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/etherdevice.h>
39 #include <linux/if_arp.h>
41 #include <net/mac80211.h>
43 #include <asm/div64.h>
45 #include "iwl-eeprom.h"
48 #include "iwl-agn-calib.h"
50 #include "iwl-trans.h"
51 #include "iwl-op-mode.h"
52 #include "iwl-modparams.h"
54 /*****************************************************************************
56 * mac80211 entry point functions
58 *****************************************************************************/
60 static const struct ieee80211_iface_limit iwlagn_sta_ap_limits
[] = {
63 .types
= BIT(NL80211_IFTYPE_STATION
),
67 .types
= BIT(NL80211_IFTYPE_AP
),
71 static const struct ieee80211_iface_limit iwlagn_2sta_limits
[] = {
74 .types
= BIT(NL80211_IFTYPE_STATION
),
78 static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits
[] = {
81 .types
= BIT(NL80211_IFTYPE_STATION
),
85 .types
= BIT(NL80211_IFTYPE_P2P_GO
) |
86 BIT(NL80211_IFTYPE_AP
),
90 static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits
[] = {
93 .types
= BIT(NL80211_IFTYPE_STATION
),
97 .types
= BIT(NL80211_IFTYPE_P2P_CLIENT
),
101 static const struct ieee80211_iface_combination
102 iwlagn_iface_combinations_dualmode
[] = {
103 { .num_different_channels
= 1,
105 .beacon_int_infra_match
= true,
106 .limits
= iwlagn_sta_ap_limits
,
107 .n_limits
= ARRAY_SIZE(iwlagn_sta_ap_limits
),
109 { .num_different_channels
= 1,
111 .limits
= iwlagn_2sta_limits
,
112 .n_limits
= ARRAY_SIZE(iwlagn_2sta_limits
),
116 static const struct ieee80211_iface_combination
117 iwlagn_iface_combinations_p2p
[] = {
118 { .num_different_channels
= 1,
120 .beacon_int_infra_match
= true,
121 .limits
= iwlagn_p2p_sta_go_limits
,
122 .n_limits
= ARRAY_SIZE(iwlagn_p2p_sta_go_limits
),
124 { .num_different_channels
= 1,
126 .limits
= iwlagn_p2p_2sta_limits
,
127 .n_limits
= ARRAY_SIZE(iwlagn_p2p_2sta_limits
),
132 * Not a mac80211 entry point function, but it fits in with all the
133 * other mac80211 functions grouped here.
135 int iwlagn_mac_setup_register(struct iwl_priv
*priv
,
136 const struct iwl_ucode_capabilities
*capa
)
139 struct ieee80211_hw
*hw
= priv
->hw
;
140 struct iwl_rxon_context
*ctx
;
142 hw
->rate_control_algorithm
= "iwl-agn-rs";
144 /* Tell mac80211 our characteristics */
145 hw
->flags
= IEEE80211_HW_SIGNAL_DBM
|
146 IEEE80211_HW_AMPDU_AGGREGATION
|
147 IEEE80211_HW_NEED_DTIM_PERIOD
|
148 IEEE80211_HW_SPECTRUM_MGMT
|
149 IEEE80211_HW_REPORTS_TX_ACK_STATUS
|
150 IEEE80211_HW_QUEUE_CONTROL
|
151 IEEE80211_HW_SUPPORTS_PS
|
152 IEEE80211_HW_SUPPORTS_DYNAMIC_PS
|
153 IEEE80211_HW_WANT_MONITOR_VIF
|
154 IEEE80211_HW_SCAN_WHILE_IDLE
;
156 hw
->offchannel_tx_hw_queue
= IWL_AUX_QUEUE
;
159 * Including the following line will crash some AP's. This
160 * workaround removes the stimulus which causes the crash until
161 * the AP software can be fixed.
162 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
165 if (priv
->hw_params
.sku
& EEPROM_SKU_CAP_11N_ENABLE
)
166 hw
->flags
|= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS
|
167 IEEE80211_HW_SUPPORTS_STATIC_SMPS
;
169 #ifndef CONFIG_IWLWIFI_EXPERIMENTAL_MFP
170 /* enable 11w if the uCode advertise */
171 if (capa
->flags
& IWL_UCODE_TLV_FLAGS_MFP
)
172 #endif /* !CONFIG_IWLWIFI_EXPERIMENTAL_MFP */
173 hw
->flags
|= IEEE80211_HW_MFP_CAPABLE
;
175 hw
->sta_data_size
= sizeof(struct iwl_station_priv
);
176 hw
->vif_data_size
= sizeof(struct iwl_vif_priv
);
178 for_each_context(priv
, ctx
) {
179 hw
->wiphy
->interface_modes
|= ctx
->interface_modes
;
180 hw
->wiphy
->interface_modes
|= ctx
->exclusive_interface_modes
;
183 BUILD_BUG_ON(NUM_IWL_RXON_CTX
!= 2);
185 if (hw
->wiphy
->interface_modes
& BIT(NL80211_IFTYPE_P2P_CLIENT
)) {
186 hw
->wiphy
->iface_combinations
= iwlagn_iface_combinations_p2p
;
187 hw
->wiphy
->n_iface_combinations
=
188 ARRAY_SIZE(iwlagn_iface_combinations_p2p
);
189 } else if (hw
->wiphy
->interface_modes
& BIT(NL80211_IFTYPE_AP
)) {
190 hw
->wiphy
->iface_combinations
=
191 iwlagn_iface_combinations_dualmode
;
192 hw
->wiphy
->n_iface_combinations
=
193 ARRAY_SIZE(iwlagn_iface_combinations_dualmode
);
196 hw
->wiphy
->max_remain_on_channel_duration
= 1000;
198 hw
->wiphy
->flags
|= WIPHY_FLAG_CUSTOM_REGULATORY
|
199 WIPHY_FLAG_DISABLE_BEACON_HINTS
|
202 if (priv
->fw
->img
[IWL_UCODE_WOWLAN
].sec
[0].len
&&
203 priv
->trans
->ops
->wowlan_suspend
&&
204 device_can_wakeup(priv
->trans
->dev
)) {
205 hw
->wiphy
->wowlan
.flags
= WIPHY_WOWLAN_MAGIC_PKT
|
206 WIPHY_WOWLAN_DISCONNECT
|
207 WIPHY_WOWLAN_EAP_IDENTITY_REQ
|
208 WIPHY_WOWLAN_RFKILL_RELEASE
;
209 if (!iwlwifi_mod_params
.sw_crypto
)
210 hw
->wiphy
->wowlan
.flags
|=
211 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY
|
212 WIPHY_WOWLAN_GTK_REKEY_FAILURE
;
214 hw
->wiphy
->wowlan
.n_patterns
= IWLAGN_WOWLAN_MAX_PATTERNS
;
215 hw
->wiphy
->wowlan
.pattern_min_len
=
216 IWLAGN_WOWLAN_MIN_PATTERN_LEN
;
217 hw
->wiphy
->wowlan
.pattern_max_len
=
218 IWLAGN_WOWLAN_MAX_PATTERN_LEN
;
221 if (iwlwifi_mod_params
.power_save
)
222 hw
->wiphy
->flags
|= WIPHY_FLAG_PS_ON_BY_DEFAULT
;
224 hw
->wiphy
->flags
&= ~WIPHY_FLAG_PS_ON_BY_DEFAULT
;
226 hw
->wiphy
->max_scan_ssids
= PROBE_OPTION_MAX
;
227 /* we create the 802.11 header and a max-length SSID element */
228 hw
->wiphy
->max_scan_ie_len
= capa
->max_probe_length
- 24 - 34;
231 * We don't use all queues: 4 and 9 are unused and any
232 * aggregation queue gets mapped down to the AC queue.
234 hw
->queues
= IWLAGN_FIRST_AMPDU_QUEUE
;
236 hw
->max_listen_interval
= IWL_CONN_MAX_LISTEN_INTERVAL
;
238 if (priv
->bands
[IEEE80211_BAND_2GHZ
].n_channels
)
239 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] =
240 &priv
->bands
[IEEE80211_BAND_2GHZ
];
241 if (priv
->bands
[IEEE80211_BAND_5GHZ
].n_channels
)
242 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] =
243 &priv
->bands
[IEEE80211_BAND_5GHZ
];
245 hw
->wiphy
->hw_version
= priv
->trans
->hw_id
;
249 ret
= ieee80211_register_hw(priv
->hw
);
251 IWL_ERR(priv
, "Failed to register hw (error %d)\n", ret
);
254 priv
->mac80211_registered
= 1;
259 void iwlagn_mac_unregister(struct iwl_priv
*priv
)
261 if (!priv
->mac80211_registered
)
264 ieee80211_unregister_hw(priv
->hw
);
265 priv
->mac80211_registered
= 0;
268 static int __iwl_up(struct iwl_priv
*priv
)
270 struct iwl_rxon_context
*ctx
;
273 lockdep_assert_held(&priv
->mutex
);
275 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
276 IWL_WARN(priv
, "Exit pending; will not bring the NIC up\n");
280 for_each_context(priv
, ctx
) {
281 ret
= iwlagn_alloc_bcast_station(priv
, ctx
);
283 iwl_dealloc_bcast_stations(priv
);
288 ret
= iwl_run_init_ucode(priv
);
290 IWL_ERR(priv
, "Failed to run INIT ucode: %d\n", ret
);
294 ret
= iwl_load_ucode_wait_alive(priv
, IWL_UCODE_REGULAR
);
296 IWL_ERR(priv
, "Failed to start RT ucode: %d\n", ret
);
300 ret
= iwl_alive_start(priv
);
306 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
308 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
310 IWL_ERR(priv
, "Unable to initialize device.\n");
314 static int iwlagn_mac_start(struct ieee80211_hw
*hw
)
316 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
319 IWL_DEBUG_MAC80211(priv
, "enter\n");
321 /* we should be verifying the device is ready to be opened */
322 mutex_lock(&priv
->mutex
);
323 ret
= __iwl_up(priv
);
324 mutex_unlock(&priv
->mutex
);
328 IWL_DEBUG_INFO(priv
, "Start UP work done.\n");
330 /* Now we should be done, and the READY bit should be set. */
331 if (WARN_ON(!test_bit(STATUS_READY
, &priv
->status
)))
334 iwlagn_led_enable(priv
);
337 IWL_DEBUG_MAC80211(priv
, "leave\n");
341 void iwlagn_mac_stop(struct ieee80211_hw
*hw
)
343 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
345 IWL_DEBUG_MAC80211(priv
, "enter\n");
352 mutex_lock(&priv
->mutex
);
354 mutex_unlock(&priv
->mutex
);
356 iwl_cancel_deferred_work(priv
);
358 flush_workqueue(priv
->workqueue
);
360 /* User space software may expect getting rfkill changes
361 * even if interface is down, trans->down will leave the RF
362 * kill interrupt enabled
364 iwl_trans_stop_hw(priv
->trans
, false);
366 IWL_DEBUG_MAC80211(priv
, "leave\n");
369 void iwlagn_mac_set_rekey_data(struct ieee80211_hw
*hw
,
370 struct ieee80211_vif
*vif
,
371 struct cfg80211_gtk_rekey_data
*data
)
373 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
375 if (iwlwifi_mod_params
.sw_crypto
)
378 IWL_DEBUG_MAC80211(priv
, "enter\n");
379 mutex_lock(&priv
->mutex
);
381 if (priv
->contexts
[IWL_RXON_CTX_BSS
].vif
!= vif
)
384 memcpy(priv
->kek
, data
->kek
, NL80211_KEK_LEN
);
385 memcpy(priv
->kck
, data
->kck
, NL80211_KCK_LEN
);
387 cpu_to_le64(be64_to_cpup((__be64
*)&data
->replay_ctr
));
388 priv
->have_rekey_data
= true;
391 mutex_unlock(&priv
->mutex
);
392 IWL_DEBUG_MAC80211(priv
, "leave\n");
395 #ifdef CONFIG_PM_SLEEP
397 int iwlagn_mac_suspend(struct ieee80211_hw
*hw
, struct cfg80211_wowlan
*wowlan
)
399 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
400 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
403 if (WARN_ON(!wowlan
))
406 IWL_DEBUG_MAC80211(priv
, "enter\n");
407 mutex_lock(&priv
->mutex
);
409 /* Don't attempt WoWLAN when not associated, tear down instead. */
410 if (!ctx
->vif
|| ctx
->vif
->type
!= NL80211_IFTYPE_STATION
||
411 !iwl_is_associated_ctx(ctx
)) {
416 ret
= iwlagn_suspend(priv
, wowlan
);
420 device_set_wakeup_enable(priv
->trans
->dev
, true);
422 iwl_trans_wowlan_suspend(priv
->trans
);
427 priv
->wowlan
= false;
428 iwlagn_prepare_restart(priv
);
429 ieee80211_restart_hw(priv
->hw
);
431 mutex_unlock(&priv
->mutex
);
432 IWL_DEBUG_MAC80211(priv
, "leave\n");
437 static int iwlagn_mac_resume(struct ieee80211_hw
*hw
)
439 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
440 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
441 struct ieee80211_vif
*vif
;
443 u32 base
, status
= 0xffffffff;
446 IWL_DEBUG_MAC80211(priv
, "enter\n");
447 mutex_lock(&priv
->mutex
);
449 iwl_write32(priv
->trans
, CSR_UCODE_DRV_GP1_CLR
,
450 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE
);
452 base
= priv
->device_pointers
.error_event_table
;
453 if (iwlagn_hw_valid_rtc_data_addr(base
)) {
454 spin_lock_irqsave(&priv
->trans
->reg_lock
, flags
);
455 ret
= iwl_grab_nic_access_silent(priv
->trans
);
456 if (likely(ret
== 0)) {
457 iwl_write32(priv
->trans
, HBUS_TARG_MEM_RADDR
, base
);
458 status
= iwl_read32(priv
->trans
, HBUS_TARG_MEM_RDAT
);
459 iwl_release_nic_access(priv
->trans
);
461 spin_unlock_irqrestore(&priv
->trans
->reg_lock
, flags
);
463 #ifdef CONFIG_IWLWIFI_DEBUGFS
465 const struct fw_img
*img
;
467 img
= &(priv
->fw
->img
[IWL_UCODE_WOWLAN
]);
468 if (!priv
->wowlan_sram
) {
470 kzalloc(img
->sec
[IWL_UCODE_SECTION_DATA
].len
,
474 if (priv
->wowlan_sram
)
475 _iwl_read_targ_mem_words(
476 priv
->trans
, 0x800000,
478 img
->sec
[IWL_UCODE_SECTION_DATA
].len
/ 4);
483 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
486 priv
->wowlan
= false;
488 device_set_wakeup_enable(priv
->trans
->dev
, false);
490 iwlagn_prepare_restart(priv
);
492 memset((void *)&ctx
->active
, 0, sizeof(ctx
->active
));
493 iwl_connection_init_rx_config(priv
, ctx
);
494 iwlagn_set_rxon_chain(priv
, ctx
);
496 mutex_unlock(&priv
->mutex
);
497 IWL_DEBUG_MAC80211(priv
, "leave\n");
499 ieee80211_resume_disconnect(vif
);
506 void iwlagn_mac_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
508 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
510 IWL_DEBUG_TX(priv
, "dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
511 ieee80211_get_tx_rate(hw
, IEEE80211_SKB_CB(skb
))->bitrate
);
513 if (iwlagn_tx_skb(priv
, skb
))
514 dev_kfree_skb_any(skb
);
517 void iwlagn_mac_update_tkip_key(struct ieee80211_hw
*hw
,
518 struct ieee80211_vif
*vif
,
519 struct ieee80211_key_conf
*keyconf
,
520 struct ieee80211_sta
*sta
,
521 u32 iv32
, u16
*phase1key
)
523 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
525 iwl_update_tkip_key(priv
, vif
, keyconf
, sta
, iv32
, phase1key
);
528 int iwlagn_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
529 struct ieee80211_vif
*vif
,
530 struct ieee80211_sta
*sta
,
531 struct ieee80211_key_conf
*key
)
533 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
534 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
535 struct iwl_rxon_context
*ctx
= vif_priv
->ctx
;
537 bool is_default_wep_key
= false;
539 IWL_DEBUG_MAC80211(priv
, "enter\n");
541 if (iwlwifi_mod_params
.sw_crypto
) {
542 IWL_DEBUG_MAC80211(priv
, "leave - hwcrypto disabled\n");
546 switch (key
->cipher
) {
547 case WLAN_CIPHER_SUITE_TKIP
:
548 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_MMIC
;
550 case WLAN_CIPHER_SUITE_CCMP
:
551 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
558 * We could program these keys into the hardware as well, but we
559 * don't expect much multicast traffic in IBSS and having keys
560 * for more stations is probably more useful.
562 * Mark key TX-only and return 0.
564 if (vif
->type
== NL80211_IFTYPE_ADHOC
&&
565 !(key
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
)) {
566 key
->hw_key_idx
= WEP_INVALID_OFFSET
;
570 /* If they key was TX-only, accept deletion */
571 if (cmd
== DISABLE_KEY
&& key
->hw_key_idx
== WEP_INVALID_OFFSET
)
574 mutex_lock(&priv
->mutex
);
575 iwl_scan_cancel_timeout(priv
, 100);
577 BUILD_BUG_ON(WEP_INVALID_OFFSET
== IWLAGN_HW_KEY_DEFAULT
);
580 * If we are getting WEP group key and we didn't receive any key mapping
581 * so far, we are in legacy wep mode (group key only), otherwise we are
583 * In legacy wep mode, we use another host command to the uCode.
585 if ((key
->cipher
== WLAN_CIPHER_SUITE_WEP40
||
586 key
->cipher
== WLAN_CIPHER_SUITE_WEP104
) && !sta
) {
588 is_default_wep_key
= !ctx
->key_mapping_keys
;
591 key
->hw_key_idx
== IWLAGN_HW_KEY_DEFAULT
;
597 if (is_default_wep_key
) {
598 ret
= iwl_set_default_wep_key(priv
, vif_priv
->ctx
, key
);
601 ret
= iwl_set_dynamic_key(priv
, vif_priv
->ctx
, key
, sta
);
604 * can't add key for RX, but we don't need it
605 * in the device for TX so still return 0
608 key
->hw_key_idx
= WEP_INVALID_OFFSET
;
611 IWL_DEBUG_MAC80211(priv
, "enable hwcrypto key\n");
614 if (is_default_wep_key
)
615 ret
= iwl_remove_default_wep_key(priv
, ctx
, key
);
617 ret
= iwl_remove_dynamic_key(priv
, ctx
, key
, sta
);
619 IWL_DEBUG_MAC80211(priv
, "disable hwcrypto key\n");
625 mutex_unlock(&priv
->mutex
);
626 IWL_DEBUG_MAC80211(priv
, "leave\n");
631 int iwlagn_mac_ampdu_action(struct ieee80211_hw
*hw
,
632 struct ieee80211_vif
*vif
,
633 enum ieee80211_ampdu_mlme_action action
,
634 struct ieee80211_sta
*sta
, u16 tid
, u16
*ssn
,
637 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
639 struct iwl_station_priv
*sta_priv
= (void *) sta
->drv_priv
;
641 IWL_DEBUG_HT(priv
, "A-MPDU action on addr %pM tid %d\n",
644 if (!(priv
->hw_params
.sku
& EEPROM_SKU_CAP_11N_ENABLE
))
647 IWL_DEBUG_MAC80211(priv
, "enter\n");
648 mutex_lock(&priv
->mutex
);
651 case IEEE80211_AMPDU_RX_START
:
652 if (iwlwifi_mod_params
.disable_11n
& IWL_DISABLE_HT_RXAGG
)
654 IWL_DEBUG_HT(priv
, "start Rx\n");
655 ret
= iwl_sta_rx_agg_start(priv
, sta
, tid
, *ssn
);
657 case IEEE80211_AMPDU_RX_STOP
:
658 IWL_DEBUG_HT(priv
, "stop Rx\n");
659 ret
= iwl_sta_rx_agg_stop(priv
, sta
, tid
);
661 case IEEE80211_AMPDU_TX_START
:
662 if (!priv
->trans
->ops
->tx_agg_setup
)
664 if (iwlwifi_mod_params
.disable_11n
& IWL_DISABLE_HT_TXAGG
)
666 IWL_DEBUG_HT(priv
, "start Tx\n");
667 ret
= iwlagn_tx_agg_start(priv
, vif
, sta
, tid
, ssn
);
669 case IEEE80211_AMPDU_TX_STOP
:
670 IWL_DEBUG_HT(priv
, "stop Tx\n");
671 ret
= iwlagn_tx_agg_stop(priv
, vif
, sta
, tid
);
672 if ((ret
== 0) && (priv
->agg_tids_count
> 0)) {
673 priv
->agg_tids_count
--;
674 IWL_DEBUG_HT(priv
, "priv->agg_tids_count = %u\n",
675 priv
->agg_tids_count
);
677 if (!priv
->agg_tids_count
&&
678 priv
->hw_params
.use_rts_for_aggregation
) {
680 * switch off RTS/CTS if it was previously enabled
682 sta_priv
->lq_sta
.lq
.general_params
.flags
&=
683 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK
;
684 iwl_send_lq_cmd(priv
, iwl_rxon_ctx_from_vif(vif
),
685 &sta_priv
->lq_sta
.lq
, CMD_ASYNC
, false);
688 case IEEE80211_AMPDU_TX_OPERATIONAL
:
689 ret
= iwlagn_tx_agg_oper(priv
, vif
, sta
, tid
, buf_size
);
692 mutex_unlock(&priv
->mutex
);
693 IWL_DEBUG_MAC80211(priv
, "leave\n");
697 static int iwlagn_mac_sta_add(struct ieee80211_hw
*hw
,
698 struct ieee80211_vif
*vif
,
699 struct ieee80211_sta
*sta
)
701 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
702 struct iwl_station_priv
*sta_priv
= (void *)sta
->drv_priv
;
703 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
704 bool is_ap
= vif
->type
== NL80211_IFTYPE_STATION
;
708 IWL_DEBUG_INFO(priv
, "proceeding to add station %pM\n",
710 sta_priv
->sta_id
= IWL_INVALID_STATION
;
712 atomic_set(&sta_priv
->pending_frames
, 0);
713 if (vif
->type
== NL80211_IFTYPE_AP
)
714 sta_priv
->client
= true;
716 ret
= iwl_add_station_common(priv
, vif_priv
->ctx
, sta
->addr
,
717 is_ap
, sta
, &sta_id
);
719 IWL_ERR(priv
, "Unable to add station %pM (%d)\n",
721 /* Should we return success if return code is EEXIST ? */
725 sta_priv
->sta_id
= sta_id
;
730 static int iwlagn_mac_sta_remove(struct ieee80211_hw
*hw
,
731 struct ieee80211_vif
*vif
,
732 struct ieee80211_sta
*sta
)
734 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
735 struct iwl_station_priv
*sta_priv
= (void *)sta
->drv_priv
;
738 IWL_DEBUG_INFO(priv
, "proceeding to remove station %pM\n", sta
->addr
);
740 if (vif
->type
== NL80211_IFTYPE_STATION
) {
742 * Station will be removed from device when the RXON
743 * is set to unassociated -- just deactivate it here
744 * to avoid re-programming it.
747 iwl_deactivate_station(priv
, sta_priv
->sta_id
, sta
->addr
);
749 ret
= iwl_remove_station(priv
, sta_priv
->sta_id
, sta
->addr
);
751 IWL_DEBUG_QUIET_RFKILL(priv
,
752 "Error removing station %pM\n", sta
->addr
);
757 int iwlagn_mac_sta_state(struct ieee80211_hw
*hw
,
758 struct ieee80211_vif
*vif
,
759 struct ieee80211_sta
*sta
,
760 enum ieee80211_sta_state old_state
,
761 enum ieee80211_sta_state new_state
)
763 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
764 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
766 NONE
, ADD
, REMOVE
, HT_RATE_INIT
, ADD_RATE_INIT
,
770 IWL_DEBUG_MAC80211(priv
, "station %pM state change %d->%d\n",
771 sta
->addr
, old_state
, new_state
);
773 mutex_lock(&priv
->mutex
);
774 if (vif
->type
== NL80211_IFTYPE_STATION
) {
775 if (old_state
== IEEE80211_STA_NOTEXIST
&&
776 new_state
== IEEE80211_STA_NONE
)
778 else if (old_state
== IEEE80211_STA_NONE
&&
779 new_state
== IEEE80211_STA_NOTEXIST
)
781 else if (old_state
== IEEE80211_STA_AUTH
&&
782 new_state
== IEEE80211_STA_ASSOC
)
785 if (old_state
== IEEE80211_STA_AUTH
&&
786 new_state
== IEEE80211_STA_ASSOC
)
788 else if (old_state
== IEEE80211_STA_ASSOC
&&
789 new_state
== IEEE80211_STA_AUTH
)
795 ret
= iwlagn_mac_sta_add(hw
, vif
, sta
);
798 ret
= iwlagn_mac_sta_remove(hw
, vif
, sta
);
801 ret
= iwlagn_mac_sta_add(hw
, vif
, sta
);
804 /* Initialize rate scaling */
806 "Initializing rate scaling for station %pM\n",
808 iwl_rs_rate_init(priv
, sta
, iwl_sta_id(sta
));
812 /* Initialize rate scaling */
813 ret
= iwl_sta_update_ht(priv
, vif_priv
->ctx
, sta
);
817 "Initializing rate scaling for station %pM\n",
819 iwl_rs_rate_init(priv
, sta
, iwl_sta_id(sta
));
828 * mac80211 might WARN if we fail, but due the way we
829 * (badly) handle hard rfkill, we might fail here
831 if (iwl_is_rfkill(priv
))
834 mutex_unlock(&priv
->mutex
);
835 IWL_DEBUG_MAC80211(priv
, "leave\n");
840 void iwlagn_mac_channel_switch(struct ieee80211_hw
*hw
,
841 struct ieee80211_channel_switch
*ch_switch
)
843 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
844 const struct iwl_channel_info
*ch_info
;
845 struct ieee80211_conf
*conf
= &hw
->conf
;
846 struct ieee80211_channel
*channel
= ch_switch
->channel
;
847 struct iwl_ht_config
*ht_conf
= &priv
->current_ht_config
;
850 * When we add support for multiple interfaces, we need to
851 * revisit this. The channel switch command in the device
852 * only affects the BSS context, but what does that really
853 * mean? And what if we get a CSA on the second interface?
854 * This needs a lot of work.
856 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
859 IWL_DEBUG_MAC80211(priv
, "enter\n");
861 mutex_lock(&priv
->mutex
);
863 if (iwl_is_rfkill(priv
))
866 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
) ||
867 test_bit(STATUS_SCANNING
, &priv
->status
) ||
868 test_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->status
))
871 if (!iwl_is_associated_ctx(ctx
))
874 if (!priv
->lib
->set_channel_switch
)
877 ch
= channel
->hw_value
;
878 if (le16_to_cpu(ctx
->active
.channel
) == ch
)
881 ch_info
= iwl_get_channel_info(priv
, channel
->band
, ch
);
882 if (!is_channel_valid(ch_info
)) {
883 IWL_DEBUG_MAC80211(priv
, "invalid channel\n");
887 priv
->current_ht_config
.smps
= conf
->smps_mode
;
889 /* Configure HT40 channels */
890 ctx
->ht
.enabled
= conf_is_ht(conf
);
892 iwlagn_config_ht40(conf
, ctx
);
894 ctx
->ht
.is_40mhz
= false;
896 if ((le16_to_cpu(ctx
->staging
.channel
) != ch
))
897 ctx
->staging
.flags
= 0;
899 iwl_set_rxon_channel(priv
, channel
, ctx
);
900 iwl_set_rxon_ht(priv
, ht_conf
);
901 iwl_set_flags_for_band(priv
, ctx
, channel
->band
, ctx
->vif
);
904 * at this point, staging_rxon has the
905 * configuration for channel switch
907 set_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->status
);
908 priv
->switch_channel
= cpu_to_le16(ch
);
909 if (priv
->lib
->set_channel_switch(priv
, ch_switch
)) {
910 clear_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->status
);
911 priv
->switch_channel
= 0;
912 ieee80211_chswitch_done(ctx
->vif
, false);
916 mutex_unlock(&priv
->mutex
);
917 IWL_DEBUG_MAC80211(priv
, "leave\n");
920 void iwl_chswitch_done(struct iwl_priv
*priv
, bool is_success
)
924 * See iwlagn_mac_channel_switch.
926 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
928 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
931 if (test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->status
))
932 ieee80211_chswitch_done(ctx
->vif
, is_success
);
935 void iwlagn_configure_filter(struct ieee80211_hw
*hw
,
936 unsigned int changed_flags
,
937 unsigned int *total_flags
,
940 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
941 __le32 filter_or
= 0, filter_nand
= 0;
942 struct iwl_rxon_context
*ctx
;
944 #define CHK(test, flag) do { \
945 if (*total_flags & (test)) \
946 filter_or |= (flag); \
948 filter_nand |= (flag); \
951 IWL_DEBUG_MAC80211(priv
, "Enter: changed: 0x%x, total: 0x%x\n",
952 changed_flags
, *total_flags
);
954 CHK(FIF_OTHER_BSS
| FIF_PROMISC_IN_BSS
, RXON_FILTER_PROMISC_MSK
);
955 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
956 CHK(FIF_CONTROL
, RXON_FILTER_CTL2HOST_MSK
| RXON_FILTER_PROMISC_MSK
);
957 CHK(FIF_BCN_PRBRESP_PROMISC
, RXON_FILTER_BCON_AWARE_MSK
);
961 mutex_lock(&priv
->mutex
);
963 for_each_context(priv
, ctx
) {
964 ctx
->staging
.filter_flags
&= ~filter_nand
;
965 ctx
->staging
.filter_flags
|= filter_or
;
968 * Not committing directly because hardware can perform a scan,
969 * but we'll eventually commit the filter flags change anyway.
973 mutex_unlock(&priv
->mutex
);
976 * Receiving all multicast frames is always enabled by the
977 * default flags setup in iwl_connection_init_rx_config()
978 * since we currently do not support programming multicast
979 * filters into the device.
981 *total_flags
&= FIF_OTHER_BSS
| FIF_ALLMULTI
| FIF_PROMISC_IN_BSS
|
982 FIF_BCN_PRBRESP_PROMISC
| FIF_CONTROL
;
985 void iwlagn_mac_flush(struct ieee80211_hw
*hw
, bool drop
)
987 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
989 mutex_lock(&priv
->mutex
);
990 IWL_DEBUG_MAC80211(priv
, "enter\n");
992 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
993 IWL_DEBUG_TX(priv
, "Aborting flush due to device shutdown\n");
996 if (iwl_is_rfkill(priv
)) {
997 IWL_DEBUG_TX(priv
, "Aborting flush due to RF Kill\n");
1002 * mac80211 will not push any more frames for transmit
1003 * until the flush is completed
1006 IWL_DEBUG_MAC80211(priv
, "send flush command\n");
1007 if (iwlagn_txfifo_flush(priv
, IWL_DROP_ALL
)) {
1008 IWL_ERR(priv
, "flush request fail\n");
1012 IWL_DEBUG_MAC80211(priv
, "wait transmit/flush all frames\n");
1013 iwl_trans_wait_tx_queue_empty(priv
->trans
);
1015 mutex_unlock(&priv
->mutex
);
1016 IWL_DEBUG_MAC80211(priv
, "leave\n");
1019 static int iwlagn_mac_remain_on_channel(struct ieee80211_hw
*hw
,
1020 struct ieee80211_channel
*channel
,
1021 enum nl80211_channel_type channel_type
,
1024 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1025 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_PAN
];
1028 if (!(priv
->valid_contexts
& BIT(IWL_RXON_CTX_PAN
)))
1031 if (!(ctx
->interface_modes
& BIT(NL80211_IFTYPE_P2P_CLIENT
)))
1034 IWL_DEBUG_MAC80211(priv
, "enter\n");
1035 mutex_lock(&priv
->mutex
);
1037 if (test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
1042 priv
->hw_roc_channel
= channel
;
1043 priv
->hw_roc_chantype
= channel_type
;
1044 /* convert from ms to TU */
1045 priv
->hw_roc_duration
= DIV_ROUND_UP(1000 * duration
, 1024);
1046 priv
->hw_roc_start_notified
= false;
1047 cancel_delayed_work(&priv
->hw_roc_disable_work
);
1049 if (!ctx
->is_active
) {
1050 static const struct iwl_qos_info default_qos_data
= {
1053 .cw_min
= cpu_to_le16(3),
1054 .cw_max
= cpu_to_le16(7),
1056 .edca_txop
= cpu_to_le16(1504),
1059 .cw_min
= cpu_to_le16(7),
1060 .cw_max
= cpu_to_le16(15),
1062 .edca_txop
= cpu_to_le16(3008),
1065 .cw_min
= cpu_to_le16(15),
1066 .cw_max
= cpu_to_le16(1023),
1070 .cw_min
= cpu_to_le16(15),
1071 .cw_max
= cpu_to_le16(1023),
1077 ctx
->is_active
= true;
1078 ctx
->qos_data
= default_qos_data
;
1079 ctx
->staging
.dev_type
= RXON_DEV_TYPE_P2P
;
1080 memcpy(ctx
->staging
.node_addr
,
1081 priv
->contexts
[IWL_RXON_CTX_BSS
].staging
.node_addr
,
1083 memcpy(ctx
->staging
.bssid_addr
,
1084 priv
->contexts
[IWL_RXON_CTX_BSS
].staging
.node_addr
,
1086 err
= iwlagn_commit_rxon(priv
, ctx
);
1089 ctx
->staging
.filter_flags
|= RXON_FILTER_ASSOC_MSK
|
1090 RXON_FILTER_PROMISC_MSK
|
1091 RXON_FILTER_CTL2HOST_MSK
;
1093 err
= iwlagn_commit_rxon(priv
, ctx
);
1095 iwlagn_disable_roc(priv
);
1098 priv
->hw_roc_setup
= true;
1101 err
= iwl_scan_initiate(priv
, ctx
->vif
, IWL_SCAN_ROC
, channel
->band
);
1103 iwlagn_disable_roc(priv
);
1106 mutex_unlock(&priv
->mutex
);
1107 IWL_DEBUG_MAC80211(priv
, "leave\n");
1112 int iwlagn_mac_cancel_remain_on_channel(struct ieee80211_hw
*hw
)
1114 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1116 if (!(priv
->valid_contexts
& BIT(IWL_RXON_CTX_PAN
)))
1119 IWL_DEBUG_MAC80211(priv
, "enter\n");
1120 mutex_lock(&priv
->mutex
);
1121 iwl_scan_cancel_timeout(priv
, priv
->hw_roc_duration
);
1122 iwlagn_disable_roc(priv
);
1123 mutex_unlock(&priv
->mutex
);
1124 IWL_DEBUG_MAC80211(priv
, "leave\n");
1129 void iwlagn_mac_rssi_callback(struct ieee80211_hw
*hw
,
1130 enum ieee80211_rssi_event rssi_event
)
1132 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1134 IWL_DEBUG_MAC80211(priv
, "enter\n");
1135 mutex_lock(&priv
->mutex
);
1137 if (priv
->cfg
->bt_params
&&
1138 priv
->cfg
->bt_params
->advanced_bt_coexist
) {
1139 if (rssi_event
== RSSI_EVENT_LOW
)
1140 priv
->bt_enable_pspoll
= true;
1141 else if (rssi_event
== RSSI_EVENT_HIGH
)
1142 priv
->bt_enable_pspoll
= false;
1144 iwlagn_send_advance_bt_config(priv
);
1146 IWL_DEBUG_MAC80211(priv
, "Advanced BT coex disabled,"
1147 "ignoring RSSI callback\n");
1150 mutex_unlock(&priv
->mutex
);
1151 IWL_DEBUG_MAC80211(priv
, "leave\n");
1154 int iwlagn_mac_set_tim(struct ieee80211_hw
*hw
,
1155 struct ieee80211_sta
*sta
, bool set
)
1157 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1159 queue_work(priv
->workqueue
, &priv
->beacon_update
);
1164 int iwlagn_mac_conf_tx(struct ieee80211_hw
*hw
,
1165 struct ieee80211_vif
*vif
, u16 queue
,
1166 const struct ieee80211_tx_queue_params
*params
)
1168 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1169 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
1170 struct iwl_rxon_context
*ctx
= vif_priv
->ctx
;
1176 IWL_DEBUG_MAC80211(priv
, "enter\n");
1178 if (!iwl_is_ready_rf(priv
)) {
1179 IWL_DEBUG_MAC80211(priv
, "leave - RF not ready\n");
1183 if (queue
>= AC_NUM
) {
1184 IWL_DEBUG_MAC80211(priv
, "leave - queue >= AC_NUM %d\n", queue
);
1188 q
= AC_NUM
- 1 - queue
;
1190 mutex_lock(&priv
->mutex
);
1192 ctx
->qos_data
.def_qos_parm
.ac
[q
].cw_min
=
1193 cpu_to_le16(params
->cw_min
);
1194 ctx
->qos_data
.def_qos_parm
.ac
[q
].cw_max
=
1195 cpu_to_le16(params
->cw_max
);
1196 ctx
->qos_data
.def_qos_parm
.ac
[q
].aifsn
= params
->aifs
;
1197 ctx
->qos_data
.def_qos_parm
.ac
[q
].edca_txop
=
1198 cpu_to_le16((params
->txop
* 32));
1200 ctx
->qos_data
.def_qos_parm
.ac
[q
].reserved1
= 0;
1202 mutex_unlock(&priv
->mutex
);
1204 IWL_DEBUG_MAC80211(priv
, "leave\n");
1208 int iwlagn_mac_tx_last_beacon(struct ieee80211_hw
*hw
)
1210 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1212 return priv
->ibss_manager
== IWL_IBSS_MANAGER
;
1215 static int iwl_set_mode(struct iwl_priv
*priv
, struct iwl_rxon_context
*ctx
)
1217 iwl_connection_init_rx_config(priv
, ctx
);
1219 iwlagn_set_rxon_chain(priv
, ctx
);
1221 return iwlagn_commit_rxon(priv
, ctx
);
1224 int iwl_setup_interface(struct iwl_priv
*priv
, struct iwl_rxon_context
*ctx
)
1226 struct ieee80211_vif
*vif
= ctx
->vif
;
1229 lockdep_assert_held(&priv
->mutex
);
1232 * This variable will be correct only when there's just
1233 * a single context, but all code using it is for hardware
1234 * that supports only one context.
1236 priv
->iw_mode
= vif
->type
;
1238 ctx
->is_active
= true;
1240 err
= iwl_set_mode(priv
, ctx
);
1242 if (!ctx
->always_active
)
1243 ctx
->is_active
= false;
1247 if (priv
->cfg
->bt_params
&& priv
->cfg
->bt_params
->advanced_bt_coexist
&&
1248 vif
->type
== NL80211_IFTYPE_ADHOC
) {
1250 * pretend to have high BT traffic as long as we
1251 * are operating in IBSS mode, as this will cause
1252 * the rate scaling etc. to behave as intended.
1254 priv
->bt_traffic_load
= IWL_BT_COEX_TRAFFIC_LOAD_HIGH
;
1257 /* set up queue mappings */
1258 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
1259 vif
->hw_queue
[ac
] = ctx
->ac_to_queue
[ac
];
1261 if (vif
->type
== NL80211_IFTYPE_AP
)
1262 vif
->cab_queue
= ctx
->mcast_queue
;
1264 vif
->cab_queue
= IEEE80211_INVAL_HW_QUEUE
;
1269 static int iwlagn_mac_add_interface(struct ieee80211_hw
*hw
,
1270 struct ieee80211_vif
*vif
)
1272 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1273 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
1274 struct iwl_rxon_context
*tmp
, *ctx
= NULL
;
1276 enum nl80211_iftype viftype
= ieee80211_vif_type_p2p(vif
);
1279 IWL_DEBUG_MAC80211(priv
, "enter: type %d, addr %pM\n",
1280 viftype
, vif
->addr
);
1282 cancel_delayed_work_sync(&priv
->hw_roc_disable_work
);
1284 mutex_lock(&priv
->mutex
);
1286 iwlagn_disable_roc(priv
);
1288 if (!iwl_is_ready_rf(priv
)) {
1289 IWL_WARN(priv
, "Try to add interface when device not ready\n");
1294 for_each_context(priv
, tmp
) {
1295 u32 possible_modes
=
1296 tmp
->interface_modes
| tmp
->exclusive_interface_modes
;
1299 /* On reset we need to add the same interface again */
1300 if (tmp
->vif
== vif
) {
1306 /* check if this busy context is exclusive */
1307 if (tmp
->exclusive_interface_modes
&
1308 BIT(tmp
->vif
->type
)) {
1315 if (!(possible_modes
& BIT(viftype
)))
1318 /* have maybe usable context w/o interface */
1328 vif_priv
->ctx
= ctx
;
1331 err
= iwl_setup_interface(priv
, ctx
);
1336 priv
->iw_mode
= NL80211_IFTYPE_STATION
;
1338 mutex_unlock(&priv
->mutex
);
1340 IWL_DEBUG_MAC80211(priv
, "leave\n");
1344 void iwl_teardown_interface(struct iwl_priv
*priv
,
1345 struct ieee80211_vif
*vif
,
1348 struct iwl_rxon_context
*ctx
= iwl_rxon_ctx_from_vif(vif
);
1350 lockdep_assert_held(&priv
->mutex
);
1352 if (priv
->scan_vif
== vif
) {
1353 iwl_scan_cancel_timeout(priv
, 200);
1354 iwl_force_scan_end(priv
);
1358 iwl_set_mode(priv
, ctx
);
1359 if (!ctx
->always_active
)
1360 ctx
->is_active
= false;
1364 * When removing the IBSS interface, overwrite the
1365 * BT traffic load with the stored one from the last
1366 * notification, if any. If this is a device that
1367 * doesn't implement this, this has no effect since
1368 * both values are the same and zero.
1370 if (vif
->type
== NL80211_IFTYPE_ADHOC
)
1371 priv
->bt_traffic_load
= priv
->last_bt_traffic_load
;
1374 static void iwlagn_mac_remove_interface(struct ieee80211_hw
*hw
,
1375 struct ieee80211_vif
*vif
)
1377 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1378 struct iwl_rxon_context
*ctx
= iwl_rxon_ctx_from_vif(vif
);
1380 IWL_DEBUG_MAC80211(priv
, "enter\n");
1382 mutex_lock(&priv
->mutex
);
1384 if (WARN_ON(ctx
->vif
!= vif
)) {
1385 struct iwl_rxon_context
*tmp
;
1386 IWL_ERR(priv
, "ctx->vif = %p, vif = %p\n", ctx
->vif
, vif
);
1387 for_each_context(priv
, tmp
)
1388 IWL_ERR(priv
, "\tID = %d:\tctx = %p\tctx->vif = %p\n",
1389 tmp
->ctxid
, tmp
, tmp
->vif
);
1393 iwl_teardown_interface(priv
, vif
, false);
1395 mutex_unlock(&priv
->mutex
);
1397 IWL_DEBUG_MAC80211(priv
, "leave\n");
1401 static int iwlagn_mac_change_interface(struct ieee80211_hw
*hw
,
1402 struct ieee80211_vif
*vif
,
1403 enum nl80211_iftype newtype
, bool newp2p
)
1405 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1406 struct iwl_rxon_context
*ctx
= iwl_rxon_ctx_from_vif(vif
);
1407 struct iwl_rxon_context
*bss_ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
1408 struct iwl_rxon_context
*tmp
;
1409 enum nl80211_iftype newviftype
= newtype
;
1410 u32 interface_modes
;
1413 IWL_DEBUG_MAC80211(priv
, "enter\n");
1415 newtype
= ieee80211_iftype_p2p(newtype
, newp2p
);
1417 mutex_lock(&priv
->mutex
);
1419 if (!ctx
->vif
|| !iwl_is_ready_rf(priv
)) {
1421 * Huh? But wait ... this can maybe happen when
1422 * we're in the middle of a firmware restart!
1428 interface_modes
= ctx
->interface_modes
| ctx
->exclusive_interface_modes
;
1430 if (!(interface_modes
& BIT(newtype
))) {
1436 * Refuse a change that should be done by moving from the PAN
1437 * context to the BSS context instead, if the BSS context is
1438 * available and can support the new interface type.
1440 if (ctx
->ctxid
== IWL_RXON_CTX_PAN
&& !bss_ctx
->vif
&&
1441 (bss_ctx
->interface_modes
& BIT(newtype
) ||
1442 bss_ctx
->exclusive_interface_modes
& BIT(newtype
))) {
1443 BUILD_BUG_ON(NUM_IWL_RXON_CTX
!= 2);
1448 if (ctx
->exclusive_interface_modes
& BIT(newtype
)) {
1449 for_each_context(priv
, tmp
) {
1457 * The current mode switch would be exclusive, but
1458 * another context is active ... refuse the switch.
1466 iwl_teardown_interface(priv
, vif
, true);
1467 vif
->type
= newviftype
;
1469 err
= iwl_setup_interface(priv
, ctx
);
1472 * We've switched internally, but submitting to the
1473 * device may have failed for some reason. Mask this
1474 * error, because otherwise mac80211 will not switch
1475 * (and set the interface type back) and we'll be
1476 * out of sync with it.
1481 mutex_unlock(&priv
->mutex
);
1482 IWL_DEBUG_MAC80211(priv
, "leave\n");
1487 int iwlagn_mac_hw_scan(struct ieee80211_hw
*hw
,
1488 struct ieee80211_vif
*vif
,
1489 struct cfg80211_scan_request
*req
)
1491 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1494 IWL_DEBUG_MAC80211(priv
, "enter\n");
1496 if (req
->n_channels
== 0)
1499 mutex_lock(&priv
->mutex
);
1502 * If an internal scan is in progress, just set
1503 * up the scan_request as per above.
1505 if (priv
->scan_type
!= IWL_SCAN_NORMAL
) {
1506 IWL_DEBUG_SCAN(priv
,
1507 "SCAN request during internal scan - defer\n");
1508 priv
->scan_request
= req
;
1509 priv
->scan_vif
= vif
;
1512 priv
->scan_request
= req
;
1513 priv
->scan_vif
= vif
;
1515 * mac80211 will only ask for one band at a time
1516 * so using channels[0] here is ok
1518 ret
= iwl_scan_initiate(priv
, vif
, IWL_SCAN_NORMAL
,
1519 req
->channels
[0]->band
);
1521 priv
->scan_request
= NULL
;
1522 priv
->scan_vif
= NULL
;
1526 IWL_DEBUG_MAC80211(priv
, "leave\n");
1528 mutex_unlock(&priv
->mutex
);
1533 static void iwl_sta_modify_ps_wake(struct iwl_priv
*priv
, int sta_id
)
1535 struct iwl_addsta_cmd cmd
= {
1536 .mode
= STA_CONTROL_MODIFY_MSK
,
1537 .station_flags_msk
= STA_FLG_PWR_SAVE_MSK
,
1538 .sta
.sta_id
= sta_id
,
1541 iwl_send_add_sta(priv
, &cmd
, CMD_ASYNC
);
1544 void iwlagn_mac_sta_notify(struct ieee80211_hw
*hw
,
1545 struct ieee80211_vif
*vif
,
1546 enum sta_notify_cmd cmd
,
1547 struct ieee80211_sta
*sta
)
1549 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1550 struct iwl_station_priv
*sta_priv
= (void *)sta
->drv_priv
;
1553 IWL_DEBUG_MAC80211(priv
, "enter\n");
1556 case STA_NOTIFY_SLEEP
:
1557 WARN_ON(!sta_priv
->client
);
1558 sta_priv
->asleep
= true;
1559 if (atomic_read(&sta_priv
->pending_frames
) > 0)
1560 ieee80211_sta_block_awake(hw
, sta
, true);
1562 case STA_NOTIFY_AWAKE
:
1563 WARN_ON(!sta_priv
->client
);
1564 if (!sta_priv
->asleep
)
1566 sta_priv
->asleep
= false;
1567 sta_id
= iwl_sta_id(sta
);
1568 if (sta_id
!= IWL_INVALID_STATION
)
1569 iwl_sta_modify_ps_wake(priv
, sta_id
);
1574 IWL_DEBUG_MAC80211(priv
, "leave\n");
1577 struct ieee80211_ops iwlagn_hw_ops
= {
1578 .tx
= iwlagn_mac_tx
,
1579 .start
= iwlagn_mac_start
,
1580 .stop
= iwlagn_mac_stop
,
1581 #ifdef CONFIG_PM_SLEEP
1582 .suspend
= iwlagn_mac_suspend
,
1583 .resume
= iwlagn_mac_resume
,
1585 .add_interface
= iwlagn_mac_add_interface
,
1586 .remove_interface
= iwlagn_mac_remove_interface
,
1587 .change_interface
= iwlagn_mac_change_interface
,
1588 .config
= iwlagn_mac_config
,
1589 .configure_filter
= iwlagn_configure_filter
,
1590 .set_key
= iwlagn_mac_set_key
,
1591 .update_tkip_key
= iwlagn_mac_update_tkip_key
,
1592 .set_rekey_data
= iwlagn_mac_set_rekey_data
,
1593 .conf_tx
= iwlagn_mac_conf_tx
,
1594 .bss_info_changed
= iwlagn_bss_info_changed
,
1595 .ampdu_action
= iwlagn_mac_ampdu_action
,
1596 .hw_scan
= iwlagn_mac_hw_scan
,
1597 .sta_notify
= iwlagn_mac_sta_notify
,
1598 .sta_state
= iwlagn_mac_sta_state
,
1599 .channel_switch
= iwlagn_mac_channel_switch
,
1600 .flush
= iwlagn_mac_flush
,
1601 .tx_last_beacon
= iwlagn_mac_tx_last_beacon
,
1602 .remain_on_channel
= iwlagn_mac_remain_on_channel
,
1603 .cancel_remain_on_channel
= iwlagn_mac_cancel_remain_on_channel
,
1604 .rssi_callback
= iwlagn_mac_rssi_callback
,
1605 CFG80211_TESTMODE_CMD(iwlagn_mac_testmode_cmd
)
1606 CFG80211_TESTMODE_DUMP(iwlagn_mac_testmode_dump
)
1607 .set_tim
= iwlagn_mac_set_tim
,
1610 /* This function both allocates and initializes hw and priv. */
1611 struct ieee80211_hw
*iwl_alloc_all(void)
1613 struct iwl_priv
*priv
;
1614 struct iwl_op_mode
*op_mode
;
1615 /* mac80211 allocates memory for this device instance, including
1616 * space for this driver's private structure */
1617 struct ieee80211_hw
*hw
;
1619 hw
= ieee80211_alloc_hw(sizeof(struct iwl_priv
) +
1620 sizeof(struct iwl_op_mode
), &iwlagn_hw_ops
);
1625 priv
= IWL_OP_MODE_GET_DVM(op_mode
);