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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/mac80211.h>
42
43#include <asm/div64.h>
44
45#include "iwl-eeprom.h"
46#include "iwl-dev.h"
47#include "iwl-core.h"
48#include "iwl-io.h"
49#include "iwl-agn-calib.h"
50#include "iwl-agn.h"
51#include "iwl-shared.h"
52#include "iwl-trans.h"
53#include "iwl-op-mode.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_PERIOD |
149 IEEE80211_HW_SPECTRUM_MGMT |
150 IEEE80211_HW_REPORTS_TX_ACK_STATUS;
151
152
153
154
155
156
157
158
159 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
160 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
161
162 if (hw_params(priv).sku & EEPROM_SKU_CAP_11N_ENABLE)
163 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
164 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
165
166#ifndef CONFIG_IWLWIFI_EXPERIMENTAL_MFP
167
168 if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
169#endif
170 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
171
172 hw->sta_data_size = sizeof(struct iwl_station_priv);
173 hw->vif_data_size = sizeof(struct iwl_vif_priv);
174
175 for_each_context(priv, ctx) {
176 hw->wiphy->interface_modes |= ctx->interface_modes;
177 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
178 }
179
180 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
181
182 if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
183 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
184 hw->wiphy->n_iface_combinations =
185 ARRAY_SIZE(iwlagn_iface_combinations_p2p);
186 } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
187 hw->wiphy->iface_combinations =
188 iwlagn_iface_combinations_dualmode;
189 hw->wiphy->n_iface_combinations =
190 ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
191 }
192
193 hw->wiphy->max_remain_on_channel_duration = 1000;
194
195 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
196 WIPHY_FLAG_DISABLE_BEACON_HINTS |
197 WIPHY_FLAG_IBSS_RSN;
198
199 if (priv->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
200 trans(priv)->ops->wowlan_suspend &&
201 device_can_wakeup(trans(priv)->dev)) {
202 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
203 WIPHY_WOWLAN_DISCONNECT |
204 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
205 WIPHY_WOWLAN_RFKILL_RELEASE;
206 if (!iwlagn_mod_params.sw_crypto)
207 hw->wiphy->wowlan.flags |=
208 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
209 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
210
211 hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
212 hw->wiphy->wowlan.pattern_min_len =
213 IWLAGN_WOWLAN_MIN_PATTERN_LEN;
214 hw->wiphy->wowlan.pattern_max_len =
215 IWLAGN_WOWLAN_MAX_PATTERN_LEN;
216 }
217
218 if (iwlagn_mod_params.power_save)
219 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
220 else
221 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
222
223 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
224
225 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
226
227
228 hw->queues = 4;
229
230 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
231
232 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
233 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
234 &priv->bands[IEEE80211_BAND_2GHZ];
235 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
236 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
237 &priv->bands[IEEE80211_BAND_5GHZ];
238
239 hw->wiphy->hw_version = trans(priv)->hw_id;
240
241 iwl_leds_init(priv);
242
243 ret = ieee80211_register_hw(priv->hw);
244 if (ret) {
245 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
246 return ret;
247 }
248 priv->mac80211_registered = 1;
249
250 return 0;
251}
252
253void iwlagn_mac_unregister(struct iwl_priv *priv)
254{
255 if (!priv->mac80211_registered)
256 return;
257 iwl_leds_exit(priv);
258 ieee80211_unregister_hw(priv->hw);
259 priv->mac80211_registered = 0;
260}
261
262static int __iwl_up(struct iwl_priv *priv)
263{
264 struct iwl_rxon_context *ctx;
265 int ret;
266
267 lockdep_assert_held(&priv->mutex);
268
269 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
270 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
271 return -EIO;
272 }
273
274 for_each_context(priv, ctx) {
275 ret = iwlagn_alloc_bcast_station(priv, ctx);
276 if (ret) {
277 iwl_dealloc_bcast_stations(priv);
278 return ret;
279 }
280 }
281
282 ret = iwl_run_init_ucode(priv);
283 if (ret) {
284 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
285 goto error;
286 }
287
288 ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_REGULAR);
289 if (ret) {
290 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
291 goto error;
292 }
293
294 ret = iwl_alive_start(priv);
295 if (ret)
296 goto error;
297 return 0;
298
299 error:
300 set_bit(STATUS_EXIT_PENDING, &priv->status);
301 iwl_down(priv);
302 clear_bit(STATUS_EXIT_PENDING, &priv->status);
303
304 IWL_ERR(priv, "Unable to initialize device.\n");
305 return ret;
306}
307
308static int iwlagn_mac_start(struct ieee80211_hw *hw)
309{
310 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
311 int ret;
312
313 IWL_DEBUG_MAC80211(priv, "enter\n");
314
315
316 mutex_lock(&priv->mutex);
317 ret = __iwl_up(priv);
318 mutex_unlock(&priv->mutex);
319 if (ret)
320 return ret;
321
322 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
323
324
325 if (WARN_ON(!test_bit(STATUS_READY, &priv->status)))
326 ret = -EIO;
327
328 iwlagn_led_enable(priv);
329
330 priv->is_open = 1;
331 IWL_DEBUG_MAC80211(priv, "leave\n");
332 return 0;
333}
334
335static void iwlagn_mac_stop(struct ieee80211_hw *hw)
336{
337 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
338
339 IWL_DEBUG_MAC80211(priv, "enter\n");
340
341 if (!priv->is_open)
342 return;
343
344 priv->is_open = 0;
345
346 mutex_lock(&priv->mutex);
347 iwl_down(priv);
348 mutex_unlock(&priv->mutex);
349
350 iwl_cancel_deferred_work(priv);
351
352 flush_workqueue(priv->workqueue);
353
354
355
356
357
358 iwl_trans_stop_hw(trans(priv));
359
360 IWL_DEBUG_MAC80211(priv, "leave\n");
361}
362
363static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
364 struct ieee80211_vif *vif,
365 struct cfg80211_gtk_rekey_data *data)
366{
367 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
368
369 if (iwlagn_mod_params.sw_crypto)
370 return;
371
372 IWL_DEBUG_MAC80211(priv, "enter\n");
373 mutex_lock(&priv->mutex);
374
375 if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
376 goto out;
377
378 memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
379 memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
380 priv->replay_ctr =
381 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
382 priv->have_rekey_data = true;
383
384 out:
385 mutex_unlock(&priv->mutex);
386 IWL_DEBUG_MAC80211(priv, "leave\n");
387}
388
389#ifdef CONFIG_PM_SLEEP
390
391static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
392 struct cfg80211_wowlan *wowlan)
393{
394 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
395 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
396 int ret;
397
398 if (WARN_ON(!wowlan))
399 return -EINVAL;
400
401 IWL_DEBUG_MAC80211(priv, "enter\n");
402 mutex_lock(&priv->mutex);
403
404
405 if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
406 !iwl_is_associated_ctx(ctx)) {
407 ret = 1;
408 goto out;
409 }
410
411 ret = iwlagn_suspend(priv, wowlan);
412 if (ret)
413 goto error;
414
415 device_set_wakeup_enable(trans(priv)->dev, true);
416
417 iwl_trans_wowlan_suspend(trans(priv));
418
419 goto out;
420
421 error:
422 priv->wowlan = false;
423 iwlagn_prepare_restart(priv);
424 ieee80211_restart_hw(priv->hw);
425 out:
426 mutex_unlock(&priv->mutex);
427 IWL_DEBUG_MAC80211(priv, "leave\n");
428
429 return ret;
430}
431
432static int iwlagn_mac_resume(struct ieee80211_hw *hw)
433{
434 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
435 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
436 struct ieee80211_vif *vif;
437 unsigned long flags;
438 u32 base, status = 0xffffffff;
439 int ret = -EIO;
440 const struct fw_img *img;
441
442 IWL_DEBUG_MAC80211(priv, "enter\n");
443 mutex_lock(&priv->mutex);
444
445 iwl_write32(trans(priv), CSR_UCODE_DRV_GP1_CLR,
446 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
447
448 base = priv->shrd->device_pointers.error_event_table;
449 if (iwlagn_hw_valid_rtc_data_addr(base)) {
450 spin_lock_irqsave(&trans(priv)->reg_lock, flags);
451 ret = iwl_grab_nic_access_silent(trans(priv));
452 if (likely(ret == 0)) {
453 iwl_write32(trans(priv), HBUS_TARG_MEM_RADDR, base);
454 status = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
455 iwl_release_nic_access(trans(priv));
456 }
457 spin_unlock_irqrestore(&trans(priv)->reg_lock, flags);
458
459#ifdef CONFIG_IWLWIFI_DEBUGFS
460 if (ret == 0) {
461 img = &(priv->fw->img[IWL_UCODE_WOWLAN]);
462 if (!priv->wowlan_sram) {
463 priv->wowlan_sram =
464 kzalloc(img->sec[IWL_UCODE_SECTION_DATA].len,
465 GFP_KERNEL);
466 }
467
468 if (priv->wowlan_sram)
469 _iwl_read_targ_mem_words(
470 trans(priv), 0x800000,
471 priv->wowlan_sram,
472 img->sec[IWL_UCODE_SECTION_DATA].len / 4);
473 }
474#endif
475 }
476
477
478 vif = ctx->vif;
479
480 priv->wowlan = false;
481
482 device_set_wakeup_enable(trans(priv)->dev, false);
483
484 iwlagn_prepare_restart(priv);
485
486 memset((void *)&ctx->active, 0, sizeof(ctx->active));
487 iwl_connection_init_rx_config(priv, ctx);
488 iwlagn_set_rxon_chain(priv, ctx);
489
490 mutex_unlock(&priv->mutex);
491 IWL_DEBUG_MAC80211(priv, "leave\n");
492
493 ieee80211_resume_disconnect(vif);
494
495 return 1;
496}
497
498#endif
499
500static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
501{
502 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
503
504 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
505 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
506
507 if (iwlagn_tx_skb(priv, skb))
508 dev_kfree_skb_any(skb);
509}
510
511static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
512 struct ieee80211_vif *vif,
513 struct ieee80211_key_conf *keyconf,
514 struct ieee80211_sta *sta,
515 u32 iv32, u16 *phase1key)
516{
517 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
518
519 iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
520}
521
522static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
523 struct ieee80211_vif *vif,
524 struct ieee80211_sta *sta,
525 struct ieee80211_key_conf *key)
526{
527 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
528 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
529 struct iwl_rxon_context *ctx = vif_priv->ctx;
530 int ret;
531 bool is_default_wep_key = false;
532
533 IWL_DEBUG_MAC80211(priv, "enter\n");
534
535 if (iwlagn_mod_params.sw_crypto) {
536 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
537 return -EOPNOTSUPP;
538 }
539
540 switch (key->cipher) {
541 case WLAN_CIPHER_SUITE_TKIP:
542 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
543
544 case WLAN_CIPHER_SUITE_CCMP:
545 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
546 break;
547 default:
548 break;
549 }
550
551
552
553
554
555
556
557
558 if (vif->type == NL80211_IFTYPE_ADHOC &&
559 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
560 key->hw_key_idx = WEP_INVALID_OFFSET;
561 return 0;
562 }
563
564
565 if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
566 return 0;
567
568 mutex_lock(&priv->mutex);
569 iwl_scan_cancel_timeout(priv, 100);
570
571 BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
572
573
574
575
576
577
578
579 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
580 key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
581 if (cmd == SET_KEY)
582 is_default_wep_key = !ctx->key_mapping_keys;
583 else
584 is_default_wep_key =
585 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
586 }
587
588
589 switch (cmd) {
590 case SET_KEY:
591 if (is_default_wep_key) {
592 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
593 break;
594 }
595 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
596 if (ret) {
597
598
599
600
601 ret = 0;
602 key->hw_key_idx = WEP_INVALID_OFFSET;
603 }
604
605 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
606 break;
607 case DISABLE_KEY:
608 if (is_default_wep_key)
609 ret = iwl_remove_default_wep_key(priv, ctx, key);
610 else
611 ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
612
613 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
614 break;
615 default:
616 ret = -EINVAL;
617 }
618
619 mutex_unlock(&priv->mutex);
620 IWL_DEBUG_MAC80211(priv, "leave\n");
621
622 return ret;
623}
624
625static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
626 struct ieee80211_vif *vif,
627 enum ieee80211_ampdu_mlme_action action,
628 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
629 u8 buf_size)
630{
631 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
632 int ret = -EINVAL;
633 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
634
635 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
636 sta->addr, tid);
637
638 if (!(hw_params(priv).sku & EEPROM_SKU_CAP_11N_ENABLE))
639 return -EACCES;
640
641 IWL_DEBUG_MAC80211(priv, "enter\n");
642 mutex_lock(&priv->mutex);
643
644 switch (action) {
645 case IEEE80211_AMPDU_RX_START:
646 if (iwlagn_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
647 break;
648 IWL_DEBUG_HT(priv, "start Rx\n");
649 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
650 break;
651 case IEEE80211_AMPDU_RX_STOP:
652 IWL_DEBUG_HT(priv, "stop Rx\n");
653 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
654 break;
655 case IEEE80211_AMPDU_TX_START:
656 if (iwlagn_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
657 break;
658 IWL_DEBUG_HT(priv, "start Tx\n");
659 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
660 break;
661 case IEEE80211_AMPDU_TX_STOP:
662 IWL_DEBUG_HT(priv, "stop Tx\n");
663 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
664 if ((ret == 0) && (priv->agg_tids_count > 0)) {
665 priv->agg_tids_count--;
666 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
667 priv->agg_tids_count);
668 }
669 if (!priv->agg_tids_count &&
670 hw_params(priv).use_rts_for_aggregation) {
671
672
673
674 sta_priv->lq_sta.lq.general_params.flags &=
675 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
676 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
677 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
678 }
679 break;
680 case IEEE80211_AMPDU_TX_OPERATIONAL:
681 ret = iwlagn_tx_agg_oper(priv, vif, sta, tid, buf_size);
682 break;
683 }
684 mutex_unlock(&priv->mutex);
685 IWL_DEBUG_MAC80211(priv, "leave\n");
686 return ret;
687}
688
689static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
690 struct ieee80211_vif *vif,
691 struct ieee80211_sta *sta)
692{
693 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
694 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
695 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
696 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
697 int ret;
698 u8 sta_id;
699
700 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
701 sta->addr);
702 sta_priv->sta_id = IWL_INVALID_STATION;
703
704 atomic_set(&sta_priv->pending_frames, 0);
705 if (vif->type == NL80211_IFTYPE_AP)
706 sta_priv->client = true;
707
708 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
709 is_ap, sta, &sta_id);
710 if (ret) {
711 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
712 sta->addr, ret);
713
714 return ret;
715 }
716
717 sta_priv->sta_id = sta_id;
718
719 return 0;
720}
721
722static int iwlagn_mac_sta_remove(struct ieee80211_hw *hw,
723 struct ieee80211_vif *vif,
724 struct ieee80211_sta *sta)
725{
726 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
727 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
728 int ret;
729
730 IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n", sta->addr);
731
732 if (vif->type == NL80211_IFTYPE_STATION) {
733
734
735
736
737
738 ret = 0;
739 iwl_deactivate_station(priv, sta_priv->sta_id, sta->addr);
740 } else {
741 ret = iwl_remove_station(priv, sta_priv->sta_id, sta->addr);
742 if (ret)
743 IWL_DEBUG_QUIET_RFKILL(priv,
744 "Error removing station %pM\n", sta->addr);
745 }
746 return ret;
747}
748
749static int iwlagn_mac_sta_state(struct ieee80211_hw *hw,
750 struct ieee80211_vif *vif,
751 struct ieee80211_sta *sta,
752 enum ieee80211_sta_state old_state,
753 enum ieee80211_sta_state new_state)
754{
755 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
756 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
757 enum {
758 NONE, ADD, REMOVE, HT_RATE_INIT, ADD_RATE_INIT,
759 } op = NONE;
760 int ret;
761
762 IWL_DEBUG_MAC80211(priv, "station %pM state change %d->%d\n",
763 sta->addr, old_state, new_state);
764
765 mutex_lock(&priv->mutex);
766 if (vif->type == NL80211_IFTYPE_STATION) {
767 if (old_state == IEEE80211_STA_NOTEXIST &&
768 new_state == IEEE80211_STA_NONE)
769 op = ADD;
770 else if (old_state == IEEE80211_STA_NONE &&
771 new_state == IEEE80211_STA_NOTEXIST)
772 op = REMOVE;
773 else if (old_state == IEEE80211_STA_AUTH &&
774 new_state == IEEE80211_STA_ASSOC)
775 op = HT_RATE_INIT;
776 } else {
777 if (old_state == IEEE80211_STA_AUTH &&
778 new_state == IEEE80211_STA_ASSOC)
779 op = ADD_RATE_INIT;
780 else if (old_state == IEEE80211_STA_ASSOC &&
781 new_state == IEEE80211_STA_AUTH)
782 op = REMOVE;
783 }
784
785 switch (op) {
786 case ADD:
787 ret = iwlagn_mac_sta_add(hw, vif, sta);
788 break;
789 case REMOVE:
790 ret = iwlagn_mac_sta_remove(hw, vif, sta);
791 break;
792 case ADD_RATE_INIT:
793 ret = iwlagn_mac_sta_add(hw, vif, sta);
794 if (ret)
795 break;
796
797 IWL_DEBUG_INFO(priv,
798 "Initializing rate scaling for station %pM\n",
799 sta->addr);
800 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
801 ret = 0;
802 break;
803 case HT_RATE_INIT:
804
805 ret = iwl_sta_update_ht(priv, vif_priv->ctx, sta);
806 if (ret)
807 break;
808 IWL_DEBUG_INFO(priv,
809 "Initializing rate scaling for station %pM\n",
810 sta->addr);
811 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
812 ret = 0;
813 break;
814 default:
815 ret = 0;
816 break;
817 }
818
819
820
821
822
823 if (iwl_is_rfkill(priv))
824 ret = 0;
825
826 mutex_unlock(&priv->mutex);
827 IWL_DEBUG_MAC80211(priv, "leave\n");
828
829 return ret;
830}
831
832static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
833 struct ieee80211_channel_switch *ch_switch)
834{
835 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
836 const struct iwl_channel_info *ch_info;
837 struct ieee80211_conf *conf = &hw->conf;
838 struct ieee80211_channel *channel = ch_switch->channel;
839 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
840
841
842
843
844
845
846
847
848 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
849 u16 ch;
850
851 IWL_DEBUG_MAC80211(priv, "enter\n");
852
853 mutex_lock(&priv->mutex);
854
855 if (iwl_is_rfkill(priv))
856 goto out;
857
858 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
859 test_bit(STATUS_SCANNING, &priv->status) ||
860 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
861 goto out;
862
863 if (!iwl_is_associated_ctx(ctx))
864 goto out;
865
866 if (!cfg(priv)->lib->set_channel_switch)
867 goto out;
868
869 ch = channel->hw_value;
870 if (le16_to_cpu(ctx->active.channel) == ch)
871 goto out;
872
873 ch_info = iwl_get_channel_info(priv, channel->band, ch);
874 if (!is_channel_valid(ch_info)) {
875 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
876 goto out;
877 }
878
879 priv->current_ht_config.smps = conf->smps_mode;
880
881
882 ctx->ht.enabled = conf_is_ht(conf);
883 if (ctx->ht.enabled)
884 iwlagn_config_ht40(conf, ctx);
885 else
886 ctx->ht.is_40mhz = false;
887
888 if ((le16_to_cpu(ctx->staging.channel) != ch))
889 ctx->staging.flags = 0;
890
891 iwl_set_rxon_channel(priv, channel, ctx);
892 iwl_set_rxon_ht(priv, ht_conf);
893 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
894
895 iwl_set_rate(priv);
896
897
898
899
900 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
901 priv->switch_channel = cpu_to_le16(ch);
902 if (cfg(priv)->lib->set_channel_switch(priv, ch_switch)) {
903 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
904 priv->switch_channel = 0;
905 ieee80211_chswitch_done(ctx->vif, false);
906 }
907
908out:
909 mutex_unlock(&priv->mutex);
910 IWL_DEBUG_MAC80211(priv, "leave\n");
911}
912
913static void iwlagn_configure_filter(struct ieee80211_hw *hw,
914 unsigned int changed_flags,
915 unsigned int *total_flags,
916 u64 multicast)
917{
918 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
919 __le32 filter_or = 0, filter_nand = 0;
920 struct iwl_rxon_context *ctx;
921
922#define CHK(test, flag) do { \
923 if (*total_flags & (test)) \
924 filter_or |= (flag); \
925 else \
926 filter_nand |= (flag); \
927 } while (0)
928
929 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
930 changed_flags, *total_flags);
931
932 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
933
934 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
935 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
936
937#undef CHK
938
939 mutex_lock(&priv->mutex);
940
941 for_each_context(priv, ctx) {
942 ctx->staging.filter_flags &= ~filter_nand;
943 ctx->staging.filter_flags |= filter_or;
944
945
946
947
948
949 }
950
951 mutex_unlock(&priv->mutex);
952
953
954
955
956
957
958
959 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
960 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
961}
962
963static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
964{
965 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
966
967 mutex_lock(&priv->mutex);
968 IWL_DEBUG_MAC80211(priv, "enter\n");
969
970 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
971 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
972 goto done;
973 }
974 if (iwl_is_rfkill(priv)) {
975 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
976 goto done;
977 }
978
979
980
981
982
983 if (drop) {
984 IWL_DEBUG_MAC80211(priv, "send flush command\n");
985 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
986 IWL_ERR(priv, "flush request fail\n");
987 goto done;
988 }
989 }
990 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
991 iwl_trans_wait_tx_queue_empty(trans(priv));
992done:
993 mutex_unlock(&priv->mutex);
994 IWL_DEBUG_MAC80211(priv, "leave\n");
995}
996
997static int iwlagn_mac_remain_on_channel(struct ieee80211_hw *hw,
998 struct ieee80211_channel *channel,
999 enum nl80211_channel_type channel_type,
1000 int duration)
1001{
1002 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1003 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1004 int err = 0;
1005
1006 if (!(priv->shrd->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
1007 return -EOPNOTSUPP;
1008
1009 if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
1010 return -EOPNOTSUPP;
1011
1012 IWL_DEBUG_MAC80211(priv, "enter\n");
1013 mutex_lock(&priv->mutex);
1014
1015 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
1016 err = -EBUSY;
1017 goto out;
1018 }
1019
1020 priv->hw_roc_channel = channel;
1021 priv->hw_roc_chantype = channel_type;
1022
1023 priv->hw_roc_duration = DIV_ROUND_UP(1000 * duration, 1024);
1024 priv->hw_roc_start_notified = false;
1025 cancel_delayed_work(&priv->hw_roc_disable_work);
1026
1027 if (!ctx->is_active) {
1028 static const struct iwl_qos_info default_qos_data = {
1029 .def_qos_parm = {
1030 .ac[0] = {
1031 .cw_min = cpu_to_le16(3),
1032 .cw_max = cpu_to_le16(7),
1033 .aifsn = 2,
1034 .edca_txop = cpu_to_le16(1504),
1035 },
1036 .ac[1] = {
1037 .cw_min = cpu_to_le16(7),
1038 .cw_max = cpu_to_le16(15),
1039 .aifsn = 2,
1040 .edca_txop = cpu_to_le16(3008),
1041 },
1042 .ac[2] = {
1043 .cw_min = cpu_to_le16(15),
1044 .cw_max = cpu_to_le16(1023),
1045 .aifsn = 3,
1046 },
1047 .ac[3] = {
1048 .cw_min = cpu_to_le16(15),
1049 .cw_max = cpu_to_le16(1023),
1050 .aifsn = 7,
1051 },
1052 },
1053 };
1054
1055 ctx->is_active = true;
1056 ctx->qos_data = default_qos_data;
1057 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1058 memcpy(ctx->staging.node_addr,
1059 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
1060 ETH_ALEN);
1061 memcpy(ctx->staging.bssid_addr,
1062 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
1063 ETH_ALEN);
1064 err = iwlagn_commit_rxon(priv, ctx);
1065 if (err)
1066 goto out;
1067 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
1068 RXON_FILTER_PROMISC_MSK |
1069 RXON_FILTER_CTL2HOST_MSK;
1070
1071 err = iwlagn_commit_rxon(priv, ctx);
1072 if (err) {
1073 iwlagn_disable_roc(priv);
1074 goto out;
1075 }
1076 priv->hw_roc_setup = true;
1077 }
1078
1079 err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
1080 if (err)
1081 iwlagn_disable_roc(priv);
1082
1083 out:
1084 mutex_unlock(&priv->mutex);
1085 IWL_DEBUG_MAC80211(priv, "leave\n");
1086
1087 return err;
1088}
1089
1090static int iwlagn_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
1091{
1092 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1093
1094 if (!(priv->shrd->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
1095 return -EOPNOTSUPP;
1096
1097 IWL_DEBUG_MAC80211(priv, "enter\n");
1098 mutex_lock(&priv->mutex);
1099 iwl_scan_cancel_timeout(priv, priv->hw_roc_duration);
1100 iwlagn_disable_roc(priv);
1101 mutex_unlock(&priv->mutex);
1102 IWL_DEBUG_MAC80211(priv, "leave\n");
1103
1104 return 0;
1105}
1106
1107static void iwlagn_mac_rssi_callback(struct ieee80211_hw *hw,
1108 enum ieee80211_rssi_event rssi_event)
1109{
1110 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1111
1112 IWL_DEBUG_MAC80211(priv, "enter\n");
1113 mutex_lock(&priv->mutex);
1114
1115 if (cfg(priv)->bt_params &&
1116 cfg(priv)->bt_params->advanced_bt_coexist) {
1117 if (rssi_event == RSSI_EVENT_LOW)
1118 priv->bt_enable_pspoll = true;
1119 else if (rssi_event == RSSI_EVENT_HIGH)
1120 priv->bt_enable_pspoll = false;
1121
1122 iwlagn_send_advance_bt_config(priv);
1123 } else {
1124 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
1125 "ignoring RSSI callback\n");
1126 }
1127
1128 mutex_unlock(&priv->mutex);
1129 IWL_DEBUG_MAC80211(priv, "leave\n");
1130}
1131
1132static int iwlagn_mac_set_tim(struct ieee80211_hw *hw,
1133 struct ieee80211_sta *sta, bool set)
1134{
1135 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1136
1137 queue_work(priv->workqueue, &priv->beacon_update);
1138
1139 return 0;
1140}
1141
1142static int iwlagn_mac_conf_tx(struct ieee80211_hw *hw,
1143 struct ieee80211_vif *vif, u16 queue,
1144 const struct ieee80211_tx_queue_params *params)
1145{
1146 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1147 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1148 struct iwl_rxon_context *ctx = vif_priv->ctx;
1149 int q;
1150
1151 if (WARN_ON(!ctx))
1152 return -EINVAL;
1153
1154 IWL_DEBUG_MAC80211(priv, "enter\n");
1155
1156 if (!iwl_is_ready_rf(priv)) {
1157 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
1158 return -EIO;
1159 }
1160
1161 if (queue >= AC_NUM) {
1162 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
1163 return 0;
1164 }
1165
1166 q = AC_NUM - 1 - queue;
1167
1168 mutex_lock(&priv->mutex);
1169
1170 ctx->qos_data.def_qos_parm.ac[q].cw_min =
1171 cpu_to_le16(params->cw_min);
1172 ctx->qos_data.def_qos_parm.ac[q].cw_max =
1173 cpu_to_le16(params->cw_max);
1174 ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
1175 ctx->qos_data.def_qos_parm.ac[q].edca_txop =
1176 cpu_to_le16((params->txop * 32));
1177
1178 ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0;
1179
1180 mutex_unlock(&priv->mutex);
1181
1182 IWL_DEBUG_MAC80211(priv, "leave\n");
1183 return 0;
1184}
1185
1186static int iwlagn_mac_tx_last_beacon(struct ieee80211_hw *hw)
1187{
1188 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1189
1190 return priv->ibss_manager == IWL_IBSS_MANAGER;
1191}
1192
1193static int iwl_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
1194{
1195 iwl_connection_init_rx_config(priv, ctx);
1196
1197 iwlagn_set_rxon_chain(priv, ctx);
1198
1199 return iwlagn_commit_rxon(priv, ctx);
1200}
1201
1202static int iwl_setup_interface(struct iwl_priv *priv,
1203 struct iwl_rxon_context *ctx)
1204{
1205 struct ieee80211_vif *vif = ctx->vif;
1206 int err;
1207
1208 lockdep_assert_held(&priv->mutex);
1209
1210
1211
1212
1213
1214
1215 priv->iw_mode = vif->type;
1216
1217 ctx->is_active = true;
1218
1219 err = iwl_set_mode(priv, ctx);
1220 if (err) {
1221 if (!ctx->always_active)
1222 ctx->is_active = false;
1223 return err;
1224 }
1225
1226 if (cfg(priv)->bt_params && cfg(priv)->bt_params->advanced_bt_coexist &&
1227 vif->type == NL80211_IFTYPE_ADHOC) {
1228
1229
1230
1231
1232
1233 priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
1234 }
1235
1236 return 0;
1237}
1238
1239static int iwlagn_mac_add_interface(struct ieee80211_hw *hw,
1240 struct ieee80211_vif *vif)
1241{
1242 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1243 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1244 struct iwl_rxon_context *tmp, *ctx = NULL;
1245 int err;
1246 enum nl80211_iftype viftype = ieee80211_vif_type_p2p(vif);
1247 bool reset = false;
1248
1249 IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n",
1250 viftype, vif->addr);
1251
1252 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1253
1254 mutex_lock(&priv->mutex);
1255
1256 iwlagn_disable_roc(priv);
1257
1258 if (!iwl_is_ready_rf(priv)) {
1259 IWL_WARN(priv, "Try to add interface when device not ready\n");
1260 err = -EINVAL;
1261 goto out;
1262 }
1263
1264 for_each_context(priv, tmp) {
1265 u32 possible_modes =
1266 tmp->interface_modes | tmp->exclusive_interface_modes;
1267
1268 if (tmp->vif) {
1269
1270 if (tmp->vif == vif) {
1271 reset = true;
1272 ctx = tmp;
1273 break;
1274 }
1275
1276
1277 if (tmp->exclusive_interface_modes &
1278 BIT(tmp->vif->type)) {
1279 err = -EINVAL;
1280 goto out;
1281 }
1282 continue;
1283 }
1284
1285 if (!(possible_modes & BIT(viftype)))
1286 continue;
1287
1288
1289 ctx = tmp;
1290 break;
1291 }
1292
1293 if (!ctx) {
1294 err = -EOPNOTSUPP;
1295 goto out;
1296 }
1297
1298 vif_priv->ctx = ctx;
1299 ctx->vif = vif;
1300
1301 err = iwl_setup_interface(priv, ctx);
1302 if (!err || reset)
1303 goto out;
1304
1305 ctx->vif = NULL;
1306 priv->iw_mode = NL80211_IFTYPE_STATION;
1307 out:
1308 mutex_unlock(&priv->mutex);
1309
1310 IWL_DEBUG_MAC80211(priv, "leave\n");
1311 return err;
1312}
1313
1314static void iwl_teardown_interface(struct iwl_priv *priv,
1315 struct ieee80211_vif *vif,
1316 bool mode_change)
1317{
1318 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1319
1320 lockdep_assert_held(&priv->mutex);
1321
1322 if (priv->scan_vif == vif) {
1323 iwl_scan_cancel_timeout(priv, 200);
1324 iwl_force_scan_end(priv);
1325 }
1326
1327 if (!mode_change) {
1328 iwl_set_mode(priv, ctx);
1329 if (!ctx->always_active)
1330 ctx->is_active = false;
1331 }
1332
1333
1334
1335
1336
1337
1338
1339
1340 if (vif->type == NL80211_IFTYPE_ADHOC)
1341 priv->bt_traffic_load = priv->last_bt_traffic_load;
1342}
1343
1344static void iwlagn_mac_remove_interface(struct ieee80211_hw *hw,
1345 struct ieee80211_vif *vif)
1346{
1347 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1348 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1349
1350 IWL_DEBUG_MAC80211(priv, "enter\n");
1351
1352 mutex_lock(&priv->mutex);
1353
1354 if (WARN_ON(ctx->vif != vif)) {
1355 struct iwl_rxon_context *tmp;
1356 IWL_ERR(priv, "ctx->vif = %p, vif = %p\n", ctx->vif, vif);
1357 for_each_context(priv, tmp)
1358 IWL_ERR(priv, "\tID = %d:\tctx = %p\tctx->vif = %p\n",
1359 tmp->ctxid, tmp, tmp->vif);
1360 }
1361 ctx->vif = NULL;
1362
1363 iwl_teardown_interface(priv, vif, false);
1364
1365 mutex_unlock(&priv->mutex);
1366
1367 IWL_DEBUG_MAC80211(priv, "leave\n");
1368
1369}
1370
1371static int iwlagn_mac_change_interface(struct ieee80211_hw *hw,
1372 struct ieee80211_vif *vif,
1373 enum nl80211_iftype newtype, bool newp2p)
1374{
1375 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1376 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1377 struct iwl_rxon_context *bss_ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1378 struct iwl_rxon_context *tmp;
1379 enum nl80211_iftype newviftype = newtype;
1380 u32 interface_modes;
1381 int err;
1382
1383 IWL_DEBUG_MAC80211(priv, "enter\n");
1384
1385 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1386
1387 mutex_lock(&priv->mutex);
1388
1389 if (!ctx->vif || !iwl_is_ready_rf(priv)) {
1390
1391
1392
1393
1394 err = -EBUSY;
1395 goto out;
1396 }
1397
1398 interface_modes = ctx->interface_modes | ctx->exclusive_interface_modes;
1399
1400 if (!(interface_modes & BIT(newtype))) {
1401 err = -EBUSY;
1402 goto out;
1403 }
1404
1405
1406
1407
1408
1409
1410 if (ctx->ctxid == IWL_RXON_CTX_PAN && !bss_ctx->vif &&
1411 (bss_ctx->interface_modes & BIT(newtype) ||
1412 bss_ctx->exclusive_interface_modes & BIT(newtype))) {
1413 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
1414 err = -EBUSY;
1415 goto out;
1416 }
1417
1418 if (ctx->exclusive_interface_modes & BIT(newtype)) {
1419 for_each_context(priv, tmp) {
1420 if (ctx == tmp)
1421 continue;
1422
1423 if (!tmp->vif)
1424 continue;
1425
1426
1427
1428
1429
1430 err = -EBUSY;
1431 goto out;
1432 }
1433 }
1434
1435
1436 iwl_teardown_interface(priv, vif, true);
1437 vif->type = newviftype;
1438 vif->p2p = newp2p;
1439 err = iwl_setup_interface(priv, ctx);
1440 WARN_ON(err);
1441
1442
1443
1444
1445
1446
1447
1448 err = 0;
1449
1450 out:
1451 mutex_unlock(&priv->mutex);
1452 IWL_DEBUG_MAC80211(priv, "leave\n");
1453
1454 return err;
1455}
1456
1457static int iwlagn_mac_hw_scan(struct ieee80211_hw *hw,
1458 struct ieee80211_vif *vif,
1459 struct cfg80211_scan_request *req)
1460{
1461 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1462 int ret;
1463
1464 IWL_DEBUG_MAC80211(priv, "enter\n");
1465
1466 if (req->n_channels == 0)
1467 return -EINVAL;
1468
1469 mutex_lock(&priv->mutex);
1470
1471
1472
1473
1474
1475 if (priv->scan_type != IWL_SCAN_NORMAL) {
1476 IWL_DEBUG_SCAN(priv,
1477 "SCAN request during internal scan - defer\n");
1478 priv->scan_request = req;
1479 priv->scan_vif = vif;
1480 ret = 0;
1481 } else {
1482 priv->scan_request = req;
1483 priv->scan_vif = vif;
1484
1485
1486
1487
1488 ret = iwl_scan_initiate(priv, vif, IWL_SCAN_NORMAL,
1489 req->channels[0]->band);
1490 if (ret) {
1491 priv->scan_request = NULL;
1492 priv->scan_vif = NULL;
1493 }
1494 }
1495
1496 IWL_DEBUG_MAC80211(priv, "leave\n");
1497
1498 mutex_unlock(&priv->mutex);
1499
1500 return ret;
1501}
1502
1503static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1504{
1505 struct iwl_addsta_cmd cmd = {
1506 .mode = STA_CONTROL_MODIFY_MSK,
1507 .station_flags_msk = STA_FLG_PWR_SAVE_MSK,
1508 .sta.sta_id = sta_id,
1509 };
1510
1511 iwl_send_add_sta(priv, &cmd, CMD_ASYNC);
1512}
1513
1514static void iwlagn_mac_sta_notify(struct ieee80211_hw *hw,
1515 struct ieee80211_vif *vif,
1516 enum sta_notify_cmd cmd,
1517 struct ieee80211_sta *sta)
1518{
1519 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1520 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
1521 int sta_id;
1522
1523 IWL_DEBUG_MAC80211(priv, "enter\n");
1524
1525 switch (cmd) {
1526 case STA_NOTIFY_SLEEP:
1527 WARN_ON(!sta_priv->client);
1528 sta_priv->asleep = true;
1529 if (atomic_read(&sta_priv->pending_frames) > 0)
1530 ieee80211_sta_block_awake(hw, sta, true);
1531 break;
1532 case STA_NOTIFY_AWAKE:
1533 WARN_ON(!sta_priv->client);
1534 if (!sta_priv->asleep)
1535 break;
1536 sta_priv->asleep = false;
1537 sta_id = iwl_sta_id(sta);
1538 if (sta_id != IWL_INVALID_STATION)
1539 iwl_sta_modify_ps_wake(priv, sta_id);
1540 break;
1541 default:
1542 break;
1543 }
1544 IWL_DEBUG_MAC80211(priv, "leave\n");
1545}
1546
1547struct ieee80211_ops iwlagn_hw_ops = {
1548 .tx = iwlagn_mac_tx,
1549 .start = iwlagn_mac_start,
1550 .stop = iwlagn_mac_stop,
1551#ifdef CONFIG_PM_SLEEP
1552 .suspend = iwlagn_mac_suspend,
1553 .resume = iwlagn_mac_resume,
1554#endif
1555 .add_interface = iwlagn_mac_add_interface,
1556 .remove_interface = iwlagn_mac_remove_interface,
1557 .change_interface = iwlagn_mac_change_interface,
1558 .config = iwlagn_mac_config,
1559 .configure_filter = iwlagn_configure_filter,
1560 .set_key = iwlagn_mac_set_key,
1561 .update_tkip_key = iwlagn_mac_update_tkip_key,
1562 .set_rekey_data = iwlagn_mac_set_rekey_data,
1563 .conf_tx = iwlagn_mac_conf_tx,
1564 .bss_info_changed = iwlagn_bss_info_changed,
1565 .ampdu_action = iwlagn_mac_ampdu_action,
1566 .hw_scan = iwlagn_mac_hw_scan,
1567 .sta_notify = iwlagn_mac_sta_notify,
1568 .sta_state = iwlagn_mac_sta_state,
1569 .channel_switch = iwlagn_mac_channel_switch,
1570 .flush = iwlagn_mac_flush,
1571 .tx_last_beacon = iwlagn_mac_tx_last_beacon,
1572 .remain_on_channel = iwlagn_mac_remain_on_channel,
1573 .cancel_remain_on_channel = iwlagn_mac_cancel_remain_on_channel,
1574 .rssi_callback = iwlagn_mac_rssi_callback,
1575 CFG80211_TESTMODE_CMD(iwlagn_mac_testmode_cmd)
1576 CFG80211_TESTMODE_DUMP(iwlagn_mac_testmode_dump)
1577 .set_tim = iwlagn_mac_set_tim,
1578};
1579
1580
1581struct ieee80211_hw *iwl_alloc_all(void)
1582{
1583 struct iwl_priv *priv;
1584 struct iwl_op_mode *op_mode;
1585
1586
1587 struct ieee80211_hw *hw;
1588
1589 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv) +
1590 sizeof(struct iwl_op_mode), &iwlagn_hw_ops);
1591 if (!hw)
1592 goto out;
1593
1594 op_mode = hw->priv;
1595 priv = IWL_OP_MODE_GET_DVM(op_mode);
1596 priv->hw = hw;
1597
1598out:
1599 return hw;
1600}
1601
