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iwlwifi: kill bus_get_hw_id
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-mac80211.c
CommitLineData
7335613a
WYG		 1/******************************************************************************
2 *
4e318262 3 * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
7335613a
WYG		 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/firmware.h>
39#include <linux/etherdevice.h>
40#include <linux/if_arp.h>
41
42#include <net/mac80211.h>
43
44#include <asm/div64.h>
45
46#include "iwl-eeprom.h"
69a679b0 47#include "iwl-wifi.h"
7335613a
WYG		 48#include "iwl-dev.h"
49#include "iwl-core.h"
50#include "iwl-io.h"
51#include "iwl-agn-calib.h"
52#include "iwl-agn.h"
53#include "iwl-shared.h"
54#include "iwl-bus.h"
55#include "iwl-trans.h"
56
57/*****************************************************************************
58 *
59 * mac80211 entry point functions
60 *
61 *****************************************************************************/
62
63static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
64 {
65 .max = 1,
66 .types = BIT(NL80211_IFTYPE_STATION),
67 },
68 {
69 .max = 1,
70 .types = BIT(NL80211_IFTYPE_AP),
71 },
72};
73
74static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
75 {
76 .max = 2,
77 .types = BIT(NL80211_IFTYPE_STATION),
78 },
79};
80
81static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
82 {
83 .max = 1,
84 .types = BIT(NL80211_IFTYPE_STATION),
85 },
86 {
87 .max = 1,
88 .types = BIT(NL80211_IFTYPE_P2P_GO) |
89 BIT(NL80211_IFTYPE_AP),
90 },
91};
92
93static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
94 {
95 .max = 2,
96 .types = BIT(NL80211_IFTYPE_STATION),
97 },
98 {
99 .max = 1,
100 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
101 },
102};
103
104static const struct ieee80211_iface_combination
105iwlagn_iface_combinations_dualmode[] = {
106 { .num_different_channels = 1,
107 .max_interfaces = 2,
108 .beacon_int_infra_match = true,
109 .limits = iwlagn_sta_ap_limits,
110 .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
111 },
112 { .num_different_channels = 1,
113 .max_interfaces = 2,
114 .limits = iwlagn_2sta_limits,
115 .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
116 },
117};
118
119static const struct ieee80211_iface_combination
120iwlagn_iface_combinations_p2p[] = {
121 { .num_different_channels = 1,
122 .max_interfaces = 2,
123 .beacon_int_infra_match = true,
124 .limits = iwlagn_p2p_sta_go_limits,
125 .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
126 },
127 { .num_different_channels = 1,
128 .max_interfaces = 2,
129 .limits = iwlagn_p2p_2sta_limits,
130 .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
131 },
132};
133
134/*
135 * Not a mac80211 entry point function, but it fits in with all the
136 * other mac80211 functions grouped here.
137 */
138int iwlagn_mac_setup_register(struct iwl_priv *priv,
139 struct iwlagn_ucode_capabilities *capa)
140{
141 int ret;
142 struct ieee80211_hw *hw = priv->hw;
143 struct iwl_rxon_context *ctx;
144
145 hw->rate_control_algorithm = "iwl-agn-rs";
146
147 /* Tell mac80211 our characteristics */
148 hw->flags = IEEE80211_HW_SIGNAL_DBM |
149 IEEE80211_HW_AMPDU_AGGREGATION |
150 IEEE80211_HW_NEED_DTIM_PERIOD |
151 IEEE80211_HW_SPECTRUM_MGMT |
152 IEEE80211_HW_REPORTS_TX_ACK_STATUS;
153
154 /*
155 * Including the following line will crash some AP's. This
156 * workaround removes the stimulus which causes the crash until
157 * the AP software can be fixed.
158 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
159 */
160
161 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
162 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
163
38622419 164 if (cfg(priv)->sku & EEPROM_SKU_CAP_11N_ENABLE)
7335613a
WYG		 165 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
166 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
167
168 if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
169 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
170
171 hw->sta_data_size = sizeof(struct iwl_station_priv);
172 hw->vif_data_size = sizeof(struct iwl_vif_priv);
173
174 for_each_context(priv, ctx) {
175 hw->wiphy->interface_modes |= ctx->interface_modes;
176 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
177 }
178
179 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
180
181 if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
182 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
183 hw->wiphy->n_iface_combinations =
184 ARRAY_SIZE(iwlagn_iface_combinations_p2p);
185 } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
186 hw->wiphy->iface_combinations =
187 iwlagn_iface_combinations_dualmode;
188 hw->wiphy->n_iface_combinations =
189 ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
190 }
191
192 hw->wiphy->max_remain_on_channel_duration = 1000;
193
194 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
195 WIPHY_FLAG_DISABLE_BEACON_HINTS |
196 WIPHY_FLAG_IBSS_RSN;
197
198 if (trans(priv)->ucode_wowlan.code.len &&
1042db2a 199 device_can_wakeup(trans(priv)->dev)) {
7335613a
WYG		 200 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
201 WIPHY_WOWLAN_DISCONNECT |
202 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
203 WIPHY_WOWLAN_RFKILL_RELEASE;
204 if (!iwlagn_mod_params.sw_crypto)
205 hw->wiphy->wowlan.flags |=
206 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
207 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
208
209 hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
210 hw->wiphy->wowlan.pattern_min_len =
211 IWLAGN_WOWLAN_MIN_PATTERN_LEN;
212 hw->wiphy->wowlan.pattern_max_len =
213 IWLAGN_WOWLAN_MAX_PATTERN_LEN;
214 }
215
216 if (iwlagn_mod_params.power_save)
217 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
218 else
219 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
220
221 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
222 /* we create the 802.11 header and a zero-length SSID element */
223 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
224
225 /* Default value; 4 EDCA QOS priorities */
226 hw->queues = 4;
227
228 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
229
230 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
231 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
232 &priv->bands[IEEE80211_BAND_2GHZ];
233 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
234 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
235 &priv->bands[IEEE80211_BAND_5GHZ];
236
99673ee5 237 hw->wiphy->hw_version = trans(priv)->hw_id;
0ba958eb 238
7335613a
WYG		 239 iwl_leds_init(priv);
240
241 ret = ieee80211_register_hw(priv->hw);
242 if (ret) {
243 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
244 return ret;
245 }
246 priv->mac80211_registered = 1;
247
248 return 0;
249}
250
09af1403
DF		 251void iwlagn_mac_unregister(struct iwl_priv *priv)
252{
253 if (!priv->mac80211_registered)
254 return;
255 iwl_leds_exit(priv);
256 ieee80211_unregister_hw(priv->hw);
257 priv->mac80211_registered = 0;
258}
259
7335613a
WYG		 260static int __iwl_up(struct iwl_priv *priv)
261{
262 struct iwl_rxon_context *ctx;
263 int ret;
264
265 lockdep_assert_held(&priv->shrd->mutex);
266
267 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
268 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
269 return -EIO;
270 }
271
272 for_each_context(priv, ctx) {
273 ret = iwlagn_alloc_bcast_station(priv, ctx);
274 if (ret) {
275 iwl_dealloc_bcast_stations(priv);
276 return ret;
277 }
278 }
279
69a679b0 280 ret = iwl_run_init_ucode(trans(priv));
7335613a
WYG		 281 if (ret) {
282 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
283 goto error;
284 }
285
69a679b0 286 ret = iwl_load_ucode_wait_alive(trans(priv), IWL_UCODE_REGULAR);
7335613a
WYG		 287 if (ret) {
288 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
289 goto error;
290 }
291
292 ret = iwl_alive_start(priv);
293 if (ret)
294 goto error;
295 return 0;
296
297 error:
298 set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
299 __iwl_down(priv);
300 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
301
302 IWL_ERR(priv, "Unable to initialize device.\n");
303 return ret;
304}
305
306static int iwlagn_mac_start(struct ieee80211_hw *hw)
307{
308 struct iwl_priv *priv = hw->priv;
309 int ret;
310
311 IWL_DEBUG_MAC80211(priv, "enter\n");
312
313 /* we should be verifying the device is ready to be opened */
314 mutex_lock(&priv->shrd->mutex);
315 ret = __iwl_up(priv);
316 mutex_unlock(&priv->shrd->mutex);
317 if (ret)
318 return ret;
319
320 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
321
322 /* Now we should be done, and the READY bit should be set. */
323 if (WARN_ON(!test_bit(STATUS_READY, &priv->shrd->status)))
324 ret = -EIO;
325
326 iwlagn_led_enable(priv);
327
328 priv->is_open = 1;
329 IWL_DEBUG_MAC80211(priv, "leave\n");
330 return 0;
331}
332
333static void iwlagn_mac_stop(struct ieee80211_hw *hw)
334{
335 struct iwl_priv *priv = hw->priv;
336
337 IWL_DEBUG_MAC80211(priv, "enter\n");
338
339 if (!priv->is_open)
340 return;
341
342 priv->is_open = 0;
343
344 iwl_down(priv);
345
346 flush_workqueue(priv->shrd->workqueue);
347
348 /* User space software may expect getting rfkill changes
349 * even if interface is down */
1042db2a 350 iwl_write32(trans(priv), CSR_INT, 0xFFFFFFFF);
7335613a
WYG		 351 iwl_enable_rfkill_int(priv);
352
353 IWL_DEBUG_MAC80211(priv, "leave\n");
354}
355
356static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
357 struct ieee80211_vif *vif,
358 struct cfg80211_gtk_rekey_data *data)
359{
360 struct iwl_priv *priv = hw->priv;
361
362 if (iwlagn_mod_params.sw_crypto)
363 return;
364
365 IWL_DEBUG_MAC80211(priv, "enter\n");
366 mutex_lock(&priv->shrd->mutex);
367
368 if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
369 goto out;
370
371 memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
372 memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
373 priv->replay_ctr =
374 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
375 priv->have_rekey_data = true;
376
377 out:
378 mutex_unlock(&priv->shrd->mutex);
379 IWL_DEBUG_MAC80211(priv, "leave\n");
380}
381
382#ifdef CONFIG_PM_SLEEP
7335613a
WYG		 383
384static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
385 struct cfg80211_wowlan *wowlan)
386{
387 struct iwl_priv *priv = hw->priv;
7335613a 388 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
023ca58f 389 int ret;
7335613a
WYG		 390
391 if (WARN_ON(!wowlan))
392 return -EINVAL;
393
394 IWL_DEBUG_MAC80211(priv, "enter\n");
395 mutex_lock(&priv->shrd->mutex);
396
397 /* Don't attempt WoWLAN when not associated, tear down instead. */
398 if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
399 !iwl_is_associated_ctx(ctx)) {
400 ret = 1;
401 goto out;
402 }
403
023ca58f 404 ret = iwlagn_suspend(priv, hw, wowlan);
7335613a
WYG		 405 if (ret)
406 goto error;
407
1042db2a 408 device_set_wakeup_enable(trans(priv)->dev, true);
7335613a
WYG		 409
410 /* Now let the ucode operate on its own */
1042db2a 411 iwl_write32(trans(priv), CSR_UCODE_DRV_GP1_SET,
7335613a
WYG		 412 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
413
414 goto out;
415
416 error:
417 priv->shrd->wowlan = false;
418 iwlagn_prepare_restart(priv);
419 ieee80211_restart_hw(priv->hw);
420 out:
421 mutex_unlock(&priv->shrd->mutex);
7335613a
WYG		 422 IWL_DEBUG_MAC80211(priv, "leave\n");
423
424 return ret;
425}
426
427static int iwlagn_mac_resume(struct ieee80211_hw *hw)
428{
429 struct iwl_priv *priv = hw->priv;
430 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
431 struct ieee80211_vif *vif;
432 unsigned long flags;
433 u32 base, status = 0xffffffff;
434 int ret = -EIO;
435
436 IWL_DEBUG_MAC80211(priv, "enter\n");
437 mutex_lock(&priv->shrd->mutex);
438
1042db2a 439 iwl_write32(trans(priv), CSR_UCODE_DRV_GP1_CLR,
7335613a
WYG		 440 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
441
ae6130fc 442 base = priv->shrd->device_pointers.error_event_table;
7335613a 443 if (iwlagn_hw_valid_rtc_data_addr(base)) {
1042db2a
EG		 444 spin_lock_irqsave(&trans(priv)->reg_lock, flags);
445 ret = iwl_grab_nic_access_silent(trans(priv));
7335613a 446 if (ret == 0) {
1042db2a
EG		 447 iwl_write32(trans(priv), HBUS_TARG_MEM_RADDR, base);
448 status = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
449 iwl_release_nic_access(trans(priv));
7335613a 450 }
1042db2a 451 spin_unlock_irqrestore(&trans(priv)->reg_lock, flags);
7335613a
WYG		 452
453#ifdef CONFIG_IWLWIFI_DEBUGFS
454 if (ret == 0) {
455 struct iwl_trans *trans = trans(priv);
456 if (!priv->wowlan_sram)
457 priv->wowlan_sram =
458 kzalloc(trans->ucode_wowlan.data.len,
459 GFP_KERNEL);
460
461 if (priv->wowlan_sram)
462 _iwl_read_targ_mem_words(
1042db2a
EG		 463 trans(priv), 0x800000,
464 priv->wowlan_sram,
7335613a
WYG		 465 trans->ucode_wowlan.data.len / 4);
466 }
467#endif
468 }
469
470 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
471 vif = ctx->vif;
472
473 priv->shrd->wowlan = false;
474
1042db2a 475 device_set_wakeup_enable(trans(priv)->dev, false);
7335613a
WYG		 476
477 iwlagn_prepare_restart(priv);
478
479 memset((void *)&ctx->active, 0, sizeof(ctx->active));
480 iwl_connection_init_rx_config(priv, ctx);
481 iwlagn_set_rxon_chain(priv, ctx);
482
483 mutex_unlock(&priv->shrd->mutex);
484 IWL_DEBUG_MAC80211(priv, "leave\n");
485
486 ieee80211_resume_disconnect(vif);
487
488 return 1;
489}
490
491#endif
492
493static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
494{
495 struct iwl_priv *priv = hw->priv;
496
7335613a
WYG		 497 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
498 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
499
500 if (iwlagn_tx_skb(priv, skb))
501 dev_kfree_skb_any(skb);
7335613a
WYG		 502}
503
504static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
505 struct ieee80211_vif *vif,
506 struct ieee80211_key_conf *keyconf,
507 struct ieee80211_sta *sta,
508 u32 iv32, u16 *phase1key)
509{
510 struct iwl_priv *priv = hw->priv;
511
512 iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
513}
514
515static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
516 struct ieee80211_vif *vif,
517 struct ieee80211_sta *sta,
518 struct ieee80211_key_conf *key)
519{
520 struct iwl_priv *priv = hw->priv;
521 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
522 struct iwl_rxon_context *ctx = vif_priv->ctx;
523 int ret;
524 bool is_default_wep_key = false;
525
526 IWL_DEBUG_MAC80211(priv, "enter\n");
527
528 if (iwlagn_mod_params.sw_crypto) {
529 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
530 return -EOPNOTSUPP;
531 }
532
a7e12c8e
JB		 533 switch (key->cipher) {
534 case WLAN_CIPHER_SUITE_TKIP:
535 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
536 /* fall through */
537 case WLAN_CIPHER_SUITE_CCMP:
538 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
539 break;
540 default:
541 break;
542 }
543
7335613a
WYG		 544 /*
545 * We could program these keys into the hardware as well, but we
546 * don't expect much multicast traffic in IBSS and having keys
547 * for more stations is probably more useful.
548 *
549 * Mark key TX-only and return 0.
550 */
551 if (vif->type == NL80211_IFTYPE_ADHOC &&
552 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
553 key->hw_key_idx = WEP_INVALID_OFFSET;
554 return 0;
555 }
556
557 /* If they key was TX-only, accept deletion */
558 if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
559 return 0;
560
561 mutex_lock(&priv->shrd->mutex);
562 iwl_scan_cancel_timeout(priv, 100);
563
564 BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
565
566 /*
567 * If we are getting WEP group key and we didn't receive any key mapping
568 * so far, we are in legacy wep mode (group key only), otherwise we are
569 * in 1X mode.
570 * In legacy wep mode, we use another host command to the uCode.
571 */
572 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
573 key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
574 if (cmd == SET_KEY)
575 is_default_wep_key = !ctx->key_mapping_keys;
576 else
577 is_default_wep_key =
578 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
579 }
580
581
582 switch (cmd) {
583 case SET_KEY:
584 if (is_default_wep_key) {
585 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
586 break;
587 }
588 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
589 if (ret) {
590 /*
591 * can't add key for RX, but we don't need it
592 * in the device for TX so still return 0
593 */
594 ret = 0;
595 key->hw_key_idx = WEP_INVALID_OFFSET;
596 }
597
598 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
599 break;
600 case DISABLE_KEY:
601 if (is_default_wep_key)
602 ret = iwl_remove_default_wep_key(priv, ctx, key);
603 else
604 ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
605
606 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
607 break;
608 default:
609 ret = -EINVAL;
610 }
611
612 mutex_unlock(&priv->shrd->mutex);
613 IWL_DEBUG_MAC80211(priv, "leave\n");
614
615 return ret;
616}
617
618static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
619 struct ieee80211_vif *vif,
620 enum ieee80211_ampdu_mlme_action action,
621 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
622 u8 buf_size)
623{
624 struct iwl_priv *priv = hw->priv;
625 int ret = -EINVAL;
626 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
7335613a
WYG		 627
628 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
629 sta->addr, tid);
630
38622419 631 if (!(cfg(priv)->sku & EEPROM_SKU_CAP_11N_ENABLE))
7335613a
WYG		 632 return -EACCES;
633
634 IWL_DEBUG_MAC80211(priv, "enter\n");
635 mutex_lock(&priv->shrd->mutex);
636
637 switch (action) {
638 case IEEE80211_AMPDU_RX_START:
7428994d
JB		 639 if (iwlagn_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
640 break;
7335613a
WYG		 641 IWL_DEBUG_HT(priv, "start Rx\n");
642 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
643 break;
644 case IEEE80211_AMPDU_RX_STOP:
645 IWL_DEBUG_HT(priv, "stop Rx\n");
646 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
647 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
648 ret = 0;
649 break;
650 case IEEE80211_AMPDU_TX_START:
7428994d
JB		 651 if (iwlagn_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
652 break;
7335613a
WYG		 653 IWL_DEBUG_HT(priv, "start Tx\n");
654 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
655 break;
656 case IEEE80211_AMPDU_TX_STOP:
657 IWL_DEBUG_HT(priv, "stop Tx\n");
658 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
659 if ((ret == 0) && (priv->agg_tids_count > 0)) {
660 priv->agg_tids_count--;
661 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
662 priv->agg_tids_count);
663 }
664 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
665 ret = 0;
38622419
DF		 666 if (!priv->agg_tids_count && cfg(priv)->ht_params &&
667 cfg(priv)->ht_params->use_rts_for_aggregation) {
7335613a
WYG		 668 /*
669 * switch off RTS/CTS if it was previously enabled
670 */
671 sta_priv->lq_sta.lq.general_params.flags &=
672 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
673 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
674 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
675 }
676 break;
677 case IEEE80211_AMPDU_TX_OPERATIONAL:
822e8b2a 678 ret = iwlagn_tx_agg_oper(priv, vif, sta, tid, buf_size);
7335613a
WYG		 679 break;
680 }
681 mutex_unlock(&priv->shrd->mutex);
682 IWL_DEBUG_MAC80211(priv, "leave\n");
683 return ret;
684}
685
686static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
687 struct ieee80211_vif *vif,
688 struct ieee80211_sta *sta)
689{
690 struct iwl_priv *priv = hw->priv;
691 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
692 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
693 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
694 int ret = 0;
695 u8 sta_id;
696
697 IWL_DEBUG_MAC80211(priv, "received request to add station %pM\n",
698 sta->addr);
699 mutex_lock(&priv->shrd->mutex);
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 /* Should we return success if return code is EEXIST ? */
714 goto out;
715 }
716
717 sta_priv->sta_id = sta_id;
718
719 /* Initialize rate scaling */
720 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
721 sta->addr);
722 iwl_rs_rate_init(priv, sta, sta_id);
723 out:
724 mutex_unlock(&priv->shrd->mutex);
725 IWL_DEBUG_MAC80211(priv, "leave\n");
726
727 return ret;
728}
729
730static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
731 struct ieee80211_channel_switch *ch_switch)
732{
733 struct iwl_priv *priv = hw->priv;
734 const struct iwl_channel_info *ch_info;
735 struct ieee80211_conf *conf = &hw->conf;
736 struct ieee80211_channel *channel = ch_switch->channel;
737 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
738 /*
739 * MULTI-FIXME
740 * When we add support for multiple interfaces, we need to
741 * revisit this. The channel switch command in the device
742 * only affects the BSS context, but what does that really
743 * mean? And what if we get a CSA on the second interface?
744 * This needs a lot of work.
745 */
746 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
747 u16 ch;
748
749 IWL_DEBUG_MAC80211(priv, "enter\n");
750
751 mutex_lock(&priv->shrd->mutex);
752
753 if (iwl_is_rfkill(priv->shrd))
754 goto out;
755
756 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
757 test_bit(STATUS_SCANNING, &priv->shrd->status) ||
758 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status))
759 goto out;
760
761 if (!iwl_is_associated_ctx(ctx))
762 goto out;
763
38622419 764 if (!cfg(priv)->lib->set_channel_switch)
7335613a
WYG		 765 goto out;
766
767 ch = channel->hw_value;
768 if (le16_to_cpu(ctx->active.channel) == ch)
769 goto out;
770
771 ch_info = iwl_get_channel_info(priv, channel->band, ch);
772 if (!is_channel_valid(ch_info)) {
773 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
774 goto out;
775 }
776
777 spin_lock_irq(&priv->shrd->lock);
778
779 priv->current_ht_config.smps = conf->smps_mode;
780
781 /* Configure HT40 channels */
782 ctx->ht.enabled = conf_is_ht(conf);
137ce797
WYG		 783 if (ctx->ht.enabled)
784 iwlagn_config_ht40(conf, ctx);
785 else
7335613a
WYG		 786 ctx->ht.is_40mhz = false;
787
788 if ((le16_to_cpu(ctx->staging.channel) != ch))
789 ctx->staging.flags = 0;
790
791 iwl_set_rxon_channel(priv, channel, ctx);
792 iwl_set_rxon_ht(priv, ht_conf);
793 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
794
795 spin_unlock_irq(&priv->shrd->lock);
796
797 iwl_set_rate(priv);
798 /*
799 * at this point, staging_rxon has the
800 * configuration for channel switch
801 */
802 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status);
803 priv->switch_channel = cpu_to_le16(ch);
38622419 804 if (cfg(priv)->lib->set_channel_switch(priv, ch_switch)) {
7335613a
WYG		 805 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status);
806 priv->switch_channel = 0;
807 ieee80211_chswitch_done(ctx->vif, false);
808 }
809
810out:
811 mutex_unlock(&priv->shrd->mutex);
812 IWL_DEBUG_MAC80211(priv, "leave\n");
813}
814
815static void iwlagn_configure_filter(struct ieee80211_hw *hw,
816 unsigned int changed_flags,
817 unsigned int *total_flags,
818 u64 multicast)
819{
820 struct iwl_priv *priv = hw->priv;
821 __le32 filter_or = 0, filter_nand = 0;
822 struct iwl_rxon_context *ctx;
823
824#define CHK(test, flag) do { \
825 if (*total_flags & (test)) \
826 filter_or |= (flag); \
827 else \
828 filter_nand |= (flag); \
829 } while (0)
830
831 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
832 changed_flags, *total_flags);
833
834 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
835 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
836 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
837 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
838
839#undef CHK
840
841 mutex_lock(&priv->shrd->mutex);
842
843 for_each_context(priv, ctx) {
844 ctx->staging.filter_flags &= ~filter_nand;
845 ctx->staging.filter_flags |= filter_or;
846
847 /*
848 * Not committing directly because hardware can perform a scan,
849 * but we'll eventually commit the filter flags change anyway.
850 */
851 }
852
853 mutex_unlock(&priv->shrd->mutex);
854
855 /*
856 * Receiving all multicast frames is always enabled by the
857 * default flags setup in iwl_connection_init_rx_config()
858 * since we currently do not support programming multicast
859 * filters into the device.
860 */
861 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
862 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
863}
864
865static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
866{
867 struct iwl_priv *priv = hw->priv;
868
869 mutex_lock(&priv->shrd->mutex);
870 IWL_DEBUG_MAC80211(priv, "enter\n");
871
872 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
873 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
874 goto done;
875 }
876 if (iwl_is_rfkill(priv->shrd)) {
877 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
878 goto done;
879 }
880
881 /*
882 * mac80211 will not push any more frames for transmit
883 * until the flush is completed
884 */
885 if (drop) {
886 IWL_DEBUG_MAC80211(priv, "send flush command\n");
887 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
888 IWL_ERR(priv, "flush request fail\n");
889 goto done;
890 }
891 }
892 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
893 iwl_trans_wait_tx_queue_empty(trans(priv));
894done:
895 mutex_unlock(&priv->shrd->mutex);
896 IWL_DEBUG_MAC80211(priv, "leave\n");
897}
898
899static int iwlagn_mac_remain_on_channel(struct ieee80211_hw *hw,
900 struct ieee80211_channel *channel,
901 enum nl80211_channel_type channel_type,
902 int duration)
903{
904 struct iwl_priv *priv = hw->priv;
905 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
906 int err = 0;
907
908 if (!(priv->shrd->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
909 return -EOPNOTSUPP;
910
911 if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
912 return -EOPNOTSUPP;
913
914 IWL_DEBUG_MAC80211(priv, "enter\n");
915 mutex_lock(&priv->shrd->mutex);
916
917 if (test_bit(STATUS_SCAN_HW, &priv->shrd->status)) {
918 err = -EBUSY;
919 goto out;
920 }
921
922 priv->hw_roc_channel = channel;
923 priv->hw_roc_chantype = channel_type;
3ddf6bef
JB		 924 /* convert from ms to TU */
925 priv->hw_roc_duration = DIV_ROUND_UP(1000 * duration, 1024);
7335613a
WYG		 926 priv->hw_roc_start_notified = false;
927 cancel_delayed_work(&priv->hw_roc_disable_work);
928
929 if (!ctx->is_active) {
a69cd040
JB		 930 static const struct iwl_qos_info default_qos_data = {
931 .def_qos_parm = {
932 .ac[0] = {
933 .cw_min = cpu_to_le16(3),
934 .cw_max = cpu_to_le16(7),
935 .aifsn = 2,
936 .edca_txop = cpu_to_le16(1504),
937 },
938 .ac[1] = {
939 .cw_min = cpu_to_le16(7),
940 .cw_max = cpu_to_le16(15),
941 .aifsn = 2,
942 .edca_txop = cpu_to_le16(3008),
943 },
944 .ac[2] = {
945 .cw_min = cpu_to_le16(15),
946 .cw_max = cpu_to_le16(1023),
947 .aifsn = 3,
948 },
949 .ac[3] = {
950 .cw_min = cpu_to_le16(15),
951 .cw_max = cpu_to_le16(1023),
952 .aifsn = 7,
953 },
954 },
955 };
956
7335613a 957 ctx->is_active = true;
a69cd040 958 ctx->qos_data = default_qos_data;
7335613a
WYG		 959 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
960 memcpy(ctx->staging.node_addr,
961 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
962 ETH_ALEN);
963 memcpy(ctx->staging.bssid_addr,
964 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
965 ETH_ALEN);
966 err = iwlagn_commit_rxon(priv, ctx);
967 if (err)
968 goto out;
969 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
970 RXON_FILTER_PROMISC_MSK |
971 RXON_FILTER_CTL2HOST_MSK;
972
973 err = iwlagn_commit_rxon(priv, ctx);
974 if (err) {
975 iwlagn_disable_roc(priv);
976 goto out;
977 }
978 priv->hw_roc_setup = true;
979 }
980
981 err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
982 if (err)
983 iwlagn_disable_roc(priv);
984
985 out:
986 mutex_unlock(&priv->shrd->mutex);
987 IWL_DEBUG_MAC80211(priv, "leave\n");
988
989 return err;
990}
991
992static int iwlagn_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
993{
994 struct iwl_priv *priv = hw->priv;
995
996 if (!(priv->shrd->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
997 return -EOPNOTSUPP;
998
999 IWL_DEBUG_MAC80211(priv, "enter\n");
1000 mutex_lock(&priv->shrd->mutex);
1001 iwl_scan_cancel_timeout(priv, priv->hw_roc_duration);
1002 iwlagn_disable_roc(priv);
1003 mutex_unlock(&priv->shrd->mutex);
1004 IWL_DEBUG_MAC80211(priv, "leave\n");
1005
1006 return 0;
1007}
1008
1009static int iwlagn_mac_tx_sync(struct ieee80211_hw *hw,
1010 struct ieee80211_vif *vif,
1011 const u8 *bssid,
1012 enum ieee80211_tx_sync_type type)
1013{
1014 struct iwl_priv *priv = hw->priv;
1015 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1016 struct iwl_rxon_context *ctx = vif_priv->ctx;
1017 int ret;
1018 u8 sta_id;
1019
5d22df20
JL		 1020 if (ctx->ctxid != IWL_RXON_CTX_PAN)
1021 return 0;
1022
7335613a
WYG		 1023 IWL_DEBUG_MAC80211(priv, "enter\n");
1024 mutex_lock(&priv->shrd->mutex);
1025
1026 if (iwl_is_associated_ctx(ctx)) {
1027 ret = 0;
1028 goto out;
1029 }
1030
1031 if (ctx->preauth_bssid || test_bit(STATUS_SCAN_HW,
1032 &priv->shrd->status)) {
1033 ret = -EBUSY;
1034 goto out;
1035 }
1036
1037 ret = iwl_add_station_common(priv, ctx, bssid, true, NULL, &sta_id);
1038 if (ret)
1039 goto out;
1040
1041 if (WARN_ON(sta_id != ctx->ap_sta_id)) {
1042 ret = -EIO;
1043 goto out_remove_sta;
1044 }
1045
1046 memcpy(ctx->bssid, bssid, ETH_ALEN);
1047 ctx->preauth_bssid = true;
1048
1049 ret = iwlagn_commit_rxon(priv, ctx);
1050
1051 if (ret == 0)
1052 goto out;
1053
1054 out_remove_sta:
1055 iwl_remove_station(priv, sta_id, bssid);
1056 out:
1057 mutex_unlock(&priv->shrd->mutex);
1058 IWL_DEBUG_MAC80211(priv, "leave\n");
1059
1060 return ret;
1061}
1062
1063static void iwlagn_mac_finish_tx_sync(struct ieee80211_hw *hw,
1064 struct ieee80211_vif *vif,
1065 const u8 *bssid,
1066 enum ieee80211_tx_sync_type type)
1067{
1068 struct iwl_priv *priv = hw->priv;
1069 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1070 struct iwl_rxon_context *ctx = vif_priv->ctx;
1071
5d22df20
JL		 1072 if (ctx->ctxid != IWL_RXON_CTX_PAN)
1073 return;
1074
7335613a
WYG		 1075 IWL_DEBUG_MAC80211(priv, "enter\n");
1076 mutex_lock(&priv->shrd->mutex);
1077
1078 if (iwl_is_associated_ctx(ctx))
1079 goto out;
1080
1081 iwl_remove_station(priv, ctx->ap_sta_id, bssid);
1082 ctx->preauth_bssid = false;
1083 /* no need to commit */
1084 out:
1085 mutex_unlock(&priv->shrd->mutex);
1086 IWL_DEBUG_MAC80211(priv, "leave\n");
1087}
1088
1089static void iwlagn_mac_rssi_callback(struct ieee80211_hw *hw,
1090 enum ieee80211_rssi_event rssi_event)
1091{
1092 struct iwl_priv *priv = hw->priv;
1093
1094 IWL_DEBUG_MAC80211(priv, "enter\n");
1095 mutex_lock(&priv->shrd->mutex);
1096
38622419
DF		 1097 if (cfg(priv)->bt_params &&
1098 cfg(priv)->bt_params->advanced_bt_coexist) {
7335613a
WYG		 1099 if (rssi_event == RSSI_EVENT_LOW)
1100 priv->bt_enable_pspoll = true;
1101 else if (rssi_event == RSSI_EVENT_HIGH)
1102 priv->bt_enable_pspoll = false;
1103
1104 iwlagn_send_advance_bt_config(priv);
1105 } else {
1106 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
1107 "ignoring RSSI callback\n");
1108 }
1109
1110 mutex_unlock(&priv->shrd->mutex);
1111 IWL_DEBUG_MAC80211(priv, "leave\n");
1112}
1113
1114static int iwlagn_mac_set_tim(struct ieee80211_hw *hw,
1115 struct ieee80211_sta *sta, bool set)
1116{
1117 struct iwl_priv *priv = hw->priv;
1118
1119 queue_work(priv->shrd->workqueue, &priv->beacon_update);
1120
1121 return 0;
1122}
1123
0b7a4c78
WYG		 1124static int iwlagn_mac_conf_tx(struct ieee80211_hw *hw,
1125 struct ieee80211_vif *vif, u16 queue,
1126 const struct ieee80211_tx_queue_params *params)
1127{
1128 struct iwl_priv *priv = hw->priv;
1129 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1130 struct iwl_rxon_context *ctx = vif_priv->ctx;
1131 unsigned long flags;
1132 int q;
1133
1134 if (WARN_ON(!ctx))
1135 return -EINVAL;
1136
1137 IWL_DEBUG_MAC80211(priv, "enter\n");
1138
1139 if (!iwl_is_ready_rf(priv->shrd)) {
1140 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
1141 return -EIO;
1142 }
1143
1144 if (queue >= AC_NUM) {
1145 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
1146 return 0;
1147 }
1148
1149 q = AC_NUM - 1 - queue;
1150
1151 spin_lock_irqsave(&priv->shrd->lock, flags);
1152
1153 ctx->qos_data.def_qos_parm.ac[q].cw_min =
1154 cpu_to_le16(params->cw_min);
1155 ctx->qos_data.def_qos_parm.ac[q].cw_max =
1156 cpu_to_le16(params->cw_max);
1157 ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
1158 ctx->qos_data.def_qos_parm.ac[q].edca_txop =
1159 cpu_to_le16((params->txop * 32));
1160
1161 ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0;
1162
1163 spin_unlock_irqrestore(&priv->shrd->lock, flags);
1164
1165 IWL_DEBUG_MAC80211(priv, "leave\n");
1166 return 0;
1167}
1168
1169static int iwlagn_mac_tx_last_beacon(struct ieee80211_hw *hw)
1170{
1171 struct iwl_priv *priv = hw->priv;
1172
1173 return priv->ibss_manager == IWL_IBSS_MANAGER;
1174}
1175
1176static int iwl_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
1177{
1178 iwl_connection_init_rx_config(priv, ctx);
1179
1180 iwlagn_set_rxon_chain(priv, ctx);
1181
1182 return iwlagn_commit_rxon(priv, ctx);
1183}
1184
1185static int iwl_setup_interface(struct iwl_priv *priv,
1186 struct iwl_rxon_context *ctx)
1187{
1188 struct ieee80211_vif *vif = ctx->vif;
1189 int err;
1190
1191 lockdep_assert_held(&priv->shrd->mutex);
1192
1193 /*
1194 * This variable will be correct only when there's just
1195 * a single context, but all code using it is for hardware
1196 * that supports only one context.
1197 */
1198 priv->iw_mode = vif->type;
1199
1200 ctx->is_active = true;
1201
1202 err = iwl_set_mode(priv, ctx);
1203 if (err) {
1204 if (!ctx->always_active)
1205 ctx->is_active = false;
1206 return err;
1207 }
1208
38622419 1209 if (cfg(priv)->bt_params && cfg(priv)->bt_params->advanced_bt_coexist &&
0b7a4c78
WYG		 1210 vif->type == NL80211_IFTYPE_ADHOC) {
1211 /*
1212 * pretend to have high BT traffic as long as we
1213 * are operating in IBSS mode, as this will cause
1214 * the rate scaling etc. to behave as intended.
1215 */
1216 priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
1217 }
1218
1219 return 0;
1220}
1221
1222static int iwlagn_mac_add_interface(struct ieee80211_hw *hw,
1223 struct ieee80211_vif *vif)
1224{
1225 struct iwl_priv *priv = hw->priv;
1226 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1227 struct iwl_rxon_context *tmp, *ctx = NULL;
1228 int err;
1229 enum nl80211_iftype viftype = ieee80211_vif_type_p2p(vif);
1230
1231 IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n",
1232 viftype, vif->addr);
1233
1234 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1235
1236 mutex_lock(&priv->shrd->mutex);
1237
1238 iwlagn_disable_roc(priv);
1239
1240 if (!iwl_is_ready_rf(priv->shrd)) {
1241 IWL_WARN(priv, "Try to add interface when device not ready\n");
1242 err = -EINVAL;
1243 goto out;
1244 }
1245
1246 for_each_context(priv, tmp) {
1247 u32 possible_modes =
1248 tmp->interface_modes | tmp->exclusive_interface_modes;
1249
1250 if (tmp->vif) {
1251 /* check if this busy context is exclusive */
1252 if (tmp->exclusive_interface_modes &
1253 BIT(tmp->vif->type)) {
1254 err = -EINVAL;
1255 goto out;
1256 }
1257 continue;
1258 }
1259
1260 if (!(possible_modes & BIT(viftype)))
1261 continue;
1262
1263 /* have maybe usable context w/o interface */
1264 ctx = tmp;
1265 break;
1266 }
1267
1268 if (!ctx) {
1269 err = -EOPNOTSUPP;
1270 goto out;
1271 }
1272
1273 vif_priv->ctx = ctx;
1274 ctx->vif = vif;
1275
1276 err = iwl_setup_interface(priv, ctx);
1277 if (!err)
1278 goto out;
1279
1280 ctx->vif = NULL;
1281 priv->iw_mode = NL80211_IFTYPE_STATION;
1282 out:
1283 mutex_unlock(&priv->shrd->mutex);
1284
1285 IWL_DEBUG_MAC80211(priv, "leave\n");
1286 return err;
1287}
1288
1289static void iwl_teardown_interface(struct iwl_priv *priv,
1290 struct ieee80211_vif *vif,
1291 bool mode_change)
1292{
1293 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1294
1295 lockdep_assert_held(&priv->shrd->mutex);
1296
1297 if (priv->scan_vif == vif) {
1298 iwl_scan_cancel_timeout(priv, 200);
1299 iwl_force_scan_end(priv);
1300 }
1301
1302 if (!mode_change) {
1303 iwl_set_mode(priv, ctx);
1304 if (!ctx->always_active)
1305 ctx->is_active = false;
1306 }
1307
1308 /*
1309 * When removing the IBSS interface, overwrite the
1310 * BT traffic load with the stored one from the last
1311 * notification, if any. If this is a device that
1312 * doesn't implement this, this has no effect since
1313 * both values are the same and zero.
1314 */
1315 if (vif->type == NL80211_IFTYPE_ADHOC)
1316 priv->bt_traffic_load = priv->last_bt_traffic_load;
1317}
1318
1319static void iwlagn_mac_remove_interface(struct ieee80211_hw *hw,
1320 struct ieee80211_vif *vif)
1321{
1322 struct iwl_priv *priv = hw->priv;
1323 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1324
1325 IWL_DEBUG_MAC80211(priv, "enter\n");
1326
1327 mutex_lock(&priv->shrd->mutex);
1328
1329 if (WARN_ON(ctx->vif != vif)) {
1330 struct iwl_rxon_context *tmp;
1331 IWL_ERR(priv, "ctx->vif = %p, vif = %p\n", ctx->vif, vif);
1332 for_each_context(priv, tmp)
1333 IWL_ERR(priv, "\tID = %d:\tctx = %p\tctx->vif = %p\n",
1334 tmp->ctxid, tmp, tmp->vif);
1335 }
1336 ctx->vif = NULL;
1337
1338 iwl_teardown_interface(priv, vif, false);
1339
1340 mutex_unlock(&priv->shrd->mutex);
1341
1342 IWL_DEBUG_MAC80211(priv, "leave\n");
1343
1344}
1345
1346static int iwlagn_mac_change_interface(struct ieee80211_hw *hw,
1347 struct ieee80211_vif *vif,
1348 enum nl80211_iftype newtype, bool newp2p)
1349{
1350 struct iwl_priv *priv = hw->priv;
1351 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1352 struct iwl_rxon_context *bss_ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1353 struct iwl_rxon_context *tmp;
1354 enum nl80211_iftype newviftype = newtype;
1355 u32 interface_modes;
1356 int err;
1357
1358 IWL_DEBUG_MAC80211(priv, "enter\n");
1359
1360 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1361
1362 mutex_lock(&priv->shrd->mutex);
1363
1364 if (!ctx->vif || !iwl_is_ready_rf(priv->shrd)) {
1365 /*
1366 * Huh? But wait ... this can maybe happen when
1367 * we're in the middle of a firmware restart!
1368 */
1369 err = -EBUSY;
1370 goto out;
1371 }
1372
1373 interface_modes = ctx->interface_modes | ctx->exclusive_interface_modes;
1374
1375 if (!(interface_modes & BIT(newtype))) {
1376 err = -EBUSY;
1377 goto out;
1378 }
1379
1380 /*
1381 * Refuse a change that should be done by moving from the PAN
1382 * context to the BSS context instead, if the BSS context is
1383 * available and can support the new interface type.
1384 */
1385 if (ctx->ctxid == IWL_RXON_CTX_PAN && !bss_ctx->vif &&
1386 (bss_ctx->interface_modes & BIT(newtype) ||
1387 bss_ctx->exclusive_interface_modes & BIT(newtype))) {
1388 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
1389 err = -EBUSY;
1390 goto out;
1391 }
1392
1393 if (ctx->exclusive_interface_modes & BIT(newtype)) {
1394 for_each_context(priv, tmp) {
1395 if (ctx == tmp)
1396 continue;
1397
1398 if (!tmp->vif)
1399 continue;
1400
1401 /*
1402 * The current mode switch would be exclusive, but
1403 * another context is active ... refuse the switch.
1404 */
1405 err = -EBUSY;
1406 goto out;
1407 }
1408 }
1409
1410 /* success */
1411 iwl_teardown_interface(priv, vif, true);
1412 vif->type = newviftype;
1413 vif->p2p = newp2p;
1414 err = iwl_setup_interface(priv, ctx);
1415 WARN_ON(err);
1416 /*
1417 * We've switched internally, but submitting to the
1418 * device may have failed for some reason. Mask this
1419 * error, because otherwise mac80211 will not switch
1420 * (and set the interface type back) and we'll be
1421 * out of sync with it.
1422 */
1423 err = 0;
1424
1425 out:
1426 mutex_unlock(&priv->shrd->mutex);
1427 IWL_DEBUG_MAC80211(priv, "leave\n");
1428
1429 return err;
1430}
1431
ba4c5319
WYG		 1432static int iwlagn_mac_hw_scan(struct ieee80211_hw *hw,
1433 struct ieee80211_vif *vif,
1434 struct cfg80211_scan_request *req)
1435{
1436 struct iwl_priv *priv = hw->priv;
1437 int ret;
1438
1439 IWL_DEBUG_MAC80211(priv, "enter\n");
1440
1441 if (req->n_channels == 0)
1442 return -EINVAL;
1443
1444 mutex_lock(&priv->shrd->mutex);
1445
1446 /*
1447 * If an internal scan is in progress, just set
1448 * up the scan_request as per above.
1449 */
1450 if (priv->scan_type != IWL_SCAN_NORMAL) {
1451 IWL_DEBUG_SCAN(priv,
1452 "SCAN request during internal scan - defer\n");
1453 priv->scan_request = req;
1454 priv->scan_vif = vif;
1455 ret = 0;
1456 } else {
1457 priv->scan_request = req;
1458 priv->scan_vif = vif;
1459 /*
1460 * mac80211 will only ask for one band at a time
1461 * so using channels[0] here is ok
1462 */
1463 ret = iwl_scan_initiate(priv, vif, IWL_SCAN_NORMAL,
1464 req->channels[0]->band);
1465 if (ret) {
1466 priv->scan_request = NULL;
1467 priv->scan_vif = NULL;
1468 }
1469 }
1470
1471 IWL_DEBUG_MAC80211(priv, "leave\n");
1472
1473 mutex_unlock(&priv->shrd->mutex);
1474
1475 return ret;
1476}
1477
76b29331
WYG		 1478static int iwlagn_mac_sta_remove(struct ieee80211_hw *hw,
1479 struct ieee80211_vif *vif,
1480 struct ieee80211_sta *sta)
1481{
1482 struct iwl_priv *priv = hw->priv;
1483 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
1484 int ret;
1485
1486 IWL_DEBUG_MAC80211(priv, "enter: received request to remove "
1487 "station %pM\n", sta->addr);
1488 mutex_lock(&priv->shrd->mutex);
1489 IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n",
1490 sta->addr);
1491 ret = iwl_remove_station(priv, sta_priv->sta_id, sta->addr);
1492 if (ret)
1493 IWL_DEBUG_QUIET_RFKILL(priv, "Error removing station %pM\n",
1494 sta->addr);
1495 mutex_unlock(&priv->shrd->mutex);
1496 IWL_DEBUG_MAC80211(priv, "leave\n");
1497
1498 return ret;
1499}
1500
1501static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1502{
1503 unsigned long flags;
1504
1505 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
1506 priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK;
1507 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1508 priv->stations[sta_id].sta.sta.modify_mask = 0;
1509 priv->stations[sta_id].sta.sleep_tx_count = 0;
1510 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1511 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1512 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
1513
1514}
1515
1516static void iwlagn_mac_sta_notify(struct ieee80211_hw *hw,
1517 struct ieee80211_vif *vif,
1518 enum sta_notify_cmd cmd,
1519 struct ieee80211_sta *sta)
1520{
1521 struct iwl_priv *priv = hw->priv;
1522 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
1523 int sta_id;
1524
1525 IWL_DEBUG_MAC80211(priv, "enter\n");
1526
1527 switch (cmd) {
1528 case STA_NOTIFY_SLEEP:
1529 WARN_ON(!sta_priv->client);
1530 sta_priv->asleep = true;
1531 if (atomic_read(&sta_priv->pending_frames) > 0)
1532 ieee80211_sta_block_awake(hw, sta, true);
1533 break;
1534 case STA_NOTIFY_AWAKE:
1535 WARN_ON(!sta_priv->client);
1536 if (!sta_priv->asleep)
1537 break;
1538 sta_priv->asleep = false;
1539 sta_id = iwl_sta_id(sta);
1540 if (sta_id != IWL_INVALID_STATION)
1541 iwl_sta_modify_ps_wake(priv, sta_id);
1542 break;
1543 default:
1544 break;
1545 }
1546 IWL_DEBUG_MAC80211(priv, "leave\n");
1547}
1548
7335613a
WYG		 1549struct ieee80211_ops iwlagn_hw_ops = {
1550 .tx = iwlagn_mac_tx,
1551 .start = iwlagn_mac_start,
1552 .stop = iwlagn_mac_stop,
1553#ifdef CONFIG_PM_SLEEP
1554 .suspend = iwlagn_mac_suspend,
1555 .resume = iwlagn_mac_resume,
1556#endif
1557 .add_interface = iwlagn_mac_add_interface,
1558 .remove_interface = iwlagn_mac_remove_interface,
1559 .change_interface = iwlagn_mac_change_interface,
1560 .config = iwlagn_mac_config,
1561 .configure_filter = iwlagn_configure_filter,
1562 .set_key = iwlagn_mac_set_key,
1563 .update_tkip_key = iwlagn_mac_update_tkip_key,
1564 .set_rekey_data = iwlagn_mac_set_rekey_data,
1565 .conf_tx = iwlagn_mac_conf_tx,
1566 .bss_info_changed = iwlagn_bss_info_changed,
1567 .ampdu_action = iwlagn_mac_ampdu_action,
1568 .hw_scan = iwlagn_mac_hw_scan,
1569 .sta_notify = iwlagn_mac_sta_notify,
1570 .sta_add = iwlagn_mac_sta_add,
1571 .sta_remove = iwlagn_mac_sta_remove,
1572 .channel_switch = iwlagn_mac_channel_switch,
1573 .flush = iwlagn_mac_flush,
1574 .tx_last_beacon = iwlagn_mac_tx_last_beacon,
1575 .remain_on_channel = iwlagn_mac_remain_on_channel,
1576 .cancel_remain_on_channel = iwlagn_mac_cancel_remain_on_channel,
1577 .rssi_callback = iwlagn_mac_rssi_callback,
1578 CFG80211_TESTMODE_CMD(iwlagn_mac_testmode_cmd)
1579 CFG80211_TESTMODE_DUMP(iwlagn_mac_testmode_dump)
1580 .tx_sync = iwlagn_mac_tx_sync,
1581 .finish_tx_sync = iwlagn_mac_finish_tx_sync,
1582 .set_tim = iwlagn_mac_set_tim,
1583};
1584
1585/* This function both allocates and initializes hw and priv. */
1586struct ieee80211_hw *iwl_alloc_all(void)
1587{
1588 struct iwl_priv *priv;
1589 /* mac80211 allocates memory for this device instance, including
1590 * space for this driver's private structure */
1591 struct ieee80211_hw *hw;
1592
1593 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwlagn_hw_ops);
1594 if (!hw)
1595 goto out;
1596
1597 priv = hw->priv;
1598 priv->hw = hw;
1599
1600out:
1601 return hw;
1602}
Linux kernel - Deliverables
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