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Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
[deliverable/linux.git] / drivers / net / wireless / intel / iwlwifi / dvm / mac80211.c
CommitLineData
7335613a
WYG		 1/******************************************************************************
2 *
51368bf7 3 * Copyright(c) 2003 - 2014 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:
cb2f8277 25 * Intel Linux Wireless <linuxwifi@intel.com>
7335613a
WYG		 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>
7335613a
WYG		 31#include <linux/slab.h>
32#include <linux/dma-mapping.h>
33#include <linux/delay.h>
34#include <linux/sched.h>
35#include <linux/skbuff.h>
36#include <linux/netdevice.h>
7335613a
WYG		 37#include <linux/etherdevice.h>
38#include <linux/if_arp.h>
39
53e1116e 40#include <net/ieee80211_radiotap.h>
7335613a
WYG		 41#include <net/mac80211.h>
42
43#include <asm/div64.h>
44
7335613a 45#include "iwl-io.h"
7335613a 46#include "iwl-trans.h"
d0f76d68 47#include "iwl-op-mode.h"
65de7e84 48#include "iwl-modparams.h"
7335613a 49
1023fdc4
JB		 50#include "dev.h"
51#include "calib.h"
52#include "agn.h"
53
7335613a
WYG		 54/*****************************************************************************
55 *
56 * mac80211 entry point functions
57 *
58 *****************************************************************************/
59
60static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
61 {
62 .max = 1,
63 .types = BIT(NL80211_IFTYPE_STATION),
64 },
65 {
66 .max = 1,
67 .types = BIT(NL80211_IFTYPE_AP),
68 },
69};
70
71static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
72 {
73 .max = 2,
74 .types = BIT(NL80211_IFTYPE_STATION),
75 },
76};
77
7335613a
WYG		 78static const struct ieee80211_iface_combination
79iwlagn_iface_combinations_dualmode[] = {
80 { .num_different_channels = 1,
81 .max_interfaces = 2,
82 .beacon_int_infra_match = true,
83 .limits = iwlagn_sta_ap_limits,
84 .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
85 },
86 { .num_different_channels = 1,
87 .max_interfaces = 2,
88 .limits = iwlagn_2sta_limits,
89 .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
90 },
91};
92
7335613a
WYG		 93/*
94 * Not a mac80211 entry point function, but it fits in with all the
95 * other mac80211 functions grouped here.
96 */
97int iwlagn_mac_setup_register(struct iwl_priv *priv,
0692fe41 98 const struct iwl_ucode_capabilities *capa)
7335613a
WYG		 99{
100 int ret;
101 struct ieee80211_hw *hw = priv->hw;
102 struct iwl_rxon_context *ctx;
103
104 hw->rate_control_algorithm = "iwl-agn-rs";
105
106 /* Tell mac80211 our characteristics */
30686bf7
JB		 107 ieee80211_hw_set(hw, SIGNAL_DBM);
108 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
109 ieee80211_hw_set(hw, NEED_DTIM_BEFORE_ASSOC);
110 ieee80211_hw_set(hw, SPECTRUM_MGMT);
111 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
112 ieee80211_hw_set(hw, QUEUE_CONTROL);
113 ieee80211_hw_set(hw, SUPPORTS_PS);
114 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
115 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
116 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
1479177b 117
07abbc50
JB		 118 if (priv->trans->max_skb_frags)
119 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
120
1479177b 121 hw->offchannel_tx_hw_queue = IWL_AUX_QUEUE;
53e1116e 122 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FMT;
7335613a
WYG		 123
124 /*
125 * Including the following line will crash some AP's. This
126 * workaround removes the stimulus which causes the crash until
127 * the AP software can be fixed.
128 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
129 */
130
b7998c8b 131 if (priv->nvm_data->sku_cap_11n_enable)
0d8614b4
EP		 132 hw->wiphy->features |= NL80211_FEATURE_DYNAMIC_SMPS |
133 NL80211_FEATURE_STATIC_SMPS;
7335613a 134
686681b0
JB		 135 /*
136 * Enable 11w if advertised by firmware and software crypto
137 * is not enabled (as the firmware will interpret some mgmt
138 * packets, so enabling it with software crypto isn't safe)
139 */
140 if (priv->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
141 !iwlwifi_mod_params.sw_crypto)
30686bf7 142 ieee80211_hw_set(hw, MFP_CAPABLE);
7335613a
WYG		 143
144 hw->sta_data_size = sizeof(struct iwl_station_priv);
145 hw->vif_data_size = sizeof(struct iwl_vif_priv);
146
147 for_each_context(priv, ctx) {
148 hw->wiphy->interface_modes |= ctx->interface_modes;
149 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
150 }
151
152 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
153
da4f87f0 154 if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
7335613a
WYG		 155 hw->wiphy->iface_combinations =
156 iwlagn_iface_combinations_dualmode;
157 hw->wiphy->n_iface_combinations =
158 ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
159 }
160
a2f73b6c
LR		 161 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
162 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
163 REGULATORY_DISABLE_BEACON_HINTS;
7335613a 164
fcb6ff5e 165#ifdef CONFIG_PM_SLEEP
6dfa8d01 166 if (priv->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
ddaf5a5b
JB		 167 priv->trans->ops->d3_suspend &&
168 priv->trans->ops->d3_resume &&
68e8dfda 169 device_can_wakeup(priv->trans->dev)) {
964dc9e2
JB		 170 priv->wowlan_support.flags = WIPHY_WOWLAN_MAGIC_PKT |
171 WIPHY_WOWLAN_DISCONNECT |
172 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
173 WIPHY_WOWLAN_RFKILL_RELEASE;
65de7e84 174 if (!iwlwifi_mod_params.sw_crypto)
964dc9e2 175 priv->wowlan_support.flags |=
7335613a
WYG		 176 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
177 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
178
964dc9e2
JB		 179 priv->wowlan_support.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
180 priv->wowlan_support.pattern_min_len =
7335613a 181 IWLAGN_WOWLAN_MIN_PATTERN_LEN;
964dc9e2 182 priv->wowlan_support.pattern_max_len =
7335613a 183 IWLAGN_WOWLAN_MAX_PATTERN_LEN;
964dc9e2 184 hw->wiphy->wowlan = &priv->wowlan_support;
7335613a 185 }
fcb6ff5e 186#endif
7335613a 187
65de7e84 188 if (iwlwifi_mod_params.power_save)
7335613a
WYG		 189 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
190 else
191 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
192
193 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
4f9bfbb1
DS		 194 /* we create the 802.11 header and a max-length SSID element */
195 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 34;
7335613a 196
1479177b
JB		 197 /*
198 * We don't use all queues: 4 and 9 are unused and any
199 * aggregation queue gets mapped down to the AC queue.
200 */
201 hw->queues = IWLAGN_FIRST_AMPDU_QUEUE;
7335613a
WYG		 202
203 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
204
b7998c8b 205 if (priv->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
7335613a 206 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
b7998c8b
EL		 207 &priv->nvm_data->bands[IEEE80211_BAND_2GHZ];
208 if (priv->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
7335613a 209 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
b7998c8b 210 &priv->nvm_data->bands[IEEE80211_BAND_5GHZ];
7335613a 211
68e8dfda 212 hw->wiphy->hw_version = priv->trans->hw_id;
0ba958eb 213
7335613a
WYG		 214 iwl_leds_init(priv);
215
216 ret = ieee80211_register_hw(priv->hw);
217 if (ret) {
218 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
0e1fa7ef 219 iwl_leds_exit(priv);
7335613a
WYG		 220 return ret;
221 }
222 priv->mac80211_registered = 1;
223
224 return 0;
225}
226
09af1403
DF		 227void iwlagn_mac_unregister(struct iwl_priv *priv)
228{
229 if (!priv->mac80211_registered)
230 return;
231 iwl_leds_exit(priv);
232 ieee80211_unregister_hw(priv->hw);
233 priv->mac80211_registered = 0;
234}
235
7335613a
WYG		 236static int __iwl_up(struct iwl_priv *priv)
237{
238 struct iwl_rxon_context *ctx;
239 int ret;
240
b1eea297 241 lockdep_assert_held(&priv->mutex);
7335613a 242
83626404 243 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
7335613a
WYG		 244 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
245 return -EIO;
246 }
247
248 for_each_context(priv, ctx) {
249 ret = iwlagn_alloc_bcast_station(priv, ctx);
250 if (ret) {
251 iwl_dealloc_bcast_stations(priv);
252 return ret;
253 }
254 }
255
012c02c1
EG		 256 ret = iwl_trans_start_hw(priv->trans);
257 if (ret) {
258 IWL_ERR(priv, "Failed to start HW: %d\n", ret);
259 goto error;
260 }
261
e1991885 262 ret = iwl_run_init_ucode(priv);
7335613a
WYG		 263 if (ret) {
264 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
265 goto error;
266 }
267
012c02c1
EG		 268 ret = iwl_trans_start_hw(priv->trans);
269 if (ret) {
270 IWL_ERR(priv, "Failed to start HW: %d\n", ret);
271 goto error;
272 }
273
e1991885 274 ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_REGULAR);
7335613a
WYG		 275 if (ret) {
276 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
277 goto error;
278 }
279
280 ret = iwl_alive_start(priv);
281 if (ret)
282 goto error;
283 return 0;
284
285 error:
83626404 286 set_bit(STATUS_EXIT_PENDING, &priv->status);
78e5a464 287 iwl_down(priv);
83626404 288 clear_bit(STATUS_EXIT_PENDING, &priv->status);
7335613a
WYG		 289
290 IWL_ERR(priv, "Unable to initialize device.\n");
291 return ret;
292}
293
294static int iwlagn_mac_start(struct ieee80211_hw *hw)
295{
d0f76d68 296 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 297 int ret;
298
299 IWL_DEBUG_MAC80211(priv, "enter\n");
300
301 /* we should be verifying the device is ready to be opened */
b1eea297 302 mutex_lock(&priv->mutex);
7335613a 303 ret = __iwl_up(priv);
b1eea297 304 mutex_unlock(&priv->mutex);
7335613a
WYG		 305 if (ret)
306 return ret;
307
308 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
309
310 /* Now we should be done, and the READY bit should be set. */
83626404 311 if (WARN_ON(!test_bit(STATUS_READY, &priv->status)))
7335613a
WYG		 312 ret = -EIO;
313
314 iwlagn_led_enable(priv);
315
316 priv->is_open = 1;
317 IWL_DEBUG_MAC80211(priv, "leave\n");
318 return 0;
319}
320
aca86268 321static void iwlagn_mac_stop(struct ieee80211_hw *hw)
7335613a 322{
d0f76d68 323 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 324
325 IWL_DEBUG_MAC80211(priv, "enter\n");
326
327 if (!priv->is_open)
328 return;
329
330 priv->is_open = 0;
331
b1eea297 332 mutex_lock(&priv->mutex);
7335613a 333 iwl_down(priv);
b1eea297 334 mutex_unlock(&priv->mutex);
78e5a464
EG		 335
336 iwl_cancel_deferred_work(priv);
7335613a 337
1ee158d8 338 flush_workqueue(priv->workqueue);
7335613a 339
7335613a
WYG		 340 IWL_DEBUG_MAC80211(priv, "leave\n");
341}
342
aca86268
JB		 343static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
344 struct ieee80211_vif *vif,
345 struct cfg80211_gtk_rekey_data *data)
7335613a 346{
d0f76d68 347 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a 348
65de7e84 349 if (iwlwifi_mod_params.sw_crypto)
7335613a
WYG		 350 return;
351
352 IWL_DEBUG_MAC80211(priv, "enter\n");
b1eea297 353 mutex_lock(&priv->mutex);
7335613a
WYG		 354
355 if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
356 goto out;
357
358 memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
359 memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
360 priv->replay_ctr =
361 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
362 priv->have_rekey_data = true;
363
364 out:
b1eea297 365 mutex_unlock(&priv->mutex);
7335613a
WYG		 366 IWL_DEBUG_MAC80211(priv, "leave\n");
367}
368
369#ifdef CONFIG_PM_SLEEP
7335613a 370
aca86268
JB		 371static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
372 struct cfg80211_wowlan *wowlan)
7335613a 373{
d0f76d68 374 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a 375 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
023ca58f 376 int ret;
7335613a
WYG		 377
378 if (WARN_ON(!wowlan))
379 return -EINVAL;
380
381 IWL_DEBUG_MAC80211(priv, "enter\n");
b1eea297 382 mutex_lock(&priv->mutex);
7335613a
WYG		 383
384 /* Don't attempt WoWLAN when not associated, tear down instead. */
385 if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
386 !iwl_is_associated_ctx(ctx)) {
387 ret = 1;
388 goto out;
389 }
390
ea886a60 391 ret = iwlagn_suspend(priv, wowlan);
7335613a
WYG		 392 if (ret)
393 goto error;
394
8ade6285
JB		 395 /* let the ucode operate on its own */
396 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_SET,
397 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
398
23ae6128 399 iwl_trans_d3_suspend(priv->trans, false, true);
7335613a
WYG		 400
401 goto out;
402
403 error:
15b86bff 404 priv->wowlan = false;
7335613a
WYG		 405 iwlagn_prepare_restart(priv);
406 ieee80211_restart_hw(priv->hw);
407 out:
b1eea297 408 mutex_unlock(&priv->mutex);
7335613a
WYG		 409 IWL_DEBUG_MAC80211(priv, "leave\n");
410
411 return ret;
412}
413
5718d27f
JB		 414struct iwl_resume_data {
415 struct iwl_priv *priv;
416 struct iwlagn_wowlan_status *cmd;
417 bool valid;
418};
419
420static bool iwl_resume_status_fn(struct iwl_notif_wait_data *notif_wait,
421 struct iwl_rx_packet *pkt, void *data)
422{
423 struct iwl_resume_data *resume_data = data;
424 struct iwl_priv *priv = resume_data->priv;
5718d27f 425
65b30348 426 if (iwl_rx_packet_payload_len(pkt) != sizeof(*resume_data->cmd)) {
5718d27f
JB		 427 IWL_ERR(priv, "rx wrong size data\n");
428 return true;
429 }
430 memcpy(resume_data->cmd, pkt->data, sizeof(*resume_data->cmd));
431 resume_data->valid = true;
432
433 return true;
434}
435
7335613a
WYG		 436static int iwlagn_mac_resume(struct ieee80211_hw *hw)
437{
d0f76d68 438 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 439 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
440 struct ieee80211_vif *vif;
5718d27f
JB		 441 u32 base;
442 int ret;
443 enum iwl_d3_status d3_status;
444 struct error_table_start {
445 /* cf. struct iwl_error_event_table */
446 u32 valid;
447 u32 error_id;
448 } err_info;
449 struct iwl_notification_wait status_wait;
6eb031d2 450 static const u16 status_cmd[] = {
5718d27f
JB		 451 REPLY_WOWLAN_GET_STATUS,
452 };
453 struct iwlagn_wowlan_status status_data = {};
454 struct iwl_resume_data resume_data = {
455 .priv = priv,
456 .cmd = &status_data,
457 .valid = false,
458 };
459 struct cfg80211_wowlan_wakeup wakeup = {
460 .pattern_idx = -1,
461 };
462#ifdef CONFIG_IWLWIFI_DEBUGFS
463 const struct fw_img *img;
464#endif
7335613a
WYG		 465
466 IWL_DEBUG_MAC80211(priv, "enter\n");
b1eea297 467 mutex_lock(&priv->mutex);
7335613a 468
5718d27f
JB		 469 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
470 vif = ctx->vif;
471
23ae6128 472 ret = iwl_trans_d3_resume(priv->trans, &d3_status, false, true);
5718d27f
JB		 473 if (ret)
474 goto out_unlock;
475
476 if (d3_status != IWL_D3_STATUS_ALIVE) {
477 IWL_INFO(priv, "Device was reset during suspend\n");
478 goto out_unlock;
479 }
7335613a 480
8ade6285
JB		 481 /* uCode is no longer operating by itself */
482 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
483 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
484
2fdfc476 485 base = priv->device_pointers.error_event_table;
5718d27f
JB		 486 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
487 IWL_WARN(priv, "Invalid error table during resume!\n");
488 goto out_unlock;
489 }
490
491 iwl_trans_read_mem_bytes(priv->trans, base,
492 &err_info, sizeof(err_info));
493
494 if (err_info.valid) {
495 IWL_INFO(priv, "error table is valid (%d, 0x%x)\n",
496 err_info.valid, err_info.error_id);
497 if (err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
498 wakeup.rfkill_release = true;
499 ieee80211_report_wowlan_wakeup(vif, &wakeup,
500 GFP_KERNEL);
7335613a 501 }
5718d27f
JB		 502 goto out_unlock;
503 }
7335613a
WYG		 504
505#ifdef CONFIG_IWLWIFI_DEBUGFS
5718d27f
JB		 506 img = &priv->fw->img[IWL_UCODE_WOWLAN];
507 if (!priv->wowlan_sram)
508 priv->wowlan_sram =
509 kzalloc(img->sec[IWL_UCODE_SECTION_DATA].len,
510 GFP_KERNEL);
511
512 if (priv->wowlan_sram)
513 iwl_trans_read_mem(priv->trans, 0x800000,
514 priv->wowlan_sram,
515 img->sec[IWL_UCODE_SECTION_DATA].len / 4);
7335613a 516#endif
7335613a 517
5718d27f
JB		 518 /*
519 * This is very strange. The GET_STATUS command is sent but the device
520 * doesn't reply properly, it seems it doesn't close the RBD so one is
521 * always left open ... As a result, we need to send another command
522 * and have to reset the driver afterwards. As we need to switch to
523 * runtime firmware again that'll happen.
524 */
525
526 iwl_init_notification_wait(&priv->notif_wait, &status_wait, status_cmd,
527 ARRAY_SIZE(status_cmd), iwl_resume_status_fn,
528 &resume_data);
529
530 iwl_dvm_send_cmd_pdu(priv, REPLY_WOWLAN_GET_STATUS, CMD_ASYNC, 0, NULL);
531 iwl_dvm_send_cmd_pdu(priv, REPLY_ECHO, CMD_ASYNC, 0, NULL);
532 /* an RBD is left open in the firmware now! */
533
534 ret = iwl_wait_notification(&priv->notif_wait, &status_wait, HZ/5);
535 if (ret)
536 goto out_unlock;
537
538 if (resume_data.valid && priv->contexts[IWL_RXON_CTX_BSS].vif) {
539 u32 reasons = le32_to_cpu(status_data.wakeup_reason);
540 struct cfg80211_wowlan_wakeup *wakeup_report;
541
542 IWL_INFO(priv, "WoWLAN wakeup reason(s): 0x%.8x\n", reasons);
543
544 if (reasons) {
545 if (reasons & IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET)
546 wakeup.magic_pkt = true;
547 if (reasons & IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH)
548 wakeup.pattern_idx = status_data.pattern_number;
549 if (reasons & (IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
550 IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE))
551 wakeup.disconnect = true;
552 if (reasons & IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL)
553 wakeup.gtk_rekey_failure = true;
554 if (reasons & IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ)
555 wakeup.eap_identity_req = true;
556 if (reasons & IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE)
557 wakeup.four_way_handshake = true;
558 wakeup_report = &wakeup;
559 } else {
560 wakeup_report = NULL;
561 }
562
563 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
564 }
7335613a 565
15b86bff 566 priv->wowlan = false;
7335613a 567
7335613a
WYG		 568 iwlagn_prepare_restart(priv);
569
570 memset((void *)&ctx->active, 0, sizeof(ctx->active));
571 iwl_connection_init_rx_config(priv, ctx);
572 iwlagn_set_rxon_chain(priv, ctx);
573
5718d27f 574 out_unlock:
b1eea297 575 mutex_unlock(&priv->mutex);
7335613a
WYG		 576 IWL_DEBUG_MAC80211(priv, "leave\n");
577
578 ieee80211_resume_disconnect(vif);
579
580 return 1;
581}
582
76ed2edd
JB		 583static void iwlagn_mac_set_wakeup(struct ieee80211_hw *hw, bool enabled)
584{
585 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
586
587 device_set_wakeup_enable(priv->trans->dev, enabled);
588}
7335613a
WYG		 589#endif
590
36323f81
TH		 591static void iwlagn_mac_tx(struct ieee80211_hw *hw,
592 struct ieee80211_tx_control *control,
593 struct sk_buff *skb)
7335613a 594{
d0f76d68 595 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a 596
36323f81 597 if (iwlagn_tx_skb(priv, control->sta, skb))
31df3bb7 598 ieee80211_free_txskb(hw, skb);
7335613a
WYG		 599}
600
aca86268
JB		 601static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
602 struct ieee80211_vif *vif,
603 struct ieee80211_key_conf *keyconf,
604 struct ieee80211_sta *sta,
605 u32 iv32, u16 *phase1key)
7335613a 606{
d0f76d68 607 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 608
609 iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
610}
611
aca86268
JB		 612static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
613 struct ieee80211_vif *vif,
614 struct ieee80211_sta *sta,
615 struct ieee80211_key_conf *key)
7335613a 616{
d0f76d68 617 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 618 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
619 struct iwl_rxon_context *ctx = vif_priv->ctx;
620 int ret;
621 bool is_default_wep_key = false;
622
623 IWL_DEBUG_MAC80211(priv, "enter\n");
624
65de7e84 625 if (iwlwifi_mod_params.sw_crypto) {
7335613a
WYG		 626 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
627 return -EOPNOTSUPP;
628 }
629
a7e12c8e
JB		 630 switch (key->cipher) {
631 case WLAN_CIPHER_SUITE_TKIP:
632 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
633 /* fall through */
634 case WLAN_CIPHER_SUITE_CCMP:
635 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
636 break;
637 default:
638 break;
639 }
640
7335613a
WYG		 641 /*
642 * We could program these keys into the hardware as well, but we
643 * don't expect much multicast traffic in IBSS and having keys
644 * for more stations is probably more useful.
645 *
646 * Mark key TX-only and return 0.
647 */
648 if (vif->type == NL80211_IFTYPE_ADHOC &&
649 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
650 key->hw_key_idx = WEP_INVALID_OFFSET;
651 return 0;
652 }
653
654 /* If they key was TX-only, accept deletion */
655 if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
656 return 0;
657
b1eea297 658 mutex_lock(&priv->mutex);
7335613a
WYG		 659 iwl_scan_cancel_timeout(priv, 100);
660
661 BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
662
663 /*
664 * If we are getting WEP group key and we didn't receive any key mapping
665 * so far, we are in legacy wep mode (group key only), otherwise we are
666 * in 1X mode.
667 * In legacy wep mode, we use another host command to the uCode.
668 */
669 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
670 key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
671 if (cmd == SET_KEY)
672 is_default_wep_key = !ctx->key_mapping_keys;
673 else
674 is_default_wep_key =
675 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
676 }
677
678
679 switch (cmd) {
680 case SET_KEY:
681 if (is_default_wep_key) {
682 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
683 break;
684 }
685 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
686 if (ret) {
687 /*
688 * can't add key for RX, but we don't need it
689 * in the device for TX so still return 0
690 */
691 ret = 0;
692 key->hw_key_idx = WEP_INVALID_OFFSET;
693 }
694
695 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
696 break;
697 case DISABLE_KEY:
698 if (is_default_wep_key)
699 ret = iwl_remove_default_wep_key(priv, ctx, key);
700 else
701 ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
702
703 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
704 break;
705 default:
706 ret = -EINVAL;
707 }
708
b1eea297 709 mutex_unlock(&priv->mutex);
7335613a
WYG		 710 IWL_DEBUG_MAC80211(priv, "leave\n");
711
712 return ret;
713}
714
205e2210
EG		 715static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
716{
717 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
718 return false;
719 return true;
720}
721
722static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
723{
724 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
725 return false;
726 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
727 return true;
728
729 /* disabled by default */
730 return false;
731}
732
aca86268
JB		 733static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
734 struct ieee80211_vif *vif,
50ea05ef 735 struct ieee80211_ampdu_params *params)
7335613a 736{
d0f76d68 737 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a 738 int ret = -EINVAL;
50ea05ef
SS		 739 struct ieee80211_sta *sta = params->sta;
740 enum ieee80211_ampdu_mlme_action action = params->action;
741 u16 tid = params->tid;
742 u16 *ssn = &params->ssn;
743 u8 buf_size = params->buf_size;
7335613a 744 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
7335613a
WYG		 745
746 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
747 sta->addr, tid);
748
b7998c8b 749 if (!(priv->nvm_data->sku_cap_11n_enable))
7335613a
WYG		 750 return -EACCES;
751
752 IWL_DEBUG_MAC80211(priv, "enter\n");
b1eea297 753 mutex_lock(&priv->mutex);
7335613a
WYG		 754
755 switch (action) {
756 case IEEE80211_AMPDU_RX_START:
205e2210 757 if (!iwl_enable_rx_ampdu(priv->cfg))
7428994d 758 break;
7335613a
WYG		 759 IWL_DEBUG_HT(priv, "start Rx\n");
760 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
761 break;
762 case IEEE80211_AMPDU_RX_STOP:
763 IWL_DEBUG_HT(priv, "stop Rx\n");
764 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
7335613a
WYG		 765 break;
766 case IEEE80211_AMPDU_TX_START:
4beaf6c2 767 if (!priv->trans->ops->txq_enable)
9eae88fa 768 break;
205e2210 769 if (!iwl_enable_tx_ampdu(priv->cfg))
7428994d 770 break;
7335613a
WYG		 771 IWL_DEBUG_HT(priv, "start Tx\n");
772 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
773 break;
18b559d5
JB		 774 case IEEE80211_AMPDU_TX_STOP_FLUSH:
775 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
2d055afd
EG		 776 IWL_DEBUG_HT(priv, "Flush Tx\n");
777 ret = iwlagn_tx_agg_flush(priv, vif, sta, tid);
778 break;
779 case IEEE80211_AMPDU_TX_STOP_CONT:
7335613a
WYG		 780 IWL_DEBUG_HT(priv, "stop Tx\n");
781 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
782 if ((ret == 0) && (priv->agg_tids_count > 0)) {
783 priv->agg_tids_count--;
784 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
785 priv->agg_tids_count);
786 }
b9ad70da 787 if (!priv->agg_tids_count &&
9e295116 788 priv->hw_params.use_rts_for_aggregation) {
7335613a
WYG		 789 /*
790 * switch off RTS/CTS if it was previously enabled
791 */
792 sta_priv->lq_sta.lq.general_params.flags &=
793 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
794 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
795 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
796 }
797 break;
798 case IEEE80211_AMPDU_TX_OPERATIONAL:
822e8b2a 799 ret = iwlagn_tx_agg_oper(priv, vif, sta, tid, buf_size);
7335613a
WYG		 800 break;
801 }
b1eea297 802 mutex_unlock(&priv->mutex);
7335613a
WYG		 803 IWL_DEBUG_MAC80211(priv, "leave\n");
804 return ret;
805}
806
807static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
808 struct ieee80211_vif *vif,
809 struct ieee80211_sta *sta)
810{
d0f76d68 811 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 812 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
813 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
814 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
fb5fe5b9 815 int ret;
7335613a
WYG		 816 u8 sta_id;
817
7335613a
WYG		 818 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
819 sta->addr);
820 sta_priv->sta_id = IWL_INVALID_STATION;
821
822 atomic_set(&sta_priv->pending_frames, 0);
823 if (vif->type == NL80211_IFTYPE_AP)
824 sta_priv->client = true;
825
826 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
827 is_ap, sta, &sta_id);
828 if (ret) {
829 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
830 sta->addr, ret);
831 /* Should we return success if return code is EEXIST ? */
fb5fe5b9 832 return ret;
7335613a
WYG		 833 }
834
835 sta_priv->sta_id = sta_id;
836
fb5fe5b9
JB		 837 return 0;
838}
839
840static int iwlagn_mac_sta_remove(struct ieee80211_hw *hw,
841 struct ieee80211_vif *vif,
842 struct ieee80211_sta *sta)
843{
844 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
845 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
846 int ret;
847
97420515
JB		 848 IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n", sta->addr);
849
850 if (vif->type == NL80211_IFTYPE_STATION) {
851 /*
852 * Station will be removed from device when the RXON
853 * is set to unassociated -- just deactivate it here
854 * to avoid re-programming it.
855 */
856 ret = 0;
857 iwl_deactivate_station(priv, sta_priv->sta_id, sta->addr);
858 } else {
859 ret = iwl_remove_station(priv, sta_priv->sta_id, sta->addr);
860 if (ret)
861 IWL_DEBUG_QUIET_RFKILL(priv,
862 "Error removing station %pM\n", sta->addr);
863 }
fb5fe5b9
JB		 864 return ret;
865}
866
aca86268
JB		 867static int iwlagn_mac_sta_state(struct ieee80211_hw *hw,
868 struct ieee80211_vif *vif,
869 struct ieee80211_sta *sta,
870 enum ieee80211_sta_state old_state,
871 enum ieee80211_sta_state new_state)
fb5fe5b9
JB		 872{
873 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
ab0bd5b3 874 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
fb5fe5b9 875 enum {
ab0bd5b3 876 NONE, ADD, REMOVE, HT_RATE_INIT, ADD_RATE_INIT,
fb5fe5b9
JB		 877 } op = NONE;
878 int ret;
879
880 IWL_DEBUG_MAC80211(priv, "station %pM state change %d->%d\n",
881 sta->addr, old_state, new_state);
882
b1eea297 883 mutex_lock(&priv->mutex);
fb5fe5b9
JB		 884 if (vif->type == NL80211_IFTYPE_STATION) {
885 if (old_state == IEEE80211_STA_NOTEXIST &&
886 new_state == IEEE80211_STA_NONE)
887 op = ADD;
888 else if (old_state == IEEE80211_STA_NONE &&
889 new_state == IEEE80211_STA_NOTEXIST)
890 op = REMOVE;
891 else if (old_state == IEEE80211_STA_AUTH &&
892 new_state == IEEE80211_STA_ASSOC)
ab0bd5b3 893 op = HT_RATE_INIT;
fb5fe5b9
JB		 894 } else {
895 if (old_state == IEEE80211_STA_AUTH &&
896 new_state == IEEE80211_STA_ASSOC)
897 op = ADD_RATE_INIT;
898 else if (old_state == IEEE80211_STA_ASSOC &&
899 new_state == IEEE80211_STA_AUTH)
900 op = REMOVE;
901 }
902
903 switch (op) {
904 case ADD:
905 ret = iwlagn_mac_sta_add(hw, vif, sta);
eac9ac6d
JB		 906 if (ret)
907 break;
908 /*
909 * Clear the in-progress flag, the AP station entry was added
910 * but we'll initialize LQ only when we've associated (which
911 * would also clear the in-progress flag). This is necessary
912 * in case we never initialize LQ because association fails.
913 */
914 spin_lock_bh(&priv->sta_lock);
915 priv->stations[iwl_sta_id(sta)].used &=
916 ~IWL_STA_UCODE_INPROGRESS;
917 spin_unlock_bh(&priv->sta_lock);
fb5fe5b9
JB		 918 break;
919 case REMOVE:
920 ret = iwlagn_mac_sta_remove(hw, vif, sta);
921 break;
922 case ADD_RATE_INIT:
923 ret = iwlagn_mac_sta_add(hw, vif, sta);
924 if (ret)
925 break;
fb5fe5b9
JB		 926 /* Initialize rate scaling */
927 IWL_DEBUG_INFO(priv,
928 "Initializing rate scaling for station %pM\n",
929 sta->addr);
930 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
931 ret = 0;
932 break;
ab0bd5b3
JB		 933 case HT_RATE_INIT:
934 /* Initialize rate scaling */
935 ret = iwl_sta_update_ht(priv, vif_priv->ctx, sta);
936 if (ret)
937 break;
938 IWL_DEBUG_INFO(priv,
939 "Initializing rate scaling for station %pM\n",
940 sta->addr);
941 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
942 ret = 0;
943 break;
fb5fe5b9
JB		 944 default:
945 ret = 0;
946 break;
947 }
948
949 /*
950 * mac80211 might WARN if we fail, but due the way we
951 * (badly) handle hard rfkill, we might fail here
952 */
83626404 953 if (iwl_is_rfkill(priv))
fb5fe5b9
JB		 954 ret = 0;
955
b1eea297 956 mutex_unlock(&priv->mutex);
7335613a
WYG		 957 IWL_DEBUG_MAC80211(priv, "leave\n");
958
959 return ret;
960}
961
aca86268 962static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
0f791eb4 963 struct ieee80211_vif *vif,
aca86268 964 struct ieee80211_channel_switch *ch_switch)
7335613a 965{
d0f76d68 966 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a 967 struct ieee80211_conf *conf = &hw->conf;
85220d71 968 struct ieee80211_channel *channel = ch_switch->chandef.chan;
7335613a
WYG		 969 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
970 /*
971 * MULTI-FIXME
972 * When we add support for multiple interfaces, we need to
973 * revisit this. The channel switch command in the device
974 * only affects the BSS context, but what does that really
975 * mean? And what if we get a CSA on the second interface?
976 * This needs a lot of work.
977 */
978 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
979 u16 ch;
980
981 IWL_DEBUG_MAC80211(priv, "enter\n");
982
b1eea297 983 mutex_lock(&priv->mutex);
7335613a 984
83626404 985 if (iwl_is_rfkill(priv))
7335613a
WYG		 986 goto out;
987
83626404
DF		 988 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
989 test_bit(STATUS_SCANNING, &priv->status) ||
990 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
7335613a
WYG		 991 goto out;
992
993 if (!iwl_is_associated_ctx(ctx))
994 goto out;
995
e9676695 996 if (!priv->lib->set_channel_switch)
7335613a
WYG		 997 goto out;
998
999 ch = channel->hw_value;
1000 if (le16_to_cpu(ctx->active.channel) == ch)
1001 goto out;
1002
7335613a
WYG		 1003 priv->current_ht_config.smps = conf->smps_mode;
1004
1005 /* Configure HT40 channels */
85220d71
JB		 1006 switch (cfg80211_get_chandef_type(&ch_switch->chandef)) {
1007 case NL80211_CHAN_NO_HT:
1008 case NL80211_CHAN_HT20:
7335613a 1009 ctx->ht.is_40mhz = false;
85220d71
JB		 1010 ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
1011 break;
1012 case NL80211_CHAN_HT40MINUS:
1013 ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
1014 ctx->ht.is_40mhz = true;
1015 break;
1016 case NL80211_CHAN_HT40PLUS:
1017 ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
1018 ctx->ht.is_40mhz = true;
1019 break;
1020 }
7335613a
WYG		 1021
1022 if ((le16_to_cpu(ctx->staging.channel) != ch))
1023 ctx->staging.flags = 0;
1024
1025 iwl_set_rxon_channel(priv, channel, ctx);
1026 iwl_set_rxon_ht(priv, ht_conf);
1027 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
1028
7335613a
WYG		 1029 /*
1030 * at this point, staging_rxon has the
1031 * configuration for channel switch
1032 */
83626404 1033 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
7335613a 1034 priv->switch_channel = cpu_to_le16(ch);
e9676695 1035 if (priv->lib->set_channel_switch(priv, ch_switch)) {
83626404 1036 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
7335613a
WYG		 1037 priv->switch_channel = 0;
1038 ieee80211_chswitch_done(ctx->vif, false);
1039 }
1040
1041out:
b1eea297 1042 mutex_unlock(&priv->mutex);
7335613a
WYG		 1043 IWL_DEBUG_MAC80211(priv, "leave\n");
1044}
1045
bedec3a6
MV		 1046void iwl_chswitch_done(struct iwl_priv *priv, bool is_success)
1047{
1048 /*
1049 * MULTI-FIXME
1050 * See iwlagn_mac_channel_switch.
1051 */
1052 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1053
1054 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1055 return;
1056
9186a1fd
SG		 1057 if (!test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
1058 return;
1059
1060 if (ctx->vif)
bedec3a6
MV		 1061 ieee80211_chswitch_done(ctx->vif, is_success);
1062}
1063
aca86268
JB		 1064static void iwlagn_configure_filter(struct ieee80211_hw *hw,
1065 unsigned int changed_flags,
1066 unsigned int *total_flags,
1067 u64 multicast)
7335613a 1068{
d0f76d68 1069 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 1070 __le32 filter_or = 0, filter_nand = 0;
1071 struct iwl_rxon_context *ctx;
1072
1073#define CHK(test, flag) do { \
1074 if (*total_flags & (test)) \
1075 filter_or |= (flag); \
1076 else \
1077 filter_nand |= (flag); \
1078 } while (0)
1079
1080 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1081 changed_flags, *total_flags);
1082
df140465 1083 CHK(FIF_OTHER_BSS, RXON_FILTER_PROMISC_MSK);
7335613a
WYG		 1084 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
1085 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
1086 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
1087
1088#undef CHK
1089
b1eea297 1090 mutex_lock(&priv->mutex);
7335613a
WYG		 1091
1092 for_each_context(priv, ctx) {
1093 ctx->staging.filter_flags &= ~filter_nand;
1094 ctx->staging.filter_flags |= filter_or;
1095
1096 /*
1097 * Not committing directly because hardware can perform a scan,
1098 * but we'll eventually commit the filter flags change anyway.
1099 */
1100 }
1101
b1eea297 1102 mutex_unlock(&priv->mutex);
7335613a
WYG		 1103
1104 /*
1105 * Receiving all multicast frames is always enabled by the
1106 * default flags setup in iwl_connection_init_rx_config()
1107 * since we currently do not support programming multicast
1108 * filters into the device.
1109 */
df140465 1110 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
7335613a
WYG		 1111 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1112}
1113
77be2c54
EG		 1114static void iwlagn_mac_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1115 u32 queues, bool drop)
7335613a 1116{
d0f76d68 1117 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
a0855054 1118 u32 scd_queues;
7335613a 1119
b1eea297 1120 mutex_lock(&priv->mutex);
7335613a
WYG		 1121 IWL_DEBUG_MAC80211(priv, "enter\n");
1122
83626404 1123 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
7335613a
WYG		 1124 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
1125 goto done;
1126 }
83626404 1127 if (iwl_is_rfkill(priv)) {
7335613a
WYG		 1128 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
1129 goto done;
1130 }
1131
a0855054
EG		 1132 scd_queues = BIT(priv->cfg->base_params->num_of_queues) - 1;
1133 scd_queues &= ~(BIT(IWL_IPAN_CMD_QUEUE_NUM) |
1134 BIT(IWL_DEFAULT_CMD_QUEUE_NUM));
1135
a3a0a599
EG		 1136 if (drop) {
1137 IWL_DEBUG_TX_QUEUES(priv, "Flushing SCD queues: 0x%x\n",
1138 scd_queues);
1139 if (iwlagn_txfifo_flush(priv, scd_queues)) {
1140 IWL_ERR(priv, "flush request fail\n");
1141 goto done;
1142 }
7335613a 1143 }
a3a0a599 1144
a0855054 1145 IWL_DEBUG_TX_QUEUES(priv, "wait transmit/flush all frames\n");
a3a0a599 1146 iwl_trans_wait_tx_queue_empty(priv->trans, scd_queues);
7335613a 1147done:
b1eea297 1148 mutex_unlock(&priv->mutex);
7335613a
WYG		 1149 IWL_DEBUG_MAC80211(priv, "leave\n");
1150}
1151
a8182929
EG		 1152static void iwlagn_mac_event_callback(struct ieee80211_hw *hw,
1153 struct ieee80211_vif *vif,
1154 const struct ieee80211_event *event)
7335613a 1155{
d0f76d68 1156 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a 1157
a8182929
EG		 1158 if (event->type != RSSI_EVENT)
1159 return;
1160
7335613a 1161 IWL_DEBUG_MAC80211(priv, "enter\n");
7335613a 1162
0d8877a1
JB		 1163 if (priv->lib->bt_params &&
1164 priv->lib->bt_params->advanced_bt_coexist) {
a8182929 1165 if (event->u.rssi.data == RSSI_EVENT_LOW)
7335613a 1166 priv->bt_enable_pspoll = true;
a8182929 1167 else if (event->u.rssi.data == RSSI_EVENT_HIGH)
7335613a
WYG		 1168 priv->bt_enable_pspoll = false;
1169
6e70d560 1170 queue_work(priv->workqueue, &priv->bt_runtime_config);
7335613a
WYG		 1171 } else {
1172 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
1173 "ignoring RSSI callback\n");
1174 }
1175
7335613a
WYG		 1176 IWL_DEBUG_MAC80211(priv, "leave\n");
1177}
1178
aca86268
JB		 1179static int iwlagn_mac_set_tim(struct ieee80211_hw *hw,
1180 struct ieee80211_sta *sta, bool set)
7335613a 1181{
d0f76d68 1182 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a 1183
1ee158d8 1184 queue_work(priv->workqueue, &priv->beacon_update);
7335613a
WYG		 1185
1186 return 0;
1187}
1188
aca86268
JB		 1189static int iwlagn_mac_conf_tx(struct ieee80211_hw *hw,
1190 struct ieee80211_vif *vif, u16 queue,
1191 const struct ieee80211_tx_queue_params *params)
0b7a4c78 1192{
d0f76d68 1193 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
0b7a4c78
WYG		 1194 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1195 struct iwl_rxon_context *ctx = vif_priv->ctx;
0b7a4c78
WYG		 1196 int q;
1197
1198 if (WARN_ON(!ctx))
1199 return -EINVAL;
1200
1201 IWL_DEBUG_MAC80211(priv, "enter\n");
1202
83626404 1203 if (!iwl_is_ready_rf(priv)) {
0b7a4c78
WYG		 1204 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
1205 return -EIO;
1206 }
1207
1208 if (queue >= AC_NUM) {
1209 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
1210 return 0;
1211 }
1212
1213 q = AC_NUM - 1 - queue;
1214
b1eea297 1215 mutex_lock(&priv->mutex);
0b7a4c78
WYG		 1216
1217 ctx->qos_data.def_qos_parm.ac[q].cw_min =
1218 cpu_to_le16(params->cw_min);
1219 ctx->qos_data.def_qos_parm.ac[q].cw_max =
1220 cpu_to_le16(params->cw_max);
1221 ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
1222 ctx->qos_data.def_qos_parm.ac[q].edca_txop =
1223 cpu_to_le16((params->txop * 32));
1224
1225 ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0;
1226
b1eea297 1227 mutex_unlock(&priv->mutex);
0b7a4c78
WYG		 1228
1229 IWL_DEBUG_MAC80211(priv, "leave\n");
1230 return 0;
1231}
1232
aca86268 1233static int iwlagn_mac_tx_last_beacon(struct ieee80211_hw *hw)
0b7a4c78 1234{
d0f76d68 1235 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
0b7a4c78
WYG		 1236
1237 return priv->ibss_manager == IWL_IBSS_MANAGER;
1238}
1239
1240static int iwl_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
1241{
1242 iwl_connection_init_rx_config(priv, ctx);
1243
1244 iwlagn_set_rxon_chain(priv, ctx);
1245
1246 return iwlagn_commit_rxon(priv, ctx);
1247}
1248
aca86268
JB		 1249static int iwl_setup_interface(struct iwl_priv *priv,
1250 struct iwl_rxon_context *ctx)
0b7a4c78
WYG		 1251{
1252 struct ieee80211_vif *vif = ctx->vif;
1479177b 1253 int err, ac;
0b7a4c78 1254
b1eea297 1255 lockdep_assert_held(&priv->mutex);
0b7a4c78
WYG		 1256
1257 /*
1258 * This variable will be correct only when there's just
1259 * a single context, but all code using it is for hardware
1260 * that supports only one context.
1261 */
1262 priv->iw_mode = vif->type;
1263
1264 ctx->is_active = true;
1265
1266 err = iwl_set_mode(priv, ctx);
1267 if (err) {
1268 if (!ctx->always_active)
1269 ctx->is_active = false;
1270 return err;
1271 }
1272
0d8877a1 1273 if (priv->lib->bt_params && priv->lib->bt_params->advanced_bt_coexist &&
0b7a4c78
WYG		 1274 vif->type == NL80211_IFTYPE_ADHOC) {
1275 /*
1276 * pretend to have high BT traffic as long as we
1277 * are operating in IBSS mode, as this will cause
1278 * the rate scaling etc. to behave as intended.
1279 */
1280 priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
1281 }
1282
1479177b
JB		 1283 /* set up queue mappings */
1284 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
1285 vif->hw_queue[ac] = ctx->ac_to_queue[ac];
1286
1287 if (vif->type == NL80211_IFTYPE_AP)
1288 vif->cab_queue = ctx->mcast_queue;
1289 else
1290 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
1291
0b7a4c78
WYG		 1292 return 0;
1293}
1294
1295static int iwlagn_mac_add_interface(struct ieee80211_hw *hw,
1479177b 1296 struct ieee80211_vif *vif)
0b7a4c78 1297{
d0f76d68 1298 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
0b7a4c78
WYG		 1299 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1300 struct iwl_rxon_context *tmp, *ctx = NULL;
1301 int err;
1302 enum nl80211_iftype viftype = ieee80211_vif_type_p2p(vif);
8db4c7e2 1303 bool reset = false;
0b7a4c78
WYG		 1304
1305 IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n",
1306 viftype, vif->addr);
1307
b1eea297 1308 mutex_lock(&priv->mutex);
0b7a4c78 1309
83626404 1310 if (!iwl_is_ready_rf(priv)) {
0b7a4c78
WYG		 1311 IWL_WARN(priv, "Try to add interface when device not ready\n");
1312 err = -EINVAL;
1313 goto out;
1314 }
1315
1316 for_each_context(priv, tmp) {
1317 u32 possible_modes =
1318 tmp->interface_modes | tmp->exclusive_interface_modes;
1319
1320 if (tmp->vif) {
8db4c7e2
SG		 1321 /* On reset we need to add the same interface again */
1322 if (tmp->vif == vif) {
1323 reset = true;
1324 ctx = tmp;
1325 break;
1326 }
1327
0b7a4c78
WYG		 1328 /* check if this busy context is exclusive */
1329 if (tmp->exclusive_interface_modes &
1330 BIT(tmp->vif->type)) {
1331 err = -EINVAL;
1332 goto out;
1333 }
1334 continue;
1335 }
1336
1337 if (!(possible_modes & BIT(viftype)))
1338 continue;
1339
1340 /* have maybe usable context w/o interface */
1341 ctx = tmp;
1342 break;
1343 }
1344
1345 if (!ctx) {
1346 err = -EOPNOTSUPP;
1347 goto out;
1348 }
1349
1350 vif_priv->ctx = ctx;
1351 ctx->vif = vif;
1352
04baaa27
JB		 1353 /*
1354 * In SNIFFER device type, the firmware reports the FCS to
1355 * the host, rather than snipping it off. Unfortunately,
1356 * mac80211 doesn't (yet) provide a per-packet flag for
1357 * this, so that we have to set the hardware flag based
1358 * on the interfaces added. As the monitor interface can
1359 * only be present by itself, and will be removed before
1360 * other interfaces are added, this is safe.
1361 */
1362 if (vif->type == NL80211_IFTYPE_MONITOR)
30686bf7 1363 ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
04baaa27 1364 else
30686bf7 1365 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, priv->hw->flags);
04baaa27 1366
0b7a4c78 1367 err = iwl_setup_interface(priv, ctx);
8db4c7e2 1368 if (!err || reset)
0b7a4c78
WYG		 1369 goto out;
1370
1371 ctx->vif = NULL;
1372 priv->iw_mode = NL80211_IFTYPE_STATION;
1373 out:
b1eea297 1374 mutex_unlock(&priv->mutex);
0b7a4c78
WYG		 1375
1376 IWL_DEBUG_MAC80211(priv, "leave\n");
1377 return err;
1378}
1379
aca86268
JB		 1380static void iwl_teardown_interface(struct iwl_priv *priv,
1381 struct ieee80211_vif *vif,
1382 bool mode_change)
0b7a4c78
WYG		 1383{
1384 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1385
b1eea297 1386 lockdep_assert_held(&priv->mutex);
0b7a4c78
WYG		 1387
1388 if (priv->scan_vif == vif) {
1389 iwl_scan_cancel_timeout(priv, 200);
1390 iwl_force_scan_end(priv);
1391 }
1392
1393 if (!mode_change) {
1394 iwl_set_mode(priv, ctx);
1395 if (!ctx->always_active)
1396 ctx->is_active = false;
1397 }
1398
1399 /*
1400 * When removing the IBSS interface, overwrite the
1401 * BT traffic load with the stored one from the last
1402 * notification, if any. If this is a device that
1403 * doesn't implement this, this has no effect since
1404 * both values are the same and zero.
1405 */
1406 if (vif->type == NL80211_IFTYPE_ADHOC)
1407 priv->bt_traffic_load = priv->last_bt_traffic_load;
1408}
1409
1410static void iwlagn_mac_remove_interface(struct ieee80211_hw *hw,
1411 struct ieee80211_vif *vif)
1412{
d0f76d68 1413 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
0b7a4c78
WYG		 1414 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1415
1416 IWL_DEBUG_MAC80211(priv, "enter\n");
1417
b1eea297 1418 mutex_lock(&priv->mutex);
0b7a4c78 1419
b9de521f 1420 WARN_ON(ctx->vif != vif);
0b7a4c78
WYG		 1421 ctx->vif = NULL;
1422
1423 iwl_teardown_interface(priv, vif, false);
1424
b1eea297 1425 mutex_unlock(&priv->mutex);
0b7a4c78
WYG		 1426
1427 IWL_DEBUG_MAC80211(priv, "leave\n");
1428
1429}
1430
1431static int iwlagn_mac_change_interface(struct ieee80211_hw *hw,
e75dac92
JB		 1432 struct ieee80211_vif *vif,
1433 enum nl80211_iftype newtype, bool newp2p)
0b7a4c78 1434{
d0f76d68 1435 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
e75dac92 1436 struct iwl_rxon_context *ctx, *tmp;
0b7a4c78
WYG		 1437 enum nl80211_iftype newviftype = newtype;
1438 u32 interface_modes;
1439 int err;
1440
1441 IWL_DEBUG_MAC80211(priv, "enter\n");
1442
1443 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1444
b1eea297 1445 mutex_lock(&priv->mutex);
0b7a4c78 1446
e75dac92
JB		 1447 ctx = iwl_rxon_ctx_from_vif(vif);
1448
1449 /*
1450 * To simplify this code, only support changes on the
1451 * BSS context. The PAN context is usually reassigned
1452 * by creating/removing P2P interfaces anyway.
1453 */
1454 if (ctx->ctxid != IWL_RXON_CTX_BSS) {
1455 err = -EBUSY;
1456 goto out;
1457 }
1458
83626404 1459 if (!ctx->vif || !iwl_is_ready_rf(priv)) {
0b7a4c78
WYG		 1460 /*
1461 * Huh? But wait ... this can maybe happen when
1462 * we're in the middle of a firmware restart!
1463 */
1464 err = -EBUSY;
1465 goto out;
1466 }
1467
e75dac92 1468 /* Check if the switch is supported in the same context */
0b7a4c78 1469 interface_modes = ctx->interface_modes | ctx->exclusive_interface_modes;
0b7a4c78
WYG		 1470 if (!(interface_modes & BIT(newtype))) {
1471 err = -EBUSY;
1472 goto out;
1473 }
1474
0b7a4c78
WYG		 1475 if (ctx->exclusive_interface_modes & BIT(newtype)) {
1476 for_each_context(priv, tmp) {
1477 if (ctx == tmp)
1478 continue;
1479
e75dac92 1480 if (!tmp->is_active)
0b7a4c78
WYG		 1481 continue;
1482
1483 /*
1484 * The current mode switch would be exclusive, but
1485 * another context is active ... refuse the switch.
1486 */
1487 err = -EBUSY;
1488 goto out;
1489 }
1490 }
1491
1492 /* success */
1493 iwl_teardown_interface(priv, vif, true);
1494 vif->type = newviftype;
1495 vif->p2p = newp2p;
1496 err = iwl_setup_interface(priv, ctx);
1497 WARN_ON(err);
1498 /*
1499 * We've switched internally, but submitting to the
1500 * device may have failed for some reason. Mask this
1501 * error, because otherwise mac80211 will not switch
1502 * (and set the interface type back) and we'll be
1503 * out of sync with it.
1504 */
1505 err = 0;
1506
1507 out:
b1eea297 1508 mutex_unlock(&priv->mutex);
0b7a4c78
WYG		 1509 IWL_DEBUG_MAC80211(priv, "leave\n");
1510
1511 return err;
1512}
1513
aca86268
JB		 1514static int iwlagn_mac_hw_scan(struct ieee80211_hw *hw,
1515 struct ieee80211_vif *vif,
c56ef672 1516 struct ieee80211_scan_request *hw_req)
ba4c5319 1517{
d0f76d68 1518 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
c56ef672 1519 struct cfg80211_scan_request *req = &hw_req->req;
ba4c5319
WYG		 1520 int ret;
1521
1522 IWL_DEBUG_MAC80211(priv, "enter\n");
1523
1524 if (req->n_channels == 0)
1525 return -EINVAL;
1526
b1eea297 1527 mutex_lock(&priv->mutex);
ba4c5319
WYG		 1528
1529 /*
1530 * If an internal scan is in progress, just set
1531 * up the scan_request as per above.
1532 */
1533 if (priv->scan_type != IWL_SCAN_NORMAL) {
1534 IWL_DEBUG_SCAN(priv,
1535 "SCAN request during internal scan - defer\n");
1536 priv->scan_request = req;
1537 priv->scan_vif = vif;
1538 ret = 0;
1539 } else {
1540 priv->scan_request = req;
1541 priv->scan_vif = vif;
1542 /*
1543 * mac80211 will only ask for one band at a time
1544 * so using channels[0] here is ok
1545 */
1546 ret = iwl_scan_initiate(priv, vif, IWL_SCAN_NORMAL,
1547 req->channels[0]->band);
1548 if (ret) {
1549 priv->scan_request = NULL;
1550 priv->scan_vif = NULL;
1551 }
1552 }
1553
1554 IWL_DEBUG_MAC80211(priv, "leave\n");
1555
b1eea297 1556 mutex_unlock(&priv->mutex);
ba4c5319
WYG		 1557
1558 return ret;
1559}
1560
76b29331
WYG		 1561static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1562{
9451ca1a
JB		 1563 struct iwl_addsta_cmd cmd = {
1564 .mode = STA_CONTROL_MODIFY_MSK,
1565 .station_flags_msk = STA_FLG_PWR_SAVE_MSK,
1566 .sta.sta_id = sta_id,
1567 };
76b29331 1568
9451ca1a 1569 iwl_send_add_sta(priv, &cmd, CMD_ASYNC);
76b29331
WYG		 1570}
1571
aca86268
JB		 1572static void iwlagn_mac_sta_notify(struct ieee80211_hw *hw,
1573 struct ieee80211_vif *vif,
1574 enum sta_notify_cmd cmd,
1575 struct ieee80211_sta *sta)
76b29331 1576{
d0f76d68 1577 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
76b29331
WYG		 1578 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
1579 int sta_id;
1580
1581 IWL_DEBUG_MAC80211(priv, "enter\n");
1582
1583 switch (cmd) {
1584 case STA_NOTIFY_SLEEP:
1585 WARN_ON(!sta_priv->client);
1586 sta_priv->asleep = true;
1587 if (atomic_read(&sta_priv->pending_frames) > 0)
1588 ieee80211_sta_block_awake(hw, sta, true);
1589 break;
1590 case STA_NOTIFY_AWAKE:
1591 WARN_ON(!sta_priv->client);
1592 if (!sta_priv->asleep)
1593 break;
1594 sta_priv->asleep = false;
1595 sta_id = iwl_sta_id(sta);
1596 if (sta_id != IWL_INVALID_STATION)
1597 iwl_sta_modify_ps_wake(priv, sta_id);
1598 break;
1599 default:
1600 break;
1601 }
1602 IWL_DEBUG_MAC80211(priv, "leave\n");
1603}
1604
e5209263 1605const struct ieee80211_ops iwlagn_hw_ops = {
7335613a
WYG		 1606 .tx = iwlagn_mac_tx,
1607 .start = iwlagn_mac_start,
1608 .stop = iwlagn_mac_stop,
1609#ifdef CONFIG_PM_SLEEP
1610 .suspend = iwlagn_mac_suspend,
1611 .resume = iwlagn_mac_resume,
76ed2edd 1612 .set_wakeup = iwlagn_mac_set_wakeup,
7335613a
WYG		 1613#endif
1614 .add_interface = iwlagn_mac_add_interface,
1615 .remove_interface = iwlagn_mac_remove_interface,
1616 .change_interface = iwlagn_mac_change_interface,
1617 .config = iwlagn_mac_config,
1618 .configure_filter = iwlagn_configure_filter,
1619 .set_key = iwlagn_mac_set_key,
1620 .update_tkip_key = iwlagn_mac_update_tkip_key,
1621 .set_rekey_data = iwlagn_mac_set_rekey_data,
1622 .conf_tx = iwlagn_mac_conf_tx,
1623 .bss_info_changed = iwlagn_bss_info_changed,
1624 .ampdu_action = iwlagn_mac_ampdu_action,
1625 .hw_scan = iwlagn_mac_hw_scan,
1626 .sta_notify = iwlagn_mac_sta_notify,
fb5fe5b9 1627 .sta_state = iwlagn_mac_sta_state,
7335613a
WYG		 1628 .channel_switch = iwlagn_mac_channel_switch,
1629 .flush = iwlagn_mac_flush,
1630 .tx_last_beacon = iwlagn_mac_tx_last_beacon,
a8182929 1631 .event_callback = iwlagn_mac_event_callback,
7335613a
WYG		 1632 .set_tim = iwlagn_mac_set_tim,
1633};
1634
1635/* This function both allocates and initializes hw and priv. */
1636struct ieee80211_hw *iwl_alloc_all(void)
1637{
1638 struct iwl_priv *priv;
d0f76d68 1639 struct iwl_op_mode *op_mode;
7335613a
WYG		 1640 /* mac80211 allocates memory for this device instance, including
1641 * space for this driver's private structure */
1642 struct ieee80211_hw *hw;
1643
d0f76d68
EG		 1644 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv) +
1645 sizeof(struct iwl_op_mode), &iwlagn_hw_ops);
7335613a
WYG		 1646 if (!hw)
1647 goto out;
1648
d0f76d68
EG		 1649 op_mode = hw->priv;
1650 priv = IWL_OP_MODE_GET_DVM(op_mode);
7335613a
WYG		 1651 priv->hw = hw;
1652
1653out:
1654 return hw;
1655}
Linux kernel - Deliverables
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