1 /******************************************************************************
3 * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
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.
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
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
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/slab.h>
33 #include <linux/dma-mapping.h>
34 #include <linux/delay.h>
35 #include <linux/sched.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/firmware.h>
39 #include <linux/etherdevice.h>
40 #include <linux/if_arp.h>
42 #include <net/mac80211.h>
44 #include <asm/div64.h>
46 #include "iwl-eeprom.h"
51 #include "iwl-agn-calib.h"
53 #include "iwl-shared.h"
55 #include "iwl-trans.h"
57 /*****************************************************************************
59 * mac80211 entry point functions
61 *****************************************************************************/
63 static const struct ieee80211_iface_limit iwlagn_sta_ap_limits
[] = {
66 .types
= BIT(NL80211_IFTYPE_STATION
),
70 .types
= BIT(NL80211_IFTYPE_AP
),
74 static const struct ieee80211_iface_limit iwlagn_2sta_limits
[] = {
77 .types
= BIT(NL80211_IFTYPE_STATION
),
81 static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits
[] = {
84 .types
= BIT(NL80211_IFTYPE_STATION
),
88 .types
= BIT(NL80211_IFTYPE_P2P_GO
) |
89 BIT(NL80211_IFTYPE_AP
),
93 static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits
[] = {
96 .types
= BIT(NL80211_IFTYPE_STATION
),
100 .types
= BIT(NL80211_IFTYPE_P2P_CLIENT
),
104 static const struct ieee80211_iface_combination
105 iwlagn_iface_combinations_dualmode
[] = {
106 { .num_different_channels
= 1,
108 .beacon_int_infra_match
= true,
109 .limits
= iwlagn_sta_ap_limits
,
110 .n_limits
= ARRAY_SIZE(iwlagn_sta_ap_limits
),
112 { .num_different_channels
= 1,
114 .limits
= iwlagn_2sta_limits
,
115 .n_limits
= ARRAY_SIZE(iwlagn_2sta_limits
),
119 static const struct ieee80211_iface_combination
120 iwlagn_iface_combinations_p2p
[] = {
121 { .num_different_channels
= 1,
123 .beacon_int_infra_match
= true,
124 .limits
= iwlagn_p2p_sta_go_limits
,
125 .n_limits
= ARRAY_SIZE(iwlagn_p2p_sta_go_limits
),
127 { .num_different_channels
= 1,
129 .limits
= iwlagn_p2p_2sta_limits
,
130 .n_limits
= ARRAY_SIZE(iwlagn_p2p_2sta_limits
),
135 * Not a mac80211 entry point function, but it fits in with all the
136 * other mac80211 functions grouped here.
138 int iwlagn_mac_setup_register(struct iwl_priv
*priv
,
139 struct iwlagn_ucode_capabilities
*capa
)
142 struct ieee80211_hw
*hw
= priv
->hw
;
143 struct iwl_rxon_context
*ctx
;
145 hw
->rate_control_algorithm
= "iwl-agn-rs";
147 /* Tell mac80211 our characteristics */
148 hw
->flags
= IEEE80211_HW_SIGNAL_DBM
|
149 IEEE80211_HW_AMPDU_AGGREGATION
|
150 IEEE80211_HW_NEED_DTIM_PERIOD
|
151 IEEE80211_HW_SPECTRUM_MGMT
|
152 IEEE80211_HW_REPORTS_TX_ACK_STATUS
;
155 * Including the following line will crash some AP's. This
156 * workaround removes the stimulus which causes the crash until
157 * the AP software can be fixed.
158 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
161 hw
->flags
|= IEEE80211_HW_SUPPORTS_PS
|
162 IEEE80211_HW_SUPPORTS_DYNAMIC_PS
;
164 if (cfg(priv
)->sku
& EEPROM_SKU_CAP_11N_ENABLE
)
165 hw
->flags
|= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS
|
166 IEEE80211_HW_SUPPORTS_STATIC_SMPS
;
168 if (capa
->flags
& IWL_UCODE_TLV_FLAGS_MFP
)
169 hw
->flags
|= IEEE80211_HW_MFP_CAPABLE
;
171 hw
->sta_data_size
= sizeof(struct iwl_station_priv
);
172 hw
->vif_data_size
= sizeof(struct iwl_vif_priv
);
174 for_each_context(priv
, ctx
) {
175 hw
->wiphy
->interface_modes
|= ctx
->interface_modes
;
176 hw
->wiphy
->interface_modes
|= ctx
->exclusive_interface_modes
;
179 BUILD_BUG_ON(NUM_IWL_RXON_CTX
!= 2);
181 if (hw
->wiphy
->interface_modes
& BIT(NL80211_IFTYPE_P2P_CLIENT
)) {
182 hw
->wiphy
->iface_combinations
= iwlagn_iface_combinations_p2p
;
183 hw
->wiphy
->n_iface_combinations
=
184 ARRAY_SIZE(iwlagn_iface_combinations_p2p
);
185 } else if (hw
->wiphy
->interface_modes
& BIT(NL80211_IFTYPE_AP
)) {
186 hw
->wiphy
->iface_combinations
=
187 iwlagn_iface_combinations_dualmode
;
188 hw
->wiphy
->n_iface_combinations
=
189 ARRAY_SIZE(iwlagn_iface_combinations_dualmode
);
192 hw
->wiphy
->max_remain_on_channel_duration
= 1000;
194 hw
->wiphy
->flags
|= WIPHY_FLAG_CUSTOM_REGULATORY
|
195 WIPHY_FLAG_DISABLE_BEACON_HINTS
|
198 if (trans(priv
)->ucode_wowlan
.code
.len
&&
199 device_can_wakeup(trans(priv
)->dev
)) {
200 hw
->wiphy
->wowlan
.flags
= WIPHY_WOWLAN_MAGIC_PKT
|
201 WIPHY_WOWLAN_DISCONNECT
|
202 WIPHY_WOWLAN_EAP_IDENTITY_REQ
|
203 WIPHY_WOWLAN_RFKILL_RELEASE
;
204 if (!iwlagn_mod_params
.sw_crypto
)
205 hw
->wiphy
->wowlan
.flags
|=
206 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY
|
207 WIPHY_WOWLAN_GTK_REKEY_FAILURE
;
209 hw
->wiphy
->wowlan
.n_patterns
= IWLAGN_WOWLAN_MAX_PATTERNS
;
210 hw
->wiphy
->wowlan
.pattern_min_len
=
211 IWLAGN_WOWLAN_MIN_PATTERN_LEN
;
212 hw
->wiphy
->wowlan
.pattern_max_len
=
213 IWLAGN_WOWLAN_MAX_PATTERN_LEN
;
216 if (iwlagn_mod_params
.power_save
)
217 hw
->wiphy
->flags
|= WIPHY_FLAG_PS_ON_BY_DEFAULT
;
219 hw
->wiphy
->flags
&= ~WIPHY_FLAG_PS_ON_BY_DEFAULT
;
221 hw
->wiphy
->max_scan_ssids
= PROBE_OPTION_MAX
;
222 /* we create the 802.11 header and a zero-length SSID element */
223 hw
->wiphy
->max_scan_ie_len
= capa
->max_probe_length
- 24 - 2;
225 /* Default value; 4 EDCA QOS priorities */
228 hw
->max_listen_interval
= IWL_CONN_MAX_LISTEN_INTERVAL
;
230 if (priv
->bands
[IEEE80211_BAND_2GHZ
].n_channels
)
231 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] =
232 &priv
->bands
[IEEE80211_BAND_2GHZ
];
233 if (priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
)
234 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] =
235 &priv
->bands
[IEEE80211_BAND_5GHZ
];
237 hw
->wiphy
->hw_version
= trans(priv
)->hw_id
;
241 ret
= ieee80211_register_hw(priv
->hw
);
243 IWL_ERR(priv
, "Failed to register hw (error %d)\n", ret
);
246 priv
->mac80211_registered
= 1;
251 void iwlagn_mac_unregister(struct iwl_priv
*priv
)
253 if (!priv
->mac80211_registered
)
256 ieee80211_unregister_hw(priv
->hw
);
257 priv
->mac80211_registered
= 0;
260 static int __iwl_up(struct iwl_priv
*priv
)
262 struct iwl_rxon_context
*ctx
;
265 lockdep_assert_held(&priv
->shrd
->mutex
);
267 if (test_bit(STATUS_EXIT_PENDING
, &priv
->shrd
->status
)) {
268 IWL_WARN(priv
, "Exit pending; will not bring the NIC up\n");
272 for_each_context(priv
, ctx
) {
273 ret
= iwlagn_alloc_bcast_station(priv
, ctx
);
275 iwl_dealloc_bcast_stations(priv
);
280 ret
= iwl_run_init_ucode(trans(priv
));
282 IWL_ERR(priv
, "Failed to run INIT ucode: %d\n", ret
);
286 ret
= iwl_load_ucode_wait_alive(trans(priv
), IWL_UCODE_REGULAR
);
288 IWL_ERR(priv
, "Failed to start RT ucode: %d\n", ret
);
292 ret
= iwl_alive_start(priv
);
298 set_bit(STATUS_EXIT_PENDING
, &priv
->shrd
->status
);
300 clear_bit(STATUS_EXIT_PENDING
, &priv
->shrd
->status
);
302 IWL_ERR(priv
, "Unable to initialize device.\n");
306 static int iwlagn_mac_start(struct ieee80211_hw
*hw
)
308 struct iwl_priv
*priv
= hw
->priv
;
311 IWL_DEBUG_MAC80211(priv
, "enter\n");
313 /* we should be verifying the device is ready to be opened */
314 mutex_lock(&priv
->shrd
->mutex
);
315 ret
= __iwl_up(priv
);
316 mutex_unlock(&priv
->shrd
->mutex
);
320 IWL_DEBUG_INFO(priv
, "Start UP work done.\n");
322 /* Now we should be done, and the READY bit should be set. */
323 if (WARN_ON(!test_bit(STATUS_READY
, &priv
->shrd
->status
)))
326 iwlagn_led_enable(priv
);
329 IWL_DEBUG_MAC80211(priv
, "leave\n");
333 static void iwlagn_mac_stop(struct ieee80211_hw
*hw
)
335 struct iwl_priv
*priv
= hw
->priv
;
337 IWL_DEBUG_MAC80211(priv
, "enter\n");
346 flush_workqueue(priv
->shrd
->workqueue
);
348 /* User space software may expect getting rfkill changes
349 * even if interface is down, trans->down will leave the RF
350 * kill interrupt enabled
352 iwl_trans_stop_hw(trans(priv
));
354 IWL_DEBUG_MAC80211(priv
, "leave\n");
357 static void iwlagn_mac_set_rekey_data(struct ieee80211_hw
*hw
,
358 struct ieee80211_vif
*vif
,
359 struct cfg80211_gtk_rekey_data
*data
)
361 struct iwl_priv
*priv
= hw
->priv
;
363 if (iwlagn_mod_params
.sw_crypto
)
366 IWL_DEBUG_MAC80211(priv
, "enter\n");
367 mutex_lock(&priv
->shrd
->mutex
);
369 if (priv
->contexts
[IWL_RXON_CTX_BSS
].vif
!= vif
)
372 memcpy(priv
->kek
, data
->kek
, NL80211_KEK_LEN
);
373 memcpy(priv
->kck
, data
->kck
, NL80211_KCK_LEN
);
375 cpu_to_le64(be64_to_cpup((__be64
*)&data
->replay_ctr
));
376 priv
->have_rekey_data
= true;
379 mutex_unlock(&priv
->shrd
->mutex
);
380 IWL_DEBUG_MAC80211(priv
, "leave\n");
383 #ifdef CONFIG_PM_SLEEP
385 static int iwlagn_mac_suspend(struct ieee80211_hw
*hw
,
386 struct cfg80211_wowlan
*wowlan
)
388 struct iwl_priv
*priv
= hw
->priv
;
389 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
392 if (WARN_ON(!wowlan
))
395 IWL_DEBUG_MAC80211(priv
, "enter\n");
396 mutex_lock(&priv
->shrd
->mutex
);
398 /* Don't attempt WoWLAN when not associated, tear down instead. */
399 if (!ctx
->vif
|| ctx
->vif
->type
!= NL80211_IFTYPE_STATION
||
400 !iwl_is_associated_ctx(ctx
)) {
405 ret
= iwlagn_suspend(priv
, hw
, wowlan
);
409 device_set_wakeup_enable(trans(priv
)->dev
, true);
411 /* Now let the ucode operate on its own */
412 iwl_write32(trans(priv
), CSR_UCODE_DRV_GP1_SET
,
413 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE
);
418 priv
->shrd
->wowlan
= false;
419 iwlagn_prepare_restart(priv
);
420 ieee80211_restart_hw(priv
->hw
);
422 mutex_unlock(&priv
->shrd
->mutex
);
423 IWL_DEBUG_MAC80211(priv
, "leave\n");
428 static int iwlagn_mac_resume(struct ieee80211_hw
*hw
)
430 struct iwl_priv
*priv
= hw
->priv
;
431 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
432 struct ieee80211_vif
*vif
;
434 u32 base
, status
= 0xffffffff;
437 IWL_DEBUG_MAC80211(priv
, "enter\n");
438 mutex_lock(&priv
->shrd
->mutex
);
440 iwl_write32(trans(priv
), CSR_UCODE_DRV_GP1_CLR
,
441 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE
);
443 base
= priv
->shrd
->device_pointers
.error_event_table
;
444 if (iwlagn_hw_valid_rtc_data_addr(base
)) {
445 spin_lock_irqsave(&trans(priv
)->reg_lock
, flags
);
446 ret
= iwl_grab_nic_access_silent(trans(priv
));
448 iwl_write32(trans(priv
), HBUS_TARG_MEM_RADDR
, base
);
449 status
= iwl_read32(trans(priv
), HBUS_TARG_MEM_RDAT
);
450 iwl_release_nic_access(trans(priv
));
452 spin_unlock_irqrestore(&trans(priv
)->reg_lock
, flags
);
454 #ifdef CONFIG_IWLWIFI_DEBUGFS
456 struct iwl_trans
*trans
= trans(priv
);
457 if (!priv
->wowlan_sram
)
459 kzalloc(trans
->ucode_wowlan
.data
.len
,
462 if (priv
->wowlan_sram
)
463 _iwl_read_targ_mem_words(
464 trans(priv
), 0x800000,
466 trans
->ucode_wowlan
.data
.len
/ 4);
471 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
474 priv
->shrd
->wowlan
= false;
476 device_set_wakeup_enable(trans(priv
)->dev
, false);
478 iwlagn_prepare_restart(priv
);
480 memset((void *)&ctx
->active
, 0, sizeof(ctx
->active
));
481 iwl_connection_init_rx_config(priv
, ctx
);
482 iwlagn_set_rxon_chain(priv
, ctx
);
484 mutex_unlock(&priv
->shrd
->mutex
);
485 IWL_DEBUG_MAC80211(priv
, "leave\n");
487 ieee80211_resume_disconnect(vif
);
494 static void iwlagn_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
496 struct iwl_priv
*priv
= hw
->priv
;
498 IWL_DEBUG_TX(priv
, "dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
499 ieee80211_get_tx_rate(hw
, IEEE80211_SKB_CB(skb
))->bitrate
);
501 if (iwlagn_tx_skb(priv
, skb
))
502 dev_kfree_skb_any(skb
);
505 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw
*hw
,
506 struct ieee80211_vif
*vif
,
507 struct ieee80211_key_conf
*keyconf
,
508 struct ieee80211_sta
*sta
,
509 u32 iv32
, u16
*phase1key
)
511 struct iwl_priv
*priv
= hw
->priv
;
513 iwl_update_tkip_key(priv
, vif
, keyconf
, sta
, iv32
, phase1key
);
516 static int iwlagn_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
517 struct ieee80211_vif
*vif
,
518 struct ieee80211_sta
*sta
,
519 struct ieee80211_key_conf
*key
)
521 struct iwl_priv
*priv
= hw
->priv
;
522 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
523 struct iwl_rxon_context
*ctx
= vif_priv
->ctx
;
525 bool is_default_wep_key
= false;
527 IWL_DEBUG_MAC80211(priv
, "enter\n");
529 if (iwlagn_mod_params
.sw_crypto
) {
530 IWL_DEBUG_MAC80211(priv
, "leave - hwcrypto disabled\n");
534 switch (key
->cipher
) {
535 case WLAN_CIPHER_SUITE_TKIP
:
536 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_MMIC
;
538 case WLAN_CIPHER_SUITE_CCMP
:
539 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
546 * We could program these keys into the hardware as well, but we
547 * don't expect much multicast traffic in IBSS and having keys
548 * for more stations is probably more useful.
550 * Mark key TX-only and return 0.
552 if (vif
->type
== NL80211_IFTYPE_ADHOC
&&
553 !(key
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
)) {
554 key
->hw_key_idx
= WEP_INVALID_OFFSET
;
558 /* If they key was TX-only, accept deletion */
559 if (cmd
== DISABLE_KEY
&& key
->hw_key_idx
== WEP_INVALID_OFFSET
)
562 mutex_lock(&priv
->shrd
->mutex
);
563 iwl_scan_cancel_timeout(priv
, 100);
565 BUILD_BUG_ON(WEP_INVALID_OFFSET
== IWLAGN_HW_KEY_DEFAULT
);
568 * If we are getting WEP group key and we didn't receive any key mapping
569 * so far, we are in legacy wep mode (group key only), otherwise we are
571 * In legacy wep mode, we use another host command to the uCode.
573 if ((key
->cipher
== WLAN_CIPHER_SUITE_WEP40
||
574 key
->cipher
== WLAN_CIPHER_SUITE_WEP104
) && !sta
) {
576 is_default_wep_key
= !ctx
->key_mapping_keys
;
579 key
->hw_key_idx
== IWLAGN_HW_KEY_DEFAULT
;
585 if (is_default_wep_key
) {
586 ret
= iwl_set_default_wep_key(priv
, vif_priv
->ctx
, key
);
589 ret
= iwl_set_dynamic_key(priv
, vif_priv
->ctx
, key
, sta
);
592 * can't add key for RX, but we don't need it
593 * in the device for TX so still return 0
596 key
->hw_key_idx
= WEP_INVALID_OFFSET
;
599 IWL_DEBUG_MAC80211(priv
, "enable hwcrypto key\n");
602 if (is_default_wep_key
)
603 ret
= iwl_remove_default_wep_key(priv
, ctx
, key
);
605 ret
= iwl_remove_dynamic_key(priv
, ctx
, key
, sta
);
607 IWL_DEBUG_MAC80211(priv
, "disable hwcrypto key\n");
613 mutex_unlock(&priv
->shrd
->mutex
);
614 IWL_DEBUG_MAC80211(priv
, "leave\n");
619 static int iwlagn_mac_ampdu_action(struct ieee80211_hw
*hw
,
620 struct ieee80211_vif
*vif
,
621 enum ieee80211_ampdu_mlme_action action
,
622 struct ieee80211_sta
*sta
, u16 tid
, u16
*ssn
,
625 struct iwl_priv
*priv
= hw
->priv
;
627 struct iwl_station_priv
*sta_priv
= (void *) sta
->drv_priv
;
629 IWL_DEBUG_HT(priv
, "A-MPDU action on addr %pM tid %d\n",
632 if (!(cfg(priv
)->sku
& EEPROM_SKU_CAP_11N_ENABLE
))
635 IWL_DEBUG_MAC80211(priv
, "enter\n");
636 mutex_lock(&priv
->shrd
->mutex
);
639 case IEEE80211_AMPDU_RX_START
:
640 if (iwlagn_mod_params
.disable_11n
& IWL_DISABLE_HT_RXAGG
)
642 IWL_DEBUG_HT(priv
, "start Rx\n");
643 ret
= iwl_sta_rx_agg_start(priv
, sta
, tid
, *ssn
);
645 case IEEE80211_AMPDU_RX_STOP
:
646 IWL_DEBUG_HT(priv
, "stop Rx\n");
647 ret
= iwl_sta_rx_agg_stop(priv
, sta
, tid
);
648 if (test_bit(STATUS_EXIT_PENDING
, &priv
->shrd
->status
))
651 case IEEE80211_AMPDU_TX_START
:
652 if (iwlagn_mod_params
.disable_11n
& IWL_DISABLE_HT_TXAGG
)
654 IWL_DEBUG_HT(priv
, "start Tx\n");
655 ret
= iwlagn_tx_agg_start(priv
, vif
, sta
, tid
, ssn
);
657 case IEEE80211_AMPDU_TX_STOP
:
658 IWL_DEBUG_HT(priv
, "stop Tx\n");
659 ret
= iwlagn_tx_agg_stop(priv
, vif
, sta
, tid
);
660 if ((ret
== 0) && (priv
->agg_tids_count
> 0)) {
661 priv
->agg_tids_count
--;
662 IWL_DEBUG_HT(priv
, "priv->agg_tids_count = %u\n",
663 priv
->agg_tids_count
);
665 if (test_bit(STATUS_EXIT_PENDING
, &priv
->shrd
->status
))
667 if (!priv
->agg_tids_count
&& cfg(priv
)->ht_params
&&
668 cfg(priv
)->ht_params
->use_rts_for_aggregation
) {
670 * switch off RTS/CTS if it was previously enabled
672 sta_priv
->lq_sta
.lq
.general_params
.flags
&=
673 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK
;
674 iwl_send_lq_cmd(priv
, iwl_rxon_ctx_from_vif(vif
),
675 &sta_priv
->lq_sta
.lq
, CMD_ASYNC
, false);
678 case IEEE80211_AMPDU_TX_OPERATIONAL
:
679 ret
= iwlagn_tx_agg_oper(priv
, vif
, sta
, tid
, buf_size
);
682 mutex_unlock(&priv
->shrd
->mutex
);
683 IWL_DEBUG_MAC80211(priv
, "leave\n");
687 static int iwlagn_mac_sta_add(struct ieee80211_hw
*hw
,
688 struct ieee80211_vif
*vif
,
689 struct ieee80211_sta
*sta
)
691 struct iwl_priv
*priv
= hw
->priv
;
692 struct iwl_station_priv
*sta_priv
= (void *)sta
->drv_priv
;
693 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
694 bool is_ap
= vif
->type
== NL80211_IFTYPE_STATION
;
698 IWL_DEBUG_MAC80211(priv
, "received request to add station %pM\n",
700 mutex_lock(&priv
->shrd
->mutex
);
701 IWL_DEBUG_INFO(priv
, "proceeding to add station %pM\n",
703 sta_priv
->sta_id
= IWL_INVALID_STATION
;
705 atomic_set(&sta_priv
->pending_frames
, 0);
706 if (vif
->type
== NL80211_IFTYPE_AP
)
707 sta_priv
->client
= true;
709 ret
= iwl_add_station_common(priv
, vif_priv
->ctx
, sta
->addr
,
710 is_ap
, sta
, &sta_id
);
712 IWL_ERR(priv
, "Unable to add station %pM (%d)\n",
714 /* Should we return success if return code is EEXIST ? */
718 sta_priv
->sta_id
= sta_id
;
720 /* Initialize rate scaling */
721 IWL_DEBUG_INFO(priv
, "Initializing rate scaling for station %pM\n",
723 iwl_rs_rate_init(priv
, sta
, sta_id
);
725 mutex_unlock(&priv
->shrd
->mutex
);
726 IWL_DEBUG_MAC80211(priv
, "leave\n");
731 static void iwlagn_mac_channel_switch(struct ieee80211_hw
*hw
,
732 struct ieee80211_channel_switch
*ch_switch
)
734 struct iwl_priv
*priv
= hw
->priv
;
735 const struct iwl_channel_info
*ch_info
;
736 struct ieee80211_conf
*conf
= &hw
->conf
;
737 struct ieee80211_channel
*channel
= ch_switch
->channel
;
738 struct iwl_ht_config
*ht_conf
= &priv
->current_ht_config
;
741 * When we add support for multiple interfaces, we need to
742 * revisit this. The channel switch command in the device
743 * only affects the BSS context, but what does that really
744 * mean? And what if we get a CSA on the second interface?
745 * This needs a lot of work.
747 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
750 IWL_DEBUG_MAC80211(priv
, "enter\n");
752 mutex_lock(&priv
->shrd
->mutex
);
754 if (iwl_is_rfkill(priv
->shrd
))
757 if (test_bit(STATUS_EXIT_PENDING
, &priv
->shrd
->status
) ||
758 test_bit(STATUS_SCANNING
, &priv
->shrd
->status
) ||
759 test_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->shrd
->status
))
762 if (!iwl_is_associated_ctx(ctx
))
765 if (!cfg(priv
)->lib
->set_channel_switch
)
768 ch
= channel
->hw_value
;
769 if (le16_to_cpu(ctx
->active
.channel
) == ch
)
772 ch_info
= iwl_get_channel_info(priv
, channel
->band
, ch
);
773 if (!is_channel_valid(ch_info
)) {
774 IWL_DEBUG_MAC80211(priv
, "invalid channel\n");
778 spin_lock_irq(&priv
->shrd
->lock
);
780 priv
->current_ht_config
.smps
= conf
->smps_mode
;
782 /* Configure HT40 channels */
783 ctx
->ht
.enabled
= conf_is_ht(conf
);
785 iwlagn_config_ht40(conf
, ctx
);
787 ctx
->ht
.is_40mhz
= false;
789 if ((le16_to_cpu(ctx
->staging
.channel
) != ch
))
790 ctx
->staging
.flags
= 0;
792 iwl_set_rxon_channel(priv
, channel
, ctx
);
793 iwl_set_rxon_ht(priv
, ht_conf
);
794 iwl_set_flags_for_band(priv
, ctx
, channel
->band
, ctx
->vif
);
796 spin_unlock_irq(&priv
->shrd
->lock
);
800 * at this point, staging_rxon has the
801 * configuration for channel switch
803 set_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->shrd
->status
);
804 priv
->switch_channel
= cpu_to_le16(ch
);
805 if (cfg(priv
)->lib
->set_channel_switch(priv
, ch_switch
)) {
806 clear_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->shrd
->status
);
807 priv
->switch_channel
= 0;
808 ieee80211_chswitch_done(ctx
->vif
, false);
812 mutex_unlock(&priv
->shrd
->mutex
);
813 IWL_DEBUG_MAC80211(priv
, "leave\n");
816 static void iwlagn_configure_filter(struct ieee80211_hw
*hw
,
817 unsigned int changed_flags
,
818 unsigned int *total_flags
,
821 struct iwl_priv
*priv
= hw
->priv
;
822 __le32 filter_or
= 0, filter_nand
= 0;
823 struct iwl_rxon_context
*ctx
;
825 #define CHK(test, flag) do { \
826 if (*total_flags & (test)) \
827 filter_or |= (flag); \
829 filter_nand |= (flag); \
832 IWL_DEBUG_MAC80211(priv
, "Enter: changed: 0x%x, total: 0x%x\n",
833 changed_flags
, *total_flags
);
835 CHK(FIF_OTHER_BSS
| FIF_PROMISC_IN_BSS
, RXON_FILTER_PROMISC_MSK
);
836 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
837 CHK(FIF_CONTROL
, RXON_FILTER_CTL2HOST_MSK
| RXON_FILTER_PROMISC_MSK
);
838 CHK(FIF_BCN_PRBRESP_PROMISC
, RXON_FILTER_BCON_AWARE_MSK
);
842 mutex_lock(&priv
->shrd
->mutex
);
844 for_each_context(priv
, ctx
) {
845 ctx
->staging
.filter_flags
&= ~filter_nand
;
846 ctx
->staging
.filter_flags
|= filter_or
;
849 * Not committing directly because hardware can perform a scan,
850 * but we'll eventually commit the filter flags change anyway.
854 mutex_unlock(&priv
->shrd
->mutex
);
857 * Receiving all multicast frames is always enabled by the
858 * default flags setup in iwl_connection_init_rx_config()
859 * since we currently do not support programming multicast
860 * filters into the device.
862 *total_flags
&= FIF_OTHER_BSS
| FIF_ALLMULTI
| FIF_PROMISC_IN_BSS
|
863 FIF_BCN_PRBRESP_PROMISC
| FIF_CONTROL
;
866 static void iwlagn_mac_flush(struct ieee80211_hw
*hw
, bool drop
)
868 struct iwl_priv
*priv
= hw
->priv
;
870 mutex_lock(&priv
->shrd
->mutex
);
871 IWL_DEBUG_MAC80211(priv
, "enter\n");
873 if (test_bit(STATUS_EXIT_PENDING
, &priv
->shrd
->status
)) {
874 IWL_DEBUG_TX(priv
, "Aborting flush due to device shutdown\n");
877 if (iwl_is_rfkill(priv
->shrd
)) {
878 IWL_DEBUG_TX(priv
, "Aborting flush due to RF Kill\n");
883 * mac80211 will not push any more frames for transmit
884 * until the flush is completed
887 IWL_DEBUG_MAC80211(priv
, "send flush command\n");
888 if (iwlagn_txfifo_flush(priv
, IWL_DROP_ALL
)) {
889 IWL_ERR(priv
, "flush request fail\n");
893 IWL_DEBUG_MAC80211(priv
, "wait transmit/flush all frames\n");
894 iwl_trans_wait_tx_queue_empty(trans(priv
));
896 mutex_unlock(&priv
->shrd
->mutex
);
897 IWL_DEBUG_MAC80211(priv
, "leave\n");
900 static int iwlagn_mac_remain_on_channel(struct ieee80211_hw
*hw
,
901 struct ieee80211_channel
*channel
,
902 enum nl80211_channel_type channel_type
,
905 struct iwl_priv
*priv
= hw
->priv
;
906 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_PAN
];
909 if (!(priv
->shrd
->valid_contexts
& BIT(IWL_RXON_CTX_PAN
)))
912 if (!(ctx
->interface_modes
& BIT(NL80211_IFTYPE_P2P_CLIENT
)))
915 IWL_DEBUG_MAC80211(priv
, "enter\n");
916 mutex_lock(&priv
->shrd
->mutex
);
918 if (test_bit(STATUS_SCAN_HW
, &priv
->shrd
->status
)) {
923 priv
->hw_roc_channel
= channel
;
924 priv
->hw_roc_chantype
= channel_type
;
925 /* convert from ms to TU */
926 priv
->hw_roc_duration
= DIV_ROUND_UP(1000 * duration
, 1024);
927 priv
->hw_roc_start_notified
= false;
928 cancel_delayed_work(&priv
->hw_roc_disable_work
);
930 if (!ctx
->is_active
) {
931 static const struct iwl_qos_info default_qos_data
= {
934 .cw_min
= cpu_to_le16(3),
935 .cw_max
= cpu_to_le16(7),
937 .edca_txop
= cpu_to_le16(1504),
940 .cw_min
= cpu_to_le16(7),
941 .cw_max
= cpu_to_le16(15),
943 .edca_txop
= cpu_to_le16(3008),
946 .cw_min
= cpu_to_le16(15),
947 .cw_max
= cpu_to_le16(1023),
951 .cw_min
= cpu_to_le16(15),
952 .cw_max
= cpu_to_le16(1023),
958 ctx
->is_active
= true;
959 ctx
->qos_data
= default_qos_data
;
960 ctx
->staging
.dev_type
= RXON_DEV_TYPE_P2P
;
961 memcpy(ctx
->staging
.node_addr
,
962 priv
->contexts
[IWL_RXON_CTX_BSS
].staging
.node_addr
,
964 memcpy(ctx
->staging
.bssid_addr
,
965 priv
->contexts
[IWL_RXON_CTX_BSS
].staging
.node_addr
,
967 err
= iwlagn_commit_rxon(priv
, ctx
);
970 ctx
->staging
.filter_flags
|= RXON_FILTER_ASSOC_MSK
|
971 RXON_FILTER_PROMISC_MSK
|
972 RXON_FILTER_CTL2HOST_MSK
;
974 err
= iwlagn_commit_rxon(priv
, ctx
);
976 iwlagn_disable_roc(priv
);
979 priv
->hw_roc_setup
= true;
982 err
= iwl_scan_initiate(priv
, ctx
->vif
, IWL_SCAN_ROC
, channel
->band
);
984 iwlagn_disable_roc(priv
);
987 mutex_unlock(&priv
->shrd
->mutex
);
988 IWL_DEBUG_MAC80211(priv
, "leave\n");
993 static int iwlagn_mac_cancel_remain_on_channel(struct ieee80211_hw
*hw
)
995 struct iwl_priv
*priv
= hw
->priv
;
997 if (!(priv
->shrd
->valid_contexts
& BIT(IWL_RXON_CTX_PAN
)))
1000 IWL_DEBUG_MAC80211(priv
, "enter\n");
1001 mutex_lock(&priv
->shrd
->mutex
);
1002 iwl_scan_cancel_timeout(priv
, priv
->hw_roc_duration
);
1003 iwlagn_disable_roc(priv
);
1004 mutex_unlock(&priv
->shrd
->mutex
);
1005 IWL_DEBUG_MAC80211(priv
, "leave\n");
1010 static int iwlagn_mac_tx_sync(struct ieee80211_hw
*hw
,
1011 struct ieee80211_vif
*vif
,
1013 enum ieee80211_tx_sync_type type
)
1015 struct iwl_priv
*priv
= hw
->priv
;
1016 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
1017 struct iwl_rxon_context
*ctx
= vif_priv
->ctx
;
1021 if (ctx
->ctxid
!= IWL_RXON_CTX_PAN
)
1024 IWL_DEBUG_MAC80211(priv
, "enter\n");
1025 mutex_lock(&priv
->shrd
->mutex
);
1027 if (iwl_is_associated_ctx(ctx
)) {
1032 if (ctx
->preauth_bssid
|| test_bit(STATUS_SCAN_HW
,
1033 &priv
->shrd
->status
)) {
1038 ret
= iwl_add_station_common(priv
, ctx
, bssid
, true, NULL
, &sta_id
);
1042 if (WARN_ON(sta_id
!= ctx
->ap_sta_id
)) {
1044 goto out_remove_sta
;
1047 memcpy(ctx
->bssid
, bssid
, ETH_ALEN
);
1048 ctx
->preauth_bssid
= true;
1050 ret
= iwlagn_commit_rxon(priv
, ctx
);
1056 iwl_remove_station(priv
, sta_id
, bssid
);
1058 mutex_unlock(&priv
->shrd
->mutex
);
1059 IWL_DEBUG_MAC80211(priv
, "leave\n");
1064 static void iwlagn_mac_finish_tx_sync(struct ieee80211_hw
*hw
,
1065 struct ieee80211_vif
*vif
,
1067 enum ieee80211_tx_sync_type type
)
1069 struct iwl_priv
*priv
= hw
->priv
;
1070 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
1071 struct iwl_rxon_context
*ctx
= vif_priv
->ctx
;
1073 if (ctx
->ctxid
!= IWL_RXON_CTX_PAN
)
1076 IWL_DEBUG_MAC80211(priv
, "enter\n");
1077 mutex_lock(&priv
->shrd
->mutex
);
1079 if (iwl_is_associated_ctx(ctx
))
1082 iwl_remove_station(priv
, ctx
->ap_sta_id
, bssid
);
1083 ctx
->preauth_bssid
= false;
1084 /* no need to commit */
1086 mutex_unlock(&priv
->shrd
->mutex
);
1087 IWL_DEBUG_MAC80211(priv
, "leave\n");
1090 static void iwlagn_mac_rssi_callback(struct ieee80211_hw
*hw
,
1091 enum ieee80211_rssi_event rssi_event
)
1093 struct iwl_priv
*priv
= hw
->priv
;
1095 IWL_DEBUG_MAC80211(priv
, "enter\n");
1096 mutex_lock(&priv
->shrd
->mutex
);
1098 if (cfg(priv
)->bt_params
&&
1099 cfg(priv
)->bt_params
->advanced_bt_coexist
) {
1100 if (rssi_event
== RSSI_EVENT_LOW
)
1101 priv
->bt_enable_pspoll
= true;
1102 else if (rssi_event
== RSSI_EVENT_HIGH
)
1103 priv
->bt_enable_pspoll
= false;
1105 iwlagn_send_advance_bt_config(priv
);
1107 IWL_DEBUG_MAC80211(priv
, "Advanced BT coex disabled,"
1108 "ignoring RSSI callback\n");
1111 mutex_unlock(&priv
->shrd
->mutex
);
1112 IWL_DEBUG_MAC80211(priv
, "leave\n");
1115 static int iwlagn_mac_set_tim(struct ieee80211_hw
*hw
,
1116 struct ieee80211_sta
*sta
, bool set
)
1118 struct iwl_priv
*priv
= hw
->priv
;
1120 queue_work(priv
->shrd
->workqueue
, &priv
->beacon_update
);
1125 static int iwlagn_mac_conf_tx(struct ieee80211_hw
*hw
,
1126 struct ieee80211_vif
*vif
, u16 queue
,
1127 const struct ieee80211_tx_queue_params
*params
)
1129 struct iwl_priv
*priv
= hw
->priv
;
1130 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
1131 struct iwl_rxon_context
*ctx
= vif_priv
->ctx
;
1132 unsigned long flags
;
1138 IWL_DEBUG_MAC80211(priv
, "enter\n");
1140 if (!iwl_is_ready_rf(priv
->shrd
)) {
1141 IWL_DEBUG_MAC80211(priv
, "leave - RF not ready\n");
1145 if (queue
>= AC_NUM
) {
1146 IWL_DEBUG_MAC80211(priv
, "leave - queue >= AC_NUM %d\n", queue
);
1150 q
= AC_NUM
- 1 - queue
;
1152 spin_lock_irqsave(&priv
->shrd
->lock
, flags
);
1154 ctx
->qos_data
.def_qos_parm
.ac
[q
].cw_min
=
1155 cpu_to_le16(params
->cw_min
);
1156 ctx
->qos_data
.def_qos_parm
.ac
[q
].cw_max
=
1157 cpu_to_le16(params
->cw_max
);
1158 ctx
->qos_data
.def_qos_parm
.ac
[q
].aifsn
= params
->aifs
;
1159 ctx
->qos_data
.def_qos_parm
.ac
[q
].edca_txop
=
1160 cpu_to_le16((params
->txop
* 32));
1162 ctx
->qos_data
.def_qos_parm
.ac
[q
].reserved1
= 0;
1164 spin_unlock_irqrestore(&priv
->shrd
->lock
, flags
);
1166 IWL_DEBUG_MAC80211(priv
, "leave\n");
1170 static int iwlagn_mac_tx_last_beacon(struct ieee80211_hw
*hw
)
1172 struct iwl_priv
*priv
= hw
->priv
;
1174 return priv
->ibss_manager
== IWL_IBSS_MANAGER
;
1177 static int iwl_set_mode(struct iwl_priv
*priv
, struct iwl_rxon_context
*ctx
)
1179 iwl_connection_init_rx_config(priv
, ctx
);
1181 iwlagn_set_rxon_chain(priv
, ctx
);
1183 return iwlagn_commit_rxon(priv
, ctx
);
1186 static int iwl_setup_interface(struct iwl_priv
*priv
,
1187 struct iwl_rxon_context
*ctx
)
1189 struct ieee80211_vif
*vif
= ctx
->vif
;
1192 lockdep_assert_held(&priv
->shrd
->mutex
);
1195 * This variable will be correct only when there's just
1196 * a single context, but all code using it is for hardware
1197 * that supports only one context.
1199 priv
->iw_mode
= vif
->type
;
1201 ctx
->is_active
= true;
1203 err
= iwl_set_mode(priv
, ctx
);
1205 if (!ctx
->always_active
)
1206 ctx
->is_active
= false;
1210 if (cfg(priv
)->bt_params
&& cfg(priv
)->bt_params
->advanced_bt_coexist
&&
1211 vif
->type
== NL80211_IFTYPE_ADHOC
) {
1213 * pretend to have high BT traffic as long as we
1214 * are operating in IBSS mode, as this will cause
1215 * the rate scaling etc. to behave as intended.
1217 priv
->bt_traffic_load
= IWL_BT_COEX_TRAFFIC_LOAD_HIGH
;
1223 static int iwlagn_mac_add_interface(struct ieee80211_hw
*hw
,
1224 struct ieee80211_vif
*vif
)
1226 struct iwl_priv
*priv
= hw
->priv
;
1227 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
1228 struct iwl_rxon_context
*tmp
, *ctx
= NULL
;
1230 enum nl80211_iftype viftype
= ieee80211_vif_type_p2p(vif
);
1232 IWL_DEBUG_MAC80211(priv
, "enter: type %d, addr %pM\n",
1233 viftype
, vif
->addr
);
1235 cancel_delayed_work_sync(&priv
->hw_roc_disable_work
);
1237 mutex_lock(&priv
->shrd
->mutex
);
1239 iwlagn_disable_roc(priv
);
1241 if (!iwl_is_ready_rf(priv
->shrd
)) {
1242 IWL_WARN(priv
, "Try to add interface when device not ready\n");
1247 for_each_context(priv
, tmp
) {
1248 u32 possible_modes
=
1249 tmp
->interface_modes
| tmp
->exclusive_interface_modes
;
1252 /* check if this busy context is exclusive */
1253 if (tmp
->exclusive_interface_modes
&
1254 BIT(tmp
->vif
->type
)) {
1261 if (!(possible_modes
& BIT(viftype
)))
1264 /* have maybe usable context w/o interface */
1274 vif_priv
->ctx
= ctx
;
1277 err
= iwl_setup_interface(priv
, ctx
);
1282 priv
->iw_mode
= NL80211_IFTYPE_STATION
;
1284 mutex_unlock(&priv
->shrd
->mutex
);
1286 IWL_DEBUG_MAC80211(priv
, "leave\n");
1290 static void iwl_teardown_interface(struct iwl_priv
*priv
,
1291 struct ieee80211_vif
*vif
,
1294 struct iwl_rxon_context
*ctx
= iwl_rxon_ctx_from_vif(vif
);
1296 lockdep_assert_held(&priv
->shrd
->mutex
);
1298 if (priv
->scan_vif
== vif
) {
1299 iwl_scan_cancel_timeout(priv
, 200);
1300 iwl_force_scan_end(priv
);
1304 iwl_set_mode(priv
, ctx
);
1305 if (!ctx
->always_active
)
1306 ctx
->is_active
= false;
1310 * When removing the IBSS interface, overwrite the
1311 * BT traffic load with the stored one from the last
1312 * notification, if any. If this is a device that
1313 * doesn't implement this, this has no effect since
1314 * both values are the same and zero.
1316 if (vif
->type
== NL80211_IFTYPE_ADHOC
)
1317 priv
->bt_traffic_load
= priv
->last_bt_traffic_load
;
1320 static void iwlagn_mac_remove_interface(struct ieee80211_hw
*hw
,
1321 struct ieee80211_vif
*vif
)
1323 struct iwl_priv
*priv
= hw
->priv
;
1324 struct iwl_rxon_context
*ctx
= iwl_rxon_ctx_from_vif(vif
);
1326 IWL_DEBUG_MAC80211(priv
, "enter\n");
1328 mutex_lock(&priv
->shrd
->mutex
);
1330 if (WARN_ON(ctx
->vif
!= vif
)) {
1331 struct iwl_rxon_context
*tmp
;
1332 IWL_ERR(priv
, "ctx->vif = %p, vif = %p\n", ctx
->vif
, vif
);
1333 for_each_context(priv
, tmp
)
1334 IWL_ERR(priv
, "\tID = %d:\tctx = %p\tctx->vif = %p\n",
1335 tmp
->ctxid
, tmp
, tmp
->vif
);
1339 iwl_teardown_interface(priv
, vif
, false);
1341 mutex_unlock(&priv
->shrd
->mutex
);
1343 IWL_DEBUG_MAC80211(priv
, "leave\n");
1347 static int iwlagn_mac_change_interface(struct ieee80211_hw
*hw
,
1348 struct ieee80211_vif
*vif
,
1349 enum nl80211_iftype newtype
, bool newp2p
)
1351 struct iwl_priv
*priv
= hw
->priv
;
1352 struct iwl_rxon_context
*ctx
= iwl_rxon_ctx_from_vif(vif
);
1353 struct iwl_rxon_context
*bss_ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
1354 struct iwl_rxon_context
*tmp
;
1355 enum nl80211_iftype newviftype
= newtype
;
1356 u32 interface_modes
;
1359 IWL_DEBUG_MAC80211(priv
, "enter\n");
1361 newtype
= ieee80211_iftype_p2p(newtype
, newp2p
);
1363 mutex_lock(&priv
->shrd
->mutex
);
1365 if (!ctx
->vif
|| !iwl_is_ready_rf(priv
->shrd
)) {
1367 * Huh? But wait ... this can maybe happen when
1368 * we're in the middle of a firmware restart!
1374 interface_modes
= ctx
->interface_modes
| ctx
->exclusive_interface_modes
;
1376 if (!(interface_modes
& BIT(newtype
))) {
1382 * Refuse a change that should be done by moving from the PAN
1383 * context to the BSS context instead, if the BSS context is
1384 * available and can support the new interface type.
1386 if (ctx
->ctxid
== IWL_RXON_CTX_PAN
&& !bss_ctx
->vif
&&
1387 (bss_ctx
->interface_modes
& BIT(newtype
) ||
1388 bss_ctx
->exclusive_interface_modes
& BIT(newtype
))) {
1389 BUILD_BUG_ON(NUM_IWL_RXON_CTX
!= 2);
1394 if (ctx
->exclusive_interface_modes
& BIT(newtype
)) {
1395 for_each_context(priv
, tmp
) {
1403 * The current mode switch would be exclusive, but
1404 * another context is active ... refuse the switch.
1412 iwl_teardown_interface(priv
, vif
, true);
1413 vif
->type
= newviftype
;
1415 err
= iwl_setup_interface(priv
, ctx
);
1418 * We've switched internally, but submitting to the
1419 * device may have failed for some reason. Mask this
1420 * error, because otherwise mac80211 will not switch
1421 * (and set the interface type back) and we'll be
1422 * out of sync with it.
1427 mutex_unlock(&priv
->shrd
->mutex
);
1428 IWL_DEBUG_MAC80211(priv
, "leave\n");
1433 static int iwlagn_mac_hw_scan(struct ieee80211_hw
*hw
,
1434 struct ieee80211_vif
*vif
,
1435 struct cfg80211_scan_request
*req
)
1437 struct iwl_priv
*priv
= hw
->priv
;
1440 IWL_DEBUG_MAC80211(priv
, "enter\n");
1442 if (req
->n_channels
== 0)
1445 mutex_lock(&priv
->shrd
->mutex
);
1448 * If an internal scan is in progress, just set
1449 * up the scan_request as per above.
1451 if (priv
->scan_type
!= IWL_SCAN_NORMAL
) {
1452 IWL_DEBUG_SCAN(priv
,
1453 "SCAN request during internal scan - defer\n");
1454 priv
->scan_request
= req
;
1455 priv
->scan_vif
= vif
;
1458 priv
->scan_request
= req
;
1459 priv
->scan_vif
= vif
;
1461 * mac80211 will only ask for one band at a time
1462 * so using channels[0] here is ok
1464 ret
= iwl_scan_initiate(priv
, vif
, IWL_SCAN_NORMAL
,
1465 req
->channels
[0]->band
);
1467 priv
->scan_request
= NULL
;
1468 priv
->scan_vif
= NULL
;
1472 IWL_DEBUG_MAC80211(priv
, "leave\n");
1474 mutex_unlock(&priv
->shrd
->mutex
);
1479 static int iwlagn_mac_sta_remove(struct ieee80211_hw
*hw
,
1480 struct ieee80211_vif
*vif
,
1481 struct ieee80211_sta
*sta
)
1483 struct iwl_priv
*priv
= hw
->priv
;
1484 struct iwl_station_priv
*sta_priv
= (void *)sta
->drv_priv
;
1487 IWL_DEBUG_MAC80211(priv
, "enter: received request to remove "
1488 "station %pM\n", sta
->addr
);
1489 mutex_lock(&priv
->shrd
->mutex
);
1490 IWL_DEBUG_INFO(priv
, "proceeding to remove station %pM\n",
1492 ret
= iwl_remove_station(priv
, sta_priv
->sta_id
, sta
->addr
);
1494 IWL_DEBUG_QUIET_RFKILL(priv
, "Error removing station %pM\n",
1496 mutex_unlock(&priv
->shrd
->mutex
);
1497 IWL_DEBUG_MAC80211(priv
, "leave\n");
1502 static void iwl_sta_modify_ps_wake(struct iwl_priv
*priv
, int sta_id
)
1504 unsigned long flags
;
1506 spin_lock_irqsave(&priv
->shrd
->sta_lock
, flags
);
1507 priv
->stations
[sta_id
].sta
.station_flags
&= ~STA_FLG_PWR_SAVE_MSK
;
1508 priv
->stations
[sta_id
].sta
.station_flags_msk
= STA_FLG_PWR_SAVE_MSK
;
1509 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= 0;
1510 priv
->stations
[sta_id
].sta
.sleep_tx_count
= 0;
1511 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
1512 iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
1513 spin_unlock_irqrestore(&priv
->shrd
->sta_lock
, flags
);
1517 static void iwlagn_mac_sta_notify(struct ieee80211_hw
*hw
,
1518 struct ieee80211_vif
*vif
,
1519 enum sta_notify_cmd cmd
,
1520 struct ieee80211_sta
*sta
)
1522 struct iwl_priv
*priv
= hw
->priv
;
1523 struct iwl_station_priv
*sta_priv
= (void *)sta
->drv_priv
;
1526 IWL_DEBUG_MAC80211(priv
, "enter\n");
1529 case STA_NOTIFY_SLEEP
:
1530 WARN_ON(!sta_priv
->client
);
1531 sta_priv
->asleep
= true;
1532 if (atomic_read(&sta_priv
->pending_frames
) > 0)
1533 ieee80211_sta_block_awake(hw
, sta
, true);
1535 case STA_NOTIFY_AWAKE
:
1536 WARN_ON(!sta_priv
->client
);
1537 if (!sta_priv
->asleep
)
1539 sta_priv
->asleep
= false;
1540 sta_id
= iwl_sta_id(sta
);
1541 if (sta_id
!= IWL_INVALID_STATION
)
1542 iwl_sta_modify_ps_wake(priv
, sta_id
);
1547 IWL_DEBUG_MAC80211(priv
, "leave\n");
1550 struct ieee80211_ops iwlagn_hw_ops
= {
1551 .tx
= iwlagn_mac_tx
,
1552 .start
= iwlagn_mac_start
,
1553 .stop
= iwlagn_mac_stop
,
1554 #ifdef CONFIG_PM_SLEEP
1555 .suspend
= iwlagn_mac_suspend
,
1556 .resume
= iwlagn_mac_resume
,
1558 .add_interface
= iwlagn_mac_add_interface
,
1559 .remove_interface
= iwlagn_mac_remove_interface
,
1560 .change_interface
= iwlagn_mac_change_interface
,
1561 .config
= iwlagn_mac_config
,
1562 .configure_filter
= iwlagn_configure_filter
,
1563 .set_key
= iwlagn_mac_set_key
,
1564 .update_tkip_key
= iwlagn_mac_update_tkip_key
,
1565 .set_rekey_data
= iwlagn_mac_set_rekey_data
,
1566 .conf_tx
= iwlagn_mac_conf_tx
,
1567 .bss_info_changed
= iwlagn_bss_info_changed
,
1568 .ampdu_action
= iwlagn_mac_ampdu_action
,
1569 .hw_scan
= iwlagn_mac_hw_scan
,
1570 .sta_notify
= iwlagn_mac_sta_notify
,
1571 .sta_add
= iwlagn_mac_sta_add
,
1572 .sta_remove
= iwlagn_mac_sta_remove
,
1573 .channel_switch
= iwlagn_mac_channel_switch
,
1574 .flush
= iwlagn_mac_flush
,
1575 .tx_last_beacon
= iwlagn_mac_tx_last_beacon
,
1576 .remain_on_channel
= iwlagn_mac_remain_on_channel
,
1577 .cancel_remain_on_channel
= iwlagn_mac_cancel_remain_on_channel
,
1578 .rssi_callback
= iwlagn_mac_rssi_callback
,
1579 CFG80211_TESTMODE_CMD(iwlagn_mac_testmode_cmd
)
1580 CFG80211_TESTMODE_DUMP(iwlagn_mac_testmode_dump
)
1581 .tx_sync
= iwlagn_mac_tx_sync
,
1582 .finish_tx_sync
= iwlagn_mac_finish_tx_sync
,
1583 .set_tim
= iwlagn_mac_set_tim
,
1586 /* This function both allocates and initializes hw and priv. */
1587 struct ieee80211_hw
*iwl_alloc_all(void)
1589 struct iwl_priv
*priv
;
1590 /* mac80211 allocates memory for this device instance, including
1591 * space for this driver's private structure */
1592 struct ieee80211_hw
*hw
;
1594 hw
= ieee80211_alloc_hw(sizeof(struct iwl_priv
), &iwlagn_hw_ops
);