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iwlwifi: use watchdog timeout from hw_params
[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>
7335613a
WYG		 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"
7335613a 52#include "iwl-trans.h"
d0f76d68 53#include "iwl-op-mode.h"
7335613a
WYG		 54
55/*****************************************************************************
56 *
57 * mac80211 entry point functions
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 * Not a mac80211 entry point function, but it fits in with all the
134 * other mac80211 functions grouped here.
135 */
136int iwlagn_mac_setup_register(struct iwl_priv *priv,
0692fe41 137 const struct iwl_ucode_capabilities *capa)
7335613a
WYG		 138{
139 int ret;
140 struct ieee80211_hw *hw = priv->hw;
141 struct iwl_rxon_context *ctx;
142
143 hw->rate_control_algorithm = "iwl-agn-rs";
144
145 /* Tell mac80211 our characteristics */
146 hw->flags = IEEE80211_HW_SIGNAL_DBM |
147 IEEE80211_HW_AMPDU_AGGREGATION |
148 IEEE80211_HW_NEED_DTIM_PERIOD |
149 IEEE80211_HW_SPECTRUM_MGMT |
150 IEEE80211_HW_REPORTS_TX_ACK_STATUS;
151
152 /*
153 * Including the following line will crash some AP's. This
154 * workaround removes the stimulus which causes the crash until
155 * the AP software can be fixed.
156 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
157 */
158
159 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
160 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
161
54708d8d 162 if (hw_params(priv).sku & EEPROM_SKU_CAP_11N_ENABLE)
7335613a
WYG		 163 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
164 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
165
166 if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
167 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
168
169 hw->sta_data_size = sizeof(struct iwl_station_priv);
170 hw->vif_data_size = sizeof(struct iwl_vif_priv);
171
172 for_each_context(priv, ctx) {
173 hw->wiphy->interface_modes |= ctx->interface_modes;
174 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
175 }
176
177 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
178
179 if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
180 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
181 hw->wiphy->n_iface_combinations =
182 ARRAY_SIZE(iwlagn_iface_combinations_p2p);
183 } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
184 hw->wiphy->iface_combinations =
185 iwlagn_iface_combinations_dualmode;
186 hw->wiphy->n_iface_combinations =
187 ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
188 }
189
190 hw->wiphy->max_remain_on_channel_duration = 1000;
191
192 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
193 WIPHY_FLAG_DISABLE_BEACON_HINTS |
194 WIPHY_FLAG_IBSS_RSN;
195
0692fe41 196 if (priv->fw->ucode_wowlan.code.len &&
2dd4f9f7 197 trans(priv)->ops->wowlan_suspend &&
1042db2a 198 device_can_wakeup(trans(priv)->dev)) {
7335613a
WYG		 199 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
200 WIPHY_WOWLAN_DISCONNECT |
201 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
202 WIPHY_WOWLAN_RFKILL_RELEASE;
203 if (!iwlagn_mod_params.sw_crypto)
204 hw->wiphy->wowlan.flags |=
205 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
206 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
207
208 hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
209 hw->wiphy->wowlan.pattern_min_len =
210 IWLAGN_WOWLAN_MIN_PATTERN_LEN;
211 hw->wiphy->wowlan.pattern_max_len =
212 IWLAGN_WOWLAN_MAX_PATTERN_LEN;
213 }
214
215 if (iwlagn_mod_params.power_save)
216 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
217 else
218 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
219
220 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
221 /* we create the 802.11 header and a zero-length SSID element */
222 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
223
224 /* Default value; 4 EDCA QOS priorities */
225 hw->queues = 4;
226
227 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
228
229 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
230 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
231 &priv->bands[IEEE80211_BAND_2GHZ];
232 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
233 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
234 &priv->bands[IEEE80211_BAND_5GHZ];
235
99673ee5 236 hw->wiphy->hw_version = trans(priv)->hw_id;
0ba958eb 237
7335613a
WYG		 238 iwl_leds_init(priv);
239
240 ret = ieee80211_register_hw(priv->hw);
241 if (ret) {
242 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
243 return ret;
244 }
245 priv->mac80211_registered = 1;
246
247 return 0;
248}
249
09af1403
DF		 250void iwlagn_mac_unregister(struct iwl_priv *priv)
251{
252 if (!priv->mac80211_registered)
253 return;
254 iwl_leds_exit(priv);
255 ieee80211_unregister_hw(priv->hw);
256 priv->mac80211_registered = 0;
257}
258
7335613a
WYG		 259static int __iwl_up(struct iwl_priv *priv)
260{
261 struct iwl_rxon_context *ctx;
262 int ret;
263
b1eea297 264 lockdep_assert_held(&priv->mutex);
7335613a
WYG		 265
266 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
267 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
268 return -EIO;
269 }
270
271 for_each_context(priv, ctx) {
272 ret = iwlagn_alloc_bcast_station(priv, ctx);
273 if (ret) {
274 iwl_dealloc_bcast_stations(priv);
275 return ret;
276 }
277 }
278
e1991885 279 ret = iwl_run_init_ucode(priv);
7335613a
WYG		 280 if (ret) {
281 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
282 goto error;
283 }
284
e1991885 285 ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_REGULAR);
7335613a
WYG		 286 if (ret) {
287 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
288 goto error;
289 }
290
291 ret = iwl_alive_start(priv);
292 if (ret)
293 goto error;
294 return 0;
295
296 error:
297 set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
78e5a464 298 iwl_down(priv);
7335613a
WYG		 299 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
300
301 IWL_ERR(priv, "Unable to initialize device.\n");
302 return ret;
303}
304
305static int iwlagn_mac_start(struct ieee80211_hw *hw)
306{
d0f76d68 307 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 308 int ret;
309
310 IWL_DEBUG_MAC80211(priv, "enter\n");
311
312 /* we should be verifying the device is ready to be opened */
b1eea297 313 mutex_lock(&priv->mutex);
7335613a 314 ret = __iwl_up(priv);
b1eea297 315 mutex_unlock(&priv->mutex);
7335613a
WYG		 316 if (ret)
317 return ret;
318
319 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
320
321 /* Now we should be done, and the READY bit should be set. */
322 if (WARN_ON(!test_bit(STATUS_READY, &priv->shrd->status)))
323 ret = -EIO;
324
325 iwlagn_led_enable(priv);
326
327 priv->is_open = 1;
328 IWL_DEBUG_MAC80211(priv, "leave\n");
329 return 0;
330}
331
332static void iwlagn_mac_stop(struct ieee80211_hw *hw)
333{
d0f76d68 334 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 335
336 IWL_DEBUG_MAC80211(priv, "enter\n");
337
338 if (!priv->is_open)
339 return;
340
341 priv->is_open = 0;
342
b1eea297 343 mutex_lock(&priv->mutex);
7335613a 344 iwl_down(priv);
b1eea297 345 mutex_unlock(&priv->mutex);
78e5a464
EG		 346
347 iwl_cancel_deferred_work(priv);
7335613a 348
1ee158d8 349 flush_workqueue(priv->workqueue);
7335613a
WYG		 350
351 /* User space software may expect getting rfkill changes
1df06bdc
EG		 352 * even if interface is down, trans->down will leave the RF
353 * kill interrupt enabled
354 */
355 iwl_trans_stop_hw(trans(priv));
7335613a
WYG		 356
357 IWL_DEBUG_MAC80211(priv, "leave\n");
358}
359
360static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
361 struct ieee80211_vif *vif,
362 struct cfg80211_gtk_rekey_data *data)
363{
d0f76d68 364 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 365
366 if (iwlagn_mod_params.sw_crypto)
367 return;
368
369 IWL_DEBUG_MAC80211(priv, "enter\n");
b1eea297 370 mutex_lock(&priv->mutex);
7335613a
WYG		 371
372 if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
373 goto out;
374
375 memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
376 memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
377 priv->replay_ctr =
378 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
379 priv->have_rekey_data = true;
380
381 out:
b1eea297 382 mutex_unlock(&priv->mutex);
7335613a
WYG		 383 IWL_DEBUG_MAC80211(priv, "leave\n");
384}
385
386#ifdef CONFIG_PM_SLEEP
7335613a
WYG		 387
388static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
389 struct cfg80211_wowlan *wowlan)
390{
d0f76d68 391 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a 392 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
023ca58f 393 int ret;
7335613a
WYG		 394
395 if (WARN_ON(!wowlan))
396 return -EINVAL;
397
398 IWL_DEBUG_MAC80211(priv, "enter\n");
b1eea297 399 mutex_lock(&priv->mutex);
7335613a
WYG		 400
401 /* Don't attempt WoWLAN when not associated, tear down instead. */
402 if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
403 !iwl_is_associated_ctx(ctx)) {
404 ret = 1;
405 goto out;
406 }
407
023ca58f 408 ret = iwlagn_suspend(priv, hw, wowlan);
7335613a
WYG		 409 if (ret)
410 goto error;
411
1042db2a 412 device_set_wakeup_enable(trans(priv)->dev, true);
7335613a 413
2dd4f9f7 414 iwl_trans_wowlan_suspend(trans(priv));
7335613a
WYG		 415
416 goto out;
417
418 error:
15b86bff 419 priv->wowlan = false;
7335613a
WYG		 420 iwlagn_prepare_restart(priv);
421 ieee80211_restart_hw(priv->hw);
422 out:
b1eea297 423 mutex_unlock(&priv->mutex);
7335613a
WYG		 424 IWL_DEBUG_MAC80211(priv, "leave\n");
425
426 return ret;
427}
428
429static int iwlagn_mac_resume(struct ieee80211_hw *hw)
430{
d0f76d68 431 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 432 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
433 struct ieee80211_vif *vif;
434 unsigned long flags;
435 u32 base, status = 0xffffffff;
436 int ret = -EIO;
437
438 IWL_DEBUG_MAC80211(priv, "enter\n");
b1eea297 439 mutex_lock(&priv->mutex);
7335613a 440
1042db2a 441 iwl_write32(trans(priv), CSR_UCODE_DRV_GP1_CLR,
7335613a
WYG		 442 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
443
ae6130fc 444 base = priv->shrd->device_pointers.error_event_table;
7335613a 445 if (iwlagn_hw_valid_rtc_data_addr(base)) {
1042db2a
EG		 446 spin_lock_irqsave(&trans(priv)->reg_lock, flags);
447 ret = iwl_grab_nic_access_silent(trans(priv));
7335613a 448 if (ret == 0) {
1042db2a
EG		 449 iwl_write32(trans(priv), HBUS_TARG_MEM_RADDR, base);
450 status = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
451 iwl_release_nic_access(trans(priv));
7335613a 452 }
1042db2a 453 spin_unlock_irqrestore(&trans(priv)->reg_lock, flags);
7335613a
WYG		 454
455#ifdef CONFIG_IWLWIFI_DEBUGFS
456 if (ret == 0) {
7335613a
WYG		 457 if (!priv->wowlan_sram)
458 priv->wowlan_sram =
0692fe41 459 kzalloc(priv->fw->ucode_wowlan.data.len,
7335613a
WYG		 460 GFP_KERNEL);
461
462 if (priv->wowlan_sram)
463 _iwl_read_targ_mem_words(
1042db2a
EG		 464 trans(priv), 0x800000,
465 priv->wowlan_sram,
0692fe41 466 priv->fw->ucode_wowlan.data.len / 4);
7335613a
WYG		 467 }
468#endif
469 }
470
471 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
472 vif = ctx->vif;
473
15b86bff 474 priv->wowlan = false;
7335613a 475
1042db2a 476 device_set_wakeup_enable(trans(priv)->dev, false);
7335613a
WYG		 477
478 iwlagn_prepare_restart(priv);
479
480 memset((void *)&ctx->active, 0, sizeof(ctx->active));
481 iwl_connection_init_rx_config(priv, ctx);
482 iwlagn_set_rxon_chain(priv, ctx);
483
b1eea297 484 mutex_unlock(&priv->mutex);
7335613a
WYG		 485 IWL_DEBUG_MAC80211(priv, "leave\n");
486
487 ieee80211_resume_disconnect(vif);
488
489 return 1;
490}
491
492#endif
493
494static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
495{
d0f76d68 496 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a 497
7335613a
WYG		 498 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
499 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
500
501 if (iwlagn_tx_skb(priv, skb))
502 dev_kfree_skb_any(skb);
7335613a
WYG		 503}
504
505static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
506 struct ieee80211_vif *vif,
507 struct ieee80211_key_conf *keyconf,
508 struct ieee80211_sta *sta,
509 u32 iv32, u16 *phase1key)
510{
d0f76d68 511 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 512
513 iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
514}
515
516static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
517 struct ieee80211_vif *vif,
518 struct ieee80211_sta *sta,
519 struct ieee80211_key_conf *key)
520{
d0f76d68 521 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 522 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
523 struct iwl_rxon_context *ctx = vif_priv->ctx;
524 int ret;
525 bool is_default_wep_key = false;
526
527 IWL_DEBUG_MAC80211(priv, "enter\n");
528
529 if (iwlagn_mod_params.sw_crypto) {
530 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
531 return -EOPNOTSUPP;
532 }
533
a7e12c8e
JB		 534 switch (key->cipher) {
535 case WLAN_CIPHER_SUITE_TKIP:
536 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
537 /* fall through */
538 case WLAN_CIPHER_SUITE_CCMP:
539 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
540 break;
541 default:
542 break;
543 }
544
7335613a
WYG		 545 /*
546 * We could program these keys into the hardware as well, but we
547 * don't expect much multicast traffic in IBSS and having keys
548 * for more stations is probably more useful.
549 *
550 * Mark key TX-only and return 0.
551 */
552 if (vif->type == NL80211_IFTYPE_ADHOC &&
553 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
554 key->hw_key_idx = WEP_INVALID_OFFSET;
555 return 0;
556 }
557
558 /* If they key was TX-only, accept deletion */
559 if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
560 return 0;
561
b1eea297 562 mutex_lock(&priv->mutex);
7335613a
WYG		 563 iwl_scan_cancel_timeout(priv, 100);
564
565 BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
566
567 /*
568 * If we are getting WEP group key and we didn't receive any key mapping
569 * so far, we are in legacy wep mode (group key only), otherwise we are
570 * in 1X mode.
571 * In legacy wep mode, we use another host command to the uCode.
572 */
573 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
574 key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
575 if (cmd == SET_KEY)
576 is_default_wep_key = !ctx->key_mapping_keys;
577 else
578 is_default_wep_key =
579 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
580 }
581
582
583 switch (cmd) {
584 case SET_KEY:
585 if (is_default_wep_key) {
586 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
587 break;
588 }
589 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
590 if (ret) {
591 /*
592 * can't add key for RX, but we don't need it
593 * in the device for TX so still return 0
594 */
595 ret = 0;
596 key->hw_key_idx = WEP_INVALID_OFFSET;
597 }
598
599 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
600 break;
601 case DISABLE_KEY:
602 if (is_default_wep_key)
603 ret = iwl_remove_default_wep_key(priv, ctx, key);
604 else
605 ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
606
607 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
608 break;
609 default:
610 ret = -EINVAL;
611 }
612
b1eea297 613 mutex_unlock(&priv->mutex);
7335613a
WYG		 614 IWL_DEBUG_MAC80211(priv, "leave\n");
615
616 return ret;
617}
618
619static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
620 struct ieee80211_vif *vif,
621 enum ieee80211_ampdu_mlme_action action,
622 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
623 u8 buf_size)
624{
d0f76d68 625 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 626 int ret = -EINVAL;
627 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
7335613a
WYG		 628
629 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
630 sta->addr, tid);
631
54708d8d 632 if (!(hw_params(priv).sku & EEPROM_SKU_CAP_11N_ENABLE))
7335613a
WYG		 633 return -EACCES;
634
635 IWL_DEBUG_MAC80211(priv, "enter\n");
b1eea297 636 mutex_lock(&priv->mutex);
7335613a
WYG		 637
638 switch (action) {
639 case IEEE80211_AMPDU_RX_START:
7428994d
JB		 640 if (iwlagn_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
641 break;
7335613a
WYG		 642 IWL_DEBUG_HT(priv, "start Rx\n");
643 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
644 break;
645 case IEEE80211_AMPDU_RX_STOP:
646 IWL_DEBUG_HT(priv, "stop Rx\n");
647 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
7335613a
WYG		 648 break;
649 case IEEE80211_AMPDU_TX_START:
7428994d
JB		 650 if (iwlagn_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
651 break;
7335613a
WYG		 652 IWL_DEBUG_HT(priv, "start Tx\n");
653 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
654 break;
655 case IEEE80211_AMPDU_TX_STOP:
656 IWL_DEBUG_HT(priv, "stop Tx\n");
657 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
658 if ((ret == 0) && (priv->agg_tids_count > 0)) {
659 priv->agg_tids_count--;
660 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
661 priv->agg_tids_count);
662 }
38622419
DF		 663 if (!priv->agg_tids_count && cfg(priv)->ht_params &&
664 cfg(priv)->ht_params->use_rts_for_aggregation) {
7335613a
WYG		 665 /*
666 * switch off RTS/CTS if it was previously enabled
667 */
668 sta_priv->lq_sta.lq.general_params.flags &=
669 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
670 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
671 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
672 }
673 break;
674 case IEEE80211_AMPDU_TX_OPERATIONAL:
822e8b2a 675 ret = iwlagn_tx_agg_oper(priv, vif, sta, tid, buf_size);
7335613a
WYG		 676 break;
677 }
b1eea297 678 mutex_unlock(&priv->mutex);
7335613a
WYG		 679 IWL_DEBUG_MAC80211(priv, "leave\n");
680 return ret;
681}
682
683static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
684 struct ieee80211_vif *vif,
685 struct ieee80211_sta *sta)
686{
d0f76d68 687 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 688 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
689 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
690 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
fb5fe5b9 691 int ret;
7335613a
WYG		 692 u8 sta_id;
693
7335613a
WYG		 694 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
695 sta->addr);
696 sta_priv->sta_id = IWL_INVALID_STATION;
697
698 atomic_set(&sta_priv->pending_frames, 0);
699 if (vif->type == NL80211_IFTYPE_AP)
700 sta_priv->client = true;
701
702 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
703 is_ap, sta, &sta_id);
704 if (ret) {
705 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
706 sta->addr, ret);
707 /* Should we return success if return code is EEXIST ? */
fb5fe5b9 708 return ret;
7335613a
WYG		 709 }
710
711 sta_priv->sta_id = sta_id;
712
fb5fe5b9
JB		 713 return 0;
714}
715
716static int iwlagn_mac_sta_remove(struct ieee80211_hw *hw,
717 struct ieee80211_vif *vif,
718 struct ieee80211_sta *sta)
719{
720 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
721 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
722 int ret;
723
724 IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n",
725 sta->addr);
726 ret = iwl_remove_station(priv, sta_priv->sta_id, sta->addr);
727 if (ret)
728 IWL_DEBUG_QUIET_RFKILL(priv, "Error removing station %pM\n",
729 sta->addr);
730 return ret;
731}
732
733static int iwlagn_mac_sta_state(struct ieee80211_hw *hw,
734 struct ieee80211_vif *vif,
735 struct ieee80211_sta *sta,
736 enum ieee80211_sta_state old_state,
737 enum ieee80211_sta_state new_state)
738{
739 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
ab0bd5b3 740 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
fb5fe5b9 741 enum {
ab0bd5b3 742 NONE, ADD, REMOVE, HT_RATE_INIT, ADD_RATE_INIT,
fb5fe5b9
JB		 743 } op = NONE;
744 int ret;
745
746 IWL_DEBUG_MAC80211(priv, "station %pM state change %d->%d\n",
747 sta->addr, old_state, new_state);
748
b1eea297 749 mutex_lock(&priv->mutex);
fb5fe5b9
JB		 750 if (vif->type == NL80211_IFTYPE_STATION) {
751 if (old_state == IEEE80211_STA_NOTEXIST &&
752 new_state == IEEE80211_STA_NONE)
753 op = ADD;
754 else if (old_state == IEEE80211_STA_NONE &&
755 new_state == IEEE80211_STA_NOTEXIST)
756 op = REMOVE;
757 else if (old_state == IEEE80211_STA_AUTH &&
758 new_state == IEEE80211_STA_ASSOC)
ab0bd5b3 759 op = HT_RATE_INIT;
fb5fe5b9
JB		 760 } else {
761 if (old_state == IEEE80211_STA_AUTH &&
762 new_state == IEEE80211_STA_ASSOC)
763 op = ADD_RATE_INIT;
764 else if (old_state == IEEE80211_STA_ASSOC &&
765 new_state == IEEE80211_STA_AUTH)
766 op = REMOVE;
767 }
768
769 switch (op) {
770 case ADD:
771 ret = iwlagn_mac_sta_add(hw, vif, sta);
772 break;
773 case REMOVE:
774 ret = iwlagn_mac_sta_remove(hw, vif, sta);
775 break;
776 case ADD_RATE_INIT:
777 ret = iwlagn_mac_sta_add(hw, vif, sta);
778 if (ret)
779 break;
fb5fe5b9
JB		 780 /* Initialize rate scaling */
781 IWL_DEBUG_INFO(priv,
782 "Initializing rate scaling for station %pM\n",
783 sta->addr);
784 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
785 ret = 0;
786 break;
ab0bd5b3
JB		 787 case HT_RATE_INIT:
788 /* Initialize rate scaling */
789 ret = iwl_sta_update_ht(priv, vif_priv->ctx, sta);
790 if (ret)
791 break;
792 IWL_DEBUG_INFO(priv,
793 "Initializing rate scaling for station %pM\n",
794 sta->addr);
795 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
796 ret = 0;
797 break;
fb5fe5b9
JB		 798 default:
799 ret = 0;
800 break;
801 }
802
803 /*
804 * mac80211 might WARN if we fail, but due the way we
805 * (badly) handle hard rfkill, we might fail here
806 */
807 if (iwl_is_rfkill(priv->shrd))
808 ret = 0;
809
b1eea297 810 mutex_unlock(&priv->mutex);
7335613a
WYG		 811 IWL_DEBUG_MAC80211(priv, "leave\n");
812
813 return ret;
814}
815
816static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
817 struct ieee80211_channel_switch *ch_switch)
818{
d0f76d68 819 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 820 const struct iwl_channel_info *ch_info;
821 struct ieee80211_conf *conf = &hw->conf;
822 struct ieee80211_channel *channel = ch_switch->channel;
823 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
824 /*
825 * MULTI-FIXME
826 * When we add support for multiple interfaces, we need to
827 * revisit this. The channel switch command in the device
828 * only affects the BSS context, but what does that really
829 * mean? And what if we get a CSA on the second interface?
830 * This needs a lot of work.
831 */
832 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
833 u16 ch;
834
835 IWL_DEBUG_MAC80211(priv, "enter\n");
836
b1eea297 837 mutex_lock(&priv->mutex);
7335613a
WYG		 838
839 if (iwl_is_rfkill(priv->shrd))
840 goto out;
841
842 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
843 test_bit(STATUS_SCANNING, &priv->shrd->status) ||
844 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status))
845 goto out;
846
847 if (!iwl_is_associated_ctx(ctx))
848 goto out;
849
38622419 850 if (!cfg(priv)->lib->set_channel_switch)
7335613a
WYG		 851 goto out;
852
853 ch = channel->hw_value;
854 if (le16_to_cpu(ctx->active.channel) == ch)
855 goto out;
856
857 ch_info = iwl_get_channel_info(priv, channel->band, ch);
858 if (!is_channel_valid(ch_info)) {
859 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
860 goto out;
861 }
862
7335613a
WYG		 863 priv->current_ht_config.smps = conf->smps_mode;
864
865 /* Configure HT40 channels */
866 ctx->ht.enabled = conf_is_ht(conf);
137ce797
WYG		 867 if (ctx->ht.enabled)
868 iwlagn_config_ht40(conf, ctx);
869 else
7335613a
WYG		 870 ctx->ht.is_40mhz = false;
871
872 if ((le16_to_cpu(ctx->staging.channel) != ch))
873 ctx->staging.flags = 0;
874
875 iwl_set_rxon_channel(priv, channel, ctx);
876 iwl_set_rxon_ht(priv, ht_conf);
877 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
878
7335613a
WYG		 879 iwl_set_rate(priv);
880 /*
881 * at this point, staging_rxon has the
882 * configuration for channel switch
883 */
884 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status);
885 priv->switch_channel = cpu_to_le16(ch);
38622419 886 if (cfg(priv)->lib->set_channel_switch(priv, ch_switch)) {
7335613a
WYG		 887 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status);
888 priv->switch_channel = 0;
889 ieee80211_chswitch_done(ctx->vif, false);
890 }
891
892out:
b1eea297 893 mutex_unlock(&priv->mutex);
7335613a
WYG		 894 IWL_DEBUG_MAC80211(priv, "leave\n");
895}
896
897static void iwlagn_configure_filter(struct ieee80211_hw *hw,
898 unsigned int changed_flags,
899 unsigned int *total_flags,
900 u64 multicast)
901{
d0f76d68 902 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 903 __le32 filter_or = 0, filter_nand = 0;
904 struct iwl_rxon_context *ctx;
905
906#define CHK(test, flag) do { \
907 if (*total_flags & (test)) \
908 filter_or |= (flag); \
909 else \
910 filter_nand |= (flag); \
911 } while (0)
912
913 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
914 changed_flags, *total_flags);
915
916 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
917 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
918 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
919 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
920
921#undef CHK
922
b1eea297 923 mutex_lock(&priv->mutex);
7335613a
WYG		 924
925 for_each_context(priv, ctx) {
926 ctx->staging.filter_flags &= ~filter_nand;
927 ctx->staging.filter_flags |= filter_or;
928
929 /*
930 * Not committing directly because hardware can perform a scan,
931 * but we'll eventually commit the filter flags change anyway.
932 */
933 }
934
b1eea297 935 mutex_unlock(&priv->mutex);
7335613a
WYG		 936
937 /*
938 * Receiving all multicast frames is always enabled by the
939 * default flags setup in iwl_connection_init_rx_config()
940 * since we currently do not support programming multicast
941 * filters into the device.
942 */
943 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
944 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
945}
946
947static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
948{
d0f76d68 949 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a 950
b1eea297 951 mutex_lock(&priv->mutex);
7335613a
WYG		 952 IWL_DEBUG_MAC80211(priv, "enter\n");
953
954 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
955 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
956 goto done;
957 }
958 if (iwl_is_rfkill(priv->shrd)) {
959 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
960 goto done;
961 }
962
963 /*
964 * mac80211 will not push any more frames for transmit
965 * until the flush is completed
966 */
967 if (drop) {
968 IWL_DEBUG_MAC80211(priv, "send flush command\n");
969 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
970 IWL_ERR(priv, "flush request fail\n");
971 goto done;
972 }
973 }
974 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
975 iwl_trans_wait_tx_queue_empty(trans(priv));
976done:
b1eea297 977 mutex_unlock(&priv->mutex);
7335613a
WYG		 978 IWL_DEBUG_MAC80211(priv, "leave\n");
979}
980
981static int iwlagn_mac_remain_on_channel(struct ieee80211_hw *hw,
982 struct ieee80211_channel *channel,
983 enum nl80211_channel_type channel_type,
984 int duration)
985{
d0f76d68 986 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 987 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
988 int err = 0;
989
990 if (!(priv->shrd->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
991 return -EOPNOTSUPP;
992
993 if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
994 return -EOPNOTSUPP;
995
996 IWL_DEBUG_MAC80211(priv, "enter\n");
b1eea297 997 mutex_lock(&priv->mutex);
7335613a
WYG		 998
999 if (test_bit(STATUS_SCAN_HW, &priv->shrd->status)) {
1000 err = -EBUSY;
1001 goto out;
1002 }
1003
1004 priv->hw_roc_channel = channel;
1005 priv->hw_roc_chantype = channel_type;
3ddf6bef
JB		 1006 /* convert from ms to TU */
1007 priv->hw_roc_duration = DIV_ROUND_UP(1000 * duration, 1024);
7335613a
WYG		 1008 priv->hw_roc_start_notified = false;
1009 cancel_delayed_work(&priv->hw_roc_disable_work);
1010
1011 if (!ctx->is_active) {
a69cd040
JB		 1012 static const struct iwl_qos_info default_qos_data = {
1013 .def_qos_parm = {
1014 .ac[0] = {
1015 .cw_min = cpu_to_le16(3),
1016 .cw_max = cpu_to_le16(7),
1017 .aifsn = 2,
1018 .edca_txop = cpu_to_le16(1504),
1019 },
1020 .ac[1] = {
1021 .cw_min = cpu_to_le16(7),
1022 .cw_max = cpu_to_le16(15),
1023 .aifsn = 2,
1024 .edca_txop = cpu_to_le16(3008),
1025 },
1026 .ac[2] = {
1027 .cw_min = cpu_to_le16(15),
1028 .cw_max = cpu_to_le16(1023),
1029 .aifsn = 3,
1030 },
1031 .ac[3] = {
1032 .cw_min = cpu_to_le16(15),
1033 .cw_max = cpu_to_le16(1023),
1034 .aifsn = 7,
1035 },
1036 },
1037 };
1038
7335613a 1039 ctx->is_active = true;
a69cd040 1040 ctx->qos_data = default_qos_data;
7335613a
WYG		 1041 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1042 memcpy(ctx->staging.node_addr,
1043 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
1044 ETH_ALEN);
1045 memcpy(ctx->staging.bssid_addr,
1046 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
1047 ETH_ALEN);
1048 err = iwlagn_commit_rxon(priv, ctx);
1049 if (err)
1050 goto out;
1051 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
1052 RXON_FILTER_PROMISC_MSK |
1053 RXON_FILTER_CTL2HOST_MSK;
1054
1055 err = iwlagn_commit_rxon(priv, ctx);
1056 if (err) {
1057 iwlagn_disable_roc(priv);
1058 goto out;
1059 }
1060 priv->hw_roc_setup = true;
1061 }
1062
1063 err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
1064 if (err)
1065 iwlagn_disable_roc(priv);
1066
1067 out:
b1eea297 1068 mutex_unlock(&priv->mutex);
7335613a
WYG		 1069 IWL_DEBUG_MAC80211(priv, "leave\n");
1070
1071 return err;
1072}
1073
1074static int iwlagn_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
1075{
d0f76d68 1076 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 1077
1078 if (!(priv->shrd->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
1079 return -EOPNOTSUPP;
1080
1081 IWL_DEBUG_MAC80211(priv, "enter\n");
b1eea297 1082 mutex_lock(&priv->mutex);
7335613a
WYG		 1083 iwl_scan_cancel_timeout(priv, priv->hw_roc_duration);
1084 iwlagn_disable_roc(priv);
b1eea297 1085 mutex_unlock(&priv->mutex);
7335613a
WYG		 1086 IWL_DEBUG_MAC80211(priv, "leave\n");
1087
1088 return 0;
1089}
1090
7335613a
WYG		 1091static void iwlagn_mac_rssi_callback(struct ieee80211_hw *hw,
1092 enum ieee80211_rssi_event rssi_event)
1093{
d0f76d68 1094 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 1095
1096 IWL_DEBUG_MAC80211(priv, "enter\n");
b1eea297 1097 mutex_lock(&priv->mutex);
7335613a 1098
38622419
DF		 1099 if (cfg(priv)->bt_params &&
1100 cfg(priv)->bt_params->advanced_bt_coexist) {
7335613a
WYG		 1101 if (rssi_event == RSSI_EVENT_LOW)
1102 priv->bt_enable_pspoll = true;
1103 else if (rssi_event == RSSI_EVENT_HIGH)
1104 priv->bt_enable_pspoll = false;
1105
1106 iwlagn_send_advance_bt_config(priv);
1107 } else {
1108 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
1109 "ignoring RSSI callback\n");
1110 }
1111
b1eea297 1112 mutex_unlock(&priv->mutex);
7335613a
WYG		 1113 IWL_DEBUG_MAC80211(priv, "leave\n");
1114}
1115
1116static int iwlagn_mac_set_tim(struct ieee80211_hw *hw,
1117 struct ieee80211_sta *sta, bool set)
1118{
d0f76d68 1119 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a 1120
1ee158d8 1121 queue_work(priv->workqueue, &priv->beacon_update);
7335613a
WYG		 1122
1123 return 0;
1124}
1125
0b7a4c78
WYG		 1126static int iwlagn_mac_conf_tx(struct ieee80211_hw *hw,
1127 struct ieee80211_vif *vif, u16 queue,
1128 const struct ieee80211_tx_queue_params *params)
1129{
d0f76d68 1130 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
0b7a4c78
WYG		 1131 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1132 struct iwl_rxon_context *ctx = vif_priv->ctx;
0b7a4c78
WYG		 1133 int q;
1134
1135 if (WARN_ON(!ctx))
1136 return -EINVAL;
1137
1138 IWL_DEBUG_MAC80211(priv, "enter\n");
1139
1140 if (!iwl_is_ready_rf(priv->shrd)) {
1141 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
1142 return -EIO;
1143 }
1144
1145 if (queue >= AC_NUM) {
1146 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
1147 return 0;
1148 }
1149
1150 q = AC_NUM - 1 - queue;
1151
b1eea297 1152 mutex_lock(&priv->mutex);
0b7a4c78
WYG		 1153
1154 ctx->qos_data.def_qos_parm.ac[q].cw_min =
1155 cpu_to_le16(params->cw_min);
1156 ctx->qos_data.def_qos_parm.ac[q].cw_max =
1157 cpu_to_le16(params->cw_max);
1158 ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
1159 ctx->qos_data.def_qos_parm.ac[q].edca_txop =
1160 cpu_to_le16((params->txop * 32));
1161
1162 ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0;
1163
b1eea297 1164 mutex_unlock(&priv->mutex);
0b7a4c78
WYG		 1165
1166 IWL_DEBUG_MAC80211(priv, "leave\n");
1167 return 0;
1168}
1169
1170static int iwlagn_mac_tx_last_beacon(struct ieee80211_hw *hw)
1171{
d0f76d68 1172 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
0b7a4c78
WYG		 1173
1174 return priv->ibss_manager == IWL_IBSS_MANAGER;
1175}
1176
1177static int iwl_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
1178{
1179 iwl_connection_init_rx_config(priv, ctx);
1180
1181 iwlagn_set_rxon_chain(priv, ctx);
1182
1183 return iwlagn_commit_rxon(priv, ctx);
1184}
1185
1186static int iwl_setup_interface(struct iwl_priv *priv,
1187 struct iwl_rxon_context *ctx)
1188{
1189 struct ieee80211_vif *vif = ctx->vif;
1190 int err;
1191
b1eea297 1192 lockdep_assert_held(&priv->mutex);
0b7a4c78
WYG		 1193
1194 /*
1195 * This variable will be correct only when there's just
1196 * a single context, but all code using it is for hardware
1197 * that supports only one context.
1198 */
1199 priv->iw_mode = vif->type;
1200
1201 ctx->is_active = true;
1202
1203 err = iwl_set_mode(priv, ctx);
1204 if (err) {
1205 if (!ctx->always_active)
1206 ctx->is_active = false;
1207 return err;
1208 }
1209
38622419 1210 if (cfg(priv)->bt_params && cfg(priv)->bt_params->advanced_bt_coexist &&
0b7a4c78
WYG		 1211 vif->type == NL80211_IFTYPE_ADHOC) {
1212 /*
1213 * pretend to have high BT traffic as long as we
1214 * are operating in IBSS mode, as this will cause
1215 * the rate scaling etc. to behave as intended.
1216 */
1217 priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
1218 }
1219
1220 return 0;
1221}
1222
1223static int iwlagn_mac_add_interface(struct ieee80211_hw *hw,
1224 struct ieee80211_vif *vif)
1225{
d0f76d68 1226 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
0b7a4c78
WYG		 1227 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1228 struct iwl_rxon_context *tmp, *ctx = NULL;
1229 int err;
1230 enum nl80211_iftype viftype = ieee80211_vif_type_p2p(vif);
1231
1232 IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n",
1233 viftype, vif->addr);
1234
1235 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1236
b1eea297 1237 mutex_lock(&priv->mutex);
0b7a4c78
WYG		 1238
1239 iwlagn_disable_roc(priv);
1240
1241 if (!iwl_is_ready_rf(priv->shrd)) {
1242 IWL_WARN(priv, "Try to add interface when device not ready\n");
1243 err = -EINVAL;
1244 goto out;
1245 }
1246
1247 for_each_context(priv, tmp) {
1248 u32 possible_modes =
1249 tmp->interface_modes | tmp->exclusive_interface_modes;
1250
1251 if (tmp->vif) {
1252 /* check if this busy context is exclusive */
1253 if (tmp->exclusive_interface_modes &
1254 BIT(tmp->vif->type)) {
1255 err = -EINVAL;
1256 goto out;
1257 }
1258 continue;
1259 }
1260
1261 if (!(possible_modes & BIT(viftype)))
1262 continue;
1263
1264 /* have maybe usable context w/o interface */
1265 ctx = tmp;
1266 break;
1267 }
1268
1269 if (!ctx) {
1270 err = -EOPNOTSUPP;
1271 goto out;
1272 }
1273
1274 vif_priv->ctx = ctx;
1275 ctx->vif = vif;
1276
1277 err = iwl_setup_interface(priv, ctx);
1278 if (!err)
1279 goto out;
1280
1281 ctx->vif = NULL;
1282 priv->iw_mode = NL80211_IFTYPE_STATION;
1283 out:
b1eea297 1284 mutex_unlock(&priv->mutex);
0b7a4c78
WYG		 1285
1286 IWL_DEBUG_MAC80211(priv, "leave\n");
1287 return err;
1288}
1289
1290static void iwl_teardown_interface(struct iwl_priv *priv,
1291 struct ieee80211_vif *vif,
1292 bool mode_change)
1293{
1294 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1295
b1eea297 1296 lockdep_assert_held(&priv->mutex);
0b7a4c78
WYG		 1297
1298 if (priv->scan_vif == vif) {
1299 iwl_scan_cancel_timeout(priv, 200);
1300 iwl_force_scan_end(priv);
1301 }
1302
1303 if (!mode_change) {
1304 iwl_set_mode(priv, ctx);
1305 if (!ctx->always_active)
1306 ctx->is_active = false;
1307 }
1308
1309 /*
1310 * When removing the IBSS interface, overwrite the
1311 * BT traffic load with the stored one from the last
1312 * notification, if any. If this is a device that
1313 * doesn't implement this, this has no effect since
1314 * both values are the same and zero.
1315 */
1316 if (vif->type == NL80211_IFTYPE_ADHOC)
1317 priv->bt_traffic_load = priv->last_bt_traffic_load;
1318}
1319
1320static void iwlagn_mac_remove_interface(struct ieee80211_hw *hw,
1321 struct ieee80211_vif *vif)
1322{
d0f76d68 1323 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
0b7a4c78
WYG		 1324 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1325
1326 IWL_DEBUG_MAC80211(priv, "enter\n");
1327
b1eea297 1328 mutex_lock(&priv->mutex);
0b7a4c78
WYG		 1329
1330 if (WARN_ON(ctx->vif != vif)) {
1331 struct iwl_rxon_context *tmp;
1332 IWL_ERR(priv, "ctx->vif = %p, vif = %p\n", ctx->vif, vif);
1333 for_each_context(priv, tmp)
1334 IWL_ERR(priv, "\tID = %d:\tctx = %p\tctx->vif = %p\n",
1335 tmp->ctxid, tmp, tmp->vif);
1336 }
1337 ctx->vif = NULL;
1338
1339 iwl_teardown_interface(priv, vif, false);
1340
b1eea297 1341 mutex_unlock(&priv->mutex);
0b7a4c78
WYG		 1342
1343 IWL_DEBUG_MAC80211(priv, "leave\n");
1344
1345}
1346
1347static int iwlagn_mac_change_interface(struct ieee80211_hw *hw,
1348 struct ieee80211_vif *vif,
1349 enum nl80211_iftype newtype, bool newp2p)
1350{
d0f76d68 1351 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
0b7a4c78
WYG		 1352 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1353 struct iwl_rxon_context *bss_ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1354 struct iwl_rxon_context *tmp;
1355 enum nl80211_iftype newviftype = newtype;
1356 u32 interface_modes;
1357 int err;
1358
1359 IWL_DEBUG_MAC80211(priv, "enter\n");
1360
1361 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1362
b1eea297 1363 mutex_lock(&priv->mutex);
0b7a4c78
WYG		 1364
1365 if (!ctx->vif || !iwl_is_ready_rf(priv->shrd)) {
1366 /*
1367 * Huh? But wait ... this can maybe happen when
1368 * we're in the middle of a firmware restart!
1369 */
1370 err = -EBUSY;
1371 goto out;
1372 }
1373
1374 interface_modes = ctx->interface_modes | ctx->exclusive_interface_modes;
1375
1376 if (!(interface_modes & BIT(newtype))) {
1377 err = -EBUSY;
1378 goto out;
1379 }
1380
1381 /*
1382 * Refuse a change that should be done by moving from the PAN
1383 * context to the BSS context instead, if the BSS context is
1384 * available and can support the new interface type.
1385 */
1386 if (ctx->ctxid == IWL_RXON_CTX_PAN && !bss_ctx->vif &&
1387 (bss_ctx->interface_modes & BIT(newtype) ||
1388 bss_ctx->exclusive_interface_modes & BIT(newtype))) {
1389 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
1390 err = -EBUSY;
1391 goto out;
1392 }
1393
1394 if (ctx->exclusive_interface_modes & BIT(newtype)) {
1395 for_each_context(priv, tmp) {
1396 if (ctx == tmp)
1397 continue;
1398
1399 if (!tmp->vif)
1400 continue;
1401
1402 /*
1403 * The current mode switch would be exclusive, but
1404 * another context is active ... refuse the switch.
1405 */
1406 err = -EBUSY;
1407 goto out;
1408 }
1409 }
1410
1411 /* success */
1412 iwl_teardown_interface(priv, vif, true);
1413 vif->type = newviftype;
1414 vif->p2p = newp2p;
1415 err = iwl_setup_interface(priv, ctx);
1416 WARN_ON(err);
1417 /*
1418 * We've switched internally, but submitting to the
1419 * device may have failed for some reason. Mask this
1420 * error, because otherwise mac80211 will not switch
1421 * (and set the interface type back) and we'll be
1422 * out of sync with it.
1423 */
1424 err = 0;
1425
1426 out:
b1eea297 1427 mutex_unlock(&priv->mutex);
0b7a4c78
WYG		 1428 IWL_DEBUG_MAC80211(priv, "leave\n");
1429
1430 return err;
1431}
1432
ba4c5319
WYG		 1433static int iwlagn_mac_hw_scan(struct ieee80211_hw *hw,
1434 struct ieee80211_vif *vif,
1435 struct cfg80211_scan_request *req)
1436{
d0f76d68 1437 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
ba4c5319
WYG		 1438 int ret;
1439
1440 IWL_DEBUG_MAC80211(priv, "enter\n");
1441
1442 if (req->n_channels == 0)
1443 return -EINVAL;
1444
b1eea297 1445 mutex_lock(&priv->mutex);
ba4c5319
WYG		 1446
1447 /*
1448 * If an internal scan is in progress, just set
1449 * up the scan_request as per above.
1450 */
1451 if (priv->scan_type != IWL_SCAN_NORMAL) {
1452 IWL_DEBUG_SCAN(priv,
1453 "SCAN request during internal scan - defer\n");
1454 priv->scan_request = req;
1455 priv->scan_vif = vif;
1456 ret = 0;
1457 } else {
1458 priv->scan_request = req;
1459 priv->scan_vif = vif;
1460 /*
1461 * mac80211 will only ask for one band at a time
1462 * so using channels[0] here is ok
1463 */
1464 ret = iwl_scan_initiate(priv, vif, IWL_SCAN_NORMAL,
1465 req->channels[0]->band);
1466 if (ret) {
1467 priv->scan_request = NULL;
1468 priv->scan_vif = NULL;
1469 }
1470 }
1471
1472 IWL_DEBUG_MAC80211(priv, "leave\n");
1473
b1eea297 1474 mutex_unlock(&priv->mutex);
ba4c5319
WYG		 1475
1476 return ret;
1477}
1478
76b29331
WYG		 1479static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1480{
9451ca1a
JB		 1481 struct iwl_addsta_cmd cmd = {
1482 .mode = STA_CONTROL_MODIFY_MSK,
1483 .station_flags_msk = STA_FLG_PWR_SAVE_MSK,
1484 .sta.sta_id = sta_id,
1485 };
76b29331 1486
9451ca1a 1487 iwl_send_add_sta(priv, &cmd, CMD_ASYNC);
76b29331
WYG		 1488}
1489
1490static void iwlagn_mac_sta_notify(struct ieee80211_hw *hw,
1491 struct ieee80211_vif *vif,
1492 enum sta_notify_cmd cmd,
1493 struct ieee80211_sta *sta)
1494{
d0f76d68 1495 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
76b29331
WYG		 1496 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
1497 int sta_id;
1498
1499 IWL_DEBUG_MAC80211(priv, "enter\n");
1500
1501 switch (cmd) {
1502 case STA_NOTIFY_SLEEP:
1503 WARN_ON(!sta_priv->client);
1504 sta_priv->asleep = true;
1505 if (atomic_read(&sta_priv->pending_frames) > 0)
1506 ieee80211_sta_block_awake(hw, sta, true);
1507 break;
1508 case STA_NOTIFY_AWAKE:
1509 WARN_ON(!sta_priv->client);
1510 if (!sta_priv->asleep)
1511 break;
1512 sta_priv->asleep = false;
1513 sta_id = iwl_sta_id(sta);
1514 if (sta_id != IWL_INVALID_STATION)
1515 iwl_sta_modify_ps_wake(priv, sta_id);
1516 break;
1517 default:
1518 break;
1519 }
1520 IWL_DEBUG_MAC80211(priv, "leave\n");
1521}
1522
7335613a
WYG		 1523struct ieee80211_ops iwlagn_hw_ops = {
1524 .tx = iwlagn_mac_tx,
1525 .start = iwlagn_mac_start,
1526 .stop = iwlagn_mac_stop,
1527#ifdef CONFIG_PM_SLEEP
1528 .suspend = iwlagn_mac_suspend,
1529 .resume = iwlagn_mac_resume,
1530#endif
1531 .add_interface = iwlagn_mac_add_interface,
1532 .remove_interface = iwlagn_mac_remove_interface,
1533 .change_interface = iwlagn_mac_change_interface,
1534 .config = iwlagn_mac_config,
1535 .configure_filter = iwlagn_configure_filter,
1536 .set_key = iwlagn_mac_set_key,
1537 .update_tkip_key = iwlagn_mac_update_tkip_key,
1538 .set_rekey_data = iwlagn_mac_set_rekey_data,
1539 .conf_tx = iwlagn_mac_conf_tx,
1540 .bss_info_changed = iwlagn_bss_info_changed,
1541 .ampdu_action = iwlagn_mac_ampdu_action,
1542 .hw_scan = iwlagn_mac_hw_scan,
1543 .sta_notify = iwlagn_mac_sta_notify,
fb5fe5b9 1544 .sta_state = iwlagn_mac_sta_state,
7335613a
WYG		 1545 .channel_switch = iwlagn_mac_channel_switch,
1546 .flush = iwlagn_mac_flush,
1547 .tx_last_beacon = iwlagn_mac_tx_last_beacon,
1548 .remain_on_channel = iwlagn_mac_remain_on_channel,
1549 .cancel_remain_on_channel = iwlagn_mac_cancel_remain_on_channel,
1550 .rssi_callback = iwlagn_mac_rssi_callback,
1551 CFG80211_TESTMODE_CMD(iwlagn_mac_testmode_cmd)
1552 CFG80211_TESTMODE_DUMP(iwlagn_mac_testmode_dump)
7335613a
WYG		 1553 .set_tim = iwlagn_mac_set_tim,
1554};
1555
1556/* This function both allocates and initializes hw and priv. */
1557struct ieee80211_hw *iwl_alloc_all(void)
1558{
1559 struct iwl_priv *priv;
d0f76d68 1560 struct iwl_op_mode *op_mode;
7335613a
WYG		 1561 /* mac80211 allocates memory for this device instance, including
1562 * space for this driver's private structure */
1563 struct ieee80211_hw *hw;
1564
d0f76d68
EG		 1565 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv) +
1566 sizeof(struct iwl_op_mode), &iwlagn_hw_ops);
7335613a
WYG		 1567 if (!hw)
1568 goto out;
1569
d0f76d68
EG		 1570 op_mode = hw->priv;
1571 priv = IWL_OP_MODE_GET_DVM(op_mode);
7335613a
WYG		 1572 priv->hw = hw;
1573
1574out:
1575 return hw;
1576}
Linux kernel - Deliverables
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