aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/iwlwifi/dvm/mac80211.c
diff options
context:
space:
mode:
authorJohannes Berg <johannes.berg@intel.com>2012-05-15 06:16:34 -0400
committerJohannes Berg <johannes.berg@intel.com>2012-06-06 07:21:14 -0400
commit1023fdc4858b6b8cb88ff28cafd425b77555be9f (patch)
tree16571db8e1a8c8be475b50513a3af33c3583bfc4 /drivers/net/wireless/iwlwifi/dvm/mac80211.c
parent20041ea622fcb1992df536d253de5120808e64a5 (diff)
iwlwifi: move DVM code into subdirectory
Since we're working on another mode/driver inside iwlwifi, move the current one into a subdirectory to more cleanly separate the code. While at it, rename all the files. Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/dvm/mac80211.c')
-rw-r--r--drivers/net/wireless/iwlwifi/dvm/mac80211.c1631
1 files changed, 1631 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/dvm/mac80211.c b/drivers/net/wireless/iwlwifi/dvm/mac80211.c
new file mode 100644
index 000000000000..33603c5a24a8
--- /dev/null
+++ b/drivers/net/wireless/iwlwifi/dvm/mac80211.c
@@ -0,0 +1,1631 @@
1/******************************************************************************
2 *
3 * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29#include <linux/kernel.h>
30#include <linux/module.h>
31#include <linux/init.h>
32#include <linux/slab.h>
33#include <linux/dma-mapping.h>
34#include <linux/delay.h>
35#include <linux/sched.h>
36#include <linux/skbuff.h>
37#include <linux/netdevice.h>
38#include <linux/etherdevice.h>
39#include <linux/if_arp.h>
40
41#include <net/ieee80211_radiotap.h>
42#include <net/mac80211.h>
43
44#include <asm/div64.h>
45
46#include "iwl-io.h"
47#include "iwl-trans.h"
48#include "iwl-op-mode.h"
49#include "iwl-modparams.h"
50
51#include "eeprom.h"
52#include "dev.h"
53#include "calib.h"
54#include "agn.h"
55
56/*****************************************************************************
57 *
58 * mac80211 entry point functions
59 *
60 *****************************************************************************/
61
62static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
63 {
64 .max = 1,
65 .types = BIT(NL80211_IFTYPE_STATION),
66 },
67 {
68 .max = 1,
69 .types = BIT(NL80211_IFTYPE_AP),
70 },
71};
72
73static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
74 {
75 .max = 2,
76 .types = BIT(NL80211_IFTYPE_STATION),
77 },
78};
79
80static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
81 {
82 .max = 1,
83 .types = BIT(NL80211_IFTYPE_STATION),
84 },
85 {
86 .max = 1,
87 .types = BIT(NL80211_IFTYPE_P2P_GO) |
88 BIT(NL80211_IFTYPE_AP),
89 },
90};
91
92static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
93 {
94 .max = 2,
95 .types = BIT(NL80211_IFTYPE_STATION),
96 },
97 {
98 .max = 1,
99 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
100 },
101};
102
103static const struct ieee80211_iface_combination
104iwlagn_iface_combinations_dualmode[] = {
105 { .num_different_channels = 1,
106 .max_interfaces = 2,
107 .beacon_int_infra_match = true,
108 .limits = iwlagn_sta_ap_limits,
109 .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
110 },
111 { .num_different_channels = 1,
112 .max_interfaces = 2,
113 .limits = iwlagn_2sta_limits,
114 .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
115 },
116};
117
118static const struct ieee80211_iface_combination
119iwlagn_iface_combinations_p2p[] = {
120 { .num_different_channels = 1,
121 .max_interfaces = 2,
122 .beacon_int_infra_match = true,
123 .limits = iwlagn_p2p_sta_go_limits,
124 .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
125 },
126 { .num_different_channels = 1,
127 .max_interfaces = 2,
128 .limits = iwlagn_p2p_2sta_limits,
129 .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
130 },
131};
132
133/*
134 * Not a mac80211 entry point function, but it fits in with all the
135 * other mac80211 functions grouped here.
136 */
137int iwlagn_mac_setup_register(struct iwl_priv *priv,
138 const struct iwl_ucode_capabilities *capa)
139{
140 int ret;
141 struct ieee80211_hw *hw = priv->hw;
142 struct iwl_rxon_context *ctx;
143
144 hw->rate_control_algorithm = "iwl-agn-rs";
145
146 /* Tell mac80211 our characteristics */
147 hw->flags = IEEE80211_HW_SIGNAL_DBM |
148 IEEE80211_HW_AMPDU_AGGREGATION |
149 IEEE80211_HW_NEED_DTIM_PERIOD |
150 IEEE80211_HW_SPECTRUM_MGMT |
151 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
152 IEEE80211_HW_QUEUE_CONTROL |
153 IEEE80211_HW_SUPPORTS_PS |
154 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
155 IEEE80211_HW_WANT_MONITOR_VIF |
156 IEEE80211_HW_SCAN_WHILE_IDLE;
157
158 hw->offchannel_tx_hw_queue = IWL_AUX_QUEUE;
159 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FMT;
160
161 /*
162 * Including the following line will crash some AP's. This
163 * workaround removes the stimulus which causes the crash until
164 * the AP software can be fixed.
165 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
166 */
167
168 if (priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE)
169 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
170 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
171
172#ifndef CONFIG_IWLWIFI_EXPERIMENTAL_MFP
173 /* enable 11w if the uCode advertise */
174 if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
175#endif /* !CONFIG_IWLWIFI_EXPERIMENTAL_MFP */
176 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
177
178 hw->sta_data_size = sizeof(struct iwl_station_priv);
179 hw->vif_data_size = sizeof(struct iwl_vif_priv);
180
181 for_each_context(priv, ctx) {
182 hw->wiphy->interface_modes |= ctx->interface_modes;
183 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
184 }
185
186 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
187
188 if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
189 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
190 hw->wiphy->n_iface_combinations =
191 ARRAY_SIZE(iwlagn_iface_combinations_p2p);
192 } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
193 hw->wiphy->iface_combinations =
194 iwlagn_iface_combinations_dualmode;
195 hw->wiphy->n_iface_combinations =
196 ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
197 }
198
199 hw->wiphy->max_remain_on_channel_duration = 1000;
200
201 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
202 WIPHY_FLAG_DISABLE_BEACON_HINTS |
203 WIPHY_FLAG_IBSS_RSN;
204
205 if (priv->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
206 priv->trans->ops->wowlan_suspend &&
207 device_can_wakeup(priv->trans->dev)) {
208 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
209 WIPHY_WOWLAN_DISCONNECT |
210 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
211 WIPHY_WOWLAN_RFKILL_RELEASE;
212 if (!iwlwifi_mod_params.sw_crypto)
213 hw->wiphy->wowlan.flags |=
214 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
215 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
216
217 hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
218 hw->wiphy->wowlan.pattern_min_len =
219 IWLAGN_WOWLAN_MIN_PATTERN_LEN;
220 hw->wiphy->wowlan.pattern_max_len =
221 IWLAGN_WOWLAN_MAX_PATTERN_LEN;
222 }
223
224 if (iwlwifi_mod_params.power_save)
225 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
226 else
227 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
228
229 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
230 /* we create the 802.11 header and a max-length SSID element */
231 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 34;
232
233 /*
234 * We don't use all queues: 4 and 9 are unused and any
235 * aggregation queue gets mapped down to the AC queue.
236 */
237 hw->queues = IWLAGN_FIRST_AMPDU_QUEUE;
238
239 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
240
241 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
242 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
243 &priv->bands[IEEE80211_BAND_2GHZ];
244 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
245 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
246 &priv->bands[IEEE80211_BAND_5GHZ];
247
248 hw->wiphy->hw_version = priv->trans->hw_id;
249
250 iwl_leds_init(priv);
251
252 ret = ieee80211_register_hw(priv->hw);
253 if (ret) {
254 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
255 return ret;
256 }
257 priv->mac80211_registered = 1;
258
259 return 0;
260}
261
262void iwlagn_mac_unregister(struct iwl_priv *priv)
263{
264 if (!priv->mac80211_registered)
265 return;
266 iwl_leds_exit(priv);
267 ieee80211_unregister_hw(priv->hw);
268 priv->mac80211_registered = 0;
269}
270
271static int __iwl_up(struct iwl_priv *priv)
272{
273 struct iwl_rxon_context *ctx;
274 int ret;
275
276 lockdep_assert_held(&priv->mutex);
277
278 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
279 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
280 return -EIO;
281 }
282
283 for_each_context(priv, ctx) {
284 ret = iwlagn_alloc_bcast_station(priv, ctx);
285 if (ret) {
286 iwl_dealloc_bcast_stations(priv);
287 return ret;
288 }
289 }
290
291 ret = iwl_run_init_ucode(priv);
292 if (ret) {
293 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
294 goto error;
295 }
296
297 ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_REGULAR);
298 if (ret) {
299 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
300 goto error;
301 }
302
303 ret = iwl_alive_start(priv);
304 if (ret)
305 goto error;
306 return 0;
307
308 error:
309 set_bit(STATUS_EXIT_PENDING, &priv->status);
310 iwl_down(priv);
311 clear_bit(STATUS_EXIT_PENDING, &priv->status);
312
313 IWL_ERR(priv, "Unable to initialize device.\n");
314 return ret;
315}
316
317static int iwlagn_mac_start(struct ieee80211_hw *hw)
318{
319 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
320 int ret;
321
322 IWL_DEBUG_MAC80211(priv, "enter\n");
323
324 /* we should be verifying the device is ready to be opened */
325 mutex_lock(&priv->mutex);
326 ret = __iwl_up(priv);
327 mutex_unlock(&priv->mutex);
328 if (ret)
329 return ret;
330
331 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
332
333 /* Now we should be done, and the READY bit should be set. */
334 if (WARN_ON(!test_bit(STATUS_READY, &priv->status)))
335 ret = -EIO;
336
337 iwlagn_led_enable(priv);
338
339 priv->is_open = 1;
340 IWL_DEBUG_MAC80211(priv, "leave\n");
341 return 0;
342}
343
344static void iwlagn_mac_stop(struct ieee80211_hw *hw)
345{
346 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
347
348 IWL_DEBUG_MAC80211(priv, "enter\n");
349
350 if (!priv->is_open)
351 return;
352
353 priv->is_open = 0;
354
355 mutex_lock(&priv->mutex);
356 iwl_down(priv);
357 mutex_unlock(&priv->mutex);
358
359 iwl_cancel_deferred_work(priv);
360
361 flush_workqueue(priv->workqueue);
362
363 /* User space software may expect getting rfkill changes
364 * even if interface is down, trans->down will leave the RF
365 * kill interrupt enabled
366 */
367 iwl_trans_stop_hw(priv->trans, false);
368
369 IWL_DEBUG_MAC80211(priv, "leave\n");
370}
371
372static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
373 struct ieee80211_vif *vif,
374 struct cfg80211_gtk_rekey_data *data)
375{
376 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
377
378 if (iwlwifi_mod_params.sw_crypto)
379 return;
380
381 IWL_DEBUG_MAC80211(priv, "enter\n");
382 mutex_lock(&priv->mutex);
383
384 if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
385 goto out;
386
387 memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
388 memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
389 priv->replay_ctr =
390 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
391 priv->have_rekey_data = true;
392
393 out:
394 mutex_unlock(&priv->mutex);
395 IWL_DEBUG_MAC80211(priv, "leave\n");
396}
397
398#ifdef CONFIG_PM_SLEEP
399
400static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
401 struct cfg80211_wowlan *wowlan)
402{
403 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
404 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
405 int ret;
406
407 if (WARN_ON(!wowlan))
408 return -EINVAL;
409
410 IWL_DEBUG_MAC80211(priv, "enter\n");
411 mutex_lock(&priv->mutex);
412
413 /* Don't attempt WoWLAN when not associated, tear down instead. */
414 if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
415 !iwl_is_associated_ctx(ctx)) {
416 ret = 1;
417 goto out;
418 }
419
420 ret = iwlagn_suspend(priv, wowlan);
421 if (ret)
422 goto error;
423
424 iwl_trans_wowlan_suspend(priv->trans);
425
426 goto out;
427
428 error:
429 priv->wowlan = false;
430 iwlagn_prepare_restart(priv);
431 ieee80211_restart_hw(priv->hw);
432 out:
433 mutex_unlock(&priv->mutex);
434 IWL_DEBUG_MAC80211(priv, "leave\n");
435
436 return ret;
437}
438
439static int iwlagn_mac_resume(struct ieee80211_hw *hw)
440{
441 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
442 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
443 struct ieee80211_vif *vif;
444 unsigned long flags;
445 u32 base, status = 0xffffffff;
446 int ret = -EIO;
447
448 IWL_DEBUG_MAC80211(priv, "enter\n");
449 mutex_lock(&priv->mutex);
450
451 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
452 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
453
454 base = priv->device_pointers.error_event_table;
455 if (iwlagn_hw_valid_rtc_data_addr(base)) {
456 spin_lock_irqsave(&priv->trans->reg_lock, flags);
457 ret = iwl_grab_nic_access_silent(priv->trans);
458 if (likely(ret == 0)) {
459 iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, base);
460 status = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
461 iwl_release_nic_access(priv->trans);
462 }
463 spin_unlock_irqrestore(&priv->trans->reg_lock, flags);
464
465#ifdef CONFIG_IWLWIFI_DEBUGFS
466 if (ret == 0) {
467 const struct fw_img *img;
468
469 img = &(priv->fw->img[IWL_UCODE_WOWLAN]);
470 if (!priv->wowlan_sram) {
471 priv->wowlan_sram =
472 kzalloc(img->sec[IWL_UCODE_SECTION_DATA].len,
473 GFP_KERNEL);
474 }
475
476 if (priv->wowlan_sram)
477 _iwl_read_targ_mem_words(
478 priv->trans, 0x800000,
479 priv->wowlan_sram,
480 img->sec[IWL_UCODE_SECTION_DATA].len / 4);
481 }
482#endif
483 }
484
485 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
486 vif = ctx->vif;
487
488 priv->wowlan = false;
489
490 iwlagn_prepare_restart(priv);
491
492 memset((void *)&ctx->active, 0, sizeof(ctx->active));
493 iwl_connection_init_rx_config(priv, ctx);
494 iwlagn_set_rxon_chain(priv, ctx);
495
496 mutex_unlock(&priv->mutex);
497 IWL_DEBUG_MAC80211(priv, "leave\n");
498
499 ieee80211_resume_disconnect(vif);
500
501 return 1;
502}
503
504static void iwlagn_mac_set_wakeup(struct ieee80211_hw *hw, bool enabled)
505{
506 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
507
508 device_set_wakeup_enable(priv->trans->dev, enabled);
509}
510#endif
511
512static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
513{
514 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
515
516 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
517 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
518
519 if (iwlagn_tx_skb(priv, skb))
520 dev_kfree_skb_any(skb);
521}
522
523static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
524 struct ieee80211_vif *vif,
525 struct ieee80211_key_conf *keyconf,
526 struct ieee80211_sta *sta,
527 u32 iv32, u16 *phase1key)
528{
529 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
530
531 iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
532}
533
534static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
535 struct ieee80211_vif *vif,
536 struct ieee80211_sta *sta,
537 struct ieee80211_key_conf *key)
538{
539 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
540 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
541 struct iwl_rxon_context *ctx = vif_priv->ctx;
542 int ret;
543 bool is_default_wep_key = false;
544
545 IWL_DEBUG_MAC80211(priv, "enter\n");
546
547 if (iwlwifi_mod_params.sw_crypto) {
548 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
549 return -EOPNOTSUPP;
550 }
551
552 switch (key->cipher) {
553 case WLAN_CIPHER_SUITE_TKIP:
554 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
555 /* fall through */
556 case WLAN_CIPHER_SUITE_CCMP:
557 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
558 break;
559 default:
560 break;
561 }
562
563 /*
564 * We could program these keys into the hardware as well, but we
565 * don't expect much multicast traffic in IBSS and having keys
566 * for more stations is probably more useful.
567 *
568 * Mark key TX-only and return 0.
569 */
570 if (vif->type == NL80211_IFTYPE_ADHOC &&
571 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
572 key->hw_key_idx = WEP_INVALID_OFFSET;
573 return 0;
574 }
575
576 /* If they key was TX-only, accept deletion */
577 if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
578 return 0;
579
580 mutex_lock(&priv->mutex);
581 iwl_scan_cancel_timeout(priv, 100);
582
583 BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
584
585 /*
586 * If we are getting WEP group key and we didn't receive any key mapping
587 * so far, we are in legacy wep mode (group key only), otherwise we are
588 * in 1X mode.
589 * In legacy wep mode, we use another host command to the uCode.
590 */
591 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
592 key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
593 if (cmd == SET_KEY)
594 is_default_wep_key = !ctx->key_mapping_keys;
595 else
596 is_default_wep_key =
597 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
598 }
599
600
601 switch (cmd) {
602 case SET_KEY:
603 if (is_default_wep_key) {
604 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
605 break;
606 }
607 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
608 if (ret) {
609 /*
610 * can't add key for RX, but we don't need it
611 * in the device for TX so still return 0
612 */
613 ret = 0;
614 key->hw_key_idx = WEP_INVALID_OFFSET;
615 }
616
617 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
618 break;
619 case DISABLE_KEY:
620 if (is_default_wep_key)
621 ret = iwl_remove_default_wep_key(priv, ctx, key);
622 else
623 ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
624
625 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
626 break;
627 default:
628 ret = -EINVAL;
629 }
630
631 mutex_unlock(&priv->mutex);
632 IWL_DEBUG_MAC80211(priv, "leave\n");
633
634 return ret;
635}
636
637static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
638 struct ieee80211_vif *vif,
639 enum ieee80211_ampdu_mlme_action action,
640 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
641 u8 buf_size)
642{
643 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
644 int ret = -EINVAL;
645 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
646
647 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
648 sta->addr, tid);
649
650 if (!(priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE))
651 return -EACCES;
652
653 IWL_DEBUG_MAC80211(priv, "enter\n");
654 mutex_lock(&priv->mutex);
655
656 switch (action) {
657 case IEEE80211_AMPDU_RX_START:
658 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
659 break;
660 IWL_DEBUG_HT(priv, "start Rx\n");
661 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
662 break;
663 case IEEE80211_AMPDU_RX_STOP:
664 IWL_DEBUG_HT(priv, "stop Rx\n");
665 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
666 break;
667 case IEEE80211_AMPDU_TX_START:
668 if (!priv->trans->ops->tx_agg_setup)
669 break;
670 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
671 break;
672 IWL_DEBUG_HT(priv, "start Tx\n");
673 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
674 break;
675 case IEEE80211_AMPDU_TX_STOP:
676 IWL_DEBUG_HT(priv, "stop Tx\n");
677 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
678 if ((ret == 0) && (priv->agg_tids_count > 0)) {
679 priv->agg_tids_count--;
680 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
681 priv->agg_tids_count);
682 }
683 if (!priv->agg_tids_count &&
684 priv->hw_params.use_rts_for_aggregation) {
685 /*
686 * switch off RTS/CTS if it was previously enabled
687 */
688 sta_priv->lq_sta.lq.general_params.flags &=
689 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
690 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
691 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
692 }
693 break;
694 case IEEE80211_AMPDU_TX_OPERATIONAL:
695 ret = iwlagn_tx_agg_oper(priv, vif, sta, tid, buf_size);
696 break;
697 }
698 mutex_unlock(&priv->mutex);
699 IWL_DEBUG_MAC80211(priv, "leave\n");
700 return ret;
701}
702
703static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
704 struct ieee80211_vif *vif,
705 struct ieee80211_sta *sta)
706{
707 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
708 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
709 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
710 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
711 int ret;
712 u8 sta_id;
713
714 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
715 sta->addr);
716 sta_priv->sta_id = IWL_INVALID_STATION;
717
718 atomic_set(&sta_priv->pending_frames, 0);
719 if (vif->type == NL80211_IFTYPE_AP)
720 sta_priv->client = true;
721
722 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
723 is_ap, sta, &sta_id);
724 if (ret) {
725 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
726 sta->addr, ret);
727 /* Should we return success if return code is EEXIST ? */
728 return ret;
729 }
730
731 sta_priv->sta_id = sta_id;
732
733 return 0;
734}
735
736static int iwlagn_mac_sta_remove(struct ieee80211_hw *hw,
737 struct ieee80211_vif *vif,
738 struct ieee80211_sta *sta)
739{
740 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
741 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
742 int ret;
743
744 IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n", sta->addr);
745
746 if (vif->type == NL80211_IFTYPE_STATION) {
747 /*
748 * Station will be removed from device when the RXON
749 * is set to unassociated -- just deactivate it here
750 * to avoid re-programming it.
751 */
752 ret = 0;
753 iwl_deactivate_station(priv, sta_priv->sta_id, sta->addr);
754 } else {
755 ret = iwl_remove_station(priv, sta_priv->sta_id, sta->addr);
756 if (ret)
757 IWL_DEBUG_QUIET_RFKILL(priv,
758 "Error removing station %pM\n", sta->addr);
759 }
760 return ret;
761}
762
763static int iwlagn_mac_sta_state(struct ieee80211_hw *hw,
764 struct ieee80211_vif *vif,
765 struct ieee80211_sta *sta,
766 enum ieee80211_sta_state old_state,
767 enum ieee80211_sta_state new_state)
768{
769 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
770 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
771 enum {
772 NONE, ADD, REMOVE, HT_RATE_INIT, ADD_RATE_INIT,
773 } op = NONE;
774 int ret;
775
776 IWL_DEBUG_MAC80211(priv, "station %pM state change %d->%d\n",
777 sta->addr, old_state, new_state);
778
779 mutex_lock(&priv->mutex);
780 if (vif->type == NL80211_IFTYPE_STATION) {
781 if (old_state == IEEE80211_STA_NOTEXIST &&
782 new_state == IEEE80211_STA_NONE)
783 op = ADD;
784 else if (old_state == IEEE80211_STA_NONE &&
785 new_state == IEEE80211_STA_NOTEXIST)
786 op = REMOVE;
787 else if (old_state == IEEE80211_STA_AUTH &&
788 new_state == IEEE80211_STA_ASSOC)
789 op = HT_RATE_INIT;
790 } else {
791 if (old_state == IEEE80211_STA_AUTH &&
792 new_state == IEEE80211_STA_ASSOC)
793 op = ADD_RATE_INIT;
794 else if (old_state == IEEE80211_STA_ASSOC &&
795 new_state == IEEE80211_STA_AUTH)
796 op = REMOVE;
797 }
798
799 switch (op) {
800 case ADD:
801 ret = iwlagn_mac_sta_add(hw, vif, sta);
802 break;
803 case REMOVE:
804 ret = iwlagn_mac_sta_remove(hw, vif, sta);
805 break;
806 case ADD_RATE_INIT:
807 ret = iwlagn_mac_sta_add(hw, vif, sta);
808 if (ret)
809 break;
810 /* Initialize rate scaling */
811 IWL_DEBUG_INFO(priv,
812 "Initializing rate scaling for station %pM\n",
813 sta->addr);
814 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
815 ret = 0;
816 break;
817 case HT_RATE_INIT:
818 /* Initialize rate scaling */
819 ret = iwl_sta_update_ht(priv, vif_priv->ctx, sta);
820 if (ret)
821 break;
822 IWL_DEBUG_INFO(priv,
823 "Initializing rate scaling for station %pM\n",
824 sta->addr);
825 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
826 ret = 0;
827 break;
828 default:
829 ret = 0;
830 break;
831 }
832
833 /*
834 * mac80211 might WARN if we fail, but due the way we
835 * (badly) handle hard rfkill, we might fail here
836 */
837 if (iwl_is_rfkill(priv))
838 ret = 0;
839
840 mutex_unlock(&priv->mutex);
841 IWL_DEBUG_MAC80211(priv, "leave\n");
842
843 return ret;
844}
845
846static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
847 struct ieee80211_channel_switch *ch_switch)
848{
849 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
850 struct ieee80211_conf *conf = &hw->conf;
851 struct ieee80211_channel *channel = ch_switch->channel;
852 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
853 /*
854 * MULTI-FIXME
855 * When we add support for multiple interfaces, we need to
856 * revisit this. The channel switch command in the device
857 * only affects the BSS context, but what does that really
858 * mean? And what if we get a CSA on the second interface?
859 * This needs a lot of work.
860 */
861 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
862 u16 ch;
863
864 IWL_DEBUG_MAC80211(priv, "enter\n");
865
866 mutex_lock(&priv->mutex);
867
868 if (iwl_is_rfkill(priv))
869 goto out;
870
871 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
872 test_bit(STATUS_SCANNING, &priv->status) ||
873 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
874 goto out;
875
876 if (!iwl_is_associated_ctx(ctx))
877 goto out;
878
879 if (!priv->lib->set_channel_switch)
880 goto out;
881
882 ch = channel->hw_value;
883 if (le16_to_cpu(ctx->active.channel) == ch)
884 goto out;
885
886 priv->current_ht_config.smps = conf->smps_mode;
887
888 /* Configure HT40 channels */
889 ctx->ht.enabled = conf_is_ht(conf);
890 if (ctx->ht.enabled)
891 iwlagn_config_ht40(conf, ctx);
892 else
893 ctx->ht.is_40mhz = false;
894
895 if ((le16_to_cpu(ctx->staging.channel) != ch))
896 ctx->staging.flags = 0;
897
898 iwl_set_rxon_channel(priv, channel, ctx);
899 iwl_set_rxon_ht(priv, ht_conf);
900 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
901
902 /*
903 * at this point, staging_rxon has the
904 * configuration for channel switch
905 */
906 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
907 priv->switch_channel = cpu_to_le16(ch);
908 if (priv->lib->set_channel_switch(priv, ch_switch)) {
909 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
910 priv->switch_channel = 0;
911 ieee80211_chswitch_done(ctx->vif, false);
912 }
913
914out:
915 mutex_unlock(&priv->mutex);
916 IWL_DEBUG_MAC80211(priv, "leave\n");
917}
918
919void iwl_chswitch_done(struct iwl_priv *priv, bool is_success)
920{
921 /*
922 * MULTI-FIXME
923 * See iwlagn_mac_channel_switch.
924 */
925 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
926
927 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
928 return;
929
930 if (test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
931 ieee80211_chswitch_done(ctx->vif, is_success);
932}
933
934static void iwlagn_configure_filter(struct ieee80211_hw *hw,
935 unsigned int changed_flags,
936 unsigned int *total_flags,
937 u64 multicast)
938{
939 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
940 __le32 filter_or = 0, filter_nand = 0;
941 struct iwl_rxon_context *ctx;
942
943#define CHK(test, flag) do { \
944 if (*total_flags & (test)) \
945 filter_or |= (flag); \
946 else \
947 filter_nand |= (flag); \
948 } while (0)
949
950 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
951 changed_flags, *total_flags);
952
953 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
954 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
955 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
956 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
957
958#undef CHK
959
960 mutex_lock(&priv->mutex);
961
962 for_each_context(priv, ctx) {
963 ctx->staging.filter_flags &= ~filter_nand;
964 ctx->staging.filter_flags |= filter_or;
965
966 /*
967 * Not committing directly because hardware can perform a scan,
968 * but we'll eventually commit the filter flags change anyway.
969 */
970 }
971
972 mutex_unlock(&priv->mutex);
973
974 /*
975 * Receiving all multicast frames is always enabled by the
976 * default flags setup in iwl_connection_init_rx_config()
977 * since we currently do not support programming multicast
978 * filters into the device.
979 */
980 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
981 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
982}
983
984static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
985{
986 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
987
988 mutex_lock(&priv->mutex);
989 IWL_DEBUG_MAC80211(priv, "enter\n");
990
991 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
992 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
993 goto done;
994 }
995 if (iwl_is_rfkill(priv)) {
996 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
997 goto done;
998 }
999
1000 /*
1001 * mac80211 will not push any more frames for transmit
1002 * until the flush is completed
1003 */
1004 if (drop) {
1005 IWL_DEBUG_MAC80211(priv, "send flush command\n");
1006 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
1007 IWL_ERR(priv, "flush request fail\n");
1008 goto done;
1009 }
1010 }
1011 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
1012 iwl_trans_wait_tx_queue_empty(priv->trans);
1013done:
1014 mutex_unlock(&priv->mutex);
1015 IWL_DEBUG_MAC80211(priv, "leave\n");
1016}
1017
1018static int iwlagn_mac_remain_on_channel(struct ieee80211_hw *hw,
1019 struct ieee80211_channel *channel,
1020 enum nl80211_channel_type channel_type,
1021 int duration)
1022{
1023 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1024 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1025 int err = 0;
1026
1027 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
1028 return -EOPNOTSUPP;
1029
1030 if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
1031 return -EOPNOTSUPP;
1032
1033 IWL_DEBUG_MAC80211(priv, "enter\n");
1034 mutex_lock(&priv->mutex);
1035
1036 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
1037 err = -EBUSY;
1038 goto out;
1039 }
1040
1041 priv->hw_roc_channel = channel;
1042 priv->hw_roc_chantype = channel_type;
1043 /* convert from ms to TU */
1044 priv->hw_roc_duration = DIV_ROUND_UP(1000 * duration, 1024);
1045 priv->hw_roc_start_notified = false;
1046 cancel_delayed_work(&priv->hw_roc_disable_work);
1047
1048 if (!ctx->is_active) {
1049 static const struct iwl_qos_info default_qos_data = {
1050 .def_qos_parm = {
1051 .ac[0] = {
1052 .cw_min = cpu_to_le16(3),
1053 .cw_max = cpu_to_le16(7),
1054 .aifsn = 2,
1055 .edca_txop = cpu_to_le16(1504),
1056 },
1057 .ac[1] = {
1058 .cw_min = cpu_to_le16(7),
1059 .cw_max = cpu_to_le16(15),
1060 .aifsn = 2,
1061 .edca_txop = cpu_to_le16(3008),
1062 },
1063 .ac[2] = {
1064 .cw_min = cpu_to_le16(15),
1065 .cw_max = cpu_to_le16(1023),
1066 .aifsn = 3,
1067 },
1068 .ac[3] = {
1069 .cw_min = cpu_to_le16(15),
1070 .cw_max = cpu_to_le16(1023),
1071 .aifsn = 7,
1072 },
1073 },
1074 };
1075
1076 ctx->is_active = true;
1077 ctx->qos_data = default_qos_data;
1078 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1079 memcpy(ctx->staging.node_addr,
1080 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
1081 ETH_ALEN);
1082 memcpy(ctx->staging.bssid_addr,
1083 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
1084 ETH_ALEN);
1085 err = iwlagn_commit_rxon(priv, ctx);
1086 if (err)
1087 goto out;
1088 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
1089 RXON_FILTER_PROMISC_MSK |
1090 RXON_FILTER_CTL2HOST_MSK;
1091
1092 err = iwlagn_commit_rxon(priv, ctx);
1093 if (err) {
1094 iwlagn_disable_roc(priv);
1095 goto out;
1096 }
1097 priv->hw_roc_setup = true;
1098 }
1099
1100 err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
1101 if (err)
1102 iwlagn_disable_roc(priv);
1103
1104 out:
1105 mutex_unlock(&priv->mutex);
1106 IWL_DEBUG_MAC80211(priv, "leave\n");
1107
1108 return err;
1109}
1110
1111static int iwlagn_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
1112{
1113 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1114
1115 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
1116 return -EOPNOTSUPP;
1117
1118 IWL_DEBUG_MAC80211(priv, "enter\n");
1119 mutex_lock(&priv->mutex);
1120 iwl_scan_cancel_timeout(priv, priv->hw_roc_duration);
1121 iwlagn_disable_roc(priv);
1122 mutex_unlock(&priv->mutex);
1123 IWL_DEBUG_MAC80211(priv, "leave\n");
1124
1125 return 0;
1126}
1127
1128static void iwlagn_mac_rssi_callback(struct ieee80211_hw *hw,
1129 enum ieee80211_rssi_event rssi_event)
1130{
1131 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1132
1133 IWL_DEBUG_MAC80211(priv, "enter\n");
1134 mutex_lock(&priv->mutex);
1135
1136 if (priv->cfg->bt_params &&
1137 priv->cfg->bt_params->advanced_bt_coexist) {
1138 if (rssi_event == RSSI_EVENT_LOW)
1139 priv->bt_enable_pspoll = true;
1140 else if (rssi_event == RSSI_EVENT_HIGH)
1141 priv->bt_enable_pspoll = false;
1142
1143 iwlagn_send_advance_bt_config(priv);
1144 } else {
1145 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
1146 "ignoring RSSI callback\n");
1147 }
1148
1149 mutex_unlock(&priv->mutex);
1150 IWL_DEBUG_MAC80211(priv, "leave\n");
1151}
1152
1153static int iwlagn_mac_set_tim(struct ieee80211_hw *hw,
1154 struct ieee80211_sta *sta, bool set)
1155{
1156 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1157
1158 queue_work(priv->workqueue, &priv->beacon_update);
1159
1160 return 0;
1161}
1162
1163static int iwlagn_mac_conf_tx(struct ieee80211_hw *hw,
1164 struct ieee80211_vif *vif, u16 queue,
1165 const struct ieee80211_tx_queue_params *params)
1166{
1167 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1168 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1169 struct iwl_rxon_context *ctx = vif_priv->ctx;
1170 int q;
1171
1172 if (WARN_ON(!ctx))
1173 return -EINVAL;
1174
1175 IWL_DEBUG_MAC80211(priv, "enter\n");
1176
1177 if (!iwl_is_ready_rf(priv)) {
1178 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
1179 return -EIO;
1180 }
1181
1182 if (queue >= AC_NUM) {
1183 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
1184 return 0;
1185 }
1186
1187 q = AC_NUM - 1 - queue;
1188
1189 mutex_lock(&priv->mutex);
1190
1191 ctx->qos_data.def_qos_parm.ac[q].cw_min =
1192 cpu_to_le16(params->cw_min);
1193 ctx->qos_data.def_qos_parm.ac[q].cw_max =
1194 cpu_to_le16(params->cw_max);
1195 ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
1196 ctx->qos_data.def_qos_parm.ac[q].edca_txop =
1197 cpu_to_le16((params->txop * 32));
1198
1199 ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0;
1200
1201 mutex_unlock(&priv->mutex);
1202
1203 IWL_DEBUG_MAC80211(priv, "leave\n");
1204 return 0;
1205}
1206
1207static int iwlagn_mac_tx_last_beacon(struct ieee80211_hw *hw)
1208{
1209 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1210
1211 return priv->ibss_manager == IWL_IBSS_MANAGER;
1212}
1213
1214static int iwl_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
1215{
1216 iwl_connection_init_rx_config(priv, ctx);
1217
1218 iwlagn_set_rxon_chain(priv, ctx);
1219
1220 return iwlagn_commit_rxon(priv, ctx);
1221}
1222
1223static int iwl_setup_interface(struct iwl_priv *priv,
1224 struct iwl_rxon_context *ctx)
1225{
1226 struct ieee80211_vif *vif = ctx->vif;
1227 int err, ac;
1228
1229 lockdep_assert_held(&priv->mutex);
1230
1231 /*
1232 * This variable will be correct only when there's just
1233 * a single context, but all code using it is for hardware
1234 * that supports only one context.
1235 */
1236 priv->iw_mode = vif->type;
1237
1238 ctx->is_active = true;
1239
1240 err = iwl_set_mode(priv, ctx);
1241 if (err) {
1242 if (!ctx->always_active)
1243 ctx->is_active = false;
1244 return err;
1245 }
1246
1247 if (priv->cfg->bt_params && priv->cfg->bt_params->advanced_bt_coexist &&
1248 vif->type == NL80211_IFTYPE_ADHOC) {
1249 /*
1250 * pretend to have high BT traffic as long as we
1251 * are operating in IBSS mode, as this will cause
1252 * the rate scaling etc. to behave as intended.
1253 */
1254 priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
1255 }
1256
1257 /* set up queue mappings */
1258 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
1259 vif->hw_queue[ac] = ctx->ac_to_queue[ac];
1260
1261 if (vif->type == NL80211_IFTYPE_AP)
1262 vif->cab_queue = ctx->mcast_queue;
1263 else
1264 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
1265
1266 return 0;
1267}
1268
1269static int iwlagn_mac_add_interface(struct ieee80211_hw *hw,
1270 struct ieee80211_vif *vif)
1271{
1272 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1273 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1274 struct iwl_rxon_context *tmp, *ctx = NULL;
1275 int err;
1276 enum nl80211_iftype viftype = ieee80211_vif_type_p2p(vif);
1277 bool reset = false;
1278
1279 IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n",
1280 viftype, vif->addr);
1281
1282 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1283
1284 mutex_lock(&priv->mutex);
1285
1286 iwlagn_disable_roc(priv);
1287
1288 if (!iwl_is_ready_rf(priv)) {
1289 IWL_WARN(priv, "Try to add interface when device not ready\n");
1290 err = -EINVAL;
1291 goto out;
1292 }
1293
1294 for_each_context(priv, tmp) {
1295 u32 possible_modes =
1296 tmp->interface_modes | tmp->exclusive_interface_modes;
1297
1298 if (tmp->vif) {
1299 /* On reset we need to add the same interface again */
1300 if (tmp->vif == vif) {
1301 reset = true;
1302 ctx = tmp;
1303 break;
1304 }
1305
1306 /* check if this busy context is exclusive */
1307 if (tmp->exclusive_interface_modes &
1308 BIT(tmp->vif->type)) {
1309 err = -EINVAL;
1310 goto out;
1311 }
1312 continue;
1313 }
1314
1315 if (!(possible_modes & BIT(viftype)))
1316 continue;
1317
1318 /* have maybe usable context w/o interface */
1319 ctx = tmp;
1320 break;
1321 }
1322
1323 if (!ctx) {
1324 err = -EOPNOTSUPP;
1325 goto out;
1326 }
1327
1328 vif_priv->ctx = ctx;
1329 ctx->vif = vif;
1330
1331 err = iwl_setup_interface(priv, ctx);
1332 if (!err || reset)
1333 goto out;
1334
1335 ctx->vif = NULL;
1336 priv->iw_mode = NL80211_IFTYPE_STATION;
1337 out:
1338 mutex_unlock(&priv->mutex);
1339
1340 IWL_DEBUG_MAC80211(priv, "leave\n");
1341 return err;
1342}
1343
1344static void iwl_teardown_interface(struct iwl_priv *priv,
1345 struct ieee80211_vif *vif,
1346 bool mode_change)
1347{
1348 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1349
1350 lockdep_assert_held(&priv->mutex);
1351
1352 if (priv->scan_vif == vif) {
1353 iwl_scan_cancel_timeout(priv, 200);
1354 iwl_force_scan_end(priv);
1355 }
1356
1357 if (!mode_change) {
1358 iwl_set_mode(priv, ctx);
1359 if (!ctx->always_active)
1360 ctx->is_active = false;
1361 }
1362
1363 /*
1364 * When removing the IBSS interface, overwrite the
1365 * BT traffic load with the stored one from the last
1366 * notification, if any. If this is a device that
1367 * doesn't implement this, this has no effect since
1368 * both values are the same and zero.
1369 */
1370 if (vif->type == NL80211_IFTYPE_ADHOC)
1371 priv->bt_traffic_load = priv->last_bt_traffic_load;
1372}
1373
1374static void iwlagn_mac_remove_interface(struct ieee80211_hw *hw,
1375 struct ieee80211_vif *vif)
1376{
1377 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1378 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1379
1380 IWL_DEBUG_MAC80211(priv, "enter\n");
1381
1382 mutex_lock(&priv->mutex);
1383
1384 if (WARN_ON(ctx->vif != vif)) {
1385 struct iwl_rxon_context *tmp;
1386 IWL_ERR(priv, "ctx->vif = %p, vif = %p\n", ctx->vif, vif);
1387 for_each_context(priv, tmp)
1388 IWL_ERR(priv, "\tID = %d:\tctx = %p\tctx->vif = %p\n",
1389 tmp->ctxid, tmp, tmp->vif);
1390 }
1391 ctx->vif = NULL;
1392
1393 iwl_teardown_interface(priv, vif, false);
1394
1395 mutex_unlock(&priv->mutex);
1396
1397 IWL_DEBUG_MAC80211(priv, "leave\n");
1398
1399}
1400
1401static int iwlagn_mac_change_interface(struct ieee80211_hw *hw,
1402 struct ieee80211_vif *vif,
1403 enum nl80211_iftype newtype, bool newp2p)
1404{
1405 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1406 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1407 struct iwl_rxon_context *bss_ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1408 struct iwl_rxon_context *tmp;
1409 enum nl80211_iftype newviftype = newtype;
1410 u32 interface_modes;
1411 int err;
1412
1413 IWL_DEBUG_MAC80211(priv, "enter\n");
1414
1415 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1416
1417 mutex_lock(&priv->mutex);
1418
1419 if (!ctx->vif || !iwl_is_ready_rf(priv)) {
1420 /*
1421 * Huh? But wait ... this can maybe happen when
1422 * we're in the middle of a firmware restart!
1423 */
1424 err = -EBUSY;
1425 goto out;
1426 }
1427
1428 interface_modes = ctx->interface_modes | ctx->exclusive_interface_modes;
1429
1430 if (!(interface_modes & BIT(newtype))) {
1431 err = -EBUSY;
1432 goto out;
1433 }
1434
1435 /*
1436 * Refuse a change that should be done by moving from the PAN
1437 * context to the BSS context instead, if the BSS context is
1438 * available and can support the new interface type.
1439 */
1440 if (ctx->ctxid == IWL_RXON_CTX_PAN && !bss_ctx->vif &&
1441 (bss_ctx->interface_modes & BIT(newtype) ||
1442 bss_ctx->exclusive_interface_modes & BIT(newtype))) {
1443 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
1444 err = -EBUSY;
1445 goto out;
1446 }
1447
1448 if (ctx->exclusive_interface_modes & BIT(newtype)) {
1449 for_each_context(priv, tmp) {
1450 if (ctx == tmp)
1451 continue;
1452
1453 if (!tmp->vif)
1454 continue;
1455
1456 /*
1457 * The current mode switch would be exclusive, but
1458 * another context is active ... refuse the switch.
1459 */
1460 err = -EBUSY;
1461 goto out;
1462 }
1463 }
1464
1465 /* success */
1466 iwl_teardown_interface(priv, vif, true);
1467 vif->type = newviftype;
1468 vif->p2p = newp2p;
1469 err = iwl_setup_interface(priv, ctx);
1470 WARN_ON(err);
1471 /*
1472 * We've switched internally, but submitting to the
1473 * device may have failed for some reason. Mask this
1474 * error, because otherwise mac80211 will not switch
1475 * (and set the interface type back) and we'll be
1476 * out of sync with it.
1477 */
1478 err = 0;
1479
1480 out:
1481 mutex_unlock(&priv->mutex);
1482 IWL_DEBUG_MAC80211(priv, "leave\n");
1483
1484 return err;
1485}
1486
1487static int iwlagn_mac_hw_scan(struct ieee80211_hw *hw,
1488 struct ieee80211_vif *vif,
1489 struct cfg80211_scan_request *req)
1490{
1491 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1492 int ret;
1493
1494 IWL_DEBUG_MAC80211(priv, "enter\n");
1495
1496 if (req->n_channels == 0)
1497 return -EINVAL;
1498
1499 mutex_lock(&priv->mutex);
1500
1501 /*
1502 * If an internal scan is in progress, just set
1503 * up the scan_request as per above.
1504 */
1505 if (priv->scan_type != IWL_SCAN_NORMAL) {
1506 IWL_DEBUG_SCAN(priv,
1507 "SCAN request during internal scan - defer\n");
1508 priv->scan_request = req;
1509 priv->scan_vif = vif;
1510 ret = 0;
1511 } else {
1512 priv->scan_request = req;
1513 priv->scan_vif = vif;
1514 /*
1515 * mac80211 will only ask for one band at a time
1516 * so using channels[0] here is ok
1517 */
1518 ret = iwl_scan_initiate(priv, vif, IWL_SCAN_NORMAL,
1519 req->channels[0]->band);
1520 if (ret) {
1521 priv->scan_request = NULL;
1522 priv->scan_vif = NULL;
1523 }
1524 }
1525
1526 IWL_DEBUG_MAC80211(priv, "leave\n");
1527
1528 mutex_unlock(&priv->mutex);
1529
1530 return ret;
1531}
1532
1533static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1534{
1535 struct iwl_addsta_cmd cmd = {
1536 .mode = STA_CONTROL_MODIFY_MSK,
1537 .station_flags_msk = STA_FLG_PWR_SAVE_MSK,
1538 .sta.sta_id = sta_id,
1539 };
1540
1541 iwl_send_add_sta(priv, &cmd, CMD_ASYNC);
1542}
1543
1544static void iwlagn_mac_sta_notify(struct ieee80211_hw *hw,
1545 struct ieee80211_vif *vif,
1546 enum sta_notify_cmd cmd,
1547 struct ieee80211_sta *sta)
1548{
1549 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1550 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
1551 int sta_id;
1552
1553 IWL_DEBUG_MAC80211(priv, "enter\n");
1554
1555 switch (cmd) {
1556 case STA_NOTIFY_SLEEP:
1557 WARN_ON(!sta_priv->client);
1558 sta_priv->asleep = true;
1559 if (atomic_read(&sta_priv->pending_frames) > 0)
1560 ieee80211_sta_block_awake(hw, sta, true);
1561 break;
1562 case STA_NOTIFY_AWAKE:
1563 WARN_ON(!sta_priv->client);
1564 if (!sta_priv->asleep)
1565 break;
1566 sta_priv->asleep = false;
1567 sta_id = iwl_sta_id(sta);
1568 if (sta_id != IWL_INVALID_STATION)
1569 iwl_sta_modify_ps_wake(priv, sta_id);
1570 break;
1571 default:
1572 break;
1573 }
1574 IWL_DEBUG_MAC80211(priv, "leave\n");
1575}
1576
1577struct ieee80211_ops iwlagn_hw_ops = {
1578 .tx = iwlagn_mac_tx,
1579 .start = iwlagn_mac_start,
1580 .stop = iwlagn_mac_stop,
1581#ifdef CONFIG_PM_SLEEP
1582 .suspend = iwlagn_mac_suspend,
1583 .resume = iwlagn_mac_resume,
1584 .set_wakeup = iwlagn_mac_set_wakeup,
1585#endif
1586 .add_interface = iwlagn_mac_add_interface,
1587 .remove_interface = iwlagn_mac_remove_interface,
1588 .change_interface = iwlagn_mac_change_interface,
1589 .config = iwlagn_mac_config,
1590 .configure_filter = iwlagn_configure_filter,
1591 .set_key = iwlagn_mac_set_key,
1592 .update_tkip_key = iwlagn_mac_update_tkip_key,
1593 .set_rekey_data = iwlagn_mac_set_rekey_data,
1594 .conf_tx = iwlagn_mac_conf_tx,
1595 .bss_info_changed = iwlagn_bss_info_changed,
1596 .ampdu_action = iwlagn_mac_ampdu_action,
1597 .hw_scan = iwlagn_mac_hw_scan,
1598 .sta_notify = iwlagn_mac_sta_notify,
1599 .sta_state = iwlagn_mac_sta_state,
1600 .channel_switch = iwlagn_mac_channel_switch,
1601 .flush = iwlagn_mac_flush,
1602 .tx_last_beacon = iwlagn_mac_tx_last_beacon,
1603 .remain_on_channel = iwlagn_mac_remain_on_channel,
1604 .cancel_remain_on_channel = iwlagn_mac_cancel_remain_on_channel,
1605 .rssi_callback = iwlagn_mac_rssi_callback,
1606 CFG80211_TESTMODE_CMD(iwlagn_mac_testmode_cmd)
1607 CFG80211_TESTMODE_DUMP(iwlagn_mac_testmode_dump)
1608 .set_tim = iwlagn_mac_set_tim,
1609};
1610
1611/* This function both allocates and initializes hw and priv. */
1612struct ieee80211_hw *iwl_alloc_all(void)
1613{
1614 struct iwl_priv *priv;
1615 struct iwl_op_mode *op_mode;
1616 /* mac80211 allocates memory for this device instance, including
1617 * space for this driver's private structure */
1618 struct ieee80211_hw *hw;
1619
1620 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv) +
1621 sizeof(struct iwl_op_mode), &iwlagn_hw_ops);
1622 if (!hw)
1623 goto out;
1624
1625 op_mode = hw->priv;
1626 priv = IWL_OP_MODE_GET_DVM(op_mode);
1627 priv->hw = hw;
1628
1629out:
1630 return hw;
1631}
generated by cgit v1.2.2 (git 2.25.0) at 2025-09-11 03:29:23 -0400