blob: 3f82ff4f3afe9bc9592d48d590fb3f9196fb1b21 [file] [log] [blame]
Wey-Yi Guy73356132011-11-10 06:55:11 -08001/******************************************************************************
2 *
Wey-Yi Guy4e318262011-12-27 11:21:32 -08003 * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
Wey-Yi Guy73356132011-11-10 06:55:11 -08004 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29#include <linux/kernel.h>
30#include <linux/module.h>
31#include <linux/init.h>
32#include <linux/slab.h>
33#include <linux/dma-mapping.h>
34#include <linux/delay.h>
35#include <linux/sched.h>
36#include <linux/skbuff.h>
37#include <linux/netdevice.h>
Wey-Yi Guy73356132011-11-10 06:55:11 -080038#include <linux/etherdevice.h>
39#include <linux/if_arp.h>
40
41#include <net/mac80211.h>
42
43#include <asm/div64.h>
44
45#include "iwl-eeprom.h"
46#include "iwl-dev.h"
47#include "iwl-core.h"
48#include "iwl-io.h"
49#include "iwl-agn-calib.h"
50#include "iwl-agn.h"
51#include "iwl-shared.h"
Wey-Yi Guy73356132011-11-10 06:55:11 -080052#include "iwl-trans.h"
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +020053#include "iwl-op-mode.h"
Wey-Yi Guy73356132011-11-10 06:55:11 -080054
55/*****************************************************************************
56 *
57 * mac80211 entry point functions
58 *
59 *****************************************************************************/
60
61static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
62 {
63 .max = 1,
64 .types = BIT(NL80211_IFTYPE_STATION),
65 },
66 {
67 .max = 1,
68 .types = BIT(NL80211_IFTYPE_AP),
69 },
70};
71
72static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
73 {
74 .max = 2,
75 .types = BIT(NL80211_IFTYPE_STATION),
76 },
77};
78
79static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
80 {
81 .max = 1,
82 .types = BIT(NL80211_IFTYPE_STATION),
83 },
84 {
85 .max = 1,
86 .types = BIT(NL80211_IFTYPE_P2P_GO) |
87 BIT(NL80211_IFTYPE_AP),
88 },
89};
90
91static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
92 {
93 .max = 2,
94 .types = BIT(NL80211_IFTYPE_STATION),
95 },
96 {
97 .max = 1,
98 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
99 },
100};
101
102static const struct ieee80211_iface_combination
103iwlagn_iface_combinations_dualmode[] = {
104 { .num_different_channels = 1,
105 .max_interfaces = 2,
106 .beacon_int_infra_match = true,
107 .limits = iwlagn_sta_ap_limits,
108 .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
109 },
110 { .num_different_channels = 1,
111 .max_interfaces = 2,
112 .limits = iwlagn_2sta_limits,
113 .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
114 },
115};
116
117static const struct ieee80211_iface_combination
118iwlagn_iface_combinations_p2p[] = {
119 { .num_different_channels = 1,
120 .max_interfaces = 2,
121 .beacon_int_infra_match = true,
122 .limits = iwlagn_p2p_sta_go_limits,
123 .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
124 },
125 { .num_different_channels = 1,
126 .max_interfaces = 2,
127 .limits = iwlagn_p2p_2sta_limits,
128 .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
129 },
130};
131
132/*
133 * Not a mac80211 entry point function, but it fits in with all the
134 * other mac80211 functions grouped here.
135 */
136int iwlagn_mac_setup_register(struct iwl_priv *priv,
Johannes Berg0692fe42012-03-06 13:30:37 -0800137 const struct iwl_ucode_capabilities *capa)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800138{
139 int ret;
140 struct ieee80211_hw *hw = priv->hw;
141 struct iwl_rxon_context *ctx;
142
143 hw->rate_control_algorithm = "iwl-agn-rs";
144
145 /* Tell mac80211 our characteristics */
146 hw->flags = IEEE80211_HW_SIGNAL_DBM |
147 IEEE80211_HW_AMPDU_AGGREGATION |
148 IEEE80211_HW_NEED_DTIM_PERIOD |
149 IEEE80211_HW_SPECTRUM_MGMT |
150 IEEE80211_HW_REPORTS_TX_ACK_STATUS;
151
152 /*
153 * Including the following line will crash some AP's. This
154 * workaround removes the stimulus which causes the crash until
155 * the AP software can be fixed.
156 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
157 */
158
159 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
Johannes Berge5610382012-03-15 13:26:51 -0700160 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
161 IEEE80211_HW_SCAN_WHILE_IDLE;
Wey-Yi Guy73356132011-11-10 06:55:11 -0800162
Johannes Berg9e295112012-04-09 17:46:55 -0700163 if (priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800164 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
165 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
166
David Spinadel18c57d32012-03-07 09:52:31 -0800167#ifndef CONFIG_IWLWIFI_EXPERIMENTAL_MFP
168 /* enable 11w if the uCode advertise */
Wey-Yi Guy73356132011-11-10 06:55:11 -0800169 if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
David Spinadel18c57d32012-03-07 09:52:31 -0800170#endif /* !CONFIG_IWLWIFI_EXPERIMENTAL_MFP */
Wey-Yi Guy73356132011-11-10 06:55:11 -0800171 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
172
173 hw->sta_data_size = sizeof(struct iwl_station_priv);
174 hw->vif_data_size = sizeof(struct iwl_vif_priv);
175
176 for_each_context(priv, ctx) {
177 hw->wiphy->interface_modes |= ctx->interface_modes;
178 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
179 }
180
181 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
182
183 if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
184 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
185 hw->wiphy->n_iface_combinations =
186 ARRAY_SIZE(iwlagn_iface_combinations_p2p);
187 } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
188 hw->wiphy->iface_combinations =
189 iwlagn_iface_combinations_dualmode;
190 hw->wiphy->n_iface_combinations =
191 ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
192 }
193
194 hw->wiphy->max_remain_on_channel_duration = 1000;
195
196 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
197 WIPHY_FLAG_DISABLE_BEACON_HINTS |
198 WIPHY_FLAG_IBSS_RSN;
199
David Spinadel6dfa8d02012-03-10 13:00:14 -0800200 if (priv->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
Johannes Berg2dd4f9f2012-03-05 11:24:35 -0800201 trans(priv)->ops->wowlan_suspend &&
Emmanuel Grumbach1042db22012-01-03 16:56:15 +0200202 device_can_wakeup(trans(priv)->dev)) {
Wey-Yi Guy73356132011-11-10 06:55:11 -0800203 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
204 WIPHY_WOWLAN_DISCONNECT |
205 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
206 WIPHY_WOWLAN_RFKILL_RELEASE;
207 if (!iwlagn_mod_params.sw_crypto)
208 hw->wiphy->wowlan.flags |=
209 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
210 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
211
212 hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
213 hw->wiphy->wowlan.pattern_min_len =
214 IWLAGN_WOWLAN_MIN_PATTERN_LEN;
215 hw->wiphy->wowlan.pattern_max_len =
216 IWLAGN_WOWLAN_MAX_PATTERN_LEN;
217 }
218
219 if (iwlagn_mod_params.power_save)
220 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
221 else
222 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
223
224 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
225 /* we create the 802.11 header and a zero-length SSID element */
226 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
227
228 /* Default value; 4 EDCA QOS priorities */
229 hw->queues = 4;
230
231 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
232
233 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
234 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
235 &priv->bands[IEEE80211_BAND_2GHZ];
236 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
237 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
238 &priv->bands[IEEE80211_BAND_5GHZ];
239
Emmanuel Grumbach99673ee2012-01-08 21:19:45 +0200240 hw->wiphy->hw_version = trans(priv)->hw_id;
Wey-Yi Guy0ba958e2011-12-10 11:33:52 -0800241
Wey-Yi Guy73356132011-11-10 06:55:11 -0800242 iwl_leds_init(priv);
243
244 ret = ieee80211_register_hw(priv->hw);
245 if (ret) {
246 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
247 return ret;
248 }
249 priv->mac80211_registered = 1;
250
251 return 0;
252}
253
Don Fry09af1402011-12-09 10:07:38 -0800254void iwlagn_mac_unregister(struct iwl_priv *priv)
255{
256 if (!priv->mac80211_registered)
257 return;
258 iwl_leds_exit(priv);
259 ieee80211_unregister_hw(priv->hw);
260 priv->mac80211_registered = 0;
261}
262
Wey-Yi Guy73356132011-11-10 06:55:11 -0800263static int __iwl_up(struct iwl_priv *priv)
264{
265 struct iwl_rxon_context *ctx;
266 int ret;
267
Johannes Bergb1eea292012-03-06 13:30:42 -0800268 lockdep_assert_held(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800269
Don Fry83626402012-03-07 09:52:37 -0800270 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
Wey-Yi Guy73356132011-11-10 06:55:11 -0800271 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
272 return -EIO;
273 }
274
275 for_each_context(priv, ctx) {
276 ret = iwlagn_alloc_bcast_station(priv, ctx);
277 if (ret) {
278 iwl_dealloc_bcast_stations(priv);
279 return ret;
280 }
281 }
282
Johannes Berge1991882012-03-06 13:30:36 -0800283 ret = iwl_run_init_ucode(priv);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800284 if (ret) {
285 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
286 goto error;
287 }
288
Johannes Berge1991882012-03-06 13:30:36 -0800289 ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_REGULAR);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800290 if (ret) {
291 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
292 goto error;
293 }
294
295 ret = iwl_alive_start(priv);
296 if (ret)
297 goto error;
298 return 0;
299
300 error:
Don Fry83626402012-03-07 09:52:37 -0800301 set_bit(STATUS_EXIT_PENDING, &priv->status);
Emmanuel Grumbach78e5a462012-02-17 10:34:53 -0800302 iwl_down(priv);
Don Fry83626402012-03-07 09:52:37 -0800303 clear_bit(STATUS_EXIT_PENDING, &priv->status);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800304
305 IWL_ERR(priv, "Unable to initialize device.\n");
306 return ret;
307}
308
309static int iwlagn_mac_start(struct ieee80211_hw *hw)
310{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200311 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800312 int ret;
313
314 IWL_DEBUG_MAC80211(priv, "enter\n");
315
316 /* we should be verifying the device is ready to be opened */
Johannes Bergb1eea292012-03-06 13:30:42 -0800317 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800318 ret = __iwl_up(priv);
Johannes Bergb1eea292012-03-06 13:30:42 -0800319 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800320 if (ret)
321 return ret;
322
323 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
324
325 /* Now we should be done, and the READY bit should be set. */
Don Fry83626402012-03-07 09:52:37 -0800326 if (WARN_ON(!test_bit(STATUS_READY, &priv->status)))
Wey-Yi Guy73356132011-11-10 06:55:11 -0800327 ret = -EIO;
328
329 iwlagn_led_enable(priv);
330
331 priv->is_open = 1;
332 IWL_DEBUG_MAC80211(priv, "leave\n");
333 return 0;
334}
335
David Spinadel50c1e9a2012-04-16 14:43:30 -0700336void iwlagn_mac_stop(struct ieee80211_hw *hw)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800337{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200338 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800339
340 IWL_DEBUG_MAC80211(priv, "enter\n");
341
342 if (!priv->is_open)
343 return;
344
345 priv->is_open = 0;
346
Johannes Bergb1eea292012-03-06 13:30:42 -0800347 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800348 iwl_down(priv);
Johannes Bergb1eea292012-03-06 13:30:42 -0800349 mutex_unlock(&priv->mutex);
Emmanuel Grumbach78e5a462012-02-17 10:34:53 -0800350
351 iwl_cancel_deferred_work(priv);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800352
Johannes Berg1ee158d2012-02-17 10:07:44 -0800353 flush_workqueue(priv->workqueue);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800354
355 /* User space software may expect getting rfkill changes
Emmanuel Grumbach1df06bd2012-01-09 16:35:08 +0200356 * even if interface is down, trans->down will leave the RF
357 * kill interrupt enabled
358 */
359 iwl_trans_stop_hw(trans(priv));
Wey-Yi Guy73356132011-11-10 06:55:11 -0800360
361 IWL_DEBUG_MAC80211(priv, "leave\n");
362}
363
David Spinadel50c1e9a2012-04-16 14:43:30 -0700364void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
365 struct ieee80211_vif *vif,
366 struct cfg80211_gtk_rekey_data *data)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800367{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200368 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800369
370 if (iwlagn_mod_params.sw_crypto)
371 return;
372
373 IWL_DEBUG_MAC80211(priv, "enter\n");
Johannes Bergb1eea292012-03-06 13:30:42 -0800374 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800375
376 if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
377 goto out;
378
379 memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
380 memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
381 priv->replay_ctr =
382 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
383 priv->have_rekey_data = true;
384
385 out:
Johannes Bergb1eea292012-03-06 13:30:42 -0800386 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800387 IWL_DEBUG_MAC80211(priv, "leave\n");
388}
389
390#ifdef CONFIG_PM_SLEEP
Wey-Yi Guy73356132011-11-10 06:55:11 -0800391
David Spinadel50c1e9a2012-04-16 14:43:30 -0700392int iwlagn_mac_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800393{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200394 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800395 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
Wey-Yi Guy023ca582011-11-10 06:55:17 -0800396 int ret;
Wey-Yi Guy73356132011-11-10 06:55:11 -0800397
398 if (WARN_ON(!wowlan))
399 return -EINVAL;
400
401 IWL_DEBUG_MAC80211(priv, "enter\n");
Johannes Bergb1eea292012-03-06 13:30:42 -0800402 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800403
404 /* Don't attempt WoWLAN when not associated, tear down instead. */
405 if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
406 !iwl_is_associated_ctx(ctx)) {
407 ret = 1;
408 goto out;
409 }
410
Johannes Bergea886a62012-03-07 09:52:15 -0800411 ret = iwlagn_suspend(priv, wowlan);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800412 if (ret)
413 goto error;
414
Emmanuel Grumbach1042db22012-01-03 16:56:15 +0200415 device_set_wakeup_enable(trans(priv)->dev, true);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800416
Johannes Berg2dd4f9f2012-03-05 11:24:35 -0800417 iwl_trans_wowlan_suspend(trans(priv));
Wey-Yi Guy73356132011-11-10 06:55:11 -0800418
419 goto out;
420
421 error:
Johannes Berg15b86bf2012-03-05 11:24:36 -0800422 priv->wowlan = false;
Wey-Yi Guy73356132011-11-10 06:55:11 -0800423 iwlagn_prepare_restart(priv);
424 ieee80211_restart_hw(priv->hw);
425 out:
Johannes Bergb1eea292012-03-06 13:30:42 -0800426 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800427 IWL_DEBUG_MAC80211(priv, "leave\n");
428
429 return ret;
430}
431
432static int iwlagn_mac_resume(struct ieee80211_hw *hw)
433{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200434 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800435 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
436 struct ieee80211_vif *vif;
437 unsigned long flags;
438 u32 base, status = 0xffffffff;
439 int ret = -EIO;
440
441 IWL_DEBUG_MAC80211(priv, "enter\n");
Johannes Bergb1eea292012-03-06 13:30:42 -0800442 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800443
Emmanuel Grumbach1042db22012-01-03 16:56:15 +0200444 iwl_write32(trans(priv), CSR_UCODE_DRV_GP1_CLR,
Wey-Yi Guy73356132011-11-10 06:55:11 -0800445 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
446
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -0700447 base = priv->device_pointers.error_event_table;
Wey-Yi Guy73356132011-11-10 06:55:11 -0800448 if (iwlagn_hw_valid_rtc_data_addr(base)) {
Emmanuel Grumbach1042db22012-01-03 16:56:15 +0200449 spin_lock_irqsave(&trans(priv)->reg_lock, flags);
450 ret = iwl_grab_nic_access_silent(trans(priv));
Stanislaw Gruszkabfe4b802012-03-07 09:52:24 -0800451 if (likely(ret == 0)) {
Emmanuel Grumbach1042db22012-01-03 16:56:15 +0200452 iwl_write32(trans(priv), HBUS_TARG_MEM_RADDR, base);
453 status = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
454 iwl_release_nic_access(trans(priv));
Wey-Yi Guy73356132011-11-10 06:55:11 -0800455 }
Emmanuel Grumbach1042db22012-01-03 16:56:15 +0200456 spin_unlock_irqrestore(&trans(priv)->reg_lock, flags);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800457
458#ifdef CONFIG_IWLWIFI_DEBUGFS
459 if (ret == 0) {
Oliver Hartkoppa855f7e2012-03-25 08:43:24 +0200460 const struct fw_img *img;
461
David Spinadel6dfa8d02012-03-10 13:00:14 -0800462 img = &(priv->fw->img[IWL_UCODE_WOWLAN]);
463 if (!priv->wowlan_sram) {
Wey-Yi Guy73356132011-11-10 06:55:11 -0800464 priv->wowlan_sram =
David Spinadel6dfa8d02012-03-10 13:00:14 -0800465 kzalloc(img->sec[IWL_UCODE_SECTION_DATA].len,
Wey-Yi Guy73356132011-11-10 06:55:11 -0800466 GFP_KERNEL);
David Spinadel6dfa8d02012-03-10 13:00:14 -0800467 }
Wey-Yi Guy73356132011-11-10 06:55:11 -0800468
469 if (priv->wowlan_sram)
470 _iwl_read_targ_mem_words(
David Spinadel6dfa8d02012-03-10 13:00:14 -0800471 trans(priv), 0x800000,
472 priv->wowlan_sram,
473 img->sec[IWL_UCODE_SECTION_DATA].len / 4);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800474 }
475#endif
476 }
477
478 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
479 vif = ctx->vif;
480
Johannes Berg15b86bf2012-03-05 11:24:36 -0800481 priv->wowlan = false;
Wey-Yi Guy73356132011-11-10 06:55:11 -0800482
Emmanuel Grumbach1042db22012-01-03 16:56:15 +0200483 device_set_wakeup_enable(trans(priv)->dev, false);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800484
485 iwlagn_prepare_restart(priv);
486
487 memset((void *)&ctx->active, 0, sizeof(ctx->active));
488 iwl_connection_init_rx_config(priv, ctx);
489 iwlagn_set_rxon_chain(priv, ctx);
490
Johannes Bergb1eea292012-03-06 13:30:42 -0800491 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800492 IWL_DEBUG_MAC80211(priv, "leave\n");
493
494 ieee80211_resume_disconnect(vif);
495
496 return 1;
497}
498
499#endif
500
David Spinadel50c1e9a2012-04-16 14:43:30 -0700501void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800502{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200503 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800504
Wey-Yi Guy73356132011-11-10 06:55:11 -0800505 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
506 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
507
508 if (iwlagn_tx_skb(priv, skb))
509 dev_kfree_skb_any(skb);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800510}
511
David Spinadel50c1e9a2012-04-16 14:43:30 -0700512void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
513 struct ieee80211_vif *vif,
514 struct ieee80211_key_conf *keyconf,
515 struct ieee80211_sta *sta,
516 u32 iv32, u16 *phase1key)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800517{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200518 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800519
520 iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
521}
522
David Spinadel50c1e9a2012-04-16 14:43:30 -0700523int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
524 struct ieee80211_vif *vif,
525 struct ieee80211_sta *sta,
526 struct ieee80211_key_conf *key)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800527{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200528 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800529 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
530 struct iwl_rxon_context *ctx = vif_priv->ctx;
531 int ret;
532 bool is_default_wep_key = false;
533
534 IWL_DEBUG_MAC80211(priv, "enter\n");
535
536 if (iwlagn_mod_params.sw_crypto) {
537 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
538 return -EOPNOTSUPP;
539 }
540
Johannes Berga7e12c82011-11-25 03:20:09 -0800541 switch (key->cipher) {
542 case WLAN_CIPHER_SUITE_TKIP:
543 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
544 /* fall through */
545 case WLAN_CIPHER_SUITE_CCMP:
546 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
547 break;
548 default:
549 break;
550 }
551
Wey-Yi Guy73356132011-11-10 06:55:11 -0800552 /*
553 * We could program these keys into the hardware as well, but we
554 * don't expect much multicast traffic in IBSS and having keys
555 * for more stations is probably more useful.
556 *
557 * Mark key TX-only and return 0.
558 */
559 if (vif->type == NL80211_IFTYPE_ADHOC &&
560 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
561 key->hw_key_idx = WEP_INVALID_OFFSET;
562 return 0;
563 }
564
565 /* If they key was TX-only, accept deletion */
566 if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
567 return 0;
568
Johannes Bergb1eea292012-03-06 13:30:42 -0800569 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800570 iwl_scan_cancel_timeout(priv, 100);
571
572 BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
573
574 /*
575 * If we are getting WEP group key and we didn't receive any key mapping
576 * so far, we are in legacy wep mode (group key only), otherwise we are
577 * in 1X mode.
578 * In legacy wep mode, we use another host command to the uCode.
579 */
580 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
581 key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
582 if (cmd == SET_KEY)
583 is_default_wep_key = !ctx->key_mapping_keys;
584 else
585 is_default_wep_key =
586 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
587 }
588
589
590 switch (cmd) {
591 case SET_KEY:
592 if (is_default_wep_key) {
593 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
594 break;
595 }
596 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
597 if (ret) {
598 /*
599 * can't add key for RX, but we don't need it
600 * in the device for TX so still return 0
601 */
602 ret = 0;
603 key->hw_key_idx = WEP_INVALID_OFFSET;
604 }
605
606 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
607 break;
608 case DISABLE_KEY:
609 if (is_default_wep_key)
610 ret = iwl_remove_default_wep_key(priv, ctx, key);
611 else
612 ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
613
614 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
615 break;
616 default:
617 ret = -EINVAL;
618 }
619
Johannes Bergb1eea292012-03-06 13:30:42 -0800620 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800621 IWL_DEBUG_MAC80211(priv, "leave\n");
622
623 return ret;
624}
625
David Spinadel50c1e9a2012-04-16 14:43:30 -0700626int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
627 struct ieee80211_vif *vif,
628 enum ieee80211_ampdu_mlme_action action,
629 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
630 u8 buf_size)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800631{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200632 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800633 int ret = -EINVAL;
634 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
Wey-Yi Guy73356132011-11-10 06:55:11 -0800635
636 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
637 sta->addr, tid);
638
Johannes Berg9e295112012-04-09 17:46:55 -0700639 if (!(priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE))
Wey-Yi Guy73356132011-11-10 06:55:11 -0800640 return -EACCES;
641
642 IWL_DEBUG_MAC80211(priv, "enter\n");
Johannes Bergb1eea292012-03-06 13:30:42 -0800643 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800644
645 switch (action) {
646 case IEEE80211_AMPDU_RX_START:
Johannes Berg74289942011-12-13 00:07:40 -0800647 if (iwlagn_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
648 break;
Wey-Yi Guy73356132011-11-10 06:55:11 -0800649 IWL_DEBUG_HT(priv, "start Rx\n");
650 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
651 break;
652 case IEEE80211_AMPDU_RX_STOP:
653 IWL_DEBUG_HT(priv, "stop Rx\n");
654 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800655 break;
656 case IEEE80211_AMPDU_TX_START:
Johannes Berg9eae88f2012-03-15 13:26:52 -0700657 if (!trans(priv)->ops->tx_agg_setup)
658 break;
Johannes Berg74289942011-12-13 00:07:40 -0800659 if (iwlagn_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
660 break;
Wey-Yi Guy73356132011-11-10 06:55:11 -0800661 IWL_DEBUG_HT(priv, "start Tx\n");
662 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
663 break;
664 case IEEE80211_AMPDU_TX_STOP:
665 IWL_DEBUG_HT(priv, "stop Tx\n");
666 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
667 if ((ret == 0) && (priv->agg_tids_count > 0)) {
668 priv->agg_tids_count--;
669 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
670 priv->agg_tids_count);
671 }
Johannes Bergb9ad70d2012-03-06 13:30:55 -0800672 if (!priv->agg_tids_count &&
Johannes Berg9e295112012-04-09 17:46:55 -0700673 priv->hw_params.use_rts_for_aggregation) {
Wey-Yi Guy73356132011-11-10 06:55:11 -0800674 /*
675 * switch off RTS/CTS if it was previously enabled
676 */
677 sta_priv->lq_sta.lq.general_params.flags &=
678 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
679 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
680 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
681 }
682 break;
683 case IEEE80211_AMPDU_TX_OPERATIONAL:
Emmanuel Grumbach822e8b22011-11-21 13:25:31 +0200684 ret = iwlagn_tx_agg_oper(priv, vif, sta, tid, buf_size);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800685 break;
686 }
Johannes Bergb1eea292012-03-06 13:30:42 -0800687 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800688 IWL_DEBUG_MAC80211(priv, "leave\n");
689 return ret;
690}
691
692static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
693 struct ieee80211_vif *vif,
694 struct ieee80211_sta *sta)
695{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200696 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800697 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
698 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
699 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
Johannes Bergfb5fe5b2012-03-05 11:24:29 -0800700 int ret;
Wey-Yi Guy73356132011-11-10 06:55:11 -0800701 u8 sta_id;
702
Wey-Yi Guy73356132011-11-10 06:55:11 -0800703 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
704 sta->addr);
705 sta_priv->sta_id = IWL_INVALID_STATION;
706
707 atomic_set(&sta_priv->pending_frames, 0);
708 if (vif->type == NL80211_IFTYPE_AP)
709 sta_priv->client = true;
710
711 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
712 is_ap, sta, &sta_id);
713 if (ret) {
714 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
715 sta->addr, ret);
716 /* Should we return success if return code is EEXIST ? */
Johannes Bergfb5fe5b2012-03-05 11:24:29 -0800717 return ret;
Wey-Yi Guy73356132011-11-10 06:55:11 -0800718 }
719
720 sta_priv->sta_id = sta_id;
721
Johannes Bergfb5fe5b2012-03-05 11:24:29 -0800722 return 0;
723}
724
725static int iwlagn_mac_sta_remove(struct ieee80211_hw *hw,
726 struct ieee80211_vif *vif,
727 struct ieee80211_sta *sta)
728{
729 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
730 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
731 int ret;
732
Johannes Berg97420512012-03-07 09:52:42 -0800733 IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n", sta->addr);
734
735 if (vif->type == NL80211_IFTYPE_STATION) {
736 /*
737 * Station will be removed from device when the RXON
738 * is set to unassociated -- just deactivate it here
739 * to avoid re-programming it.
740 */
741 ret = 0;
742 iwl_deactivate_station(priv, sta_priv->sta_id, sta->addr);
743 } else {
744 ret = iwl_remove_station(priv, sta_priv->sta_id, sta->addr);
745 if (ret)
746 IWL_DEBUG_QUIET_RFKILL(priv,
747 "Error removing station %pM\n", sta->addr);
748 }
Johannes Bergfb5fe5b2012-03-05 11:24:29 -0800749 return ret;
750}
751
David Spinadel50c1e9a2012-04-16 14:43:30 -0700752int iwlagn_mac_sta_state(struct ieee80211_hw *hw,
753 struct ieee80211_vif *vif,
754 struct ieee80211_sta *sta,
755 enum ieee80211_sta_state old_state,
756 enum ieee80211_sta_state new_state)
Johannes Bergfb5fe5b2012-03-05 11:24:29 -0800757{
758 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Johannes Bergab0bd5b2012-03-05 11:24:47 -0800759 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
Johannes Bergfb5fe5b2012-03-05 11:24:29 -0800760 enum {
Johannes Bergab0bd5b2012-03-05 11:24:47 -0800761 NONE, ADD, REMOVE, HT_RATE_INIT, ADD_RATE_INIT,
Johannes Bergfb5fe5b2012-03-05 11:24:29 -0800762 } op = NONE;
763 int ret;
764
765 IWL_DEBUG_MAC80211(priv, "station %pM state change %d->%d\n",
766 sta->addr, old_state, new_state);
767
Johannes Bergb1eea292012-03-06 13:30:42 -0800768 mutex_lock(&priv->mutex);
Johannes Bergfb5fe5b2012-03-05 11:24:29 -0800769 if (vif->type == NL80211_IFTYPE_STATION) {
770 if (old_state == IEEE80211_STA_NOTEXIST &&
771 new_state == IEEE80211_STA_NONE)
772 op = ADD;
773 else if (old_state == IEEE80211_STA_NONE &&
774 new_state == IEEE80211_STA_NOTEXIST)
775 op = REMOVE;
776 else if (old_state == IEEE80211_STA_AUTH &&
777 new_state == IEEE80211_STA_ASSOC)
Johannes Bergab0bd5b2012-03-05 11:24:47 -0800778 op = HT_RATE_INIT;
Johannes Bergfb5fe5b2012-03-05 11:24:29 -0800779 } else {
780 if (old_state == IEEE80211_STA_AUTH &&
781 new_state == IEEE80211_STA_ASSOC)
782 op = ADD_RATE_INIT;
783 else if (old_state == IEEE80211_STA_ASSOC &&
784 new_state == IEEE80211_STA_AUTH)
785 op = REMOVE;
786 }
787
788 switch (op) {
789 case ADD:
790 ret = iwlagn_mac_sta_add(hw, vif, sta);
791 break;
792 case REMOVE:
793 ret = iwlagn_mac_sta_remove(hw, vif, sta);
794 break;
795 case ADD_RATE_INIT:
796 ret = iwlagn_mac_sta_add(hw, vif, sta);
797 if (ret)
798 break;
Johannes Bergfb5fe5b2012-03-05 11:24:29 -0800799 /* Initialize rate scaling */
800 IWL_DEBUG_INFO(priv,
801 "Initializing rate scaling for station %pM\n",
802 sta->addr);
803 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
804 ret = 0;
805 break;
Johannes Bergab0bd5b2012-03-05 11:24:47 -0800806 case HT_RATE_INIT:
807 /* Initialize rate scaling */
808 ret = iwl_sta_update_ht(priv, vif_priv->ctx, sta);
809 if (ret)
810 break;
811 IWL_DEBUG_INFO(priv,
812 "Initializing rate scaling for station %pM\n",
813 sta->addr);
814 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
815 ret = 0;
816 break;
Johannes Bergfb5fe5b2012-03-05 11:24:29 -0800817 default:
818 ret = 0;
819 break;
820 }
821
822 /*
823 * mac80211 might WARN if we fail, but due the way we
824 * (badly) handle hard rfkill, we might fail here
825 */
Don Fry83626402012-03-07 09:52:37 -0800826 if (iwl_is_rfkill(priv))
Johannes Bergfb5fe5b2012-03-05 11:24:29 -0800827 ret = 0;
828
Johannes Bergb1eea292012-03-06 13:30:42 -0800829 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800830 IWL_DEBUG_MAC80211(priv, "leave\n");
831
832 return ret;
833}
834
David Spinadel50c1e9a2012-04-16 14:43:30 -0700835void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
836 struct ieee80211_channel_switch *ch_switch)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800837{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200838 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800839 const struct iwl_channel_info *ch_info;
840 struct ieee80211_conf *conf = &hw->conf;
841 struct ieee80211_channel *channel = ch_switch->channel;
842 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
843 /*
844 * MULTI-FIXME
845 * When we add support for multiple interfaces, we need to
846 * revisit this. The channel switch command in the device
847 * only affects the BSS context, but what does that really
848 * mean? And what if we get a CSA on the second interface?
849 * This needs a lot of work.
850 */
851 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
852 u16 ch;
853
854 IWL_DEBUG_MAC80211(priv, "enter\n");
855
Johannes Bergb1eea292012-03-06 13:30:42 -0800856 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800857
Don Fry83626402012-03-07 09:52:37 -0800858 if (iwl_is_rfkill(priv))
Wey-Yi Guy73356132011-11-10 06:55:11 -0800859 goto out;
860
Don Fry83626402012-03-07 09:52:37 -0800861 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
862 test_bit(STATUS_SCANNING, &priv->status) ||
863 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
Wey-Yi Guy73356132011-11-10 06:55:11 -0800864 goto out;
865
866 if (!iwl_is_associated_ctx(ctx))
867 goto out;
868
Johannes Berge9676692012-04-10 14:10:28 -0700869 if (!priv->lib->set_channel_switch)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800870 goto out;
871
872 ch = channel->hw_value;
873 if (le16_to_cpu(ctx->active.channel) == ch)
874 goto out;
875
876 ch_info = iwl_get_channel_info(priv, channel->band, ch);
877 if (!is_channel_valid(ch_info)) {
878 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
879 goto out;
880 }
881
Wey-Yi Guy73356132011-11-10 06:55:11 -0800882 priv->current_ht_config.smps = conf->smps_mode;
883
884 /* Configure HT40 channels */
885 ctx->ht.enabled = conf_is_ht(conf);
Wey-Yi Guy137ce792011-11-22 16:23:35 -0800886 if (ctx->ht.enabled)
887 iwlagn_config_ht40(conf, ctx);
888 else
Wey-Yi Guy73356132011-11-10 06:55:11 -0800889 ctx->ht.is_40mhz = false;
890
891 if ((le16_to_cpu(ctx->staging.channel) != ch))
892 ctx->staging.flags = 0;
893
894 iwl_set_rxon_channel(priv, channel, ctx);
895 iwl_set_rxon_ht(priv, ht_conf);
896 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
897
Wey-Yi Guy73356132011-11-10 06:55:11 -0800898 iwl_set_rate(priv);
899 /*
900 * at this point, staging_rxon has the
901 * configuration for channel switch
902 */
Don Fry83626402012-03-07 09:52:37 -0800903 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800904 priv->switch_channel = cpu_to_le16(ch);
Johannes Berge9676692012-04-10 14:10:28 -0700905 if (priv->lib->set_channel_switch(priv, ch_switch)) {
Don Fry83626402012-03-07 09:52:37 -0800906 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800907 priv->switch_channel = 0;
908 ieee80211_chswitch_done(ctx->vif, false);
909 }
910
911out:
Johannes Bergb1eea292012-03-06 13:30:42 -0800912 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800913 IWL_DEBUG_MAC80211(priv, "leave\n");
914}
915
Meenakshi Venkataramanbedec3a2012-03-13 17:47:23 -0700916void iwl_chswitch_done(struct iwl_priv *priv, bool is_success)
917{
918 /*
919 * MULTI-FIXME
920 * See iwlagn_mac_channel_switch.
921 */
922 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
923
924 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
925 return;
926
927 if (test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
928 ieee80211_chswitch_done(ctx->vif, is_success);
929}
930
David Spinadel50c1e9a2012-04-16 14:43:30 -0700931void iwlagn_configure_filter(struct ieee80211_hw *hw,
932 unsigned int changed_flags,
933 unsigned int *total_flags,
934 u64 multicast)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800935{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200936 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800937 __le32 filter_or = 0, filter_nand = 0;
938 struct iwl_rxon_context *ctx;
939
940#define CHK(test, flag) do { \
941 if (*total_flags & (test)) \
942 filter_or |= (flag); \
943 else \
944 filter_nand |= (flag); \
945 } while (0)
946
947 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
948 changed_flags, *total_flags);
949
950 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
951 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
952 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
953 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
954
955#undef CHK
956
Johannes Bergb1eea292012-03-06 13:30:42 -0800957 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800958
959 for_each_context(priv, ctx) {
960 ctx->staging.filter_flags &= ~filter_nand;
961 ctx->staging.filter_flags |= filter_or;
962
963 /*
964 * Not committing directly because hardware can perform a scan,
965 * but we'll eventually commit the filter flags change anyway.
966 */
967 }
968
Johannes Bergb1eea292012-03-06 13:30:42 -0800969 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800970
971 /*
972 * Receiving all multicast frames is always enabled by the
973 * default flags setup in iwl_connection_init_rx_config()
974 * since we currently do not support programming multicast
975 * filters into the device.
976 */
977 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
978 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
979}
980
David Spinadel50c1e9a2012-04-16 14:43:30 -0700981void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800982{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200983 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800984
Johannes Bergb1eea292012-03-06 13:30:42 -0800985 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800986 IWL_DEBUG_MAC80211(priv, "enter\n");
987
Don Fry83626402012-03-07 09:52:37 -0800988 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
Wey-Yi Guy73356132011-11-10 06:55:11 -0800989 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
990 goto done;
991 }
Don Fry83626402012-03-07 09:52:37 -0800992 if (iwl_is_rfkill(priv)) {
Wey-Yi Guy73356132011-11-10 06:55:11 -0800993 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
994 goto done;
995 }
996
997 /*
998 * mac80211 will not push any more frames for transmit
999 * until the flush is completed
1000 */
1001 if (drop) {
1002 IWL_DEBUG_MAC80211(priv, "send flush command\n");
1003 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
1004 IWL_ERR(priv, "flush request fail\n");
1005 goto done;
1006 }
1007 }
1008 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
1009 iwl_trans_wait_tx_queue_empty(trans(priv));
1010done:
Johannes Bergb1eea292012-03-06 13:30:42 -08001011 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001012 IWL_DEBUG_MAC80211(priv, "leave\n");
1013}
1014
1015static int iwlagn_mac_remain_on_channel(struct ieee80211_hw *hw,
1016 struct ieee80211_channel *channel,
1017 enum nl80211_channel_type channel_type,
1018 int duration)
1019{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001020 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001021 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1022 int err = 0;
1023
Johannes Berga18f61b2012-03-15 13:26:53 -07001024 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
Wey-Yi Guy73356132011-11-10 06:55:11 -08001025 return -EOPNOTSUPP;
1026
1027 if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
1028 return -EOPNOTSUPP;
1029
1030 IWL_DEBUG_MAC80211(priv, "enter\n");
Johannes Bergb1eea292012-03-06 13:30:42 -08001031 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001032
Don Fry83626402012-03-07 09:52:37 -08001033 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
Wey-Yi Guy73356132011-11-10 06:55:11 -08001034 err = -EBUSY;
1035 goto out;
1036 }
1037
1038 priv->hw_roc_channel = channel;
1039 priv->hw_roc_chantype = channel_type;
Johannes Berg3ddf6be2011-11-10 06:55:21 -08001040 /* convert from ms to TU */
1041 priv->hw_roc_duration = DIV_ROUND_UP(1000 * duration, 1024);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001042 priv->hw_roc_start_notified = false;
1043 cancel_delayed_work(&priv->hw_roc_disable_work);
1044
1045 if (!ctx->is_active) {
Johannes Berga69cd042011-11-10 06:55:13 -08001046 static const struct iwl_qos_info default_qos_data = {
1047 .def_qos_parm = {
1048 .ac[0] = {
1049 .cw_min = cpu_to_le16(3),
1050 .cw_max = cpu_to_le16(7),
1051 .aifsn = 2,
1052 .edca_txop = cpu_to_le16(1504),
1053 },
1054 .ac[1] = {
1055 .cw_min = cpu_to_le16(7),
1056 .cw_max = cpu_to_le16(15),
1057 .aifsn = 2,
1058 .edca_txop = cpu_to_le16(3008),
1059 },
1060 .ac[2] = {
1061 .cw_min = cpu_to_le16(15),
1062 .cw_max = cpu_to_le16(1023),
1063 .aifsn = 3,
1064 },
1065 .ac[3] = {
1066 .cw_min = cpu_to_le16(15),
1067 .cw_max = cpu_to_le16(1023),
1068 .aifsn = 7,
1069 },
1070 },
1071 };
1072
Wey-Yi Guy73356132011-11-10 06:55:11 -08001073 ctx->is_active = true;
Johannes Berga69cd042011-11-10 06:55:13 -08001074 ctx->qos_data = default_qos_data;
Wey-Yi Guy73356132011-11-10 06:55:11 -08001075 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1076 memcpy(ctx->staging.node_addr,
1077 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
1078 ETH_ALEN);
1079 memcpy(ctx->staging.bssid_addr,
1080 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
1081 ETH_ALEN);
1082 err = iwlagn_commit_rxon(priv, ctx);
1083 if (err)
1084 goto out;
1085 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
1086 RXON_FILTER_PROMISC_MSK |
1087 RXON_FILTER_CTL2HOST_MSK;
1088
1089 err = iwlagn_commit_rxon(priv, ctx);
1090 if (err) {
1091 iwlagn_disable_roc(priv);
1092 goto out;
1093 }
1094 priv->hw_roc_setup = true;
1095 }
1096
1097 err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
1098 if (err)
1099 iwlagn_disable_roc(priv);
1100
1101 out:
Johannes Bergb1eea292012-03-06 13:30:42 -08001102 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001103 IWL_DEBUG_MAC80211(priv, "leave\n");
1104
1105 return err;
1106}
1107
David Spinadel50c1e9a2012-04-16 14:43:30 -07001108int iwlagn_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
Wey-Yi Guy73356132011-11-10 06:55:11 -08001109{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001110 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001111
Johannes Berga18f61b2012-03-15 13:26:53 -07001112 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
Wey-Yi Guy73356132011-11-10 06:55:11 -08001113 return -EOPNOTSUPP;
1114
1115 IWL_DEBUG_MAC80211(priv, "enter\n");
Johannes Bergb1eea292012-03-06 13:30:42 -08001116 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001117 iwl_scan_cancel_timeout(priv, priv->hw_roc_duration);
1118 iwlagn_disable_roc(priv);
Johannes Bergb1eea292012-03-06 13:30:42 -08001119 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001120 IWL_DEBUG_MAC80211(priv, "leave\n");
1121
1122 return 0;
1123}
1124
David Spinadel50c1e9a2012-04-16 14:43:30 -07001125void iwlagn_mac_rssi_callback(struct ieee80211_hw *hw,
1126 enum ieee80211_rssi_event rssi_event)
Wey-Yi Guy73356132011-11-10 06:55:11 -08001127{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001128 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001129
1130 IWL_DEBUG_MAC80211(priv, "enter\n");
Johannes Bergb1eea292012-03-06 13:30:42 -08001131 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001132
Don Fry38622412011-12-16 07:07:36 -08001133 if (cfg(priv)->bt_params &&
1134 cfg(priv)->bt_params->advanced_bt_coexist) {
Wey-Yi Guy73356132011-11-10 06:55:11 -08001135 if (rssi_event == RSSI_EVENT_LOW)
1136 priv->bt_enable_pspoll = true;
1137 else if (rssi_event == RSSI_EVENT_HIGH)
1138 priv->bt_enable_pspoll = false;
1139
1140 iwlagn_send_advance_bt_config(priv);
1141 } else {
1142 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
1143 "ignoring RSSI callback\n");
1144 }
1145
Johannes Bergb1eea292012-03-06 13:30:42 -08001146 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001147 IWL_DEBUG_MAC80211(priv, "leave\n");
1148}
1149
David Spinadel50c1e9a2012-04-16 14:43:30 -07001150int iwlagn_mac_set_tim(struct ieee80211_hw *hw,
1151 struct ieee80211_sta *sta, bool set)
Wey-Yi Guy73356132011-11-10 06:55:11 -08001152{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001153 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001154
Johannes Berg1ee158d2012-02-17 10:07:44 -08001155 queue_work(priv->workqueue, &priv->beacon_update);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001156
1157 return 0;
1158}
1159
David Spinadel50c1e9a2012-04-16 14:43:30 -07001160int iwlagn_mac_conf_tx(struct ieee80211_hw *hw,
1161 struct ieee80211_vif *vif, u16 queue,
1162 const struct ieee80211_tx_queue_params *params)
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001163{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001164 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001165 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1166 struct iwl_rxon_context *ctx = vif_priv->ctx;
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001167 int q;
1168
1169 if (WARN_ON(!ctx))
1170 return -EINVAL;
1171
1172 IWL_DEBUG_MAC80211(priv, "enter\n");
1173
Don Fry83626402012-03-07 09:52:37 -08001174 if (!iwl_is_ready_rf(priv)) {
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001175 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
1176 return -EIO;
1177 }
1178
1179 if (queue >= AC_NUM) {
1180 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
1181 return 0;
1182 }
1183
1184 q = AC_NUM - 1 - queue;
1185
Johannes Bergb1eea292012-03-06 13:30:42 -08001186 mutex_lock(&priv->mutex);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001187
1188 ctx->qos_data.def_qos_parm.ac[q].cw_min =
1189 cpu_to_le16(params->cw_min);
1190 ctx->qos_data.def_qos_parm.ac[q].cw_max =
1191 cpu_to_le16(params->cw_max);
1192 ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
1193 ctx->qos_data.def_qos_parm.ac[q].edca_txop =
1194 cpu_to_le16((params->txop * 32));
1195
1196 ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0;
1197
Johannes Bergb1eea292012-03-06 13:30:42 -08001198 mutex_unlock(&priv->mutex);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001199
1200 IWL_DEBUG_MAC80211(priv, "leave\n");
1201 return 0;
1202}
1203
David Spinadel50c1e9a2012-04-16 14:43:30 -07001204int iwlagn_mac_tx_last_beacon(struct ieee80211_hw *hw)
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001205{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001206 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001207
1208 return priv->ibss_manager == IWL_IBSS_MANAGER;
1209}
1210
1211static int iwl_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
1212{
1213 iwl_connection_init_rx_config(priv, ctx);
1214
1215 iwlagn_set_rxon_chain(priv, ctx);
1216
1217 return iwlagn_commit_rxon(priv, ctx);
1218}
1219
David Spinadel50c1e9a2012-04-16 14:43:30 -07001220int iwl_setup_interface(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001221{
1222 struct ieee80211_vif *vif = ctx->vif;
1223 int err;
1224
Johannes Bergb1eea292012-03-06 13:30:42 -08001225 lockdep_assert_held(&priv->mutex);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001226
1227 /*
1228 * This variable will be correct only when there's just
1229 * a single context, but all code using it is for hardware
1230 * that supports only one context.
1231 */
1232 priv->iw_mode = vif->type;
1233
1234 ctx->is_active = true;
1235
1236 err = iwl_set_mode(priv, ctx);
1237 if (err) {
1238 if (!ctx->always_active)
1239 ctx->is_active = false;
1240 return err;
1241 }
1242
Don Fry38622412011-12-16 07:07:36 -08001243 if (cfg(priv)->bt_params && cfg(priv)->bt_params->advanced_bt_coexist &&
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001244 vif->type == NL80211_IFTYPE_ADHOC) {
1245 /*
1246 * pretend to have high BT traffic as long as we
1247 * are operating in IBSS mode, as this will cause
1248 * the rate scaling etc. to behave as intended.
1249 */
1250 priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
1251 }
1252
1253 return 0;
1254}
1255
1256static int iwlagn_mac_add_interface(struct ieee80211_hw *hw,
1257 struct ieee80211_vif *vif)
1258{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001259 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001260 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1261 struct iwl_rxon_context *tmp, *ctx = NULL;
1262 int err;
1263 enum nl80211_iftype viftype = ieee80211_vif_type_p2p(vif);
1264
1265 IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n",
1266 viftype, vif->addr);
1267
1268 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1269
Johannes Bergb1eea292012-03-06 13:30:42 -08001270 mutex_lock(&priv->mutex);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001271
1272 iwlagn_disable_roc(priv);
1273
Don Fry83626402012-03-07 09:52:37 -08001274 if (!iwl_is_ready_rf(priv)) {
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001275 IWL_WARN(priv, "Try to add interface when device not ready\n");
1276 err = -EINVAL;
1277 goto out;
1278 }
1279
1280 for_each_context(priv, tmp) {
1281 u32 possible_modes =
1282 tmp->interface_modes | tmp->exclusive_interface_modes;
1283
1284 if (tmp->vif) {
1285 /* check if this busy context is exclusive */
1286 if (tmp->exclusive_interface_modes &
1287 BIT(tmp->vif->type)) {
1288 err = -EINVAL;
1289 goto out;
1290 }
1291 continue;
1292 }
1293
1294 if (!(possible_modes & BIT(viftype)))
1295 continue;
1296
1297 /* have maybe usable context w/o interface */
1298 ctx = tmp;
1299 break;
1300 }
1301
1302 if (!ctx) {
1303 err = -EOPNOTSUPP;
1304 goto out;
1305 }
1306
1307 vif_priv->ctx = ctx;
1308 ctx->vif = vif;
1309
1310 err = iwl_setup_interface(priv, ctx);
1311 if (!err)
1312 goto out;
1313
1314 ctx->vif = NULL;
1315 priv->iw_mode = NL80211_IFTYPE_STATION;
1316 out:
Johannes Bergb1eea292012-03-06 13:30:42 -08001317 mutex_unlock(&priv->mutex);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001318
1319 IWL_DEBUG_MAC80211(priv, "leave\n");
1320 return err;
1321}
1322
David Spinadel50c1e9a2012-04-16 14:43:30 -07001323void iwl_teardown_interface(struct iwl_priv *priv,
1324 struct ieee80211_vif *vif,
1325 bool mode_change)
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001326{
1327 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1328
Johannes Bergb1eea292012-03-06 13:30:42 -08001329 lockdep_assert_held(&priv->mutex);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001330
1331 if (priv->scan_vif == vif) {
1332 iwl_scan_cancel_timeout(priv, 200);
1333 iwl_force_scan_end(priv);
1334 }
1335
1336 if (!mode_change) {
1337 iwl_set_mode(priv, ctx);
1338 if (!ctx->always_active)
1339 ctx->is_active = false;
1340 }
1341
1342 /*
1343 * When removing the IBSS interface, overwrite the
1344 * BT traffic load with the stored one from the last
1345 * notification, if any. If this is a device that
1346 * doesn't implement this, this has no effect since
1347 * both values are the same and zero.
1348 */
1349 if (vif->type == NL80211_IFTYPE_ADHOC)
1350 priv->bt_traffic_load = priv->last_bt_traffic_load;
1351}
1352
1353static void iwlagn_mac_remove_interface(struct ieee80211_hw *hw,
1354 struct ieee80211_vif *vif)
1355{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001356 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001357 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1358
1359 IWL_DEBUG_MAC80211(priv, "enter\n");
1360
Johannes Bergb1eea292012-03-06 13:30:42 -08001361 mutex_lock(&priv->mutex);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001362
1363 if (WARN_ON(ctx->vif != vif)) {
1364 struct iwl_rxon_context *tmp;
1365 IWL_ERR(priv, "ctx->vif = %p, vif = %p\n", ctx->vif, vif);
1366 for_each_context(priv, tmp)
1367 IWL_ERR(priv, "\tID = %d:\tctx = %p\tctx->vif = %p\n",
1368 tmp->ctxid, tmp, tmp->vif);
1369 }
1370 ctx->vif = NULL;
1371
1372 iwl_teardown_interface(priv, vif, false);
1373
Johannes Bergb1eea292012-03-06 13:30:42 -08001374 mutex_unlock(&priv->mutex);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001375
1376 IWL_DEBUG_MAC80211(priv, "leave\n");
1377
1378}
1379
1380static int iwlagn_mac_change_interface(struct ieee80211_hw *hw,
1381 struct ieee80211_vif *vif,
1382 enum nl80211_iftype newtype, bool newp2p)
1383{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001384 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001385 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1386 struct iwl_rxon_context *bss_ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1387 struct iwl_rxon_context *tmp;
1388 enum nl80211_iftype newviftype = newtype;
1389 u32 interface_modes;
1390 int err;
1391
1392 IWL_DEBUG_MAC80211(priv, "enter\n");
1393
1394 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1395
Johannes Bergb1eea292012-03-06 13:30:42 -08001396 mutex_lock(&priv->mutex);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001397
Don Fry83626402012-03-07 09:52:37 -08001398 if (!ctx->vif || !iwl_is_ready_rf(priv)) {
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001399 /*
1400 * Huh? But wait ... this can maybe happen when
1401 * we're in the middle of a firmware restart!
1402 */
1403 err = -EBUSY;
1404 goto out;
1405 }
1406
1407 interface_modes = ctx->interface_modes | ctx->exclusive_interface_modes;
1408
1409 if (!(interface_modes & BIT(newtype))) {
1410 err = -EBUSY;
1411 goto out;
1412 }
1413
1414 /*
1415 * Refuse a change that should be done by moving from the PAN
1416 * context to the BSS context instead, if the BSS context is
1417 * available and can support the new interface type.
1418 */
1419 if (ctx->ctxid == IWL_RXON_CTX_PAN && !bss_ctx->vif &&
1420 (bss_ctx->interface_modes & BIT(newtype) ||
1421 bss_ctx->exclusive_interface_modes & BIT(newtype))) {
1422 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
1423 err = -EBUSY;
1424 goto out;
1425 }
1426
1427 if (ctx->exclusive_interface_modes & BIT(newtype)) {
1428 for_each_context(priv, tmp) {
1429 if (ctx == tmp)
1430 continue;
1431
1432 if (!tmp->vif)
1433 continue;
1434
1435 /*
1436 * The current mode switch would be exclusive, but
1437 * another context is active ... refuse the switch.
1438 */
1439 err = -EBUSY;
1440 goto out;
1441 }
1442 }
1443
1444 /* success */
1445 iwl_teardown_interface(priv, vif, true);
1446 vif->type = newviftype;
1447 vif->p2p = newp2p;
1448 err = iwl_setup_interface(priv, ctx);
1449 WARN_ON(err);
1450 /*
1451 * We've switched internally, but submitting to the
1452 * device may have failed for some reason. Mask this
1453 * error, because otherwise mac80211 will not switch
1454 * (and set the interface type back) and we'll be
1455 * out of sync with it.
1456 */
1457 err = 0;
1458
1459 out:
Johannes Bergb1eea292012-03-06 13:30:42 -08001460 mutex_unlock(&priv->mutex);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001461 IWL_DEBUG_MAC80211(priv, "leave\n");
1462
1463 return err;
1464}
1465
David Spinadel50c1e9a2012-04-16 14:43:30 -07001466int iwlagn_mac_hw_scan(struct ieee80211_hw *hw,
1467 struct ieee80211_vif *vif,
1468 struct cfg80211_scan_request *req)
Wey-Yi Guyba4c5312011-11-10 06:55:15 -08001469{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001470 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guyba4c5312011-11-10 06:55:15 -08001471 int ret;
1472
1473 IWL_DEBUG_MAC80211(priv, "enter\n");
1474
1475 if (req->n_channels == 0)
1476 return -EINVAL;
1477
Johannes Bergb1eea292012-03-06 13:30:42 -08001478 mutex_lock(&priv->mutex);
Wey-Yi Guyba4c5312011-11-10 06:55:15 -08001479
1480 /*
1481 * If an internal scan is in progress, just set
1482 * up the scan_request as per above.
1483 */
1484 if (priv->scan_type != IWL_SCAN_NORMAL) {
1485 IWL_DEBUG_SCAN(priv,
1486 "SCAN request during internal scan - defer\n");
1487 priv->scan_request = req;
1488 priv->scan_vif = vif;
1489 ret = 0;
1490 } else {
1491 priv->scan_request = req;
1492 priv->scan_vif = vif;
1493 /*
1494 * mac80211 will only ask for one band at a time
1495 * so using channels[0] here is ok
1496 */
1497 ret = iwl_scan_initiate(priv, vif, IWL_SCAN_NORMAL,
1498 req->channels[0]->band);
1499 if (ret) {
1500 priv->scan_request = NULL;
1501 priv->scan_vif = NULL;
1502 }
1503 }
1504
1505 IWL_DEBUG_MAC80211(priv, "leave\n");
1506
Johannes Bergb1eea292012-03-06 13:30:42 -08001507 mutex_unlock(&priv->mutex);
Wey-Yi Guyba4c5312011-11-10 06:55:15 -08001508
1509 return ret;
1510}
1511
Wey-Yi Guy76b29332011-11-10 06:55:16 -08001512static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1513{
Johannes Berg9451ca12012-03-05 11:24:23 -08001514 struct iwl_addsta_cmd cmd = {
1515 .mode = STA_CONTROL_MODIFY_MSK,
1516 .station_flags_msk = STA_FLG_PWR_SAVE_MSK,
1517 .sta.sta_id = sta_id,
1518 };
Wey-Yi Guy76b29332011-11-10 06:55:16 -08001519
Johannes Berg9451ca12012-03-05 11:24:23 -08001520 iwl_send_add_sta(priv, &cmd, CMD_ASYNC);
Wey-Yi Guy76b29332011-11-10 06:55:16 -08001521}
1522
David Spinadel50c1e9a2012-04-16 14:43:30 -07001523void iwlagn_mac_sta_notify(struct ieee80211_hw *hw,
Wey-Yi Guy76b29332011-11-10 06:55:16 -08001524 struct ieee80211_vif *vif,
1525 enum sta_notify_cmd cmd,
1526 struct ieee80211_sta *sta)
1527{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001528 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy76b29332011-11-10 06:55:16 -08001529 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
1530 int sta_id;
1531
1532 IWL_DEBUG_MAC80211(priv, "enter\n");
1533
1534 switch (cmd) {
1535 case STA_NOTIFY_SLEEP:
1536 WARN_ON(!sta_priv->client);
1537 sta_priv->asleep = true;
1538 if (atomic_read(&sta_priv->pending_frames) > 0)
1539 ieee80211_sta_block_awake(hw, sta, true);
1540 break;
1541 case STA_NOTIFY_AWAKE:
1542 WARN_ON(!sta_priv->client);
1543 if (!sta_priv->asleep)
1544 break;
1545 sta_priv->asleep = false;
1546 sta_id = iwl_sta_id(sta);
1547 if (sta_id != IWL_INVALID_STATION)
1548 iwl_sta_modify_ps_wake(priv, sta_id);
1549 break;
1550 default:
1551 break;
1552 }
1553 IWL_DEBUG_MAC80211(priv, "leave\n");
1554}
1555
Wey-Yi Guy73356132011-11-10 06:55:11 -08001556struct ieee80211_ops iwlagn_hw_ops = {
1557 .tx = iwlagn_mac_tx,
1558 .start = iwlagn_mac_start,
1559 .stop = iwlagn_mac_stop,
1560#ifdef CONFIG_PM_SLEEP
1561 .suspend = iwlagn_mac_suspend,
1562 .resume = iwlagn_mac_resume,
1563#endif
1564 .add_interface = iwlagn_mac_add_interface,
1565 .remove_interface = iwlagn_mac_remove_interface,
1566 .change_interface = iwlagn_mac_change_interface,
1567 .config = iwlagn_mac_config,
1568 .configure_filter = iwlagn_configure_filter,
1569 .set_key = iwlagn_mac_set_key,
1570 .update_tkip_key = iwlagn_mac_update_tkip_key,
1571 .set_rekey_data = iwlagn_mac_set_rekey_data,
1572 .conf_tx = iwlagn_mac_conf_tx,
1573 .bss_info_changed = iwlagn_bss_info_changed,
1574 .ampdu_action = iwlagn_mac_ampdu_action,
1575 .hw_scan = iwlagn_mac_hw_scan,
1576 .sta_notify = iwlagn_mac_sta_notify,
Johannes Bergfb5fe5b2012-03-05 11:24:29 -08001577 .sta_state = iwlagn_mac_sta_state,
Wey-Yi Guy73356132011-11-10 06:55:11 -08001578 .channel_switch = iwlagn_mac_channel_switch,
1579 .flush = iwlagn_mac_flush,
1580 .tx_last_beacon = iwlagn_mac_tx_last_beacon,
1581 .remain_on_channel = iwlagn_mac_remain_on_channel,
1582 .cancel_remain_on_channel = iwlagn_mac_cancel_remain_on_channel,
1583 .rssi_callback = iwlagn_mac_rssi_callback,
1584 CFG80211_TESTMODE_CMD(iwlagn_mac_testmode_cmd)
1585 CFG80211_TESTMODE_DUMP(iwlagn_mac_testmode_dump)
Wey-Yi Guy73356132011-11-10 06:55:11 -08001586 .set_tim = iwlagn_mac_set_tim,
1587};
1588
1589/* This function both allocates and initializes hw and priv. */
1590struct ieee80211_hw *iwl_alloc_all(void)
1591{
1592 struct iwl_priv *priv;
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001593 struct iwl_op_mode *op_mode;
Wey-Yi Guy73356132011-11-10 06:55:11 -08001594 /* mac80211 allocates memory for this device instance, including
1595 * space for this driver's private structure */
1596 struct ieee80211_hw *hw;
1597
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001598 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv) +
1599 sizeof(struct iwl_op_mode), &iwlagn_hw_ops);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001600 if (!hw)
1601 goto out;
1602
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001603 op_mode = hw->priv;
1604 priv = IWL_OP_MODE_GET_DVM(op_mode);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001605 priv->hw = hw;
1606
1607out:
1608 return hw;
1609}