projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
iwlwifi: change args to ucode routines
[linux-2.6-block.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
edf38334 45#include "iwl-ucode.h"
7335613a 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
6516174d 198 if (nic(priv)->fw.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
1ee158d8 346 flush_workqueue(priv->workqueue);
7335613a
WYG		 347
348 /* User space software may expect getting rfkill changes
1df06bdc
EG		 349 * even if interface is down, trans->down will leave the RF
350 * kill interrupt enabled
351 */
352 iwl_trans_stop_hw(trans(priv));
7335613a
WYG		 353
354 IWL_DEBUG_MAC80211(priv, "leave\n");
355}
356
357static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
358 struct ieee80211_vif *vif,
359 struct cfg80211_gtk_rekey_data *data)
360{
361 struct iwl_priv *priv = hw->priv;
362
363 if (iwlagn_mod_params.sw_crypto)
364 return;
365
366 IWL_DEBUG_MAC80211(priv, "enter\n");
367 mutex_lock(&priv->shrd->mutex);
368
369 if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
370 goto out;
371
372 memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
373 memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
374 priv->replay_ctr =
375 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
376 priv->have_rekey_data = true;
377
378 out:
379 mutex_unlock(&priv->shrd->mutex);
380 IWL_DEBUG_MAC80211(priv, "leave\n");
381}
382
383#ifdef CONFIG_PM_SLEEP
7335613a
WYG		 384
385static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
386 struct cfg80211_wowlan *wowlan)
387{
388 struct iwl_priv *priv = hw->priv;
7335613a 389 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
023ca58f 390 int ret;
7335613a
WYG		 391
392 if (WARN_ON(!wowlan))
393 return -EINVAL;
394
395 IWL_DEBUG_MAC80211(priv, "enter\n");
396 mutex_lock(&priv->shrd->mutex);
397
398 /* Don't attempt WoWLAN when not associated, tear down instead. */
399 if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
400 !iwl_is_associated_ctx(ctx)) {
401 ret = 1;
402 goto out;
403 }
404
023ca58f 405 ret = iwlagn_suspend(priv, hw, wowlan);
7335613a
WYG		 406 if (ret)
407 goto error;
408
1042db2a 409 device_set_wakeup_enable(trans(priv)->dev, true);
7335613a
WYG		 410
411 /* Now let the ucode operate on its own */
1042db2a 412 iwl_write32(trans(priv), CSR_UCODE_DRV_GP1_SET,
7335613a
WYG		 413 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
414
415 goto out;
416
417 error:
418 priv->shrd->wowlan = false;
419 iwlagn_prepare_restart(priv);
420 ieee80211_restart_hw(priv->hw);
421 out:
422 mutex_unlock(&priv->shrd->mutex);
7335613a
WYG		 423 IWL_DEBUG_MAC80211(priv, "leave\n");
424
425 return ret;
426}
427
428static int iwlagn_mac_resume(struct ieee80211_hw *hw)
429{
430 struct iwl_priv *priv = hw->priv;
431 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
432 struct ieee80211_vif *vif;
433 unsigned long flags;
434 u32 base, status = 0xffffffff;
435 int ret = -EIO;
436
437 IWL_DEBUG_MAC80211(priv, "enter\n");
438 mutex_lock(&priv->shrd->mutex);
439
1042db2a 440 iwl_write32(trans(priv), CSR_UCODE_DRV_GP1_CLR,
7335613a
WYG		 441 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
442
ae6130fc 443 base = priv->shrd->device_pointers.error_event_table;
7335613a 444 if (iwlagn_hw_valid_rtc_data_addr(base)) {
1042db2a
EG		 445 spin_lock_irqsave(&trans(priv)->reg_lock, flags);
446 ret = iwl_grab_nic_access_silent(trans(priv));
7335613a 447 if (ret == 0) {
1042db2a
EG		 448 iwl_write32(trans(priv), HBUS_TARG_MEM_RADDR, base);
449 status = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
450 iwl_release_nic_access(trans(priv));
7335613a 451 }
1042db2a 452 spin_unlock_irqrestore(&trans(priv)->reg_lock, flags);
7335613a
WYG		 453
454#ifdef CONFIG_IWLWIFI_DEBUGFS
455 if (ret == 0) {
6516174d 456 struct iwl_nic *nic = nic(priv);
7335613a
WYG		 457 if (!priv->wowlan_sram)
458 priv->wowlan_sram =
6516174d 459 kzalloc(nic->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,
6516174d 466 nic->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
474 priv->shrd->wowlan = false;
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
484 mutex_unlock(&priv->shrd->mutex);
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{
496 struct iwl_priv *priv = hw->priv;
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{
511 struct iwl_priv *priv = hw->priv;
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{
521 struct iwl_priv *priv = hw->priv;
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
562 mutex_lock(&priv->shrd->mutex);
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
613 mutex_unlock(&priv->shrd->mutex);
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{
625 struct iwl_priv *priv = hw->priv;
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
38622419 632 if (!(cfg(priv)->sku & EEPROM_SKU_CAP_11N_ENABLE))
7335613a
WYG		 633 return -EACCES;
634
635 IWL_DEBUG_MAC80211(priv, "enter\n");
636 mutex_lock(&priv->shrd->mutex);
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);
648 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
649 ret = 0;
650 break;
651 case IEEE80211_AMPDU_TX_START:
7428994d
JB		 652 if (iwlagn_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
653 break;
7335613a
WYG		 654 IWL_DEBUG_HT(priv, "start Tx\n");
655 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
656 break;
657 case IEEE80211_AMPDU_TX_STOP:
658 IWL_DEBUG_HT(priv, "stop Tx\n");
659 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
660 if ((ret == 0) && (priv->agg_tids_count > 0)) {
661 priv->agg_tids_count--;
662 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
663 priv->agg_tids_count);
664 }
665 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
666 ret = 0;
38622419
DF		 667 if (!priv->agg_tids_count && cfg(priv)->ht_params &&
668 cfg(priv)->ht_params->use_rts_for_aggregation) {
7335613a
WYG		 669 /*
670 * switch off RTS/CTS if it was previously enabled
671 */
672 sta_priv->lq_sta.lq.general_params.flags &=
673 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
674 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
675 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
676 }
677 break;
678 case IEEE80211_AMPDU_TX_OPERATIONAL:
822e8b2a 679 ret = iwlagn_tx_agg_oper(priv, vif, sta, tid, buf_size);
7335613a
WYG		 680 break;
681 }
682 mutex_unlock(&priv->shrd->mutex);
683 IWL_DEBUG_MAC80211(priv, "leave\n");
684 return ret;
685}
686
687static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
688 struct ieee80211_vif *vif,
689 struct ieee80211_sta *sta)
690{
691 struct iwl_priv *priv = hw->priv;
692 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
693 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
694 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
695 int ret = 0;
696 u8 sta_id;
697
698 IWL_DEBUG_MAC80211(priv, "received request to add station %pM\n",
699 sta->addr);
700 mutex_lock(&priv->shrd->mutex);
701 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
702 sta->addr);
703 sta_priv->sta_id = IWL_INVALID_STATION;
704
705 atomic_set(&sta_priv->pending_frames, 0);
706 if (vif->type == NL80211_IFTYPE_AP)
707 sta_priv->client = true;
708
709 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
710 is_ap, sta, &sta_id);
711 if (ret) {
712 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
713 sta->addr, ret);
714 /* Should we return success if return code is EEXIST ? */
715 goto out;
716 }
717
718 sta_priv->sta_id = sta_id;
719
720 /* Initialize rate scaling */
721 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
722 sta->addr);
723 iwl_rs_rate_init(priv, sta, sta_id);
724 out:
725 mutex_unlock(&priv->shrd->mutex);
726 IWL_DEBUG_MAC80211(priv, "leave\n");
727
728 return ret;
729}
730
731static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
732 struct ieee80211_channel_switch *ch_switch)
733{
734 struct iwl_priv *priv = hw->priv;
735 const struct iwl_channel_info *ch_info;
736 struct ieee80211_conf *conf = &hw->conf;
737 struct ieee80211_channel *channel = ch_switch->channel;
738 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
739 /*
740 * MULTI-FIXME
741 * When we add support for multiple interfaces, we need to
742 * revisit this. The channel switch command in the device
743 * only affects the BSS context, but what does that really
744 * mean? And what if we get a CSA on the second interface?
745 * This needs a lot of work.
746 */
747 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
748 u16 ch;
749
750 IWL_DEBUG_MAC80211(priv, "enter\n");
751
752 mutex_lock(&priv->shrd->mutex);
753
754 if (iwl_is_rfkill(priv->shrd))
755 goto out;
756
757 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
758 test_bit(STATUS_SCANNING, &priv->shrd->status) ||
759 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status))
760 goto out;
761
762 if (!iwl_is_associated_ctx(ctx))
763 goto out;
764
38622419 765 if (!cfg(priv)->lib->set_channel_switch)
7335613a
WYG		 766 goto out;
767
768 ch = channel->hw_value;
769 if (le16_to_cpu(ctx->active.channel) == ch)
770 goto out;
771
772 ch_info = iwl_get_channel_info(priv, channel->band, ch);
773 if (!is_channel_valid(ch_info)) {
774 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
775 goto out;
776 }
777
778 spin_lock_irq(&priv->shrd->lock);
779
780 priv->current_ht_config.smps = conf->smps_mode;
781
782 /* Configure HT40 channels */
783 ctx->ht.enabled = conf_is_ht(conf);
137ce797
WYG		 784 if (ctx->ht.enabled)
785 iwlagn_config_ht40(conf, ctx);
786 else
7335613a
WYG		 787 ctx->ht.is_40mhz = false;
788
789 if ((le16_to_cpu(ctx->staging.channel) != ch))
790 ctx->staging.flags = 0;
791
792 iwl_set_rxon_channel(priv, channel, ctx);
793 iwl_set_rxon_ht(priv, ht_conf);
794 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
795
796 spin_unlock_irq(&priv->shrd->lock);
797
798 iwl_set_rate(priv);
799 /*
800 * at this point, staging_rxon has the
801 * configuration for channel switch
802 */
803 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status);
804 priv->switch_channel = cpu_to_le16(ch);
38622419 805 if (cfg(priv)->lib->set_channel_switch(priv, ch_switch)) {
7335613a
WYG		 806 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status);
807 priv->switch_channel = 0;
808 ieee80211_chswitch_done(ctx->vif, false);
809 }
810
811out:
812 mutex_unlock(&priv->shrd->mutex);
813 IWL_DEBUG_MAC80211(priv, "leave\n");
814}
815
816static void iwlagn_configure_filter(struct ieee80211_hw *hw,
817 unsigned int changed_flags,
818 unsigned int *total_flags,
819 u64 multicast)
820{
821 struct iwl_priv *priv = hw->priv;
822 __le32 filter_or = 0, filter_nand = 0;
823 struct iwl_rxon_context *ctx;
824
825#define CHK(test, flag) do { \
826 if (*total_flags & (test)) \
827 filter_or |= (flag); \
828 else \
829 filter_nand |= (flag); \
830 } while (0)
831
832 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
833 changed_flags, *total_flags);
834
835 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
836 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
837 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
838 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
839
840#undef CHK
841
842 mutex_lock(&priv->shrd->mutex);
843
844 for_each_context(priv, ctx) {
845 ctx->staging.filter_flags &= ~filter_nand;
846 ctx->staging.filter_flags |= filter_or;
847
848 /*
849 * Not committing directly because hardware can perform a scan,
850 * but we'll eventually commit the filter flags change anyway.
851 */
852 }
853
854 mutex_unlock(&priv->shrd->mutex);
855
856 /*
857 * Receiving all multicast frames is always enabled by the
858 * default flags setup in iwl_connection_init_rx_config()
859 * since we currently do not support programming multicast
860 * filters into the device.
861 */
862 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
863 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
864}
865
866static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
867{
868 struct iwl_priv *priv = hw->priv;
869
870 mutex_lock(&priv->shrd->mutex);
871 IWL_DEBUG_MAC80211(priv, "enter\n");
872
873 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
874 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
875 goto done;
876 }
877 if (iwl_is_rfkill(priv->shrd)) {
878 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
879 goto done;
880 }
881
882 /*
883 * mac80211 will not push any more frames for transmit
884 * until the flush is completed
885 */
886 if (drop) {
887 IWL_DEBUG_MAC80211(priv, "send flush command\n");
888 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
889 IWL_ERR(priv, "flush request fail\n");
890 goto done;
891 }
892 }
893 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
894 iwl_trans_wait_tx_queue_empty(trans(priv));
895done:
896 mutex_unlock(&priv->shrd->mutex);
897 IWL_DEBUG_MAC80211(priv, "leave\n");
898}
899
900static int iwlagn_mac_remain_on_channel(struct ieee80211_hw *hw,
901 struct ieee80211_channel *channel,
902 enum nl80211_channel_type channel_type,
903 int duration)
904{
905 struct iwl_priv *priv = hw->priv;
906 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
907 int err = 0;
908
909 if (!(priv->shrd->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
910 return -EOPNOTSUPP;
911
912 if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
913 return -EOPNOTSUPP;
914
915 IWL_DEBUG_MAC80211(priv, "enter\n");
916 mutex_lock(&priv->shrd->mutex);
917
918 if (test_bit(STATUS_SCAN_HW, &priv->shrd->status)) {
919 err = -EBUSY;
920 goto out;
921 }
922
923 priv->hw_roc_channel = channel;
924 priv->hw_roc_chantype = channel_type;
3ddf6bef
JB		 925 /* convert from ms to TU */
926 priv->hw_roc_duration = DIV_ROUND_UP(1000 * duration, 1024);
7335613a
WYG		 927 priv->hw_roc_start_notified = false;
928 cancel_delayed_work(&priv->hw_roc_disable_work);
929
930 if (!ctx->is_active) {
a69cd040
JB		 931 static const struct iwl_qos_info default_qos_data = {
932 .def_qos_parm = {
933 .ac[0] = {
934 .cw_min = cpu_to_le16(3),
935 .cw_max = cpu_to_le16(7),
936 .aifsn = 2,
937 .edca_txop = cpu_to_le16(1504),
938 },
939 .ac[1] = {
940 .cw_min = cpu_to_le16(7),
941 .cw_max = cpu_to_le16(15),
942 .aifsn = 2,
943 .edca_txop = cpu_to_le16(3008),
944 },
945 .ac[2] = {
946 .cw_min = cpu_to_le16(15),
947 .cw_max = cpu_to_le16(1023),
948 .aifsn = 3,
949 },
950 .ac[3] = {
951 .cw_min = cpu_to_le16(15),
952 .cw_max = cpu_to_le16(1023),
953 .aifsn = 7,
954 },
955 },
956 };
957
7335613a 958 ctx->is_active = true;
a69cd040 959 ctx->qos_data = default_qos_data;
7335613a
WYG		 960 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
961 memcpy(ctx->staging.node_addr,
962 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
963 ETH_ALEN);
964 memcpy(ctx->staging.bssid_addr,
965 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
966 ETH_ALEN);
967 err = iwlagn_commit_rxon(priv, ctx);
968 if (err)
969 goto out;
970 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
971 RXON_FILTER_PROMISC_MSK |
972 RXON_FILTER_CTL2HOST_MSK;
973
974 err = iwlagn_commit_rxon(priv, ctx);
975 if (err) {
976 iwlagn_disable_roc(priv);
977 goto out;
978 }
979 priv->hw_roc_setup = true;
980 }
981
982 err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
983 if (err)
984 iwlagn_disable_roc(priv);
985
986 out:
987 mutex_unlock(&priv->shrd->mutex);
988 IWL_DEBUG_MAC80211(priv, "leave\n");
989
990 return err;
991}
992
993static int iwlagn_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
994{
995 struct iwl_priv *priv = hw->priv;
996
997 if (!(priv->shrd->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
998 return -EOPNOTSUPP;
999
1000 IWL_DEBUG_MAC80211(priv, "enter\n");
1001 mutex_lock(&priv->shrd->mutex);
1002 iwl_scan_cancel_timeout(priv, priv->hw_roc_duration);
1003 iwlagn_disable_roc(priv);
1004 mutex_unlock(&priv->shrd->mutex);
1005 IWL_DEBUG_MAC80211(priv, "leave\n");
1006
1007 return 0;
1008}
1009
1010static int iwlagn_mac_tx_sync(struct ieee80211_hw *hw,
1011 struct ieee80211_vif *vif,
1012 const u8 *bssid,
1013 enum ieee80211_tx_sync_type type)
1014{
1015 struct iwl_priv *priv = hw->priv;
1016 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1017 struct iwl_rxon_context *ctx = vif_priv->ctx;
1018 int ret;
1019 u8 sta_id;
1020
5d22df20
JL		 1021 if (ctx->ctxid != IWL_RXON_CTX_PAN)
1022 return 0;
1023
7335613a
WYG		 1024 IWL_DEBUG_MAC80211(priv, "enter\n");
1025 mutex_lock(&priv->shrd->mutex);
1026
1027 if (iwl_is_associated_ctx(ctx)) {
1028 ret = 0;
1029 goto out;
1030 }
1031
1032 if (ctx->preauth_bssid || test_bit(STATUS_SCAN_HW,
1033 &priv->shrd->status)) {
1034 ret = -EBUSY;
1035 goto out;
1036 }
1037
1038 ret = iwl_add_station_common(priv, ctx, bssid, true, NULL, &sta_id);
1039 if (ret)
1040 goto out;
1041
1042 if (WARN_ON(sta_id != ctx->ap_sta_id)) {
1043 ret = -EIO;
1044 goto out_remove_sta;
1045 }
1046
1047 memcpy(ctx->bssid, bssid, ETH_ALEN);
1048 ctx->preauth_bssid = true;
1049
1050 ret = iwlagn_commit_rxon(priv, ctx);
1051
1052 if (ret == 0)
1053 goto out;
1054
1055 out_remove_sta:
1056 iwl_remove_station(priv, sta_id, bssid);
1057 out:
1058 mutex_unlock(&priv->shrd->mutex);
1059 IWL_DEBUG_MAC80211(priv, "leave\n");
1060
1061 return ret;
1062}
1063
1064static void iwlagn_mac_finish_tx_sync(struct ieee80211_hw *hw,
1065 struct ieee80211_vif *vif,
1066 const u8 *bssid,
1067 enum ieee80211_tx_sync_type type)
1068{
1069 struct iwl_priv *priv = hw->priv;
1070 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1071 struct iwl_rxon_context *ctx = vif_priv->ctx;
1072
5d22df20
JL		 1073 if (ctx->ctxid != IWL_RXON_CTX_PAN)
1074 return;
1075
7335613a
WYG		 1076 IWL_DEBUG_MAC80211(priv, "enter\n");
1077 mutex_lock(&priv->shrd->mutex);
1078
1079 if (iwl_is_associated_ctx(ctx))
1080 goto out;
1081
1082 iwl_remove_station(priv, ctx->ap_sta_id, bssid);
1083 ctx->preauth_bssid = false;
1084 /* no need to commit */
1085 out:
1086 mutex_unlock(&priv->shrd->mutex);
1087 IWL_DEBUG_MAC80211(priv, "leave\n");
1088}
1089
1090static void iwlagn_mac_rssi_callback(struct ieee80211_hw *hw,
1091 enum ieee80211_rssi_event rssi_event)
1092{
1093 struct iwl_priv *priv = hw->priv;
1094
1095 IWL_DEBUG_MAC80211(priv, "enter\n");
1096 mutex_lock(&priv->shrd->mutex);
1097
38622419
DF		 1098 if (cfg(priv)->bt_params &&
1099 cfg(priv)->bt_params->advanced_bt_coexist) {
7335613a
WYG		 1100 if (rssi_event == RSSI_EVENT_LOW)
1101 priv->bt_enable_pspoll = true;
1102 else if (rssi_event == RSSI_EVENT_HIGH)
1103 priv->bt_enable_pspoll = false;
1104
1105 iwlagn_send_advance_bt_config(priv);
1106 } else {
1107 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
1108 "ignoring RSSI callback\n");
1109 }
1110
1111 mutex_unlock(&priv->shrd->mutex);
1112 IWL_DEBUG_MAC80211(priv, "leave\n");
1113}
1114
1115static int iwlagn_mac_set_tim(struct ieee80211_hw *hw,
1116 struct ieee80211_sta *sta, bool set)
1117{
1118 struct iwl_priv *priv = hw->priv;
1119
1ee158d8 1120 queue_work(priv->workqueue, &priv->beacon_update);
7335613a
WYG		 1121
1122 return 0;
1123}
1124
0b7a4c78
WYG		 1125static int iwlagn_mac_conf_tx(struct ieee80211_hw *hw,
1126 struct ieee80211_vif *vif, u16 queue,
1127 const struct ieee80211_tx_queue_params *params)
1128{
1129 struct iwl_priv *priv = hw->priv;
1130 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1131 struct iwl_rxon_context *ctx = vif_priv->ctx;
1132 unsigned long flags;
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
1152 spin_lock_irqsave(&priv->shrd->lock, flags);
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
1164 spin_unlock_irqrestore(&priv->shrd->lock, flags);
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{
1172 struct iwl_priv *priv = hw->priv;
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
1192 lockdep_assert_held(&priv->shrd->mutex);
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{
1226 struct iwl_priv *priv = hw->priv;
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
1237 mutex_lock(&priv->shrd->mutex);
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:
1284 mutex_unlock(&priv->shrd->mutex);
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
1296 lockdep_assert_held(&priv->shrd->mutex);
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{
1323 struct iwl_priv *priv = hw->priv;
1324 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1325
1326 IWL_DEBUG_MAC80211(priv, "enter\n");
1327
1328 mutex_lock(&priv->shrd->mutex);
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
1341 mutex_unlock(&priv->shrd->mutex);
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{
1351 struct iwl_priv *priv = hw->priv;
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
1363 mutex_lock(&priv->shrd->mutex);
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:
1427 mutex_unlock(&priv->shrd->mutex);
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{
1437 struct iwl_priv *priv = hw->priv;
1438 int ret;
1439
1440 IWL_DEBUG_MAC80211(priv, "enter\n");
1441
1442 if (req->n_channels == 0)
1443 return -EINVAL;
1444
1445 mutex_lock(&priv->shrd->mutex);
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
1474 mutex_unlock(&priv->shrd->mutex);
1475
1476 return ret;
1477}
1478
76b29331
WYG		 1479static int iwlagn_mac_sta_remove(struct ieee80211_hw *hw,
1480 struct ieee80211_vif *vif,
1481 struct ieee80211_sta *sta)
1482{
1483 struct iwl_priv *priv = hw->priv;
1484 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
1485 int ret;
1486
1487 IWL_DEBUG_MAC80211(priv, "enter: received request to remove "
1488 "station %pM\n", sta->addr);
1489 mutex_lock(&priv->shrd->mutex);
1490 IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n",
1491 sta->addr);
1492 ret = iwl_remove_station(priv, sta_priv->sta_id, sta->addr);
1493 if (ret)
1494 IWL_DEBUG_QUIET_RFKILL(priv, "Error removing station %pM\n",
1495 sta->addr);
1496 mutex_unlock(&priv->shrd->mutex);
1497 IWL_DEBUG_MAC80211(priv, "leave\n");
1498
1499 return ret;
1500}
1501
1502static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1503{
1504 unsigned long flags;
1505
1506 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
1507 priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK;
1508 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1509 priv->stations[sta_id].sta.sta.modify_mask = 0;
1510 priv->stations[sta_id].sta.sleep_tx_count = 0;
1511 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1512 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1513 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
1514
1515}
1516
1517static void iwlagn_mac_sta_notify(struct ieee80211_hw *hw,
1518 struct ieee80211_vif *vif,
1519 enum sta_notify_cmd cmd,
1520 struct ieee80211_sta *sta)
1521{
1522 struct iwl_priv *priv = hw->priv;
1523 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
1524 int sta_id;
1525
1526 IWL_DEBUG_MAC80211(priv, "enter\n");
1527
1528 switch (cmd) {
1529 case STA_NOTIFY_SLEEP:
1530 WARN_ON(!sta_priv->client);
1531 sta_priv->asleep = true;
1532 if (atomic_read(&sta_priv->pending_frames) > 0)
1533 ieee80211_sta_block_awake(hw, sta, true);
1534 break;
1535 case STA_NOTIFY_AWAKE:
1536 WARN_ON(!sta_priv->client);
1537 if (!sta_priv->asleep)
1538 break;
1539 sta_priv->asleep = false;
1540 sta_id = iwl_sta_id(sta);
1541 if (sta_id != IWL_INVALID_STATION)
1542 iwl_sta_modify_ps_wake(priv, sta_id);
1543 break;
1544 default:
1545 break;
1546 }
1547 IWL_DEBUG_MAC80211(priv, "leave\n");
1548}
1549
7335613a
WYG		 1550struct ieee80211_ops iwlagn_hw_ops = {
1551 .tx = iwlagn_mac_tx,
1552 .start = iwlagn_mac_start,
1553 .stop = iwlagn_mac_stop,
1554#ifdef CONFIG_PM_SLEEP
1555 .suspend = iwlagn_mac_suspend,
1556 .resume = iwlagn_mac_resume,
1557#endif
1558 .add_interface = iwlagn_mac_add_interface,
1559 .remove_interface = iwlagn_mac_remove_interface,
1560 .change_interface = iwlagn_mac_change_interface,
1561 .config = iwlagn_mac_config,
1562 .configure_filter = iwlagn_configure_filter,
1563 .set_key = iwlagn_mac_set_key,
1564 .update_tkip_key = iwlagn_mac_update_tkip_key,
1565 .set_rekey_data = iwlagn_mac_set_rekey_data,
1566 .conf_tx = iwlagn_mac_conf_tx,
1567 .bss_info_changed = iwlagn_bss_info_changed,
1568 .ampdu_action = iwlagn_mac_ampdu_action,
1569 .hw_scan = iwlagn_mac_hw_scan,
1570 .sta_notify = iwlagn_mac_sta_notify,
1571 .sta_add = iwlagn_mac_sta_add,
1572 .sta_remove = iwlagn_mac_sta_remove,
1573 .channel_switch = iwlagn_mac_channel_switch,
1574 .flush = iwlagn_mac_flush,
1575 .tx_last_beacon = iwlagn_mac_tx_last_beacon,
1576 .remain_on_channel = iwlagn_mac_remain_on_channel,
1577 .cancel_remain_on_channel = iwlagn_mac_cancel_remain_on_channel,
1578 .rssi_callback = iwlagn_mac_rssi_callback,
1579 CFG80211_TESTMODE_CMD(iwlagn_mac_testmode_cmd)
1580 CFG80211_TESTMODE_DUMP(iwlagn_mac_testmode_dump)
1581 .tx_sync = iwlagn_mac_tx_sync,
1582 .finish_tx_sync = iwlagn_mac_finish_tx_sync,
1583 .set_tim = iwlagn_mac_set_tim,
1584};
1585
1586/* This function both allocates and initializes hw and priv. */
1587struct ieee80211_hw *iwl_alloc_all(void)
1588{
1589 struct iwl_priv *priv;
1590 /* mac80211 allocates memory for this device instance, including
1591 * space for this driver's private structure */
1592 struct ieee80211_hw *hw;
1593
1594 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwlagn_hw_ops);
1595 if (!hw)
1596 goto out;
1597
1598 priv = hw->priv;
1599 priv->hw = hw;
1600
1601out:
1602 return hw;
1603}
Linux 6.x block layer and io_uring tree(s)