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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
58
59
60
61static 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
72static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
73 {
74 .max = 2,
75 .types = BIT(NL80211_IFTYPE_STATION),
76 },
77};
78
79static 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
91static 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
102static const struct ieee80211_iface_combination
103iwlagn_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
117static const struct ieee80211_iface_combination
118iwlagn_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
134
135
136int 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
146 hw->flags = IEEE80211_HW_SIGNAL_DBM |
147 IEEE80211_HW_AMPDU_AGGREGATION |
148 IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC |
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
156 hw->offchannel_tx_hw_queue = IWL_AUX_QUEUE;
157 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FMT;
158
159
160
161
162
163
164
165
166 if (priv->nvm_data->sku_cap_11n_enable)
167 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
168 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
169
170
171
172
173
174
175 if (priv->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
176 !iwlwifi_mod_params.sw_crypto)
177 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
178
179 hw->sta_data_size = sizeof(struct iwl_station_priv);
180 hw->vif_data_size = sizeof(struct iwl_vif_priv);
181
182 for_each_context(priv, ctx) {
183 hw->wiphy->interface_modes |= ctx->interface_modes;
184 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
185 }
186
187 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
188
189 if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
190 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
191 hw->wiphy->n_iface_combinations =
192 ARRAY_SIZE(iwlagn_iface_combinations_p2p);
193 } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
194 hw->wiphy->iface_combinations =
195 iwlagn_iface_combinations_dualmode;
196 hw->wiphy->n_iface_combinations =
197 ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
198 }
199
200 hw->wiphy->max_remain_on_channel_duration = 500;
201
202 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
203 WIPHY_FLAG_DISABLE_BEACON_HINTS |
204 WIPHY_FLAG_IBSS_RSN;
205
206#ifdef CONFIG_PM_SLEEP
207 if (priv->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
208 priv->trans->ops->d3_suspend &&
209 priv->trans->ops->d3_resume &&
210 device_can_wakeup(priv->trans->dev)) {
211 priv->wowlan_support.flags = WIPHY_WOWLAN_MAGIC_PKT |
212 WIPHY_WOWLAN_DISCONNECT |
213 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
214 WIPHY_WOWLAN_RFKILL_RELEASE;
215 if (!iwlwifi_mod_params.sw_crypto)
216 priv->wowlan_support.flags |=
217 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
218 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
219
220 priv->wowlan_support.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
221 priv->wowlan_support.pattern_min_len =
222 IWLAGN_WOWLAN_MIN_PATTERN_LEN;
223 priv->wowlan_support.pattern_max_len =
224 IWLAGN_WOWLAN_MAX_PATTERN_LEN;
225 hw->wiphy->wowlan = &priv->wowlan_support;
226 }
227#endif
228
229 if (iwlwifi_mod_params.power_save)
230 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
231 else
232 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
233
234 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
235
236 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 34;
237
238
239
240
241
242 hw->queues = IWLAGN_FIRST_AMPDU_QUEUE;
243
244 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
245
246 if (priv->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
247 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
248 &priv->nvm_data->bands[IEEE80211_BAND_2GHZ];
249 if (priv->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
250 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
251 &priv->nvm_data->bands[IEEE80211_BAND_5GHZ];
252
253 hw->wiphy->hw_version = priv->trans->hw_id;
254
255 iwl_leds_init(priv);
256
257 ret = ieee80211_register_hw(priv->hw);
258 if (ret) {
259 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
260 iwl_leds_exit(priv);
261 return ret;
262 }
263 priv->mac80211_registered = 1;
264
265 return 0;
266}
267
268void iwlagn_mac_unregister(struct iwl_priv *priv)
269{
270 if (!priv->mac80211_registered)
271 return;
272 iwl_leds_exit(priv);
273 ieee80211_unregister_hw(priv->hw);
274 priv->mac80211_registered = 0;
275}
276
277static int __iwl_up(struct iwl_priv *priv)
278{
279 struct iwl_rxon_context *ctx;
280 int ret;
281
282 lockdep_assert_held(&priv->mutex);
283
284 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
285 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
286 return -EIO;
287 }
288
289 for_each_context(priv, ctx) {
290 ret = iwlagn_alloc_bcast_station(priv, ctx);
291 if (ret) {
292 iwl_dealloc_bcast_stations(priv);
293 return ret;
294 }
295 }
296
297 ret = iwl_run_init_ucode(priv);
298 if (ret) {
299 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
300 goto error;
301 }
302
303 ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_REGULAR);
304 if (ret) {
305 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
306 goto error;
307 }
308
309 ret = iwl_alive_start(priv);
310 if (ret)
311 goto error;
312 return 0;
313
314 error:
315 set_bit(STATUS_EXIT_PENDING, &priv->status);
316 iwl_down(priv);
317 clear_bit(STATUS_EXIT_PENDING, &priv->status);
318
319 IWL_ERR(priv, "Unable to initialize device.\n");
320 return ret;
321}
322
323static int iwlagn_mac_start(struct ieee80211_hw *hw)
324{
325 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
326 int ret;
327
328 IWL_DEBUG_MAC80211(priv, "enter\n");
329
330
331 mutex_lock(&priv->mutex);
332 ret = __iwl_up(priv);
333 mutex_unlock(&priv->mutex);
334 if (ret)
335 return ret;
336
337 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
338
339
340 if (WARN_ON(!test_bit(STATUS_READY, &priv->status)))
341 ret = -EIO;
342
343 iwlagn_led_enable(priv);
344
345 priv->is_open = 1;
346 IWL_DEBUG_MAC80211(priv, "leave\n");
347 return 0;
348}
349
350static void iwlagn_mac_stop(struct ieee80211_hw *hw)
351{
352 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
353
354 IWL_DEBUG_MAC80211(priv, "enter\n");
355
356 if (!priv->is_open)
357 return;
358
359 priv->is_open = 0;
360
361 mutex_lock(&priv->mutex);
362 iwl_down(priv);
363 mutex_unlock(&priv->mutex);
364
365 iwl_cancel_deferred_work(priv);
366
367 flush_workqueue(priv->workqueue);
368
369
370
371
372
373 iwl_trans_stop_hw(priv->trans, false);
374
375 IWL_DEBUG_MAC80211(priv, "leave\n");
376}
377
378static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
379 struct ieee80211_vif *vif,
380 struct cfg80211_gtk_rekey_data *data)
381{
382 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
383
384 if (iwlwifi_mod_params.sw_crypto)
385 return;
386
387 IWL_DEBUG_MAC80211(priv, "enter\n");
388 mutex_lock(&priv->mutex);
389
390 if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
391 goto out;
392
393 memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
394 memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
395 priv->replay_ctr =
396 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
397 priv->have_rekey_data = true;
398
399 out:
400 mutex_unlock(&priv->mutex);
401 IWL_DEBUG_MAC80211(priv, "leave\n");
402}
403
404#ifdef CONFIG_PM_SLEEP
405
406static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
407 struct cfg80211_wowlan *wowlan)
408{
409 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
410 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
411 int ret;
412
413 if (WARN_ON(!wowlan))
414 return -EINVAL;
415
416 IWL_DEBUG_MAC80211(priv, "enter\n");
417 mutex_lock(&priv->mutex);
418
419
420 if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
421 !iwl_is_associated_ctx(ctx)) {
422 ret = 1;
423 goto out;
424 }
425
426 ret = iwlagn_suspend(priv, wowlan);
427 if (ret)
428 goto error;
429
430
431 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_SET,
432 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
433
434 iwl_trans_d3_suspend(priv->trans, false);
435
436 goto out;
437
438 error:
439 priv->wowlan = false;
440 iwlagn_prepare_restart(priv);
441 ieee80211_restart_hw(priv->hw);
442 out:
443 mutex_unlock(&priv->mutex);
444 IWL_DEBUG_MAC80211(priv, "leave\n");
445
446 return ret;
447}
448
449struct iwl_resume_data {
450 struct iwl_priv *priv;
451 struct iwlagn_wowlan_status *cmd;
452 bool valid;
453};
454
455static bool iwl_resume_status_fn(struct iwl_notif_wait_data *notif_wait,
456 struct iwl_rx_packet *pkt, void *data)
457{
458 struct iwl_resume_data *resume_data = data;
459 struct iwl_priv *priv = resume_data->priv;
460 u32 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
461
462 if (len - 4 != sizeof(*resume_data->cmd)) {
463 IWL_ERR(priv, "rx wrong size data\n");
464 return true;
465 }
466 memcpy(resume_data->cmd, pkt->data, sizeof(*resume_data->cmd));
467 resume_data->valid = true;
468
469 return true;
470}
471
472static int iwlagn_mac_resume(struct ieee80211_hw *hw)
473{
474 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
475 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
476 struct ieee80211_vif *vif;
477 u32 base;
478 int ret;
479 enum iwl_d3_status d3_status;
480 struct error_table_start {
481
482 u32 valid;
483 u32 error_id;
484 } err_info;
485 struct iwl_notification_wait status_wait;
486 static const u8 status_cmd[] = {
487 REPLY_WOWLAN_GET_STATUS,
488 };
489 struct iwlagn_wowlan_status status_data = {};
490 struct iwl_resume_data resume_data = {
491 .priv = priv,
492 .cmd = &status_data,
493 .valid = false,
494 };
495 struct cfg80211_wowlan_wakeup wakeup = {
496 .pattern_idx = -1,
497 };
498#ifdef CONFIG_IWLWIFI_DEBUGFS
499 const struct fw_img *img;
500#endif
501
502 IWL_DEBUG_MAC80211(priv, "enter\n");
503 mutex_lock(&priv->mutex);
504
505
506 vif = ctx->vif;
507
508 ret = iwl_trans_d3_resume(priv->trans, &d3_status, false);
509 if (ret)
510 goto out_unlock;
511
512 if (d3_status != IWL_D3_STATUS_ALIVE) {
513 IWL_INFO(priv, "Device was reset during suspend\n");
514 goto out_unlock;
515 }
516
517
518 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
519 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
520
521 base = priv->device_pointers.error_event_table;
522 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
523 IWL_WARN(priv, "Invalid error table during resume!\n");
524 goto out_unlock;
525 }
526
527 iwl_trans_read_mem_bytes(priv->trans, base,
528 &err_info, sizeof(err_info));
529
530 if (err_info.valid) {
531 IWL_INFO(priv, "error table is valid (%d, 0x%x)\n",
532 err_info.valid, err_info.error_id);
533 if (err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
534 wakeup.rfkill_release = true;
535 ieee80211_report_wowlan_wakeup(vif, &wakeup,
536 GFP_KERNEL);
537 }
538 goto out_unlock;
539 }
540
541#ifdef CONFIG_IWLWIFI_DEBUGFS
542 img = &priv->fw->img[IWL_UCODE_WOWLAN];
543 if (!priv->wowlan_sram)
544 priv->wowlan_sram =
545 kzalloc(img->sec[IWL_UCODE_SECTION_DATA].len,
546 GFP_KERNEL);
547
548 if (priv->wowlan_sram)
549 iwl_trans_read_mem(priv->trans, 0x800000,
550 priv->wowlan_sram,
551 img->sec[IWL_UCODE_SECTION_DATA].len / 4);
552#endif
553
554
555
556
557
558
559
560
561
562 iwl_init_notification_wait(&priv->notif_wait, &status_wait, status_cmd,
563 ARRAY_SIZE(status_cmd), iwl_resume_status_fn,
564 &resume_data);
565
566 iwl_dvm_send_cmd_pdu(priv, REPLY_WOWLAN_GET_STATUS, CMD_ASYNC, 0, NULL);
567 iwl_dvm_send_cmd_pdu(priv, REPLY_ECHO, CMD_ASYNC, 0, NULL);
568
569
570 ret = iwl_wait_notification(&priv->notif_wait, &status_wait, HZ/5);
571 if (ret)
572 goto out_unlock;
573
574 if (resume_data.valid && priv->contexts[IWL_RXON_CTX_BSS].vif) {
575 u32 reasons = le32_to_cpu(status_data.wakeup_reason);
576 struct cfg80211_wowlan_wakeup *wakeup_report;
577
578 IWL_INFO(priv, "WoWLAN wakeup reason(s): 0x%.8x\n", reasons);
579
580 if (reasons) {
581 if (reasons & IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET)
582 wakeup.magic_pkt = true;
583 if (reasons & IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH)
584 wakeup.pattern_idx = status_data.pattern_number;
585 if (reasons & (IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
586 IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE))
587 wakeup.disconnect = true;
588 if (reasons & IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL)
589 wakeup.gtk_rekey_failure = true;
590 if (reasons & IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ)
591 wakeup.eap_identity_req = true;
592 if (reasons & IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE)
593 wakeup.four_way_handshake = true;
594 wakeup_report = &wakeup;
595 } else {
596 wakeup_report = NULL;
597 }
598
599 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
600 }
601
602 priv->wowlan = false;
603
604 iwlagn_prepare_restart(priv);
605
606 memset((void *)&ctx->active, 0, sizeof(ctx->active));
607 iwl_connection_init_rx_config(priv, ctx);
608 iwlagn_set_rxon_chain(priv, ctx);
609
610 out_unlock:
611 mutex_unlock(&priv->mutex);
612 IWL_DEBUG_MAC80211(priv, "leave\n");
613
614 ieee80211_resume_disconnect(vif);
615
616 return 1;
617}
618
619static void iwlagn_mac_set_wakeup(struct ieee80211_hw *hw, bool enabled)
620{
621 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
622
623 device_set_wakeup_enable(priv->trans->dev, enabled);
624}
625#endif
626
627static void iwlagn_mac_tx(struct ieee80211_hw *hw,
628 struct ieee80211_tx_control *control,
629 struct sk_buff *skb)
630{
631 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
632
633 if (iwlagn_tx_skb(priv, control->sta, skb))
634 ieee80211_free_txskb(hw, skb);
635}
636
637static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
638 struct ieee80211_vif *vif,
639 struct ieee80211_key_conf *keyconf,
640 struct ieee80211_sta *sta,
641 u32 iv32, u16 *phase1key)
642{
643 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
644
645 iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
646}
647
648static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
649 struct ieee80211_vif *vif,
650 struct ieee80211_sta *sta,
651 struct ieee80211_key_conf *key)
652{
653 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
654 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
655 struct iwl_rxon_context *ctx = vif_priv->ctx;
656 int ret;
657 bool is_default_wep_key = false;
658
659 IWL_DEBUG_MAC80211(priv, "enter\n");
660
661 if (iwlwifi_mod_params.sw_crypto) {
662 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
663 return -EOPNOTSUPP;
664 }
665
666 switch (key->cipher) {
667 case WLAN_CIPHER_SUITE_TKIP:
668 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
669
670 case WLAN_CIPHER_SUITE_CCMP:
671 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
672 break;
673 default:
674 break;
675 }
676
677
678
679
680
681
682
683
684 if (vif->type == NL80211_IFTYPE_ADHOC &&
685 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
686 key->hw_key_idx = WEP_INVALID_OFFSET;
687 return 0;
688 }
689
690
691 if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
692 return 0;
693
694 mutex_lock(&priv->mutex);
695 iwl_scan_cancel_timeout(priv, 100);
696
697 BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
698
699
700
701
702
703
704
705 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
706 key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
707 if (cmd == SET_KEY)
708 is_default_wep_key = !ctx->key_mapping_keys;
709 else
710 is_default_wep_key =
711 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
712 }
713
714
715 switch (cmd) {
716 case SET_KEY:
717 if (is_default_wep_key) {
718 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
719 break;
720 }
721 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
722 if (ret) {
723
724
725
726
727 ret = 0;
728 key->hw_key_idx = WEP_INVALID_OFFSET;
729 }
730
731 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
732 break;
733 case DISABLE_KEY:
734 if (is_default_wep_key)
735 ret = iwl_remove_default_wep_key(priv, ctx, key);
736 else
737 ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
738
739 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
740 break;
741 default:
742 ret = -EINVAL;
743 }
744
745 mutex_unlock(&priv->mutex);
746 IWL_DEBUG_MAC80211(priv, "leave\n");
747
748 return ret;
749}
750
751static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
752 struct ieee80211_vif *vif,
753 enum ieee80211_ampdu_mlme_action action,
754 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
755 u8 buf_size)
756{
757 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
758 int ret = -EINVAL;
759 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
760
761 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
762 sta->addr, tid);
763
764 if (!(priv->nvm_data->sku_cap_11n_enable))
765 return -EACCES;
766
767 IWL_DEBUG_MAC80211(priv, "enter\n");
768 mutex_lock(&priv->mutex);
769
770 switch (action) {
771 case IEEE80211_AMPDU_RX_START:
772 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
773 break;
774 IWL_DEBUG_HT(priv, "start Rx\n");
775 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
776 break;
777 case IEEE80211_AMPDU_RX_STOP:
778 IWL_DEBUG_HT(priv, "stop Rx\n");
779 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
780 break;
781 case IEEE80211_AMPDU_TX_START:
782 if (!priv->trans->ops->txq_enable)
783 break;
784 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
785 break;
786 IWL_DEBUG_HT(priv, "start Tx\n");
787 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
788 break;
789 case IEEE80211_AMPDU_TX_STOP_FLUSH:
790 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
791 IWL_DEBUG_HT(priv, "Flush Tx\n");
792 ret = iwlagn_tx_agg_flush(priv, vif, sta, tid);
793 break;
794 case IEEE80211_AMPDU_TX_STOP_CONT:
795 IWL_DEBUG_HT(priv, "stop Tx\n");
796 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
797 if ((ret == 0) && (priv->agg_tids_count > 0)) {
798 priv->agg_tids_count--;
799 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
800 priv->agg_tids_count);
801 }
802 if (!priv->agg_tids_count &&
803 priv->hw_params.use_rts_for_aggregation) {
804
805
806
807 sta_priv->lq_sta.lq.general_params.flags &=
808 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
809 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
810 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
811 }
812 break;
813 case IEEE80211_AMPDU_TX_OPERATIONAL:
814 ret = iwlagn_tx_agg_oper(priv, vif, sta, tid, buf_size);
815 break;
816 }
817 mutex_unlock(&priv->mutex);
818 IWL_DEBUG_MAC80211(priv, "leave\n");
819 return ret;
820}
821
822static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
823 struct ieee80211_vif *vif,
824 struct ieee80211_sta *sta)
825{
826 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
827 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
828 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
829 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
830 int ret;
831 u8 sta_id;
832
833 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
834 sta->addr);
835 sta_priv->sta_id = IWL_INVALID_STATION;
836
837 atomic_set(&sta_priv->pending_frames, 0);
838 if (vif->type == NL80211_IFTYPE_AP)
839 sta_priv->client = true;
840
841 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
842 is_ap, sta, &sta_id);
843 if (ret) {
844 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
845 sta->addr, ret);
846
847 return ret;
848 }
849
850 sta_priv->sta_id = sta_id;
851
852 return 0;
853}
854
855static int iwlagn_mac_sta_remove(struct ieee80211_hw *hw,
856 struct ieee80211_vif *vif,
857 struct ieee80211_sta *sta)
858{
859 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
860 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
861 int ret;
862
863 IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n", sta->addr);
864
865 if (vif->type == NL80211_IFTYPE_STATION) {
866
867
868
869
870
871 ret = 0;
872 iwl_deactivate_station(priv, sta_priv->sta_id, sta->addr);
873 } else {
874 ret = iwl_remove_station(priv, sta_priv->sta_id, sta->addr);
875 if (ret)
876 IWL_DEBUG_QUIET_RFKILL(priv,
877 "Error removing station %pM\n", sta->addr);
878 }
879 return ret;
880}
881
882static int iwlagn_mac_sta_state(struct ieee80211_hw *hw,
883 struct ieee80211_vif *vif,
884 struct ieee80211_sta *sta,
885 enum ieee80211_sta_state old_state,
886 enum ieee80211_sta_state new_state)
887{
888 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
889 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
890 enum {
891 NONE, ADD, REMOVE, HT_RATE_INIT, ADD_RATE_INIT,
892 } op = NONE;
893 int ret;
894
895 IWL_DEBUG_MAC80211(priv, "station %pM state change %d->%d\n",
896 sta->addr, old_state, new_state);
897
898 mutex_lock(&priv->mutex);
899 if (vif->type == NL80211_IFTYPE_STATION) {
900 if (old_state == IEEE80211_STA_NOTEXIST &&
901 new_state == IEEE80211_STA_NONE)
902 op = ADD;
903 else if (old_state == IEEE80211_STA_NONE &&
904 new_state == IEEE80211_STA_NOTEXIST)
905 op = REMOVE;
906 else if (old_state == IEEE80211_STA_AUTH &&
907 new_state == IEEE80211_STA_ASSOC)
908 op = HT_RATE_INIT;
909 } else {
910 if (old_state == IEEE80211_STA_AUTH &&
911 new_state == IEEE80211_STA_ASSOC)
912 op = ADD_RATE_INIT;
913 else if (old_state == IEEE80211_STA_ASSOC &&
914 new_state == IEEE80211_STA_AUTH)
915 op = REMOVE;
916 }
917
918 switch (op) {
919 case ADD:
920 ret = iwlagn_mac_sta_add(hw, vif, sta);
921 if (ret)
922 break;
923
924
925
926
927
928
929 spin_lock_bh(&priv->sta_lock);
930 priv->stations[iwl_sta_id(sta)].used &=
931 ~IWL_STA_UCODE_INPROGRESS;
932 spin_unlock_bh(&priv->sta_lock);
933 break;
934 case REMOVE:
935 ret = iwlagn_mac_sta_remove(hw, vif, sta);
936 break;
937 case ADD_RATE_INIT:
938 ret = iwlagn_mac_sta_add(hw, vif, sta);
939 if (ret)
940 break;
941
942 IWL_DEBUG_INFO(priv,
943 "Initializing rate scaling for station %pM\n",
944 sta->addr);
945 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
946 ret = 0;
947 break;
948 case HT_RATE_INIT:
949
950 ret = iwl_sta_update_ht(priv, vif_priv->ctx, sta);
951 if (ret)
952 break;
953 IWL_DEBUG_INFO(priv,
954 "Initializing rate scaling for station %pM\n",
955 sta->addr);
956 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
957 ret = 0;
958 break;
959 default:
960 ret = 0;
961 break;
962 }
963
964
965
966
967
968 if (iwl_is_rfkill(priv))
969 ret = 0;
970
971 mutex_unlock(&priv->mutex);
972 IWL_DEBUG_MAC80211(priv, "leave\n");
973
974 return ret;
975}
976
977static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
978 struct ieee80211_channel_switch *ch_switch)
979{
980 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
981 struct ieee80211_conf *conf = &hw->conf;
982 struct ieee80211_channel *channel = ch_switch->chandef.chan;
983 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
984
985
986
987
988
989
990
991
992 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
993 u16 ch;
994
995 IWL_DEBUG_MAC80211(priv, "enter\n");
996
997 mutex_lock(&priv->mutex);
998
999 if (iwl_is_rfkill(priv))
1000 goto out;
1001
1002 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
1003 test_bit(STATUS_SCANNING, &priv->status) ||
1004 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
1005 goto out;
1006
1007 if (!iwl_is_associated_ctx(ctx))
1008 goto out;
1009
1010 if (!priv->lib->set_channel_switch)
1011 goto out;
1012
1013 ch = channel->hw_value;
1014 if (le16_to_cpu(ctx->active.channel) == ch)
1015 goto out;
1016
1017 priv->current_ht_config.smps = conf->smps_mode;
1018
1019
1020 switch (cfg80211_get_chandef_type(&ch_switch->chandef)) {
1021 case NL80211_CHAN_NO_HT:
1022 case NL80211_CHAN_HT20:
1023 ctx->ht.is_40mhz = false;
1024 ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
1025 break;
1026 case NL80211_CHAN_HT40MINUS:
1027 ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
1028 ctx->ht.is_40mhz = true;
1029 break;
1030 case NL80211_CHAN_HT40PLUS:
1031 ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
1032 ctx->ht.is_40mhz = true;
1033 break;
1034 }
1035
1036 if ((le16_to_cpu(ctx->staging.channel) != ch))
1037 ctx->staging.flags = 0;
1038
1039 iwl_set_rxon_channel(priv, channel, ctx);
1040 iwl_set_rxon_ht(priv, ht_conf);
1041 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
1042
1043
1044
1045
1046
1047 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
1048 priv->switch_channel = cpu_to_le16(ch);
1049 if (priv->lib->set_channel_switch(priv, ch_switch)) {
1050 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
1051 priv->switch_channel = 0;
1052 ieee80211_chswitch_done(ctx->vif, false);
1053 }
1054
1055out:
1056 mutex_unlock(&priv->mutex);
1057 IWL_DEBUG_MAC80211(priv, "leave\n");
1058}
1059
1060void iwl_chswitch_done(struct iwl_priv *priv, bool is_success)
1061{
1062
1063
1064
1065
1066 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1067
1068 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1069 return;
1070
1071 if (!test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
1072 return;
1073
1074 if (ctx->vif)
1075 ieee80211_chswitch_done(ctx->vif, is_success);
1076}
1077
1078static void iwlagn_configure_filter(struct ieee80211_hw *hw,
1079 unsigned int changed_flags,
1080 unsigned int *total_flags,
1081 u64 multicast)
1082{
1083 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1084 __le32 filter_or = 0, filter_nand = 0;
1085 struct iwl_rxon_context *ctx;
1086
1087#define CHK(test, flag) do { \
1088 if (*total_flags & (test)) \
1089 filter_or |= (flag); \
1090 else \
1091 filter_nand |= (flag); \
1092 } while (0)
1093
1094 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1095 changed_flags, *total_flags);
1096
1097 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
1098
1099 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
1100 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
1101
1102#undef CHK
1103
1104 mutex_lock(&priv->mutex);
1105
1106 for_each_context(priv, ctx) {
1107 ctx->staging.filter_flags &= ~filter_nand;
1108 ctx->staging.filter_flags |= filter_or;
1109
1110
1111
1112
1113
1114 }
1115
1116 mutex_unlock(&priv->mutex);
1117
1118
1119
1120
1121
1122
1123
1124 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1125 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1126}
1127
1128static void iwlagn_mac_flush(struct ieee80211_hw *hw, u32 queues, bool drop)
1129{
1130 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1131
1132 mutex_lock(&priv->mutex);
1133 IWL_DEBUG_MAC80211(priv, "enter\n");
1134
1135 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1136 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
1137 goto done;
1138 }
1139 if (iwl_is_rfkill(priv)) {
1140 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
1141 goto done;
1142 }
1143
1144
1145
1146
1147
1148 if (drop) {
1149 IWL_DEBUG_MAC80211(priv, "send flush command\n");
1150 if (iwlagn_txfifo_flush(priv, 0)) {
1151 IWL_ERR(priv, "flush request fail\n");
1152 goto done;
1153 }
1154 }
1155 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
1156 iwl_trans_wait_tx_queue_empty(priv->trans);
1157done:
1158 mutex_unlock(&priv->mutex);
1159 IWL_DEBUG_MAC80211(priv, "leave\n");
1160}
1161
1162static int iwlagn_mac_remain_on_channel(struct ieee80211_hw *hw,
1163 struct ieee80211_vif *vif,
1164 struct ieee80211_channel *channel,
1165 int duration,
1166 enum ieee80211_roc_type type)
1167{
1168 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1169 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1170 int err = 0;
1171
1172 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
1173 return -EOPNOTSUPP;
1174
1175 if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
1176 return -EOPNOTSUPP;
1177
1178 IWL_DEBUG_MAC80211(priv, "enter\n");
1179 mutex_lock(&priv->mutex);
1180
1181 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
1182
1183 if (WARN_ON_ONCE(priv->scan_type != IWL_SCAN_RADIO_RESET)) {
1184 err = -EBUSY;
1185 goto out;
1186 }
1187
1188 iwl_scan_cancel_timeout(priv, 100);
1189
1190 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
1191 err = -EBUSY;
1192 goto out;
1193 }
1194 }
1195
1196 priv->hw_roc_channel = channel;
1197
1198 priv->hw_roc_duration = DIV_ROUND_UP(1000 * duration, 1024);
1199 priv->hw_roc_start_notified = false;
1200 cancel_delayed_work(&priv->hw_roc_disable_work);
1201
1202 if (!ctx->is_active) {
1203 static const struct iwl_qos_info default_qos_data = {
1204 .def_qos_parm = {
1205 .ac[0] = {
1206 .cw_min = cpu_to_le16(3),
1207 .cw_max = cpu_to_le16(7),
1208 .aifsn = 2,
1209 .edca_txop = cpu_to_le16(1504),
1210 },
1211 .ac[1] = {
1212 .cw_min = cpu_to_le16(7),
1213 .cw_max = cpu_to_le16(15),
1214 .aifsn = 2,
1215 .edca_txop = cpu_to_le16(3008),
1216 },
1217 .ac[2] = {
1218 .cw_min = cpu_to_le16(15),
1219 .cw_max = cpu_to_le16(1023),
1220 .aifsn = 3,
1221 },
1222 .ac[3] = {
1223 .cw_min = cpu_to_le16(15),
1224 .cw_max = cpu_to_le16(1023),
1225 .aifsn = 7,
1226 },
1227 },
1228 };
1229
1230 ctx->is_active = true;
1231 ctx->qos_data = default_qos_data;
1232 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1233 memcpy(ctx->staging.node_addr,
1234 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
1235 ETH_ALEN);
1236 memcpy(ctx->staging.bssid_addr,
1237 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
1238 ETH_ALEN);
1239 err = iwlagn_commit_rxon(priv, ctx);
1240 if (err)
1241 goto out;
1242 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
1243 RXON_FILTER_PROMISC_MSK |
1244 RXON_FILTER_CTL2HOST_MSK;
1245
1246 err = iwlagn_commit_rxon(priv, ctx);
1247 if (err) {
1248 iwlagn_disable_roc(priv);
1249 goto out;
1250 }
1251 priv->hw_roc_setup = true;
1252 }
1253
1254 err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
1255 if (err)
1256 iwlagn_disable_roc(priv);
1257
1258 out:
1259 mutex_unlock(&priv->mutex);
1260 IWL_DEBUG_MAC80211(priv, "leave\n");
1261
1262 return err;
1263}
1264
1265static int iwlagn_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
1266{
1267 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1268
1269 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
1270 return -EOPNOTSUPP;
1271
1272 IWL_DEBUG_MAC80211(priv, "enter\n");
1273 mutex_lock(&priv->mutex);
1274 iwl_scan_cancel_timeout(priv, priv->hw_roc_duration);
1275 iwlagn_disable_roc(priv);
1276 mutex_unlock(&priv->mutex);
1277 IWL_DEBUG_MAC80211(priv, "leave\n");
1278
1279 return 0;
1280}
1281
1282static void iwlagn_mac_rssi_callback(struct ieee80211_hw *hw,
1283 struct ieee80211_vif *vif,
1284 enum ieee80211_rssi_event rssi_event)
1285{
1286 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1287
1288 IWL_DEBUG_MAC80211(priv, "enter\n");
1289 mutex_lock(&priv->mutex);
1290
1291 if (priv->lib->bt_params &&
1292 priv->lib->bt_params->advanced_bt_coexist) {
1293 if (rssi_event == RSSI_EVENT_LOW)
1294 priv->bt_enable_pspoll = true;
1295 else if (rssi_event == RSSI_EVENT_HIGH)
1296 priv->bt_enable_pspoll = false;
1297
1298 iwlagn_send_advance_bt_config(priv);
1299 } else {
1300 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
1301 "ignoring RSSI callback\n");
1302 }
1303
1304 mutex_unlock(&priv->mutex);
1305 IWL_DEBUG_MAC80211(priv, "leave\n");
1306}
1307
1308static int iwlagn_mac_set_tim(struct ieee80211_hw *hw,
1309 struct ieee80211_sta *sta, bool set)
1310{
1311 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1312
1313 queue_work(priv->workqueue, &priv->beacon_update);
1314
1315 return 0;
1316}
1317
1318static int iwlagn_mac_conf_tx(struct ieee80211_hw *hw,
1319 struct ieee80211_vif *vif, u16 queue,
1320 const struct ieee80211_tx_queue_params *params)
1321{
1322 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1323 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1324 struct iwl_rxon_context *ctx = vif_priv->ctx;
1325 int q;
1326
1327 if (WARN_ON(!ctx))
1328 return -EINVAL;
1329
1330 IWL_DEBUG_MAC80211(priv, "enter\n");
1331
1332 if (!iwl_is_ready_rf(priv)) {
1333 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
1334 return -EIO;
1335 }
1336
1337 if (queue >= AC_NUM) {
1338 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
1339 return 0;
1340 }
1341
1342 q = AC_NUM - 1 - queue;
1343
1344 mutex_lock(&priv->mutex);
1345
1346 ctx->qos_data.def_qos_parm.ac[q].cw_min =
1347 cpu_to_le16(params->cw_min);
1348 ctx->qos_data.def_qos_parm.ac[q].cw_max =
1349 cpu_to_le16(params->cw_max);
1350 ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
1351 ctx->qos_data.def_qos_parm.ac[q].edca_txop =
1352 cpu_to_le16((params->txop * 32));
1353
1354 ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0;
1355
1356 mutex_unlock(&priv->mutex);
1357
1358 IWL_DEBUG_MAC80211(priv, "leave\n");
1359 return 0;
1360}
1361
1362static int iwlagn_mac_tx_last_beacon(struct ieee80211_hw *hw)
1363{
1364 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1365
1366 return priv->ibss_manager == IWL_IBSS_MANAGER;
1367}
1368
1369static int iwl_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
1370{
1371 iwl_connection_init_rx_config(priv, ctx);
1372
1373 iwlagn_set_rxon_chain(priv, ctx);
1374
1375 return iwlagn_commit_rxon(priv, ctx);
1376}
1377
1378static int iwl_setup_interface(struct iwl_priv *priv,
1379 struct iwl_rxon_context *ctx)
1380{
1381 struct ieee80211_vif *vif = ctx->vif;
1382 int err, ac;
1383
1384 lockdep_assert_held(&priv->mutex);
1385
1386
1387
1388
1389
1390
1391 priv->iw_mode = vif->type;
1392
1393 ctx->is_active = true;
1394
1395 err = iwl_set_mode(priv, ctx);
1396 if (err) {
1397 if (!ctx->always_active)
1398 ctx->is_active = false;
1399 return err;
1400 }
1401
1402 if (priv->lib->bt_params && priv->lib->bt_params->advanced_bt_coexist &&
1403 vif->type == NL80211_IFTYPE_ADHOC) {
1404
1405
1406
1407
1408
1409 priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
1410 }
1411
1412
1413 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
1414 vif->hw_queue[ac] = ctx->ac_to_queue[ac];
1415
1416 if (vif->type == NL80211_IFTYPE_AP)
1417 vif->cab_queue = ctx->mcast_queue;
1418 else
1419 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
1420
1421 return 0;
1422}
1423
1424static int iwlagn_mac_add_interface(struct ieee80211_hw *hw,
1425 struct ieee80211_vif *vif)
1426{
1427 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1428 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1429 struct iwl_rxon_context *tmp, *ctx = NULL;
1430 int err;
1431 enum nl80211_iftype viftype = ieee80211_vif_type_p2p(vif);
1432 bool reset = false;
1433
1434 IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n",
1435 viftype, vif->addr);
1436
1437 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1438
1439 mutex_lock(&priv->mutex);
1440
1441 iwlagn_disable_roc(priv);
1442
1443 if (!iwl_is_ready_rf(priv)) {
1444 IWL_WARN(priv, "Try to add interface when device not ready\n");
1445 err = -EINVAL;
1446 goto out;
1447 }
1448
1449 for_each_context(priv, tmp) {
1450 u32 possible_modes =
1451 tmp->interface_modes | tmp->exclusive_interface_modes;
1452
1453 if (tmp->vif) {
1454
1455 if (tmp->vif == vif) {
1456 reset = true;
1457 ctx = tmp;
1458 break;
1459 }
1460
1461
1462 if (tmp->exclusive_interface_modes &
1463 BIT(tmp->vif->type)) {
1464 err = -EINVAL;
1465 goto out;
1466 }
1467 continue;
1468 }
1469
1470 if (!(possible_modes & BIT(viftype)))
1471 continue;
1472
1473
1474 ctx = tmp;
1475 break;
1476 }
1477
1478 if (!ctx) {
1479 err = -EOPNOTSUPP;
1480 goto out;
1481 }
1482
1483 vif_priv->ctx = ctx;
1484 ctx->vif = vif;
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495 if (vif->type == NL80211_IFTYPE_MONITOR)
1496 priv->hw->flags |= IEEE80211_HW_RX_INCLUDES_FCS;
1497 else
1498 priv->hw->flags &= ~IEEE80211_HW_RX_INCLUDES_FCS;
1499
1500 err = iwl_setup_interface(priv, ctx);
1501 if (!err || reset)
1502 goto out;
1503
1504 ctx->vif = NULL;
1505 priv->iw_mode = NL80211_IFTYPE_STATION;
1506 out:
1507 mutex_unlock(&priv->mutex);
1508
1509 IWL_DEBUG_MAC80211(priv, "leave\n");
1510 return err;
1511}
1512
1513static void iwl_teardown_interface(struct iwl_priv *priv,
1514 struct ieee80211_vif *vif,
1515 bool mode_change)
1516{
1517 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1518
1519 lockdep_assert_held(&priv->mutex);
1520
1521 if (priv->scan_vif == vif) {
1522 iwl_scan_cancel_timeout(priv, 200);
1523 iwl_force_scan_end(priv);
1524 }
1525
1526 if (!mode_change) {
1527 iwl_set_mode(priv, ctx);
1528 if (!ctx->always_active)
1529 ctx->is_active = false;
1530 }
1531
1532
1533
1534
1535
1536
1537
1538
1539 if (vif->type == NL80211_IFTYPE_ADHOC)
1540 priv->bt_traffic_load = priv->last_bt_traffic_load;
1541}
1542
1543static void iwlagn_mac_remove_interface(struct ieee80211_hw *hw,
1544 struct ieee80211_vif *vif)
1545{
1546 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1547 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1548
1549 IWL_DEBUG_MAC80211(priv, "enter\n");
1550
1551 mutex_lock(&priv->mutex);
1552
1553 if (WARN_ON(ctx->vif != vif)) {
1554 struct iwl_rxon_context *tmp;
1555 IWL_ERR(priv, "ctx->vif = %p, vif = %p\n", ctx->vif, vif);
1556 for_each_context(priv, tmp)
1557 IWL_ERR(priv, "\tID = %d:\tctx = %p\tctx->vif = %p\n",
1558 tmp->ctxid, tmp, tmp->vif);
1559 }
1560 ctx->vif = NULL;
1561
1562 iwl_teardown_interface(priv, vif, false);
1563
1564 mutex_unlock(&priv->mutex);
1565
1566 IWL_DEBUG_MAC80211(priv, "leave\n");
1567
1568}
1569
1570static int iwlagn_mac_change_interface(struct ieee80211_hw *hw,
1571 struct ieee80211_vif *vif,
1572 enum nl80211_iftype newtype, bool newp2p)
1573{
1574 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1575 struct iwl_rxon_context *ctx, *tmp;
1576 enum nl80211_iftype newviftype = newtype;
1577 u32 interface_modes;
1578 int err;
1579
1580 IWL_DEBUG_MAC80211(priv, "enter\n");
1581
1582 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1583
1584 mutex_lock(&priv->mutex);
1585
1586 ctx = iwl_rxon_ctx_from_vif(vif);
1587
1588
1589
1590
1591
1592
1593 if (ctx->ctxid != IWL_RXON_CTX_BSS) {
1594 err = -EBUSY;
1595 goto out;
1596 }
1597
1598 if (!ctx->vif || !iwl_is_ready_rf(priv)) {
1599
1600
1601
1602
1603 err = -EBUSY;
1604 goto out;
1605 }
1606
1607
1608 interface_modes = ctx->interface_modes | ctx->exclusive_interface_modes;
1609 if (!(interface_modes & BIT(newtype))) {
1610 err = -EBUSY;
1611 goto out;
1612 }
1613
1614 if (ctx->exclusive_interface_modes & BIT(newtype)) {
1615 for_each_context(priv, tmp) {
1616 if (ctx == tmp)
1617 continue;
1618
1619 if (!tmp->is_active)
1620 continue;
1621
1622
1623
1624
1625
1626 err = -EBUSY;
1627 goto out;
1628 }
1629 }
1630
1631
1632 iwl_teardown_interface(priv, vif, true);
1633 vif->type = newviftype;
1634 vif->p2p = newp2p;
1635 err = iwl_setup_interface(priv, ctx);
1636 WARN_ON(err);
1637
1638
1639
1640
1641
1642
1643
1644 err = 0;
1645
1646 out:
1647 mutex_unlock(&priv->mutex);
1648 IWL_DEBUG_MAC80211(priv, "leave\n");
1649
1650 return err;
1651}
1652
1653static int iwlagn_mac_hw_scan(struct ieee80211_hw *hw,
1654 struct ieee80211_vif *vif,
1655 struct cfg80211_scan_request *req)
1656{
1657 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1658 int ret;
1659
1660 IWL_DEBUG_MAC80211(priv, "enter\n");
1661
1662 if (req->n_channels == 0)
1663 return -EINVAL;
1664
1665 mutex_lock(&priv->mutex);
1666
1667
1668
1669
1670
1671 if (priv->scan_type != IWL_SCAN_NORMAL) {
1672 IWL_DEBUG_SCAN(priv,
1673 "SCAN request during internal scan - defer\n");
1674 priv->scan_request = req;
1675 priv->scan_vif = vif;
1676 ret = 0;
1677 } else {
1678 priv->scan_request = req;
1679 priv->scan_vif = vif;
1680
1681
1682
1683
1684 ret = iwl_scan_initiate(priv, vif, IWL_SCAN_NORMAL,
1685 req->channels[0]->band);
1686 if (ret) {
1687 priv->scan_request = NULL;
1688 priv->scan_vif = NULL;
1689 }
1690 }
1691
1692 IWL_DEBUG_MAC80211(priv, "leave\n");
1693
1694 mutex_unlock(&priv->mutex);
1695
1696 return ret;
1697}
1698
1699static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1700{
1701 struct iwl_addsta_cmd cmd = {
1702 .mode = STA_CONTROL_MODIFY_MSK,
1703 .station_flags_msk = STA_FLG_PWR_SAVE_MSK,
1704 .sta.sta_id = sta_id,
1705 };
1706
1707 iwl_send_add_sta(priv, &cmd, CMD_ASYNC);
1708}
1709
1710static void iwlagn_mac_sta_notify(struct ieee80211_hw *hw,
1711 struct ieee80211_vif *vif,
1712 enum sta_notify_cmd cmd,
1713 struct ieee80211_sta *sta)
1714{
1715 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1716 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
1717 int sta_id;
1718
1719 IWL_DEBUG_MAC80211(priv, "enter\n");
1720
1721 switch (cmd) {
1722 case STA_NOTIFY_SLEEP:
1723 WARN_ON(!sta_priv->client);
1724 sta_priv->asleep = true;
1725 if (atomic_read(&sta_priv->pending_frames) > 0)
1726 ieee80211_sta_block_awake(hw, sta, true);
1727 break;
1728 case STA_NOTIFY_AWAKE:
1729 WARN_ON(!sta_priv->client);
1730 if (!sta_priv->asleep)
1731 break;
1732 sta_priv->asleep = false;
1733 sta_id = iwl_sta_id(sta);
1734 if (sta_id != IWL_INVALID_STATION)
1735 iwl_sta_modify_ps_wake(priv, sta_id);
1736 break;
1737 default:
1738 break;
1739 }
1740 IWL_DEBUG_MAC80211(priv, "leave\n");
1741}
1742
1743struct ieee80211_ops iwlagn_hw_ops = {
1744 .tx = iwlagn_mac_tx,
1745 .start = iwlagn_mac_start,
1746 .stop = iwlagn_mac_stop,
1747#ifdef CONFIG_PM_SLEEP
1748 .suspend = iwlagn_mac_suspend,
1749 .resume = iwlagn_mac_resume,
1750 .set_wakeup = iwlagn_mac_set_wakeup,
1751#endif
1752 .add_interface = iwlagn_mac_add_interface,
1753 .remove_interface = iwlagn_mac_remove_interface,
1754 .change_interface = iwlagn_mac_change_interface,
1755 .config = iwlagn_mac_config,
1756 .configure_filter = iwlagn_configure_filter,
1757 .set_key = iwlagn_mac_set_key,
1758 .update_tkip_key = iwlagn_mac_update_tkip_key,
1759 .set_rekey_data = iwlagn_mac_set_rekey_data,
1760 .conf_tx = iwlagn_mac_conf_tx,
1761 .bss_info_changed = iwlagn_bss_info_changed,
1762 .ampdu_action = iwlagn_mac_ampdu_action,
1763 .hw_scan = iwlagn_mac_hw_scan,
1764 .sta_notify = iwlagn_mac_sta_notify,
1765 .sta_state = iwlagn_mac_sta_state,
1766 .channel_switch = iwlagn_mac_channel_switch,
1767 .flush = iwlagn_mac_flush,
1768 .tx_last_beacon = iwlagn_mac_tx_last_beacon,
1769 .remain_on_channel = iwlagn_mac_remain_on_channel,
1770 .cancel_remain_on_channel = iwlagn_mac_cancel_remain_on_channel,
1771 .rssi_callback = iwlagn_mac_rssi_callback,
1772 .set_tim = iwlagn_mac_set_tim,
1773};
1774
1775
1776struct ieee80211_hw *iwl_alloc_all(void)
1777{
1778 struct iwl_priv *priv;
1779 struct iwl_op_mode *op_mode;
1780
1781
1782 struct ieee80211_hw *hw;
1783
1784 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv) +
1785 sizeof(struct iwl_op_mode), &iwlagn_hw_ops);
1786 if (!hw)
1787 goto out;
1788
1789 op_mode = hw->priv;
1790 priv = IWL_OP_MODE_GET_DVM(op_mode);
1791 priv->hw = hw;
1792
1793out:
1794 return hw;
1795}
1796
