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mac80211: protect TDLS discovery session
[deliverable/linux.git] / drivers / net / wireless / 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:
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>
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 */
107 hw->flags = IEEE80211_HW_SIGNAL_DBM |
108 IEEE80211_HW_AMPDU_AGGREGATION |
c65dd147 109 IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC |
7335613a 110 IEEE80211_HW_SPECTRUM_MGMT |
1479177b
JB		 111 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
112 IEEE80211_HW_QUEUE_CONTROL |
113 IEEE80211_HW_SUPPORTS_PS |
114 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
f1e3e051 115 IEEE80211_HW_WANT_MONITOR_VIF;
1479177b
JB		 116
117 hw->offchannel_tx_hw_queue = IWL_AUX_QUEUE;
53e1116e 118 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FMT;
7335613a
WYG		 119
120 /*
121 * Including the following line will crash some AP's. This
122 * workaround removes the stimulus which causes the crash until
123 * the AP software can be fixed.
124 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
125 */
126
b7998c8b 127 if (priv->nvm_data->sku_cap_11n_enable)
7335613a
WYG		 128 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
129 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
130
686681b0
JB		 131 /*
132 * Enable 11w if advertised by firmware and software crypto
133 * is not enabled (as the firmware will interpret some mgmt
134 * packets, so enabling it with software crypto isn't safe)
135 */
136 if (priv->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
137 !iwlwifi_mod_params.sw_crypto)
7335613a
WYG		 138 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
139
140 hw->sta_data_size = sizeof(struct iwl_station_priv);
141 hw->vif_data_size = sizeof(struct iwl_vif_priv);
142
143 for_each_context(priv, ctx) {
144 hw->wiphy->interface_modes |= ctx->interface_modes;
145 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
146 }
147
148 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
149
da4f87f0 150 if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
7335613a
WYG		 151 hw->wiphy->iface_combinations =
152 iwlagn_iface_combinations_dualmode;
153 hw->wiphy->n_iface_combinations =
154 ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
155 }
156
a2f73b6c
LR		 157 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
158 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
159 REGULATORY_DISABLE_BEACON_HINTS;
7335613a 160
fcb6ff5e 161#ifdef CONFIG_PM_SLEEP
6dfa8d01 162 if (priv->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
ddaf5a5b
JB		 163 priv->trans->ops->d3_suspend &&
164 priv->trans->ops->d3_resume &&
68e8dfda 165 device_can_wakeup(priv->trans->dev)) {
964dc9e2
JB		 166 priv->wowlan_support.flags = WIPHY_WOWLAN_MAGIC_PKT |
167 WIPHY_WOWLAN_DISCONNECT |
168 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
169 WIPHY_WOWLAN_RFKILL_RELEASE;
65de7e84 170 if (!iwlwifi_mod_params.sw_crypto)
964dc9e2 171 priv->wowlan_support.flags |=
7335613a
WYG		 172 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
173 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
174
964dc9e2
JB		 175 priv->wowlan_support.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
176 priv->wowlan_support.pattern_min_len =
7335613a 177 IWLAGN_WOWLAN_MIN_PATTERN_LEN;
964dc9e2 178 priv->wowlan_support.pattern_max_len =
7335613a 179 IWLAGN_WOWLAN_MAX_PATTERN_LEN;
964dc9e2 180 hw->wiphy->wowlan = &priv->wowlan_support;
7335613a 181 }
fcb6ff5e 182#endif
7335613a 183
65de7e84 184 if (iwlwifi_mod_params.power_save)
7335613a
WYG		 185 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
186 else
187 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
188
189 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
4f9bfbb1
DS		 190 /* we create the 802.11 header and a max-length SSID element */
191 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 34;
7335613a 192
1479177b
JB		 193 /*
194 * We don't use all queues: 4 and 9 are unused and any
195 * aggregation queue gets mapped down to the AC queue.
196 */
197 hw->queues = IWLAGN_FIRST_AMPDU_QUEUE;
7335613a
WYG		 198
199 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
200
b7998c8b 201 if (priv->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
7335613a 202 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
b7998c8b
EL		 203 &priv->nvm_data->bands[IEEE80211_BAND_2GHZ];
204 if (priv->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
7335613a 205 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
b7998c8b 206 &priv->nvm_data->bands[IEEE80211_BAND_5GHZ];
7335613a 207
68e8dfda 208 hw->wiphy->hw_version = priv->trans->hw_id;
0ba958eb 209
7335613a
WYG		 210 iwl_leds_init(priv);
211
212 ret = ieee80211_register_hw(priv->hw);
213 if (ret) {
214 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
0e1fa7ef 215 iwl_leds_exit(priv);
7335613a
WYG		 216 return ret;
217 }
218 priv->mac80211_registered = 1;
219
220 return 0;
221}
222
09af1403
DF		 223void iwlagn_mac_unregister(struct iwl_priv *priv)
224{
225 if (!priv->mac80211_registered)
226 return;
227 iwl_leds_exit(priv);
228 ieee80211_unregister_hw(priv->hw);
229 priv->mac80211_registered = 0;
230}
231
7335613a
WYG		 232static int __iwl_up(struct iwl_priv *priv)
233{
234 struct iwl_rxon_context *ctx;
235 int ret;
236
b1eea297 237 lockdep_assert_held(&priv->mutex);
7335613a 238
83626404 239 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
7335613a
WYG		 240 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
241 return -EIO;
242 }
243
244 for_each_context(priv, ctx) {
245 ret = iwlagn_alloc_bcast_station(priv, ctx);
246 if (ret) {
247 iwl_dealloc_bcast_stations(priv);
248 return ret;
249 }
250 }
251
e1991885 252 ret = iwl_run_init_ucode(priv);
7335613a
WYG		 253 if (ret) {
254 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
255 goto error;
256 }
257
e1991885 258 ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_REGULAR);
7335613a
WYG		 259 if (ret) {
260 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
261 goto error;
262 }
263
264 ret = iwl_alive_start(priv);
265 if (ret)
266 goto error;
267 return 0;
268
269 error:
83626404 270 set_bit(STATUS_EXIT_PENDING, &priv->status);
78e5a464 271 iwl_down(priv);
83626404 272 clear_bit(STATUS_EXIT_PENDING, &priv->status);
7335613a
WYG		 273
274 IWL_ERR(priv, "Unable to initialize device.\n");
275 return ret;
276}
277
278static int iwlagn_mac_start(struct ieee80211_hw *hw)
279{
d0f76d68 280 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 281 int ret;
282
283 IWL_DEBUG_MAC80211(priv, "enter\n");
284
285 /* we should be verifying the device is ready to be opened */
b1eea297 286 mutex_lock(&priv->mutex);
7335613a 287 ret = __iwl_up(priv);
b1eea297 288 mutex_unlock(&priv->mutex);
7335613a
WYG		 289 if (ret)
290 return ret;
291
292 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
293
294 /* Now we should be done, and the READY bit should be set. */
83626404 295 if (WARN_ON(!test_bit(STATUS_READY, &priv->status)))
7335613a
WYG		 296 ret = -EIO;
297
298 iwlagn_led_enable(priv);
299
300 priv->is_open = 1;
301 IWL_DEBUG_MAC80211(priv, "leave\n");
302 return 0;
303}
304
aca86268 305static void iwlagn_mac_stop(struct ieee80211_hw *hw)
7335613a 306{
d0f76d68 307 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 308
309 IWL_DEBUG_MAC80211(priv, "enter\n");
310
311 if (!priv->is_open)
312 return;
313
314 priv->is_open = 0;
315
b1eea297 316 mutex_lock(&priv->mutex);
7335613a 317 iwl_down(priv);
b1eea297 318 mutex_unlock(&priv->mutex);
78e5a464
EG		 319
320 iwl_cancel_deferred_work(priv);
7335613a 321
1ee158d8 322 flush_workqueue(priv->workqueue);
7335613a 323
7335613a
WYG		 324 IWL_DEBUG_MAC80211(priv, "leave\n");
325}
326
aca86268
JB		 327static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
328 struct ieee80211_vif *vif,
329 struct cfg80211_gtk_rekey_data *data)
7335613a 330{
d0f76d68 331 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a 332
65de7e84 333 if (iwlwifi_mod_params.sw_crypto)
7335613a
WYG		 334 return;
335
336 IWL_DEBUG_MAC80211(priv, "enter\n");
b1eea297 337 mutex_lock(&priv->mutex);
7335613a
WYG		 338
339 if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
340 goto out;
341
342 memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
343 memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
344 priv->replay_ctr =
345 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
346 priv->have_rekey_data = true;
347
348 out:
b1eea297 349 mutex_unlock(&priv->mutex);
7335613a
WYG		 350 IWL_DEBUG_MAC80211(priv, "leave\n");
351}
352
353#ifdef CONFIG_PM_SLEEP
7335613a 354
aca86268
JB		 355static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
356 struct cfg80211_wowlan *wowlan)
7335613a 357{
d0f76d68 358 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a 359 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
023ca58f 360 int ret;
7335613a
WYG		 361
362 if (WARN_ON(!wowlan))
363 return -EINVAL;
364
365 IWL_DEBUG_MAC80211(priv, "enter\n");
b1eea297 366 mutex_lock(&priv->mutex);
7335613a
WYG		 367
368 /* Don't attempt WoWLAN when not associated, tear down instead. */
369 if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
370 !iwl_is_associated_ctx(ctx)) {
371 ret = 1;
372 goto out;
373 }
374
ea886a60 375 ret = iwlagn_suspend(priv, wowlan);
7335613a
WYG		 376 if (ret)
377 goto error;
378
8ade6285
JB		 379 /* let the ucode operate on its own */
380 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_SET,
381 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
382
debff618 383 iwl_trans_d3_suspend(priv->trans, false);
7335613a
WYG		 384
385 goto out;
386
387 error:
15b86bff 388 priv->wowlan = false;
7335613a
WYG		 389 iwlagn_prepare_restart(priv);
390 ieee80211_restart_hw(priv->hw);
391 out:
b1eea297 392 mutex_unlock(&priv->mutex);
7335613a
WYG		 393 IWL_DEBUG_MAC80211(priv, "leave\n");
394
395 return ret;
396}
397
5718d27f
JB		 398struct iwl_resume_data {
399 struct iwl_priv *priv;
400 struct iwlagn_wowlan_status *cmd;
401 bool valid;
402};
403
404static bool iwl_resume_status_fn(struct iwl_notif_wait_data *notif_wait,
405 struct iwl_rx_packet *pkt, void *data)
406{
407 struct iwl_resume_data *resume_data = data;
408 struct iwl_priv *priv = resume_data->priv;
5718d27f 409
65b30348 410 if (iwl_rx_packet_payload_len(pkt) != sizeof(*resume_data->cmd)) {
5718d27f
JB		 411 IWL_ERR(priv, "rx wrong size data\n");
412 return true;
413 }
414 memcpy(resume_data->cmd, pkt->data, sizeof(*resume_data->cmd));
415 resume_data->valid = true;
416
417 return true;
418}
419
7335613a
WYG		 420static int iwlagn_mac_resume(struct ieee80211_hw *hw)
421{
d0f76d68 422 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 423 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
424 struct ieee80211_vif *vif;
5718d27f
JB		 425 u32 base;
426 int ret;
427 enum iwl_d3_status d3_status;
428 struct error_table_start {
429 /* cf. struct iwl_error_event_table */
430 u32 valid;
431 u32 error_id;
432 } err_info;
433 struct iwl_notification_wait status_wait;
434 static const u8 status_cmd[] = {
435 REPLY_WOWLAN_GET_STATUS,
436 };
437 struct iwlagn_wowlan_status status_data = {};
438 struct iwl_resume_data resume_data = {
439 .priv = priv,
440 .cmd = &status_data,
441 .valid = false,
442 };
443 struct cfg80211_wowlan_wakeup wakeup = {
444 .pattern_idx = -1,
445 };
446#ifdef CONFIG_IWLWIFI_DEBUGFS
447 const struct fw_img *img;
448#endif
7335613a
WYG		 449
450 IWL_DEBUG_MAC80211(priv, "enter\n");
b1eea297 451 mutex_lock(&priv->mutex);
7335613a 452
5718d27f
JB		 453 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
454 vif = ctx->vif;
455
debff618 456 ret = iwl_trans_d3_resume(priv->trans, &d3_status, false);
5718d27f
JB		 457 if (ret)
458 goto out_unlock;
459
460 if (d3_status != IWL_D3_STATUS_ALIVE) {
461 IWL_INFO(priv, "Device was reset during suspend\n");
462 goto out_unlock;
463 }
7335613a 464
8ade6285
JB		 465 /* uCode is no longer operating by itself */
466 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
467 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
468
2fdfc476 469 base = priv->device_pointers.error_event_table;
5718d27f
JB		 470 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
471 IWL_WARN(priv, "Invalid error table during resume!\n");
472 goto out_unlock;
473 }
474
475 iwl_trans_read_mem_bytes(priv->trans, base,
476 &err_info, sizeof(err_info));
477
478 if (err_info.valid) {
479 IWL_INFO(priv, "error table is valid (%d, 0x%x)\n",
480 err_info.valid, err_info.error_id);
481 if (err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
482 wakeup.rfkill_release = true;
483 ieee80211_report_wowlan_wakeup(vif, &wakeup,
484 GFP_KERNEL);
7335613a 485 }
5718d27f
JB		 486 goto out_unlock;
487 }
7335613a
WYG		 488
489#ifdef CONFIG_IWLWIFI_DEBUGFS
5718d27f
JB		 490 img = &priv->fw->img[IWL_UCODE_WOWLAN];
491 if (!priv->wowlan_sram)
492 priv->wowlan_sram =
493 kzalloc(img->sec[IWL_UCODE_SECTION_DATA].len,
494 GFP_KERNEL);
495
496 if (priv->wowlan_sram)
497 iwl_trans_read_mem(priv->trans, 0x800000,
498 priv->wowlan_sram,
499 img->sec[IWL_UCODE_SECTION_DATA].len / 4);
7335613a 500#endif
7335613a 501
5718d27f
JB		 502 /*
503 * This is very strange. The GET_STATUS command is sent but the device
504 * doesn't reply properly, it seems it doesn't close the RBD so one is
505 * always left open ... As a result, we need to send another command
506 * and have to reset the driver afterwards. As we need to switch to
507 * runtime firmware again that'll happen.
508 */
509
510 iwl_init_notification_wait(&priv->notif_wait, &status_wait, status_cmd,
511 ARRAY_SIZE(status_cmd), iwl_resume_status_fn,
512 &resume_data);
513
514 iwl_dvm_send_cmd_pdu(priv, REPLY_WOWLAN_GET_STATUS, CMD_ASYNC, 0, NULL);
515 iwl_dvm_send_cmd_pdu(priv, REPLY_ECHO, CMD_ASYNC, 0, NULL);
516 /* an RBD is left open in the firmware now! */
517
518 ret = iwl_wait_notification(&priv->notif_wait, &status_wait, HZ/5);
519 if (ret)
520 goto out_unlock;
521
522 if (resume_data.valid && priv->contexts[IWL_RXON_CTX_BSS].vif) {
523 u32 reasons = le32_to_cpu(status_data.wakeup_reason);
524 struct cfg80211_wowlan_wakeup *wakeup_report;
525
526 IWL_INFO(priv, "WoWLAN wakeup reason(s): 0x%.8x\n", reasons);
527
528 if (reasons) {
529 if (reasons & IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET)
530 wakeup.magic_pkt = true;
531 if (reasons & IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH)
532 wakeup.pattern_idx = status_data.pattern_number;
533 if (reasons & (IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
534 IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE))
535 wakeup.disconnect = true;
536 if (reasons & IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL)
537 wakeup.gtk_rekey_failure = true;
538 if (reasons & IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ)
539 wakeup.eap_identity_req = true;
540 if (reasons & IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE)
541 wakeup.four_way_handshake = true;
542 wakeup_report = &wakeup;
543 } else {
544 wakeup_report = NULL;
545 }
546
547 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
548 }
7335613a 549
15b86bff 550 priv->wowlan = false;
7335613a 551
7335613a
WYG		 552 iwlagn_prepare_restart(priv);
553
554 memset((void *)&ctx->active, 0, sizeof(ctx->active));
555 iwl_connection_init_rx_config(priv, ctx);
556 iwlagn_set_rxon_chain(priv, ctx);
557
5718d27f 558 out_unlock:
b1eea297 559 mutex_unlock(&priv->mutex);
7335613a
WYG		 560 IWL_DEBUG_MAC80211(priv, "leave\n");
561
562 ieee80211_resume_disconnect(vif);
563
564 return 1;
565}
566
76ed2edd
JB		 567static void iwlagn_mac_set_wakeup(struct ieee80211_hw *hw, bool enabled)
568{
569 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
570
571 device_set_wakeup_enable(priv->trans->dev, enabled);
572}
7335613a
WYG		 573#endif
574
36323f81
TH		 575static void iwlagn_mac_tx(struct ieee80211_hw *hw,
576 struct ieee80211_tx_control *control,
577 struct sk_buff *skb)
7335613a 578{
d0f76d68 579 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a 580
36323f81 581 if (iwlagn_tx_skb(priv, control->sta, skb))
31df3bb7 582 ieee80211_free_txskb(hw, skb);
7335613a
WYG		 583}
584
aca86268
JB		 585static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
586 struct ieee80211_vif *vif,
587 struct ieee80211_key_conf *keyconf,
588 struct ieee80211_sta *sta,
589 u32 iv32, u16 *phase1key)
7335613a 590{
d0f76d68 591 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 592
593 iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
594}
595
aca86268
JB		 596static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
597 struct ieee80211_vif *vif,
598 struct ieee80211_sta *sta,
599 struct ieee80211_key_conf *key)
7335613a 600{
d0f76d68 601 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 602 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
603 struct iwl_rxon_context *ctx = vif_priv->ctx;
604 int ret;
605 bool is_default_wep_key = false;
606
607 IWL_DEBUG_MAC80211(priv, "enter\n");
608
65de7e84 609 if (iwlwifi_mod_params.sw_crypto) {
7335613a
WYG		 610 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
611 return -EOPNOTSUPP;
612 }
613
a7e12c8e
JB		 614 switch (key->cipher) {
615 case WLAN_CIPHER_SUITE_TKIP:
616 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
617 /* fall through */
618 case WLAN_CIPHER_SUITE_CCMP:
619 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
620 break;
621 default:
622 break;
623 }
624
7335613a
WYG		 625 /*
626 * We could program these keys into the hardware as well, but we
627 * don't expect much multicast traffic in IBSS and having keys
628 * for more stations is probably more useful.
629 *
630 * Mark key TX-only and return 0.
631 */
632 if (vif->type == NL80211_IFTYPE_ADHOC &&
633 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
634 key->hw_key_idx = WEP_INVALID_OFFSET;
635 return 0;
636 }
637
638 /* If they key was TX-only, accept deletion */
639 if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
640 return 0;
641
b1eea297 642 mutex_lock(&priv->mutex);
7335613a
WYG		 643 iwl_scan_cancel_timeout(priv, 100);
644
645 BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
646
647 /*
648 * If we are getting WEP group key and we didn't receive any key mapping
649 * so far, we are in legacy wep mode (group key only), otherwise we are
650 * in 1X mode.
651 * In legacy wep mode, we use another host command to the uCode.
652 */
653 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
654 key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
655 if (cmd == SET_KEY)
656 is_default_wep_key = !ctx->key_mapping_keys;
657 else
658 is_default_wep_key =
659 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
660 }
661
662
663 switch (cmd) {
664 case SET_KEY:
665 if (is_default_wep_key) {
666 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
667 break;
668 }
669 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
670 if (ret) {
671 /*
672 * can't add key for RX, but we don't need it
673 * in the device for TX so still return 0
674 */
675 ret = 0;
676 key->hw_key_idx = WEP_INVALID_OFFSET;
677 }
678
679 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
680 break;
681 case DISABLE_KEY:
682 if (is_default_wep_key)
683 ret = iwl_remove_default_wep_key(priv, ctx, key);
684 else
685 ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
686
687 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
688 break;
689 default:
690 ret = -EINVAL;
691 }
692
b1eea297 693 mutex_unlock(&priv->mutex);
7335613a
WYG		 694 IWL_DEBUG_MAC80211(priv, "leave\n");
695
696 return ret;
697}
698
205e2210
EG		 699static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
700{
701 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
702 return false;
703 return true;
704}
705
706static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
707{
708 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
709 return false;
710 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
711 return true;
712
713 /* disabled by default */
714 return false;
715}
716
aca86268
JB		 717static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
718 struct ieee80211_vif *vif,
719 enum ieee80211_ampdu_mlme_action action,
720 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
721 u8 buf_size)
7335613a 722{
d0f76d68 723 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 724 int ret = -EINVAL;
725 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
7335613a
WYG		 726
727 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
728 sta->addr, tid);
729
b7998c8b 730 if (!(priv->nvm_data->sku_cap_11n_enable))
7335613a
WYG		 731 return -EACCES;
732
733 IWL_DEBUG_MAC80211(priv, "enter\n");
b1eea297 734 mutex_lock(&priv->mutex);
7335613a
WYG		 735
736 switch (action) {
737 case IEEE80211_AMPDU_RX_START:
205e2210 738 if (!iwl_enable_rx_ampdu(priv->cfg))
7428994d 739 break;
7335613a
WYG		 740 IWL_DEBUG_HT(priv, "start Rx\n");
741 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
742 break;
743 case IEEE80211_AMPDU_RX_STOP:
744 IWL_DEBUG_HT(priv, "stop Rx\n");
745 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
7335613a
WYG		 746 break;
747 case IEEE80211_AMPDU_TX_START:
4beaf6c2 748 if (!priv->trans->ops->txq_enable)
9eae88fa 749 break;
205e2210 750 if (!iwl_enable_tx_ampdu(priv->cfg))
7428994d 751 break;
7335613a
WYG		 752 IWL_DEBUG_HT(priv, "start Tx\n");
753 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
754 break;
18b559d5
JB		 755 case IEEE80211_AMPDU_TX_STOP_FLUSH:
756 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
2d055afd
EG		 757 IWL_DEBUG_HT(priv, "Flush Tx\n");
758 ret = iwlagn_tx_agg_flush(priv, vif, sta, tid);
759 break;
760 case IEEE80211_AMPDU_TX_STOP_CONT:
7335613a
WYG		 761 IWL_DEBUG_HT(priv, "stop Tx\n");
762 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
763 if ((ret == 0) && (priv->agg_tids_count > 0)) {
764 priv->agg_tids_count--;
765 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
766 priv->agg_tids_count);
767 }
b9ad70da 768 if (!priv->agg_tids_count &&
9e295116 769 priv->hw_params.use_rts_for_aggregation) {
7335613a
WYG		 770 /*
771 * switch off RTS/CTS if it was previously enabled
772 */
773 sta_priv->lq_sta.lq.general_params.flags &=
774 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
775 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
776 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
777 }
778 break;
779 case IEEE80211_AMPDU_TX_OPERATIONAL:
822e8b2a 780 ret = iwlagn_tx_agg_oper(priv, vif, sta, tid, buf_size);
7335613a
WYG		 781 break;
782 }
b1eea297 783 mutex_unlock(&priv->mutex);
7335613a
WYG		 784 IWL_DEBUG_MAC80211(priv, "leave\n");
785 return ret;
786}
787
788static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
789 struct ieee80211_vif *vif,
790 struct ieee80211_sta *sta)
791{
d0f76d68 792 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 793 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
794 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
795 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
fb5fe5b9 796 int ret;
7335613a
WYG		 797 u8 sta_id;
798
7335613a
WYG		 799 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
800 sta->addr);
801 sta_priv->sta_id = IWL_INVALID_STATION;
802
803 atomic_set(&sta_priv->pending_frames, 0);
804 if (vif->type == NL80211_IFTYPE_AP)
805 sta_priv->client = true;
806
807 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
808 is_ap, sta, &sta_id);
809 if (ret) {
810 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
811 sta->addr, ret);
812 /* Should we return success if return code is EEXIST ? */
fb5fe5b9 813 return ret;
7335613a
WYG		 814 }
815
816 sta_priv->sta_id = sta_id;
817
fb5fe5b9
JB		 818 return 0;
819}
820
821static int iwlagn_mac_sta_remove(struct ieee80211_hw *hw,
822 struct ieee80211_vif *vif,
823 struct ieee80211_sta *sta)
824{
825 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
826 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
827 int ret;
828
97420515
JB		 829 IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n", sta->addr);
830
831 if (vif->type == NL80211_IFTYPE_STATION) {
832 /*
833 * Station will be removed from device when the RXON
834 * is set to unassociated -- just deactivate it here
835 * to avoid re-programming it.
836 */
837 ret = 0;
838 iwl_deactivate_station(priv, sta_priv->sta_id, sta->addr);
839 } else {
840 ret = iwl_remove_station(priv, sta_priv->sta_id, sta->addr);
841 if (ret)
842 IWL_DEBUG_QUIET_RFKILL(priv,
843 "Error removing station %pM\n", sta->addr);
844 }
fb5fe5b9
JB		 845 return ret;
846}
847
aca86268
JB		 848static int iwlagn_mac_sta_state(struct ieee80211_hw *hw,
849 struct ieee80211_vif *vif,
850 struct ieee80211_sta *sta,
851 enum ieee80211_sta_state old_state,
852 enum ieee80211_sta_state new_state)
fb5fe5b9
JB		 853{
854 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
ab0bd5b3 855 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
fb5fe5b9 856 enum {
ab0bd5b3 857 NONE, ADD, REMOVE, HT_RATE_INIT, ADD_RATE_INIT,
fb5fe5b9
JB		 858 } op = NONE;
859 int ret;
860
861 IWL_DEBUG_MAC80211(priv, "station %pM state change %d->%d\n",
862 sta->addr, old_state, new_state);
863
b1eea297 864 mutex_lock(&priv->mutex);
fb5fe5b9
JB		 865 if (vif->type == NL80211_IFTYPE_STATION) {
866 if (old_state == IEEE80211_STA_NOTEXIST &&
867 new_state == IEEE80211_STA_NONE)
868 op = ADD;
869 else if (old_state == IEEE80211_STA_NONE &&
870 new_state == IEEE80211_STA_NOTEXIST)
871 op = REMOVE;
872 else if (old_state == IEEE80211_STA_AUTH &&
873 new_state == IEEE80211_STA_ASSOC)
ab0bd5b3 874 op = HT_RATE_INIT;
fb5fe5b9
JB		 875 } else {
876 if (old_state == IEEE80211_STA_AUTH &&
877 new_state == IEEE80211_STA_ASSOC)
878 op = ADD_RATE_INIT;
879 else if (old_state == IEEE80211_STA_ASSOC &&
880 new_state == IEEE80211_STA_AUTH)
881 op = REMOVE;
882 }
883
884 switch (op) {
885 case ADD:
886 ret = iwlagn_mac_sta_add(hw, vif, sta);
eac9ac6d
JB		 887 if (ret)
888 break;
889 /*
890 * Clear the in-progress flag, the AP station entry was added
891 * but we'll initialize LQ only when we've associated (which
892 * would also clear the in-progress flag). This is necessary
893 * in case we never initialize LQ because association fails.
894 */
895 spin_lock_bh(&priv->sta_lock);
896 priv->stations[iwl_sta_id(sta)].used &=
897 ~IWL_STA_UCODE_INPROGRESS;
898 spin_unlock_bh(&priv->sta_lock);
fb5fe5b9
JB		 899 break;
900 case REMOVE:
901 ret = iwlagn_mac_sta_remove(hw, vif, sta);
902 break;
903 case ADD_RATE_INIT:
904 ret = iwlagn_mac_sta_add(hw, vif, sta);
905 if (ret)
906 break;
fb5fe5b9
JB		 907 /* Initialize rate scaling */
908 IWL_DEBUG_INFO(priv,
909 "Initializing rate scaling for station %pM\n",
910 sta->addr);
911 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
912 ret = 0;
913 break;
ab0bd5b3
JB		 914 case HT_RATE_INIT:
915 /* Initialize rate scaling */
916 ret = iwl_sta_update_ht(priv, vif_priv->ctx, sta);
917 if (ret)
918 break;
919 IWL_DEBUG_INFO(priv,
920 "Initializing rate scaling for station %pM\n",
921 sta->addr);
922 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
923 ret = 0;
924 break;
fb5fe5b9
JB		 925 default:
926 ret = 0;
927 break;
928 }
929
930 /*
931 * mac80211 might WARN if we fail, but due the way we
932 * (badly) handle hard rfkill, we might fail here
933 */
83626404 934 if (iwl_is_rfkill(priv))
fb5fe5b9
JB		 935 ret = 0;
936
b1eea297 937 mutex_unlock(&priv->mutex);
7335613a
WYG		 938 IWL_DEBUG_MAC80211(priv, "leave\n");
939
940 return ret;
941}
942
aca86268
JB		 943static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
944 struct ieee80211_channel_switch *ch_switch)
7335613a 945{
d0f76d68 946 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a 947 struct ieee80211_conf *conf = &hw->conf;
85220d71 948 struct ieee80211_channel *channel = ch_switch->chandef.chan;
7335613a
WYG		 949 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
950 /*
951 * MULTI-FIXME
952 * When we add support for multiple interfaces, we need to
953 * revisit this. The channel switch command in the device
954 * only affects the BSS context, but what does that really
955 * mean? And what if we get a CSA on the second interface?
956 * This needs a lot of work.
957 */
958 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
959 u16 ch;
960
961 IWL_DEBUG_MAC80211(priv, "enter\n");
962
b1eea297 963 mutex_lock(&priv->mutex);
7335613a 964
83626404 965 if (iwl_is_rfkill(priv))
7335613a
WYG		 966 goto out;
967
83626404
DF		 968 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
969 test_bit(STATUS_SCANNING, &priv->status) ||
970 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
7335613a
WYG		 971 goto out;
972
973 if (!iwl_is_associated_ctx(ctx))
974 goto out;
975
e9676695 976 if (!priv->lib->set_channel_switch)
7335613a
WYG		 977 goto out;
978
979 ch = channel->hw_value;
980 if (le16_to_cpu(ctx->active.channel) == ch)
981 goto out;
982
7335613a
WYG		 983 priv->current_ht_config.smps = conf->smps_mode;
984
985 /* Configure HT40 channels */
85220d71
JB		 986 switch (cfg80211_get_chandef_type(&ch_switch->chandef)) {
987 case NL80211_CHAN_NO_HT:
988 case NL80211_CHAN_HT20:
7335613a 989 ctx->ht.is_40mhz = false;
85220d71
JB		 990 ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
991 break;
992 case NL80211_CHAN_HT40MINUS:
993 ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
994 ctx->ht.is_40mhz = true;
995 break;
996 case NL80211_CHAN_HT40PLUS:
997 ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
998 ctx->ht.is_40mhz = true;
999 break;
1000 }
7335613a
WYG		 1001
1002 if ((le16_to_cpu(ctx->staging.channel) != ch))
1003 ctx->staging.flags = 0;
1004
1005 iwl_set_rxon_channel(priv, channel, ctx);
1006 iwl_set_rxon_ht(priv, ht_conf);
1007 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
1008
7335613a
WYG		 1009 /*
1010 * at this point, staging_rxon has the
1011 * configuration for channel switch
1012 */
83626404 1013 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
7335613a 1014 priv->switch_channel = cpu_to_le16(ch);
e9676695 1015 if (priv->lib->set_channel_switch(priv, ch_switch)) {
83626404 1016 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
7335613a
WYG		 1017 priv->switch_channel = 0;
1018 ieee80211_chswitch_done(ctx->vif, false);
1019 }
1020
1021out:
b1eea297 1022 mutex_unlock(&priv->mutex);
7335613a
WYG		 1023 IWL_DEBUG_MAC80211(priv, "leave\n");
1024}
1025
bedec3a6
MV		 1026void iwl_chswitch_done(struct iwl_priv *priv, bool is_success)
1027{
1028 /*
1029 * MULTI-FIXME
1030 * See iwlagn_mac_channel_switch.
1031 */
1032 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1033
1034 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1035 return;
1036
9186a1fd
SG		 1037 if (!test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
1038 return;
1039
1040 if (ctx->vif)
bedec3a6
MV		 1041 ieee80211_chswitch_done(ctx->vif, is_success);
1042}
1043
aca86268
JB		 1044static void iwlagn_configure_filter(struct ieee80211_hw *hw,
1045 unsigned int changed_flags,
1046 unsigned int *total_flags,
1047 u64 multicast)
7335613a 1048{
d0f76d68 1049 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 1050 __le32 filter_or = 0, filter_nand = 0;
1051 struct iwl_rxon_context *ctx;
1052
1053#define CHK(test, flag) do { \
1054 if (*total_flags & (test)) \
1055 filter_or |= (flag); \
1056 else \
1057 filter_nand |= (flag); \
1058 } while (0)
1059
1060 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
1061 changed_flags, *total_flags);
1062
1063 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
1064 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
1065 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
1066 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
1067
1068#undef CHK
1069
b1eea297 1070 mutex_lock(&priv->mutex);
7335613a
WYG		 1071
1072 for_each_context(priv, ctx) {
1073 ctx->staging.filter_flags &= ~filter_nand;
1074 ctx->staging.filter_flags |= filter_or;
1075
1076 /*
1077 * Not committing directly because hardware can perform a scan,
1078 * but we'll eventually commit the filter flags change anyway.
1079 */
1080 }
1081
b1eea297 1082 mutex_unlock(&priv->mutex);
7335613a
WYG		 1083
1084 /*
1085 * Receiving all multicast frames is always enabled by the
1086 * default flags setup in iwl_connection_init_rx_config()
1087 * since we currently do not support programming multicast
1088 * filters into the device.
1089 */
1090 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
1091 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
1092}
1093
77be2c54
EG		 1094static void iwlagn_mac_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1095 u32 queues, bool drop)
7335613a 1096{
d0f76d68 1097 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a 1098
b1eea297 1099 mutex_lock(&priv->mutex);
7335613a
WYG		 1100 IWL_DEBUG_MAC80211(priv, "enter\n");
1101
83626404 1102 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
7335613a
WYG		 1103 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
1104 goto done;
1105 }
83626404 1106 if (iwl_is_rfkill(priv)) {
7335613a
WYG		 1107 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
1108 goto done;
1109 }
1110
1111 /*
1112 * mac80211 will not push any more frames for transmit
1113 * until the flush is completed
1114 */
1115 if (drop) {
1116 IWL_DEBUG_MAC80211(priv, "send flush command\n");
2d055afd 1117 if (iwlagn_txfifo_flush(priv, 0)) {
7335613a
WYG		 1118 IWL_ERR(priv, "flush request fail\n");
1119 goto done;
1120 }
1121 }
1122 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
3cafdbe6 1123 iwl_trans_wait_tx_queue_empty(priv->trans, 0xffffffff);
7335613a 1124done:
b1eea297 1125 mutex_unlock(&priv->mutex);
7335613a
WYG		 1126 IWL_DEBUG_MAC80211(priv, "leave\n");
1127}
1128
aca86268 1129static void iwlagn_mac_rssi_callback(struct ieee80211_hw *hw,
887da917 1130 struct ieee80211_vif *vif,
aca86268 1131 enum ieee80211_rssi_event rssi_event)
7335613a 1132{
d0f76d68 1133 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a
WYG		 1134
1135 IWL_DEBUG_MAC80211(priv, "enter\n");
b1eea297 1136 mutex_lock(&priv->mutex);
7335613a 1137
0d8877a1
JB		 1138 if (priv->lib->bt_params &&
1139 priv->lib->bt_params->advanced_bt_coexist) {
7335613a
WYG		 1140 if (rssi_event == RSSI_EVENT_LOW)
1141 priv->bt_enable_pspoll = true;
1142 else if (rssi_event == RSSI_EVENT_HIGH)
1143 priv->bt_enable_pspoll = false;
1144
1145 iwlagn_send_advance_bt_config(priv);
1146 } else {
1147 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
1148 "ignoring RSSI callback\n");
1149 }
1150
b1eea297 1151 mutex_unlock(&priv->mutex);
7335613a
WYG		 1152 IWL_DEBUG_MAC80211(priv, "leave\n");
1153}
1154
aca86268
JB		 1155static int iwlagn_mac_set_tim(struct ieee80211_hw *hw,
1156 struct ieee80211_sta *sta, bool set)
7335613a 1157{
d0f76d68 1158 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
7335613a 1159
1ee158d8 1160 queue_work(priv->workqueue, &priv->beacon_update);
7335613a
WYG		 1161
1162 return 0;
1163}
1164
aca86268
JB		 1165static int iwlagn_mac_conf_tx(struct ieee80211_hw *hw,
1166 struct ieee80211_vif *vif, u16 queue,
1167 const struct ieee80211_tx_queue_params *params)
0b7a4c78 1168{
d0f76d68 1169 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
0b7a4c78
WYG		 1170 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1171 struct iwl_rxon_context *ctx = vif_priv->ctx;
0b7a4c78
WYG		 1172 int q;
1173
1174 if (WARN_ON(!ctx))
1175 return -EINVAL;
1176
1177 IWL_DEBUG_MAC80211(priv, "enter\n");
1178
83626404 1179 if (!iwl_is_ready_rf(priv)) {
0b7a4c78
WYG		 1180 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
1181 return -EIO;
1182 }
1183
1184 if (queue >= AC_NUM) {
1185 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
1186 return 0;
1187 }
1188
1189 q = AC_NUM - 1 - queue;
1190
b1eea297 1191 mutex_lock(&priv->mutex);
0b7a4c78
WYG		 1192
1193 ctx->qos_data.def_qos_parm.ac[q].cw_min =
1194 cpu_to_le16(params->cw_min);
1195 ctx->qos_data.def_qos_parm.ac[q].cw_max =
1196 cpu_to_le16(params->cw_max);
1197 ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
1198 ctx->qos_data.def_qos_parm.ac[q].edca_txop =
1199 cpu_to_le16((params->txop * 32));
1200
1201 ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0;
1202
b1eea297 1203 mutex_unlock(&priv->mutex);
0b7a4c78
WYG		 1204
1205 IWL_DEBUG_MAC80211(priv, "leave\n");
1206 return 0;
1207}
1208
aca86268 1209static int iwlagn_mac_tx_last_beacon(struct ieee80211_hw *hw)
0b7a4c78 1210{
d0f76d68 1211 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
0b7a4c78
WYG		 1212
1213 return priv->ibss_manager == IWL_IBSS_MANAGER;
1214}
1215
1216static int iwl_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
1217{
1218 iwl_connection_init_rx_config(priv, ctx);
1219
1220 iwlagn_set_rxon_chain(priv, ctx);
1221
1222 return iwlagn_commit_rxon(priv, ctx);
1223}
1224
aca86268
JB		 1225static int iwl_setup_interface(struct iwl_priv *priv,
1226 struct iwl_rxon_context *ctx)
0b7a4c78
WYG		 1227{
1228 struct ieee80211_vif *vif = ctx->vif;
1479177b 1229 int err, ac;
0b7a4c78 1230
b1eea297 1231 lockdep_assert_held(&priv->mutex);
0b7a4c78
WYG		 1232
1233 /*
1234 * This variable will be correct only when there's just
1235 * a single context, but all code using it is for hardware
1236 * that supports only one context.
1237 */
1238 priv->iw_mode = vif->type;
1239
1240 ctx->is_active = true;
1241
1242 err = iwl_set_mode(priv, ctx);
1243 if (err) {
1244 if (!ctx->always_active)
1245 ctx->is_active = false;
1246 return err;
1247 }
1248
0d8877a1 1249 if (priv->lib->bt_params && priv->lib->bt_params->advanced_bt_coexist &&
0b7a4c78
WYG		 1250 vif->type == NL80211_IFTYPE_ADHOC) {
1251 /*
1252 * pretend to have high BT traffic as long as we
1253 * are operating in IBSS mode, as this will cause
1254 * the rate scaling etc. to behave as intended.
1255 */
1256 priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
1257 }
1258
1479177b
JB		 1259 /* set up queue mappings */
1260 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
1261 vif->hw_queue[ac] = ctx->ac_to_queue[ac];
1262
1263 if (vif->type == NL80211_IFTYPE_AP)
1264 vif->cab_queue = ctx->mcast_queue;
1265 else
1266 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
1267
0b7a4c78
WYG		 1268 return 0;
1269}
1270
1271static int iwlagn_mac_add_interface(struct ieee80211_hw *hw,
1479177b 1272 struct ieee80211_vif *vif)
0b7a4c78 1273{
d0f76d68 1274 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
0b7a4c78
WYG		 1275 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1276 struct iwl_rxon_context *tmp, *ctx = NULL;
1277 int err;
1278 enum nl80211_iftype viftype = ieee80211_vif_type_p2p(vif);
8db4c7e2 1279 bool reset = false;
0b7a4c78
WYG		 1280
1281 IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n",
1282 viftype, vif->addr);
1283
b1eea297 1284 mutex_lock(&priv->mutex);
0b7a4c78 1285
83626404 1286 if (!iwl_is_ready_rf(priv)) {
0b7a4c78
WYG		 1287 IWL_WARN(priv, "Try to add interface when device not ready\n");
1288 err = -EINVAL;
1289 goto out;
1290 }
1291
1292 for_each_context(priv, tmp) {
1293 u32 possible_modes =
1294 tmp->interface_modes | tmp->exclusive_interface_modes;
1295
1296 if (tmp->vif) {
8db4c7e2
SG		 1297 /* On reset we need to add the same interface again */
1298 if (tmp->vif == vif) {
1299 reset = true;
1300 ctx = tmp;
1301 break;
1302 }
1303
0b7a4c78
WYG		 1304 /* check if this busy context is exclusive */
1305 if (tmp->exclusive_interface_modes &
1306 BIT(tmp->vif->type)) {
1307 err = -EINVAL;
1308 goto out;
1309 }
1310 continue;
1311 }
1312
1313 if (!(possible_modes & BIT(viftype)))
1314 continue;
1315
1316 /* have maybe usable context w/o interface */
1317 ctx = tmp;
1318 break;
1319 }
1320
1321 if (!ctx) {
1322 err = -EOPNOTSUPP;
1323 goto out;
1324 }
1325
1326 vif_priv->ctx = ctx;
1327 ctx->vif = vif;
1328
04baaa27
JB		 1329 /*
1330 * In SNIFFER device type, the firmware reports the FCS to
1331 * the host, rather than snipping it off. Unfortunately,
1332 * mac80211 doesn't (yet) provide a per-packet flag for
1333 * this, so that we have to set the hardware flag based
1334 * on the interfaces added. As the monitor interface can
1335 * only be present by itself, and will be removed before
1336 * other interfaces are added, this is safe.
1337 */
1338 if (vif->type == NL80211_IFTYPE_MONITOR)
1339 priv->hw->flags |= IEEE80211_HW_RX_INCLUDES_FCS;
1340 else
1341 priv->hw->flags &= ~IEEE80211_HW_RX_INCLUDES_FCS;
1342
0b7a4c78 1343 err = iwl_setup_interface(priv, ctx);
8db4c7e2 1344 if (!err || reset)
0b7a4c78
WYG		 1345 goto out;
1346
1347 ctx->vif = NULL;
1348 priv->iw_mode = NL80211_IFTYPE_STATION;
1349 out:
b1eea297 1350 mutex_unlock(&priv->mutex);
0b7a4c78
WYG		 1351
1352 IWL_DEBUG_MAC80211(priv, "leave\n");
1353 return err;
1354}
1355
aca86268
JB		 1356static void iwl_teardown_interface(struct iwl_priv *priv,
1357 struct ieee80211_vif *vif,
1358 bool mode_change)
0b7a4c78
WYG		 1359{
1360 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1361
b1eea297 1362 lockdep_assert_held(&priv->mutex);
0b7a4c78
WYG		 1363
1364 if (priv->scan_vif == vif) {
1365 iwl_scan_cancel_timeout(priv, 200);
1366 iwl_force_scan_end(priv);
1367 }
1368
1369 if (!mode_change) {
1370 iwl_set_mode(priv, ctx);
1371 if (!ctx->always_active)
1372 ctx->is_active = false;
1373 }
1374
1375 /*
1376 * When removing the IBSS interface, overwrite the
1377 * BT traffic load with the stored one from the last
1378 * notification, if any. If this is a device that
1379 * doesn't implement this, this has no effect since
1380 * both values are the same and zero.
1381 */
1382 if (vif->type == NL80211_IFTYPE_ADHOC)
1383 priv->bt_traffic_load = priv->last_bt_traffic_load;
1384}
1385
1386static void iwlagn_mac_remove_interface(struct ieee80211_hw *hw,
1387 struct ieee80211_vif *vif)
1388{
d0f76d68 1389 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
0b7a4c78
WYG		 1390 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1391
1392 IWL_DEBUG_MAC80211(priv, "enter\n");
1393
b1eea297 1394 mutex_lock(&priv->mutex);
0b7a4c78
WYG		 1395
1396 if (WARN_ON(ctx->vif != vif)) {
1397 struct iwl_rxon_context *tmp;
1398 IWL_ERR(priv, "ctx->vif = %p, vif = %p\n", ctx->vif, vif);
1399 for_each_context(priv, tmp)
1400 IWL_ERR(priv, "\tID = %d:\tctx = %p\tctx->vif = %p\n",
1401 tmp->ctxid, tmp, tmp->vif);
1402 }
1403 ctx->vif = NULL;
1404
1405 iwl_teardown_interface(priv, vif, false);
1406
b1eea297 1407 mutex_unlock(&priv->mutex);
0b7a4c78
WYG		 1408
1409 IWL_DEBUG_MAC80211(priv, "leave\n");
1410
1411}
1412
1413static int iwlagn_mac_change_interface(struct ieee80211_hw *hw,
e75dac92
JB		 1414 struct ieee80211_vif *vif,
1415 enum nl80211_iftype newtype, bool newp2p)
0b7a4c78 1416{
d0f76d68 1417 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
e75dac92 1418 struct iwl_rxon_context *ctx, *tmp;
0b7a4c78
WYG		 1419 enum nl80211_iftype newviftype = newtype;
1420 u32 interface_modes;
1421 int err;
1422
1423 IWL_DEBUG_MAC80211(priv, "enter\n");
1424
1425 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1426
b1eea297 1427 mutex_lock(&priv->mutex);
0b7a4c78 1428
e75dac92
JB		 1429 ctx = iwl_rxon_ctx_from_vif(vif);
1430
1431 /*
1432 * To simplify this code, only support changes on the
1433 * BSS context. The PAN context is usually reassigned
1434 * by creating/removing P2P interfaces anyway.
1435 */
1436 if (ctx->ctxid != IWL_RXON_CTX_BSS) {
1437 err = -EBUSY;
1438 goto out;
1439 }
1440
83626404 1441 if (!ctx->vif || !iwl_is_ready_rf(priv)) {
0b7a4c78
WYG		 1442 /*
1443 * Huh? But wait ... this can maybe happen when
1444 * we're in the middle of a firmware restart!
1445 */
1446 err = -EBUSY;
1447 goto out;
1448 }
1449
e75dac92 1450 /* Check if the switch is supported in the same context */
0b7a4c78 1451 interface_modes = ctx->interface_modes | ctx->exclusive_interface_modes;
0b7a4c78
WYG		 1452 if (!(interface_modes & BIT(newtype))) {
1453 err = -EBUSY;
1454 goto out;
1455 }
1456
0b7a4c78
WYG		 1457 if (ctx->exclusive_interface_modes & BIT(newtype)) {
1458 for_each_context(priv, tmp) {
1459 if (ctx == tmp)
1460 continue;
1461
e75dac92 1462 if (!tmp->is_active)
0b7a4c78
WYG		 1463 continue;
1464
1465 /*
1466 * The current mode switch would be exclusive, but
1467 * another context is active ... refuse the switch.
1468 */
1469 err = -EBUSY;
1470 goto out;
1471 }
1472 }
1473
1474 /* success */
1475 iwl_teardown_interface(priv, vif, true);
1476 vif->type = newviftype;
1477 vif->p2p = newp2p;
1478 err = iwl_setup_interface(priv, ctx);
1479 WARN_ON(err);
1480 /*
1481 * We've switched internally, but submitting to the
1482 * device may have failed for some reason. Mask this
1483 * error, because otherwise mac80211 will not switch
1484 * (and set the interface type back) and we'll be
1485 * out of sync with it.
1486 */
1487 err = 0;
1488
1489 out:
b1eea297 1490 mutex_unlock(&priv->mutex);
0b7a4c78
WYG		 1491 IWL_DEBUG_MAC80211(priv, "leave\n");
1492
1493 return err;
1494}
1495
aca86268
JB		 1496static int iwlagn_mac_hw_scan(struct ieee80211_hw *hw,
1497 struct ieee80211_vif *vif,
1498 struct cfg80211_scan_request *req)
ba4c5319 1499{
d0f76d68 1500 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
ba4c5319
WYG		 1501 int ret;
1502
1503 IWL_DEBUG_MAC80211(priv, "enter\n");
1504
1505 if (req->n_channels == 0)
1506 return -EINVAL;
1507
b1eea297 1508 mutex_lock(&priv->mutex);
ba4c5319
WYG		 1509
1510 /*
1511 * If an internal scan is in progress, just set
1512 * up the scan_request as per above.
1513 */
1514 if (priv->scan_type != IWL_SCAN_NORMAL) {
1515 IWL_DEBUG_SCAN(priv,
1516 "SCAN request during internal scan - defer\n");
1517 priv->scan_request = req;
1518 priv->scan_vif = vif;
1519 ret = 0;
1520 } else {
1521 priv->scan_request = req;
1522 priv->scan_vif = vif;
1523 /*
1524 * mac80211 will only ask for one band at a time
1525 * so using channels[0] here is ok
1526 */
1527 ret = iwl_scan_initiate(priv, vif, IWL_SCAN_NORMAL,
1528 req->channels[0]->band);
1529 if (ret) {
1530 priv->scan_request = NULL;
1531 priv->scan_vif = NULL;
1532 }
1533 }
1534
1535 IWL_DEBUG_MAC80211(priv, "leave\n");
1536
b1eea297 1537 mutex_unlock(&priv->mutex);
ba4c5319
WYG		 1538
1539 return ret;
1540}
1541
76b29331
WYG		 1542static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1543{
9451ca1a
JB		 1544 struct iwl_addsta_cmd cmd = {
1545 .mode = STA_CONTROL_MODIFY_MSK,
1546 .station_flags_msk = STA_FLG_PWR_SAVE_MSK,
1547 .sta.sta_id = sta_id,
1548 };
76b29331 1549
9451ca1a 1550 iwl_send_add_sta(priv, &cmd, CMD_ASYNC);
76b29331
WYG		 1551}
1552
aca86268
JB		 1553static void iwlagn_mac_sta_notify(struct ieee80211_hw *hw,
1554 struct ieee80211_vif *vif,
1555 enum sta_notify_cmd cmd,
1556 struct ieee80211_sta *sta)
76b29331 1557{
d0f76d68 1558 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
76b29331
WYG		 1559 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
1560 int sta_id;
1561
1562 IWL_DEBUG_MAC80211(priv, "enter\n");
1563
1564 switch (cmd) {
1565 case STA_NOTIFY_SLEEP:
1566 WARN_ON(!sta_priv->client);
1567 sta_priv->asleep = true;
1568 if (atomic_read(&sta_priv->pending_frames) > 0)
1569 ieee80211_sta_block_awake(hw, sta, true);
1570 break;
1571 case STA_NOTIFY_AWAKE:
1572 WARN_ON(!sta_priv->client);
1573 if (!sta_priv->asleep)
1574 break;
1575 sta_priv->asleep = false;
1576 sta_id = iwl_sta_id(sta);
1577 if (sta_id != IWL_INVALID_STATION)
1578 iwl_sta_modify_ps_wake(priv, sta_id);
1579 break;
1580 default:
1581 break;
1582 }
1583 IWL_DEBUG_MAC80211(priv, "leave\n");
1584}
1585
e5209263 1586const struct ieee80211_ops iwlagn_hw_ops = {
7335613a
WYG		 1587 .tx = iwlagn_mac_tx,
1588 .start = iwlagn_mac_start,
1589 .stop = iwlagn_mac_stop,
1590#ifdef CONFIG_PM_SLEEP
1591 .suspend = iwlagn_mac_suspend,
1592 .resume = iwlagn_mac_resume,
76ed2edd 1593 .set_wakeup = iwlagn_mac_set_wakeup,
7335613a
WYG		 1594#endif
1595 .add_interface = iwlagn_mac_add_interface,
1596 .remove_interface = iwlagn_mac_remove_interface,
1597 .change_interface = iwlagn_mac_change_interface,
1598 .config = iwlagn_mac_config,
1599 .configure_filter = iwlagn_configure_filter,
1600 .set_key = iwlagn_mac_set_key,
1601 .update_tkip_key = iwlagn_mac_update_tkip_key,
1602 .set_rekey_data = iwlagn_mac_set_rekey_data,
1603 .conf_tx = iwlagn_mac_conf_tx,
1604 .bss_info_changed = iwlagn_bss_info_changed,
1605 .ampdu_action = iwlagn_mac_ampdu_action,
1606 .hw_scan = iwlagn_mac_hw_scan,
1607 .sta_notify = iwlagn_mac_sta_notify,
fb5fe5b9 1608 .sta_state = iwlagn_mac_sta_state,
7335613a
WYG		 1609 .channel_switch = iwlagn_mac_channel_switch,
1610 .flush = iwlagn_mac_flush,
1611 .tx_last_beacon = iwlagn_mac_tx_last_beacon,
7335613a 1612 .rssi_callback = iwlagn_mac_rssi_callback,
7335613a
WYG		 1613 .set_tim = iwlagn_mac_set_tim,
1614};
1615
1616/* This function both allocates and initializes hw and priv. */
1617struct ieee80211_hw *iwl_alloc_all(void)
1618{
1619 struct iwl_priv *priv;
d0f76d68 1620 struct iwl_op_mode *op_mode;
7335613a
WYG		 1621 /* mac80211 allocates memory for this device instance, including
1622 * space for this driver's private structure */
1623 struct ieee80211_hw *hw;
1624
d0f76d68
EG		 1625 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv) +
1626 sizeof(struct iwl_op_mode), &iwlagn_hw_ops);
7335613a
WYG		 1627 if (!hw)
1628 goto out;
1629
d0f76d68
EG		 1630 op_mode = hw->priv;
1631 priv = IWL_OP_MODE_GET_DVM(op_mode);
7335613a
WYG		 1632 priv->hw = hw;
1633
1634out:
1635 return hw;
1636}
Linux kernel - Deliverables
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