagn_alloc_bcast_station(priv, ctx);
287 if (ret) {
288 iwl_dealloc_bcast_stations(priv);
289 return ret;
290 }
291 }
292
293 ret = iwl_run_init_ucode(priv);
294 if (ret) {
295 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
296 goto error;
297 }
298
299 ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_REGULAR);
300 if (ret) {
301 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
302 goto error;
303 }
304
305 ret = iwl_alive_start(priv);
306 if (ret)
307 goto error;
308 return 0;
309
310 error:
311 set_bit(STATUS_EXIT_PENDING, &priv->status);
312 iwl_down(priv);
313 clear_bit(STATUS_EXIT_PENDING, &priv->status);
314
315 IWL_ERR(priv, "Unable to initialize device.\n");
316 return ret;
317 }
318
319 static int iwlagn_mac_start(struct ieee80211_hw *hw)
320 {
321 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
322 int ret;
323
324 IWL_DEBUG_MAC80211(priv, "enter\n");
325
326 /* we should be verifying the device is ready to be opened */
327 mutex_lock(&priv->mutex);
328 ret = __iwl_up(priv);
329 mutex_unlock(&priv->mutex);
330 if (ret)
331 return ret;
332
333 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
334
335 /* Now we should be done, and the READY bit should be set. */
336 if (WARN_ON(!test_bit(STATUS_READY, &priv->status)))
337 ret = -EIO;
338
339 iwlagn_led_enable(priv);
340
341 priv->is_open = 1;
342 IWL_DEBUG_MAC80211(priv, "leave\n");
343 return 0;
344 }
345
346 static void iwlagn_mac_stop(struct ieee80211_hw *hw)
347 {
348 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
349
350 IWL_DEBUG_MAC80211(priv, "enter\n");
351
352 if (!priv->is_open)
353 return;
354
355 priv->is_open = 0;
356
357 mutex_lock(&priv->mutex);
358 iwl_down(priv);
359 mutex_unlock(&priv->mutex);
360
361 iwl_cancel_deferred_work(priv);
362
363 flush_workqueue(priv->workqueue);
364
365 /* User space software may expect getting rfkill changes
366 * even if interface is down, trans->down will leave the RF
367 * kill interrupt enabled
368 */
369 iwl_trans_stop_hw(priv->trans, false);
370
371 IWL_DEBUG_MAC80211(priv, "leave\n");
372 }
373
374 static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
375 struct ieee80211_vif *vif,
376 struct cfg80211_gtk_rekey_data *data)
377 {
378 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
379
380 if (iwlwifi_mod_params.sw_crypto)
381 return;
382
383 IWL_DEBUG_MAC80211(priv, "enter\n");
384 mutex_lock(&priv->mutex);
385
386 if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
387 goto out;
388
389 memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
390 memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
391 priv->replay_ctr =
392 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
393 priv->have_rekey_data = true;
394
395 out:
396 mutex_unlock(&priv->mutex);
397 IWL_DEBUG_MAC80211(priv, "leave\n");
398 }
399
400 #ifdef CONFIG_PM_SLEEP
401
402 static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
403 struct cfg80211_wowlan *wowlan)
404 {
405 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
406 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
407 int ret;
408
409 if (WARN_ON(!wowlan))
410 return -EINVAL;
411
412 IWL_DEBUG_MAC80211(priv, "enter\n");
413 mutex_lock(&priv->mutex);
414
415 /* Don't attempt WoWLAN when not associated, tear down instead. */
416 if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
417 !iwl_is_associated_ctx(ctx)) {
418 ret = 1;
419 goto out;
420 }
421
422 ret = iwlagn_suspend(priv, wowlan);
423 if (ret)
424 goto error;
425
426 iwl_trans_wowlan_suspend(priv->trans);
427
428 goto out;
429
430 error:
431 priv->wowlan = false;
432 iwlagn_prepare_restart(priv);
433 ieee80211_restart_hw(priv->hw);
434 out:
435 mutex_unlock(&priv->mutex);
436 IWL_DEBUG_MAC80211(priv, "leave\n");
437
438 return ret;
439 }
440
441 static int iwlagn_mac_resume(struct ieee80211_hw *hw)
442 {
443 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
444 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
445 struct ieee80211_vif *vif;
446 unsigned long flags;
447 u32 base, status = 0xffffffff;
448 int ret = -EIO;
449
450 IWL_DEBUG_MAC80211(priv, "enter\n");
451 mutex_lock(&priv->mutex);
452
453 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
454 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
455
456 base = priv->device_pointers.error_event_table;
457 if (iwlagn_hw_valid_rtc_data_addr(base)) {
458 spin_lock_irqsave(&priv->trans->reg_lock, flags);
459 ret = iwl_grab_nic_access_silent(priv->trans);
460 if (likely(ret == 0)) {
461 iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, base);
462 status = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
463 iwl_release_nic_access(priv->trans);
464 }
465 spin_unlock_irqrestore(&priv->trans->reg_lock, flags);
466
467 #ifdef CONFIG_IWLWIFI_DEBUGFS
468 if (ret == 0) {
469 const struct fw_img *img;
470
471 img = &(priv->fw->img[IWL_UCODE_WOWLAN]);
472 if (!priv->wowlan_sram) {
473 priv->wowlan_sram =
474 kzalloc(img->sec[IWL_UCODE_SECTION_DATA].len,
475 GFP_KERNEL);
476 }
477
478 if (priv->wowlan_sram)
479 _iwl_read_targ_mem_words(
480 priv->trans, 0x800000,
481 priv->wowlan_sram,
482 img->sec[IWL_UCODE_SECTION_DATA].len / 4);
483 }
484 #endif
485 }
486
487 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
488 vif = ctx->vif;
489
490 priv->wowlan = false;
491
492 iwlagn_prepare_restart(priv);
493
494 memset((void *)&ctx->active, 0, sizeof(ctx->active));
495 iwl_connection_init_rx_config(priv, ctx);
496 iwlagn_set_rxon_chain(priv, ctx);
497
498 mutex_unlock(&priv->mutex);
499 IWL_DEBUG_MAC80211(priv, "leave\n");
500
501 ieee80211_resume_disconnect(vif);
502
503 return 1;
504 }
505
506 static void iwlagn_mac_set_wakeup(struct ieee80211_hw *hw, bool enabled)
507 {
508 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
509
510 device_set_wakeup_enable(priv->trans->dev, enabled);
511 }
512 #endif
513
514 static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
515 {
516 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
517
518 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
519 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
520
521 if (iwlagn_tx_skb(priv, skb))
522 dev_kfree_skb_any(skb);
523 }
524
525 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
526 struct ieee80211_vif *vif,
527 struct ieee80211_key_conf *keyconf,
528 struct ieee80211_sta *sta,
529 u32 iv32, u16 *phase1key)
530 {
531 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
532
533 iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
534 }
535
536 static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
537 struct ieee80211_vif *vif,
538 struct ieee80211_sta *sta,
539 struct ieee80211_key_conf *key)
540 {
541 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
542 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
543 struct iwl_rxon_context *ctx = vif_priv->ctx;
544 int ret;
545 bool is_default_wep_key = false;
546
547 IWL_DEBUG_MAC80211(priv, "enter\n");
548
549 if (iwlwifi_mod_params.sw_crypto) {
550 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
551 return -EOPNOTSUPP;
552 }
553
554 switch (key->cipher) {
555 case WLAN_CIPHER_SUITE_TKIP:
556 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
557 /* fall through */
558 case WLAN_CIPHER_SUITE_CCMP:
559 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
560 break;
561 default:
562 break;
563 }
564
565 /*
566 * We could program these keys into the hardware as well, but we
567 * don't expect much multicast traffic in IBSS and having keys
568 * for more stations is probably more useful.
569 *
570 * Mark key TX-only and return 0.
571 */
572 if (vif->type == NL80211_IFTYPE_ADHOC &&
573 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
574 key->hw_key_idx = WEP_INVALID_OFFSET;
575 return 0;
576 }
577
578 /* If they key was TX-only, accept deletion */
579 if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
580 return 0;
581
582 mutex_lock(&priv->mutex);
583 iwl_scan_cancel_timeout(priv, 100);
584
585 BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
586
587 /*
588 * If we are getting WEP group key and we didn't receive any key mapping
589 * so far, we are in legacy wep mode (group key only), otherwise we are
590 * in 1X mode.
591 * In legacy wep mode, we use another host command to the uCode.
592 */
593 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
594 key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
595 if (cmd == SET_KEY)
596 is_default_wep_key = !ctx->key_mapping_keys;
597 else
598 is_default_wep_key =
599 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
600 }
601
602
603 switch (cmd) {
604 case SET_KEY:
605 if (is_default_wep_key) {
606 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
607 break;
608 }
609 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
610 if (ret) {
611 /*
612 * can't add key for RX, but we don't need it
613 * in the device for TX so still return 0
614 */
615 ret = 0;
616 key->hw_key_idx = WEP_INVALID_OFFSET;
617 }
618
619 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
620 break;
621 case DISABLE_KEY:
622 if (is_default_wep_key)
623 ret = iwl_remove_default_wep_key(priv, ctx, key);
624 else
625 ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
626
627 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
628 break;
629 default:
630 ret = -EINVAL;
631 }
632
633 mutex_unlock(&priv->mutex);
634 IWL_DEBUG_MAC80211(priv, "leave\n");
635
636 return ret;
637 }
638
639 static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
640 struct ieee80211_vif *vif,
641 enum ieee80211_ampdu_mlme_action action,
642 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
643 u8 buf_size)
644 {
645 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
646 int ret = -EINVAL;
647 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
648
649 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
650 sta->addr, tid);
651
652 if (!(priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE))
653 return -EACCES;
654
655 IWL_DEBUG_MAC80211(priv, "enter\n");
656 mutex_lock(&priv->mutex);
657
658 switch (action) {
659 case IEEE80211_AMPDU_RX_START:
660 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
661 break;
662 IWL_DEBUG_HT(priv, "start Rx\n");
663 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
664 break;
665 case IEEE80211_AMPDU_RX_STOP:
666 IWL_DEBUG_HT(priv, "stop Rx\n");
667 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
668 break;
669 case IEEE80211_AMPDU_TX_START:
670 if (!priv->trans->ops->txq_enable)
671 break;
672 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
673 break;
674 IWL_DEBUG_HT(priv, "start Tx\n");
675 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
676 break;
677 case IEEE80211_AMPDU_TX_STOP:
678 IWL_DEBUG_HT(priv, "stop Tx\n");
679 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
680 if ((ret == 0) && (priv->agg_tids_count > 0)) {
681 priv->agg_tids_count--;
682 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
683 priv->agg_tids_count);
684 }
685 if (!priv->agg_tids_count &&
686 priv->hw_params.use_rts_for_aggregation) {
687 /*
688 * switch off RTS/CTS if it was previously enabled
689 */
690 sta_priv->lq_sta.lq.general_params.flags &=
691 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
692 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
693 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
694 }
695 break;
696 case IEEE80211_AMPDU_TX_OPERATIONAL:
697 ret = iwlagn_tx_agg_oper(priv, vif, sta, tid, buf_size);
698 break;
699 }
700 mutex_unlock(&priv->mutex);
701 IWL_DEBUG_MAC80211(priv, "leave\n");
702 return ret;
703 }
704
705 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
706 struct ieee80211_vif *vif,
707 struct ieee80211_sta *sta)
708 {
709 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
710 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
711 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
712 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
713 int ret;
714 u8 sta_id;
715
716 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
717 sta->addr);
718 sta_priv->sta_id = IWL_INVALID_STATION;
719
720 atomic_set(&sta_priv->pending_frames, 0);
721 if (vif->type == NL80211_IFTYPE_AP)
722 sta_priv->client = true;
723
724 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
725 is_ap, sta, &sta_id);
726 if (ret) {
727 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
728 sta->addr, ret);
729 /* Should we return success if return code is EEXIST ? */
730 return ret;
731 }
732
733 sta_priv->sta_id = sta_id;
734
735 return 0;
736 }
737
738 static int iwlagn_mac_sta_remove(struct ieee80211_hw *hw,
739 struct ieee80211_vif *vif,
740 struct ieee80211_sta *sta)
741 {
742 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
743 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
744 int ret;
745
746 IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n", sta->addr);
747
748 if (vif->type == NL80211_IFTYPE_STATION) {
749 /*
750 * Station will be removed from device when the RXON
751 * is set to unassociated -- just deactivate it here
752 * to avoid re-programming it.
753 */
754 ret = 0;
755 iwl_deactivate_station(priv, sta_priv->sta_id, sta->addr);
756 } else {
757 ret = iwl_remove_station(priv, sta_priv->sta_id, sta->addr);
758 if (ret)
759 IWL_DEBUG_QUIET_RFKILL(priv,
760 "Error removing station %pM\n", sta->addr);
761 }
762 return ret;
763 }
764
765 static int iwlagn_mac_sta_state(struct ieee80211_hw *hw,
766 struct ieee80211_vif *vif,
767 struct ieee80211_sta *sta,
768 enum ieee80211_sta_state old_state,
769 enum ieee80211_sta_state new_state)
770 {
771 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
772 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
773 enum {
774 NONE, ADD, REMOVE, HT_RATE_INIT, ADD_RATE_INIT,
775 } op = NONE;
776 int ret;
777
778 IWL_DEBUG_MAC80211(priv, "station %pM state change %d->%d\n",
779 sta->addr, old_state, new_state);
780
781 mutex_lock(&priv->mutex);
782 if (vif->type == NL80211_IFTYPE_STATION) {
783 if (old_state == IEEE80211_STA_NOTEXIST &&
784 new_state == IEEE80211_STA_NONE)
785 op = ADD;
786 else if (old_state == IEEE80211_STA_NONE &&
787 new_state == IEEE80211_STA_NOTEXIST)
788 op = REMOVE;
789 else if (old_state == IEEE80211_STA_AUTH &&
790 new_state == IEEE80211_STA_ASSOC)
791 op = HT_RATE_INIT;
792 } else {
793 if (old_state == IEEE80211_STA_AUTH &&
794 new_state == IEEE80211_STA_ASSOC)
795 op = ADD_RATE_INIT;
796 else if (old_state == IEEE80211_STA_ASSOC &&
797 new_state == IEEE80211_STA_AUTH)
798 op = REMOVE;
799 }
800
801 switch (op) {
802 case ADD:
803 ret = iwlagn_mac_sta_add(hw, vif, sta);
804 break;
805 case REMOVE:
806 ret = iwlagn_mac_sta_remove(hw, vif, sta);
807 break;
808 case ADD_RATE_INIT:
809 ret = iwlagn_mac_sta_add(hw, vif, sta);
810 if (ret)
811 break;
812 /* Initialize rate scaling */
813 IWL_DEBUG_INFO(priv,
814 "Initializing rate scaling for station %pM\n",
815 sta->addr);
816 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
817 ret = 0;
818 break;
819 case HT_RATE_INIT:
820 /* Initialize rate scaling */
821 ret = iwl_sta_update_ht(priv, vif_priv->ctx, sta);
822 if (ret)
823 break;
824 IWL_DEBUG_INFO(priv,
825 "Initializing rate scaling for station %pM\n",
826 sta->addr);
827 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
828 ret = 0;
829 break;
830 default:
831 ret = 0;
832 break;
833 }
834
835 /*
836 * mac80211 might WARN if we fail, but due the way we
837 * (badly) handle hard rfkill, we might fail here
838 */
839 if (iwl_is_rfkill(priv))
840 ret = 0;
841
842 mutex_unlock(&priv->mutex);
843 IWL_DEBUG_MAC80211(priv, "leave\n");
844
845 return ret;
846 }
847
848 static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
849 struct ieee80211_channel_switch *ch_switch)
850 {
851 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
852 struct ieee80211_conf *conf = &hw->conf;
853 struct ieee80211_channel *channel = ch_switch->channel;
854 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
855 /*
856 * MULTI-FIXME
857 * When we add support for multiple interfaces, we need to
858 * revisit this. The channel switch command in the device
859 * only affects the BSS context, but what does that really
860 * mean? And what if we get a CSA on the second interface?
861 * This needs a lot of work.
862 */
863 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
864 u16 ch;
865
866 IWL_DEBUG_MAC80211(priv, "enter\n");
867
868 mutex_lock(&priv->mutex);
869
870 if (iwl_is_rfkill(priv))
871 goto out;
872
873 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
874 test_bit(STATUS_SCANNING, &priv->status) ||
875 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
876 goto out;
877
878 if (!iwl_is_associated_ctx(ctx))
879 goto out;
880
881 if (!priv->lib->set_channel_switch)
882 goto out;
883
884 ch = channel->hw_value;
885 if (le16_to_cpu(ctx->active.channel) == ch)
886 goto out;
887
888 priv->current_ht_config.smps = conf->smps_mode;
889
890 /* Configure HT40 channels */
891 ctx->ht.enabled = conf_is_ht(conf);
892 if (ctx->ht.enabled)
893 iwlagn_config_ht40(conf, ctx);
894 else
895 ctx->ht.is_40mhz = false;
896
897 if ((le16_to_cpu(ctx->staging.channel) != ch))
898 ctx->staging.flags = 0;
899
900 iwl_set_rxon_channel(priv, channel, ctx);
901 iwl_set_rxon_ht(priv, ht_conf);
902 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
903
904 /*
905 * at this point, staging_rxon has the
906 * configuration for channel switch
907 */
908 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
909 priv->switch_channel = cpu_to_le16(ch);
910 if (priv->lib->set_channel_switch(priv, ch_switch)) {
911 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
912 priv->switch_channel = 0;
913 ieee80211_chswitch_done(ctx->vif, false);
914 }
915
916 out:
917 mutex_unlock(&priv->mutex);
918 IWL_DEBUG_MAC80211(priv, "leave\n");
919 }
920
921 void iwl_chswitch_done(struct iwl_priv *priv, bool is_success)
922 {
923 /*
924 * MULTI-FIXME
925 * See iwlagn_mac_channel_switch.
926 */
927 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
928
929 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
930 return;
931
932 if (test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
933 ieee80211_chswitch_done(ctx->vif, is_success);
934 }
935
936 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
937 unsigned int changed_flags,
938 unsigned int *total_flags,
939 u64 multicast)
940 {
941 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
942 __le32 filter_or = 0, filter_nand = 0;
943 struct iwl_rxon_context *ctx;
944
945 #define CHK(test, flag) do { \
946 if (*total_flags & (test)) \
947 filter_or |= (flag); \
948 else \
949 filter_nand |= (flag); \
950 } while (0)
951
952 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
953 changed_flags, *total_flags);
954
955 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
956 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
957 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
958 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
959
960 #undef CHK
961
962 mutex_lock(&priv->mutex);
963
964 for_each_context(priv, ctx) {
965 ctx->staging.filter_flags &= ~filter_nand;
966 ctx->staging.filter_flags |= filter_or;
967
968 /*
969 * Not committing directly because hardware can perform a scan,
970 * but we'll eventually commit the filter flags change anyway.
971 */
972 }
973
974 mutex_unlock(&priv->mutex);
975
976 /*
977 * Receiving all multicast frames is always enabled by the
978 * default flags setup in iwl_connection_init_rx_config()
979 * since we currently do not support programming multicast
980 * filters into the device.
981 */
982 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
983 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
984 }
985
986 static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
987 {
988 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
989
990 mutex_lock(&priv->mutex);
991 IWL_DEBUG_MAC80211(priv, "enter\n");
992
993 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
994 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
995 goto done;
996 }
997 if (iwl_is_rfkill(priv)) {
998 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
999 goto done;
1000 }
1001
1002 /*
1003 * mac80211 will not push any more frames for transmit
1004 * until the flush is completed
1005 */
1006 if (drop) {
1007 IWL_DEBUG_MAC80211(priv, "send flush command\n");
1008 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
1009 IWL_ERR(priv, "flush request fail\n");
1010 goto done;
1011 }
1012 }
1013 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
1014 iwl_trans_wait_tx_queue_empty(priv->trans);
1015 done:
1016 mutex_unlock(&priv->mutex);
1017 IWL_DEBUG_MAC80211(priv, "leave\n");
1018 }
1019
1020 static int iwlagn_mac_remain_on_channel(struct ieee80211_hw *hw,
1021 struct ieee80211_channel *channel,
1022 enum nl80211_channel_type channel_type,
1023 int duration)
1024 {
1025 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1026 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1027 int err = 0;
1028
1029 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
1030 return -EOPNOTSUPP;
1031
1032 if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
1033 return -EOPNOTSUPP;
1034
1035 IWL_DEBUG_MAC80211(priv, "enter\n");
1036 mutex_lock(&priv->mutex);
1037
1038 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
1039 err = -EBUSY;
1040 goto out;
1041 }
1042
1043 priv->hw_roc_channel = channel;
1044 priv->hw_roc_chantype = channel_type;
1045 /* convert from ms to TU */
1046 priv->hw_roc_duration = DIV_ROUND_UP(1000 * duration, 1024);
1047 priv->hw_roc_start_notified = false;
1048 cancel_delayed_work(&priv->hw_roc_disable_work);
1049
1050 if (!ctx->is_active) {
1051 static const struct iwl_qos_info default_qos_data = {
1052 .def_qos_parm = {
1053 .ac[0] = {
1054 .cw_min = cpu_to_le16(3),
1055 .cw_max = cpu_to_le16(7),
1056 .aifsn = 2,
1057 .edca_txop = cpu_to_le16(1504),
1058 },
1059 .ac[1] = {
1060 .cw_min = cpu_to_le16(7),
1061 .cw_max = cpu_to_le16(15),
1062 .aifsn = 2,
1063 .edca_txop = cpu_to_le16(3008),
1064 },
1065 .ac[2] = {
1066 .cw_min = cpu_to_le16(15),
1067 .cw_max = cpu_to_le16(1023),
1068 .aifsn = 3,
1069 },
1070 .ac[3] = {
1071 .cw_min = cpu_to_le16(15),
1072 .cw_max = cpu_to_le16(1023),
1073 .aifsn = 7,
1074 },
1075 },
1076 };
1077
1078 ctx->is_active = true;
1079 ctx->qos_data = default_qos_data;
1080 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1081 memcpy(ctx->staging.node_addr,
1082 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
1083 ETH_ALEN);
1084 memcpy(ctx->staging.bssid_addr,
1085 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
1086 ETH_ALEN);
1087 err = iwlagn_commit_rxon(priv, ctx);
1088 if (err)
1089 goto out;
1090 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
1091 RXON_FILTER_PROMISC_MSK |
1092 RXON_FILTER_CTL2HOST_MSK;
1093
1094 err = iwlagn_commit_rxon(priv, ctx);
1095 if (err) {
1096 iwlagn_disable_roc(priv);
1097 goto out;
1098 }
1099 priv->hw_roc_setup = true;
1100 }
1101
1102 err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
1103 if (err)
1104 iwlagn_disable_roc(priv);
1105
1106 out:
1107 mutex_unlock(&priv->mutex);
1108 IWL_DEBUG_MAC80211(priv, "leave\n");
1109
1110 return err;
1111 }
1112
1113 static int iwlagn_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
1114 {
1115 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1116
1117 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
1118 return -EOPNOTSUPP;
1119
1120 IWL_DEBUG_MAC80211(priv, "enter\n");
1121 mutex_lock(&priv->mutex);
1122 iwl_scan_cancel_timeout(priv, priv->hw_roc_duration);
1123 iwlagn_disable_roc(priv);
1124 mutex_unlock(&priv->mutex);
1125 IWL_DEBUG_MAC80211(priv, "leave\n");
1126
1127 return 0;
1128 }
1129
1130 static void iwlagn_mac_rssi_callback(struct ieee80211_hw *hw,
1131 enum ieee80211_rssi_event rssi_event)
1132 {
1133 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1134
1135 IWL_DEBUG_MAC80211(priv, "enter\n");
1136 mutex_lock(&priv->mutex);
1137
1138 if (priv->cfg->bt_params &&
1139 priv->cfg->bt_params->advanced_bt_coexist) {
1140 if (rssi_event == RSSI_EVENT_LOW)
1141 priv->bt_enable_pspoll = true;
1142 else if (rssi_event == RSSI_EVENT_HIGH)
1143 priv->bt_enable_pspoll = false;
1144
1145 iwlagn_send_advance_bt_config(priv);
1146 } else {
1147 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
1148 "ignoring RSSI callback\n");
1149 }
1150
1151 mutex_unlock(&priv->mutex);
1152 IWL_DEBUG_MAC80211(priv, "leave\n");
1153 }
1154
1155 static int iwlagn_mac_set_tim(struct ieee80211_hw *hw,
1156 struct ieee80211_sta *sta, bool set)
1157 {
1158 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1159
1160 queue_work(priv->workqueue, &priv->beacon_update);
1161
1162 return 0;
1163 }
1164
1165 static int iwlagn_mac_conf_tx(struct ieee80211_hw *hw,
1166 struct ieee80211_vif *vif, u16 queue,
1167 const struct ieee80211_tx_queue_params *params)
1168 {
1169 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1170 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1171 struct iwl_rxon_context *ctx = vif_priv->ctx;
1172 int q;
1173
1174 if (WARN_ON(!ctx))
1175 return -EINVAL;
1176
1177 IWL_DEBUG_MAC80211(priv, "enter\n");
1178
1179 if (!iwl_is_ready_rf(priv)) {
1180 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
1181 return -EIO;
1182 }
1183
1184 if (queue >= AC_NUM) {
1185 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
1186 return 0;
1187 }
1188
1189 q = AC_NUM - 1 - queue;
1190
1191 mutex_lock(&priv->mutex);
1192
1193 ctx->qos_data.def_qos_parm.ac[q].cw_min =
1194 cpu_to_le16(params->cw_min);
1195 ctx->qos_data.def_qos_parm.ac[q].cw_max =
1196 cpu_to_le16(params->cw_max);
1197 ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
1198 ctx->qos_data.def_qos_parm.ac[q].edca_txop =
1199 cpu_to_le16((params->txop * 32));
1200
1201 ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0;
1202
1203 mutex_unlock(&priv->mutex);
1204
1205 IWL_DEBUG_MAC80211(priv, "leave\n");
1206 return 0;
1207 }
1208
1209 static int iwlagn_mac_tx_last_beacon(struct ieee80211_hw *hw)
1210 {
1211 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1212
1213 return priv->ibss_manager == IWL_IBSS_MANAGER;
1214 }
1215
1216 static int iwl_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
1217 {
1218 iwl_connection_init_rx_config(priv, ctx);
1219
1220 iwlagn_set_rxon_chain(priv, ctx);
1221
1222 return iwlagn_commit_rxon(priv, ctx);
1223 }
1224
1225 static int iwl_setup_interface(struct iwl_priv *priv,
1226 struct iwl_rxon_context *ctx)
1227 {
1228 struct ieee80211_vif *vif = ctx->vif;
1229 int err, ac;
1230
1231 lockdep_assert_held(&priv->mutex);
1232
1233 /*
1234 * This variable will be correct only when there's just
1235 * a single context, but all code using it is for hardware
1236 * that supports only one context.
1237 */
1238 priv->iw_mode = vif->type;
1239
1240 ctx->is_active = true;
1241
1242 err = iwl_set_mode(priv, ctx);
1243 if (err) {
1244 if (!ctx->always_active)
1245 ctx->is_active = false;
1246 return err;
1247 }
1248
1249 if (priv->cfg->bt_params && priv->cfg->bt_params->advanced_bt_coexist &&
1250 vif->type == NL80211_IFTYPE_ADHOC) {
1251 /*
1252 * pretend to have high BT traffic as long as we
1253 * are operating in IBSS mode, as this will cause
1254 * the rate scaling etc. to behave as intended.
1255 */
1256 priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
1257 }
1258
1259 /* set up queue mappings */
1260 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
1261 vif->hw_queue[ac] = ctx->ac_to_queue[ac];
1262
1263 if (vif->type == NL80211_IFTYPE_AP)
1264 vif->cab_queue = ctx->mcast_queue;
1265 else
1266 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
1267
1268 return 0;
1269 }
1270
1271 static int iwlagn_mac_add_interface(struct ieee80211_hw *hw,
1272 struct ieee80211_vif *vif)
1273 {
1274 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1275 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1276 struct iwl_rxon_context *tmp, *ctx = NULL;
1277 int err;
1278 enum nl80211_iftype viftype = ieee80211_vif_type_p2p(vif);
1279 bool reset = false;
1280
1281 IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n",
1282 viftype, vif->addr);
1283
1284 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1285
1286 mutex_lock(&priv->mutex);
1287
1288 iwlagn_disable_roc(priv);
1289
1290 if (!iwl_is_ready_rf(priv)) {
1291 IWL_WARN(priv, "Try to add interface when device not ready\n");
1292 err = -EINVAL;
1293 goto out;
1294 }
1295
1296 for_each_context(priv, tmp) {
1297 u32 possible_modes =
1298 tmp->interface_modes | tmp->exclusive_interface_modes;
1299
1300 if (tmp->vif) {
1301 /* On reset we need to add the same interface again */
1302 if (tmp->vif == vif) {
1303 reset = true;
1304 ctx = tmp;
1305 break;
1306 }
1307
1308 /* check if this busy context is exclusive */
1309 if (tmp->exclusive_interface_modes &
1310 BIT(tmp->vif->type)) {
1311 err = -EINVAL;
1312 goto out;
1313 }
1314 continue;
1315 }
1316
1317 if (!(possible_modes & BIT(viftype)))
1318 continue;
1319
1320 /* have maybe usable context w/o interface */
1321 ctx = tmp;
1322 break;
1323 }
1324
1325 if (!ctx) {
1326 err = -EOPNOTSUPP;
1327 goto out;
1328 }
1329
1330 vif_priv->ctx = ctx;
1331 ctx->vif = vif;
1332
1333 err = iwl_setup_interface(priv, ctx);
1334 if (!err || reset)
1335 goto out;
1336
1337 ctx->vif = NULL;
1338 priv->iw_mode = NL80211_IFTYPE_STATION;
1339 out:
1340 mutex_unlock(&priv->mutex);
1341
1342 IWL_DEBUG_MAC80211(priv, "leave\n");
1343 return err;
1344 }
1345
1346 static void iwl_teardown_interface(struct iwl_priv *priv,
1347 struct ieee80211_vif *vif,
1348 bool mode_change)
1349 {
1350 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1351
1352 lockdep_assert_held(&priv->mutex);
1353
1354 if (priv->scan_vif == vif) {
1355 iwl_scan_cancel_timeout(priv, 200);
1356 iwl_force_scan_end(priv);
1357 }
1358
1359 if (!mode_change) {
1360 iwl_set_mode(priv, ctx);
1361 if (!ctx->always_active)
1362 ctx->is_active = false;
1363 }
1364
1365 /*
1366 * When removing the IBSS interface, overwrite the
1367 * BT traffic load with the stored one from the last
1368 * notification, if any. If this is a device that
1369 * doesn't implement this, this has no effect since
1370 * both values are the same and zero.
1371 */
1372 if (vif->type == NL80211_IFTYPE_ADHOC)
1373 priv->bt_traffic_load = priv->last_bt_traffic_load;
1374 }
1375
1376 static void iwlagn_mac_remove_interface(struct ieee80211_hw *hw,
1377 struct ieee80211_vif *vif)
1378 {
1379 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1380 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1381
1382 IWL_DEBUG_MAC80211(priv, "enter\n");
1383
1384 mutex_lock(&priv->mutex);
1385
1386 if (WARN_ON(ctx->vif != vif)) {
1387 struct iwl_rxon_context *tmp;
1388 IWL_ERR(priv, "ctx->vif = %p, vif = %p\n", ctx->vif, vif);
1389 for_each_context(priv, tmp)
1390 IWL_ERR(priv, "\tID = %d:\tctx = %p\tctx->vif = %p\n",
1391 tmp->ctxid, tmp, tmp->vif);
1392 }
1393 ctx->vif = NULL;
1394
1395 iwl_teardown_interface(priv, vif, false);
1396
1397 mutex_unlock(&priv->mutex);
1398
1399 IWL_DEBUG_MAC80211(priv, "leave\n");
1400
1401 }
1402
1403 static int iwlagn_mac_change_interface(struct ieee80211_hw *hw,
1404 struct ieee80211_vif *vif,
1405 enum nl80211_iftype newtype, bool newp2p)
1406 {
1407 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1408 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1409 struct iwl_rxon_context *bss_ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1410 struct iwl_rxon_context *tmp;
1411 enum nl80211_iftype newviftype = newtype;
1412 u32 interface_modes;
1413 int err;
1414
1415 IWL_DEBUG_MAC80211(priv, "enter\n");
1416
1417 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1418
1419 mutex_lock(&priv->mutex);
1420
1421 if (!ctx->vif || !iwl_is_ready_rf(priv)) {
1422 /*
1423 * Huh? But wait ... this can maybe happen when
1424 * we're in the middle of a firmware restart!
1425 */
1426 err = -EBUSY;
1427 goto out;
1428 }
1429
1430 interface_modes = ctx->interface_modes | ctx->exclusive_interface_modes;
1431
1432 if (!(interface_modes & BIT(newtype))) {
1433 err = -EBUSY;
1434 goto out;
1435 }
1436
1437 /*
1438 * Refuse a change that should be done by moving from the PAN
1439 * context to the BSS context instead, if the BSS context is
1440 * available and can support the new interface type.
1441 */
1442 if (ctx->ctxid == IWL_RXON_CTX_PAN && !bss_ctx->vif &&
1443 (bss_ctx->interface_modes & BIT(newtype) ||
1444 bss_ctx->exclusive_interface_modes & BIT(newtype))) {
1445 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
1446 err = -EBUSY;
1447 goto out;
1448 }
1449
1450 if (ctx->exclusive_interface_modes & BIT(newtype)) {
1451 for_each_context(priv, tmp) {
1452 if (ctx == tmp)
1453 continue;
1454
1455 if (!tmp->vif)
1456 continue;
1457
1458 /*
1459 * The current mode switch would be exclusive, but
1460 * another context is active ... refuse the switch.
1461 */
1462 err = -EBUSY;
1463 goto out;
1464 }
1465 }
1466
1467 /* success */
1468 iwl_teardown_interface(priv, vif, true);
1469 vif->type = newviftype;
1470 vif->p2p = newp2p;
1471 err = iwl_setup_interface(priv, ctx);
1472 WARN_ON(err);
1473 /*
1474 * We've switched internally, but submitting to the
1475 * device may have failed for some reason. Mask this
1476 * error, because otherwise mac80211 will not switch
1477 * (and set the interface type back) and we'll be
1478 * out of sync with it.
1479 */
1480 err = 0;
1481
1482 out:
1483 mutex_unlock(&priv->mutex);
1484 IWL_DEBUG_MAC80211(priv, "leave\n");
1485
1486 return err;
1487 }
1488
1489 static int iwlagn_mac_hw_scan(struct ieee80211_hw *hw,
1490 struct ieee80211_vif *vif,
1491 struct cfg80211_scan_request *req)
1492 {
1493 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1494 int ret;
1495
1496 IWL_DEBUG_MAC80211(priv, "enter\n");
1497
1498 if (req->n_channels == 0)
1499 return -EINVAL;
1500
1501 mutex_lock(&priv->mutex);
1502
1503 /*
1504 * If an internal scan is in progress, just set
1505 * up the scan_request as per above.
1506 */
1507 if (priv->scan_type != IWL_SCAN_NORMAL) {
1508 IWL_DEBUG_SCAN(priv,
1509 "SCAN request during internal scan - defer\n");
1510 priv->scan_request = req;
1511 priv->scan_vif = vif;
1512 ret = 0;
1513 } else {
1514 priv->scan_request = req;
1515 priv->scan_vif = vif;
1516 /*
1517 * mac80211 will only ask for one band at a time
1518 * so using channels[0] here is ok
1519 */
1520 ret = iwl_scan_initiate(priv, vif, IWL_SCAN_NORMAL,
1521 req->channels[0]->band);
1522 if (ret) {
1523 priv->scan_request = NULL;
1524 priv->scan_vif = NULL;
1525 }
1526 }
1527
1528 IWL_DEBUG_MAC80211(priv, "leave\n");
1529
1530 mutex_unlock(&priv->mutex);
1531
1532 return ret;
1533 }
1534
1535 static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1536 {
1537 struct iwl_addsta_cmd cmd = {
1538 .mode = STA_CONTROL_MODIFY_MSK,
1539 .station_flags_msk = STA_FLG_PWR_SAVE_MSK,
1540 .sta.sta_id = sta_id,
1541 };
1542
1543 iwl_send_add_sta(priv, &cmd, CMD_ASYNC);
1544 }
1545
1546 static void iwlagn_mac_sta_notify(struct ieee80211_hw *hw,
1547 struct ieee80211_vif *vif,
1548 enum sta_notify_cmd cmd,
1549 struct ieee80211_sta *sta)
1550 {
1551 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1552 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
1553 int sta_id;
1554
1555 IWL_DEBUG_MAC80211(priv, "enter\n");
1556
1557 switch (cmd) {
1558 case STA_NOTIFY_SLEEP:
1559 WARN_ON(!sta_priv->client);
1560 sta_priv->asleep = true;
1561 if (atomic_read(&sta_priv->pending_frames) > 0)
1562 ieee80211_sta_block_awake(hw, sta, true);
1563 break;
1564 case STA_NOTIFY_AWAKE:
1565 WARN_ON(!sta_priv->client);
1566 if (!sta_priv->asleep)
1567 break;
1568 sta_priv->asleep = false;
1569 sta_id = iwl_sta_id(sta);
1570 if (sta_id != IWL_INVALID_STATION)
1571 iwl_sta_modify_ps_wake(priv, sta_id);
1572 break;
1573 default:
1574 break;
1575 }
1576 IWL_DEBUG_MAC80211(priv, "leave\n");
1577 }
1578
1579 struct ieee80211_ops iwlagn_hw_ops = {
1580 .tx = iwlagn_mac_tx,
1581 .start = iwlagn_mac_start,
1582 .stop = iwlagn_mac_stop,
1583 #ifdef CONFIG_PM_SLEEP
1584 .suspend = iwlagn_mac_suspend,
1585 .resume = iwlagn_mac_resume,
1586 .set_wakeup = iwlagn_mac_set_wakeup,
1587 #endif
1588 .add_interface = iwlagn_mac_add_interface,
1589 .remove_interface = iwlagn_mac_remove_interface,
1590 .change_interface = iwlagn_mac_change_interface,
1591 .config = iwlagn_mac_config,
1592 .configure_filter = iwlagn_configure_filter,
1593 .set_key = iwlagn_mac_set_key,
1594 .update_tkip_key = iwlagn_mac_update_tkip_key,
1595 .set_rekey_data = iwlagn_mac_set_rekey_data,
1596 .conf_tx = iwlagn_mac_conf_tx,
1597 .bss_info_changed = iwlagn_bss_info_changed,
1598 .ampdu_action = iwlagn_mac_ampdu_action,
1599 .hw_scan = iwlagn_mac_hw_scan,
1600 .sta_notify = iwlagn_mac_sta_notify,
1601 .sta_state = iwlagn_mac_sta_state,
1602 .channel_switch = iwlagn_mac_channel_switch,
1603 .flush = iwlagn_mac_flush,
1604 .tx_last_beacon = iwlagn_mac_tx_last_beacon,
1605 .remain_on_channel = iwlagn_mac_remain_on_channel,
1606 .cancel_remain_on_channel = iwlagn_mac_cancel_remain_on_channel,
1607 .rssi_callback = iwlagn_mac_rssi_callback,
1608 CFG80211_TESTMODE_CMD(iwlagn_mac_testmode_cmd)
1609 CFG80211_TESTMODE_DUMP(iwlagn_mac_testmode_dump)
1610 .set_tim = iwlagn_mac_set_tim,
1611 };
1612
1613 /* This function both allocates and initializes hw and priv. */
1614 struct ieee80211_hw *iwl_alloc_all(void)
1615 {
1616 struct iwl_priv *priv;
1617 struct iwl_op_mode *op_mode;
1618 /* mac80211 allocates memory for this device instance, including
1619 * space for this driver's private structure */
1620 struct ieee80211_hw *hw;
1621
1622 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv) +
1623 sizeof(struct iwl_op_mode), &iwlagn_hw_ops);
1624 if (!hw)
1625 goto out;
1626
1627 op_mode = hw->priv;
1628 priv = IWL_OP_MODE_GET_DVM(op_mode);
1629 priv->hw = hw;
1630
1631 out:
1632 return hw;
1633 }
kernel source for telekom puls (alcatel/mediatek)