1 /******************************************************************************
3 * Copyright(c) 2003 - 2014 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/slab.h>
32 #include <linux/dma-mapping.h>
33 #include <linux/delay.h>
34 #include <linux/sched.h>
35 #include <linux/skbuff.h>
36 #include <linux/netdevice.h>
37 #include <linux/etherdevice.h>
38 #include <linux/if_arp.h>
40 #include <net/ieee80211_radiotap.h>
41 #include <net/mac80211.h>
43 #include <asm/div64.h>
46 #include "iwl-trans.h"
47 #include "iwl-op-mode.h"
48 #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_combination
79 iwlagn_iface_combinations_dualmode
[] = {
80 { .num_different_channels
= 1,
82 .beacon_int_infra_match
= true,
83 .limits
= iwlagn_sta_ap_limits
,
84 .n_limits
= ARRAY_SIZE(iwlagn_sta_ap_limits
),
86 { .num_different_channels
= 1,
88 .limits
= iwlagn_2sta_limits
,
89 .n_limits
= ARRAY_SIZE(iwlagn_2sta_limits
),
94 * Not a mac80211 entry point function, but it fits in with all the
95 * other mac80211 functions grouped here.
97 int iwlagn_mac_setup_register(struct iwl_priv
*priv
,
98 const struct iwl_ucode_capabilities
*capa
)
101 struct ieee80211_hw
*hw
= priv
->hw
;
102 struct iwl_rxon_context
*ctx
;
104 hw
->rate_control_algorithm
= "iwl-agn-rs";
106 /* Tell mac80211 our characteristics */
107 hw
->flags
= IEEE80211_HW_SIGNAL_DBM
|
108 IEEE80211_HW_AMPDU_AGGREGATION
|
109 IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC
|
110 IEEE80211_HW_SPECTRUM_MGMT
|
111 IEEE80211_HW_REPORTS_TX_ACK_STATUS
|
112 IEEE80211_HW_QUEUE_CONTROL
|
113 IEEE80211_HW_SUPPORTS_PS
|
114 IEEE80211_HW_SUPPORTS_DYNAMIC_PS
|
115 IEEE80211_HW_WANT_MONITOR_VIF
;
117 hw
->offchannel_tx_hw_queue
= IWL_AUX_QUEUE
;
118 hw
->radiotap_mcs_details
|= IEEE80211_RADIOTAP_MCS_HAVE_FMT
;
121 * Including the following line will crash some AP's. This
122 * workaround removes the stimulus which causes the crash until
123 * the AP software can be fixed.
124 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
127 if (priv
->nvm_data
->sku_cap_11n_enable
)
128 hw
->wiphy
->features
|= NL80211_FEATURE_DYNAMIC_SMPS
|
129 NL80211_FEATURE_STATIC_SMPS
;
132 * Enable 11w if advertised by firmware and software crypto
133 * is not enabled (as the firmware will interpret some mgmt
134 * packets, so enabling it with software crypto isn't safe)
136 if (priv
->fw
->ucode_capa
.flags
& IWL_UCODE_TLV_FLAGS_MFP
&&
137 !iwlwifi_mod_params
.sw_crypto
)
138 hw
->flags
|= IEEE80211_HW_MFP_CAPABLE
;
140 hw
->sta_data_size
= sizeof(struct iwl_station_priv
);
141 hw
->vif_data_size
= sizeof(struct iwl_vif_priv
);
143 for_each_context(priv
, ctx
) {
144 hw
->wiphy
->interface_modes
|= ctx
->interface_modes
;
145 hw
->wiphy
->interface_modes
|= ctx
->exclusive_interface_modes
;
148 BUILD_BUG_ON(NUM_IWL_RXON_CTX
!= 2);
150 if (hw
->wiphy
->interface_modes
& BIT(NL80211_IFTYPE_AP
)) {
151 hw
->wiphy
->iface_combinations
=
152 iwlagn_iface_combinations_dualmode
;
153 hw
->wiphy
->n_iface_combinations
=
154 ARRAY_SIZE(iwlagn_iface_combinations_dualmode
);
157 hw
->wiphy
->flags
|= WIPHY_FLAG_IBSS_RSN
;
158 hw
->wiphy
->regulatory_flags
|= REGULATORY_CUSTOM_REG
|
159 REGULATORY_DISABLE_BEACON_HINTS
;
161 #ifdef CONFIG_PM_SLEEP
162 if (priv
->fw
->img
[IWL_UCODE_WOWLAN
].sec
[0].len
&&
163 priv
->trans
->ops
->d3_suspend
&&
164 priv
->trans
->ops
->d3_resume
&&
165 device_can_wakeup(priv
->trans
->dev
)) {
166 priv
->wowlan_support
.flags
= WIPHY_WOWLAN_MAGIC_PKT
|
167 WIPHY_WOWLAN_DISCONNECT
|
168 WIPHY_WOWLAN_EAP_IDENTITY_REQ
|
169 WIPHY_WOWLAN_RFKILL_RELEASE
;
170 if (!iwlwifi_mod_params
.sw_crypto
)
171 priv
->wowlan_support
.flags
|=
172 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY
|
173 WIPHY_WOWLAN_GTK_REKEY_FAILURE
;
175 priv
->wowlan_support
.n_patterns
= IWLAGN_WOWLAN_MAX_PATTERNS
;
176 priv
->wowlan_support
.pattern_min_len
=
177 IWLAGN_WOWLAN_MIN_PATTERN_LEN
;
178 priv
->wowlan_support
.pattern_max_len
=
179 IWLAGN_WOWLAN_MAX_PATTERN_LEN
;
180 hw
->wiphy
->wowlan
= &priv
->wowlan_support
;
184 if (iwlwifi_mod_params
.power_save
)
185 hw
->wiphy
->flags
|= WIPHY_FLAG_PS_ON_BY_DEFAULT
;
187 hw
->wiphy
->flags
&= ~WIPHY_FLAG_PS_ON_BY_DEFAULT
;
189 hw
->wiphy
->max_scan_ssids
= PROBE_OPTION_MAX
;
190 /* we create the 802.11 header and a max-length SSID element */
191 hw
->wiphy
->max_scan_ie_len
= capa
->max_probe_length
- 24 - 34;
194 * We don't use all queues: 4 and 9 are unused and any
195 * aggregation queue gets mapped down to the AC queue.
197 hw
->queues
= IWLAGN_FIRST_AMPDU_QUEUE
;
199 hw
->max_listen_interval
= IWL_CONN_MAX_LISTEN_INTERVAL
;
201 if (priv
->nvm_data
->bands
[IEEE80211_BAND_2GHZ
].n_channels
)
202 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] =
203 &priv
->nvm_data
->bands
[IEEE80211_BAND_2GHZ
];
204 if (priv
->nvm_data
->bands
[IEEE80211_BAND_5GHZ
].n_channels
)
205 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] =
206 &priv
->nvm_data
->bands
[IEEE80211_BAND_5GHZ
];
208 hw
->wiphy
->hw_version
= priv
->trans
->hw_id
;
212 ret
= ieee80211_register_hw(priv
->hw
);
214 IWL_ERR(priv
, "Failed to register hw (error %d)\n", ret
);
218 priv
->mac80211_registered
= 1;
223 void iwlagn_mac_unregister(struct iwl_priv
*priv
)
225 if (!priv
->mac80211_registered
)
228 ieee80211_unregister_hw(priv
->hw
);
229 priv
->mac80211_registered
= 0;
232 static int __iwl_up(struct iwl_priv
*priv
)
234 struct iwl_rxon_context
*ctx
;
237 lockdep_assert_held(&priv
->mutex
);
239 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
240 IWL_WARN(priv
, "Exit pending; will not bring the NIC up\n");
244 for_each_context(priv
, ctx
) {
245 ret
= iwlagn_alloc_bcast_station(priv
, ctx
);
247 iwl_dealloc_bcast_stations(priv
);
252 ret
= iwl_run_init_ucode(priv
);
254 IWL_ERR(priv
, "Failed to run INIT ucode: %d\n", ret
);
258 ret
= iwl_load_ucode_wait_alive(priv
, IWL_UCODE_REGULAR
);
260 IWL_ERR(priv
, "Failed to start RT ucode: %d\n", ret
);
264 ret
= iwl_alive_start(priv
);
270 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
272 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
274 IWL_ERR(priv
, "Unable to initialize device.\n");
278 static int iwlagn_mac_start(struct ieee80211_hw
*hw
)
280 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
283 IWL_DEBUG_MAC80211(priv
, "enter\n");
285 /* we should be verifying the device is ready to be opened */
286 mutex_lock(&priv
->mutex
);
287 ret
= __iwl_up(priv
);
288 mutex_unlock(&priv
->mutex
);
292 IWL_DEBUG_INFO(priv
, "Start UP work done.\n");
294 /* Now we should be done, and the READY bit should be set. */
295 if (WARN_ON(!test_bit(STATUS_READY
, &priv
->status
)))
298 iwlagn_led_enable(priv
);
301 IWL_DEBUG_MAC80211(priv
, "leave\n");
305 static void iwlagn_mac_stop(struct ieee80211_hw
*hw
)
307 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
309 IWL_DEBUG_MAC80211(priv
, "enter\n");
316 mutex_lock(&priv
->mutex
);
318 mutex_unlock(&priv
->mutex
);
320 iwl_cancel_deferred_work(priv
);
322 flush_workqueue(priv
->workqueue
);
324 IWL_DEBUG_MAC80211(priv
, "leave\n");
327 static void iwlagn_mac_set_rekey_data(struct ieee80211_hw
*hw
,
328 struct ieee80211_vif
*vif
,
329 struct cfg80211_gtk_rekey_data
*data
)
331 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
333 if (iwlwifi_mod_params
.sw_crypto
)
336 IWL_DEBUG_MAC80211(priv
, "enter\n");
337 mutex_lock(&priv
->mutex
);
339 if (priv
->contexts
[IWL_RXON_CTX_BSS
].vif
!= vif
)
342 memcpy(priv
->kek
, data
->kek
, NL80211_KEK_LEN
);
343 memcpy(priv
->kck
, data
->kck
, NL80211_KCK_LEN
);
345 cpu_to_le64(be64_to_cpup((__be64
*)&data
->replay_ctr
));
346 priv
->have_rekey_data
= true;
349 mutex_unlock(&priv
->mutex
);
350 IWL_DEBUG_MAC80211(priv
, "leave\n");
353 #ifdef CONFIG_PM_SLEEP
355 static int iwlagn_mac_suspend(struct ieee80211_hw
*hw
,
356 struct cfg80211_wowlan
*wowlan
)
358 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
359 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
362 if (WARN_ON(!wowlan
))
365 IWL_DEBUG_MAC80211(priv
, "enter\n");
366 mutex_lock(&priv
->mutex
);
368 /* Don't attempt WoWLAN when not associated, tear down instead. */
369 if (!ctx
->vif
|| ctx
->vif
->type
!= NL80211_IFTYPE_STATION
||
370 !iwl_is_associated_ctx(ctx
)) {
375 ret
= iwlagn_suspend(priv
, wowlan
);
379 /* let the ucode operate on its own */
380 iwl_write32(priv
->trans
, CSR_UCODE_DRV_GP1_SET
,
381 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE
);
383 iwl_trans_d3_suspend(priv
->trans
, false);
388 priv
->wowlan
= false;
389 iwlagn_prepare_restart(priv
);
390 ieee80211_restart_hw(priv
->hw
);
392 mutex_unlock(&priv
->mutex
);
393 IWL_DEBUG_MAC80211(priv
, "leave\n");
398 struct iwl_resume_data
{
399 struct iwl_priv
*priv
;
400 struct iwlagn_wowlan_status
*cmd
;
404 static bool iwl_resume_status_fn(struct iwl_notif_wait_data
*notif_wait
,
405 struct iwl_rx_packet
*pkt
, void *data
)
407 struct iwl_resume_data
*resume_data
= data
;
408 struct iwl_priv
*priv
= resume_data
->priv
;
410 if (iwl_rx_packet_payload_len(pkt
) != sizeof(*resume_data
->cmd
)) {
411 IWL_ERR(priv
, "rx wrong size data\n");
414 memcpy(resume_data
->cmd
, pkt
->data
, sizeof(*resume_data
->cmd
));
415 resume_data
->valid
= true;
420 static int iwlagn_mac_resume(struct ieee80211_hw
*hw
)
422 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
423 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
424 struct ieee80211_vif
*vif
;
427 enum iwl_d3_status d3_status
;
428 struct error_table_start
{
429 /* cf. struct iwl_error_event_table */
433 struct iwl_notification_wait status_wait
;
434 static const u8 status_cmd
[] = {
435 REPLY_WOWLAN_GET_STATUS
,
437 struct iwlagn_wowlan_status status_data
= {};
438 struct iwl_resume_data resume_data
= {
443 struct cfg80211_wowlan_wakeup wakeup
= {
446 #ifdef CONFIG_IWLWIFI_DEBUGFS
447 const struct fw_img
*img
;
450 IWL_DEBUG_MAC80211(priv
, "enter\n");
451 mutex_lock(&priv
->mutex
);
453 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
456 ret
= iwl_trans_d3_resume(priv
->trans
, &d3_status
, false);
460 if (d3_status
!= IWL_D3_STATUS_ALIVE
) {
461 IWL_INFO(priv
, "Device was reset during suspend\n");
465 /* uCode is no longer operating by itself */
466 iwl_write32(priv
->trans
, CSR_UCODE_DRV_GP1_CLR
,
467 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE
);
469 base
= priv
->device_pointers
.error_event_table
;
470 if (!iwlagn_hw_valid_rtc_data_addr(base
)) {
471 IWL_WARN(priv
, "Invalid error table during resume!\n");
475 iwl_trans_read_mem_bytes(priv
->trans
, base
,
476 &err_info
, sizeof(err_info
));
478 if (err_info
.valid
) {
479 IWL_INFO(priv
, "error table is valid (%d, 0x%x)\n",
480 err_info
.valid
, err_info
.error_id
);
481 if (err_info
.error_id
== RF_KILL_INDICATOR_FOR_WOWLAN
) {
482 wakeup
.rfkill_release
= true;
483 ieee80211_report_wowlan_wakeup(vif
, &wakeup
,
489 #ifdef CONFIG_IWLWIFI_DEBUGFS
490 img
= &priv
->fw
->img
[IWL_UCODE_WOWLAN
];
491 if (!priv
->wowlan_sram
)
493 kzalloc(img
->sec
[IWL_UCODE_SECTION_DATA
].len
,
496 if (priv
->wowlan_sram
)
497 iwl_trans_read_mem(priv
->trans
, 0x800000,
499 img
->sec
[IWL_UCODE_SECTION_DATA
].len
/ 4);
503 * This is very strange. The GET_STATUS command is sent but the device
504 * doesn't reply properly, it seems it doesn't close the RBD so one is
505 * always left open ... As a result, we need to send another command
506 * and have to reset the driver afterwards. As we need to switch to
507 * runtime firmware again that'll happen.
510 iwl_init_notification_wait(&priv
->notif_wait
, &status_wait
, status_cmd
,
511 ARRAY_SIZE(status_cmd
), iwl_resume_status_fn
,
514 iwl_dvm_send_cmd_pdu(priv
, REPLY_WOWLAN_GET_STATUS
, CMD_ASYNC
, 0, NULL
);
515 iwl_dvm_send_cmd_pdu(priv
, REPLY_ECHO
, CMD_ASYNC
, 0, NULL
);
516 /* an RBD is left open in the firmware now! */
518 ret
= iwl_wait_notification(&priv
->notif_wait
, &status_wait
, HZ
/5);
522 if (resume_data
.valid
&& priv
->contexts
[IWL_RXON_CTX_BSS
].vif
) {
523 u32 reasons
= le32_to_cpu(status_data
.wakeup_reason
);
524 struct cfg80211_wowlan_wakeup
*wakeup_report
;
526 IWL_INFO(priv
, "WoWLAN wakeup reason(s): 0x%.8x\n", reasons
);
529 if (reasons
& IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET
)
530 wakeup
.magic_pkt
= true;
531 if (reasons
& IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH
)
532 wakeup
.pattern_idx
= status_data
.pattern_number
;
533 if (reasons
& (IWLAGN_WOWLAN_WAKEUP_BEACON_MISS
|
534 IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE
))
535 wakeup
.disconnect
= true;
536 if (reasons
& IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL
)
537 wakeup
.gtk_rekey_failure
= true;
538 if (reasons
& IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ
)
539 wakeup
.eap_identity_req
= true;
540 if (reasons
& IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE
)
541 wakeup
.four_way_handshake
= true;
542 wakeup_report
= &wakeup
;
544 wakeup_report
= NULL
;
547 ieee80211_report_wowlan_wakeup(vif
, wakeup_report
, GFP_KERNEL
);
550 priv
->wowlan
= false;
552 iwlagn_prepare_restart(priv
);
554 memset((void *)&ctx
->active
, 0, sizeof(ctx
->active
));
555 iwl_connection_init_rx_config(priv
, ctx
);
556 iwlagn_set_rxon_chain(priv
, ctx
);
559 mutex_unlock(&priv
->mutex
);
560 IWL_DEBUG_MAC80211(priv
, "leave\n");
562 ieee80211_resume_disconnect(vif
);
567 static void iwlagn_mac_set_wakeup(struct ieee80211_hw
*hw
, bool enabled
)
569 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
571 device_set_wakeup_enable(priv
->trans
->dev
, enabled
);
575 static void iwlagn_mac_tx(struct ieee80211_hw
*hw
,
576 struct ieee80211_tx_control
*control
,
579 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
581 if (iwlagn_tx_skb(priv
, control
->sta
, skb
))
582 ieee80211_free_txskb(hw
, skb
);
585 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw
*hw
,
586 struct ieee80211_vif
*vif
,
587 struct ieee80211_key_conf
*keyconf
,
588 struct ieee80211_sta
*sta
,
589 u32 iv32
, u16
*phase1key
)
591 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
593 iwl_update_tkip_key(priv
, vif
, keyconf
, sta
, iv32
, phase1key
);
596 static int iwlagn_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
597 struct ieee80211_vif
*vif
,
598 struct ieee80211_sta
*sta
,
599 struct ieee80211_key_conf
*key
)
601 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
602 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
603 struct iwl_rxon_context
*ctx
= vif_priv
->ctx
;
605 bool is_default_wep_key
= false;
607 IWL_DEBUG_MAC80211(priv
, "enter\n");
609 if (iwlwifi_mod_params
.sw_crypto
) {
610 IWL_DEBUG_MAC80211(priv
, "leave - hwcrypto disabled\n");
614 switch (key
->cipher
) {
615 case WLAN_CIPHER_SUITE_TKIP
:
616 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_MMIC
;
618 case WLAN_CIPHER_SUITE_CCMP
:
619 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
626 * We could program these keys into the hardware as well, but we
627 * don't expect much multicast traffic in IBSS and having keys
628 * for more stations is probably more useful.
630 * Mark key TX-only and return 0.
632 if (vif
->type
== NL80211_IFTYPE_ADHOC
&&
633 !(key
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
)) {
634 key
->hw_key_idx
= WEP_INVALID_OFFSET
;
638 /* If they key was TX-only, accept deletion */
639 if (cmd
== DISABLE_KEY
&& key
->hw_key_idx
== WEP_INVALID_OFFSET
)
642 mutex_lock(&priv
->mutex
);
643 iwl_scan_cancel_timeout(priv
, 100);
645 BUILD_BUG_ON(WEP_INVALID_OFFSET
== IWLAGN_HW_KEY_DEFAULT
);
648 * If we are getting WEP group key and we didn't receive any key mapping
649 * so far, we are in legacy wep mode (group key only), otherwise we are
651 * In legacy wep mode, we use another host command to the uCode.
653 if ((key
->cipher
== WLAN_CIPHER_SUITE_WEP40
||
654 key
->cipher
== WLAN_CIPHER_SUITE_WEP104
) && !sta
) {
656 is_default_wep_key
= !ctx
->key_mapping_keys
;
659 key
->hw_key_idx
== IWLAGN_HW_KEY_DEFAULT
;
665 if (is_default_wep_key
) {
666 ret
= iwl_set_default_wep_key(priv
, vif_priv
->ctx
, key
);
669 ret
= iwl_set_dynamic_key(priv
, vif_priv
->ctx
, key
, sta
);
672 * can't add key for RX, but we don't need it
673 * in the device for TX so still return 0
676 key
->hw_key_idx
= WEP_INVALID_OFFSET
;
679 IWL_DEBUG_MAC80211(priv
, "enable hwcrypto key\n");
682 if (is_default_wep_key
)
683 ret
= iwl_remove_default_wep_key(priv
, ctx
, key
);
685 ret
= iwl_remove_dynamic_key(priv
, ctx
, key
, sta
);
687 IWL_DEBUG_MAC80211(priv
, "disable hwcrypto key\n");
693 mutex_unlock(&priv
->mutex
);
694 IWL_DEBUG_MAC80211(priv
, "leave\n");
699 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg
*cfg
)
701 if (iwlwifi_mod_params
.disable_11n
& IWL_DISABLE_HT_RXAGG
)
706 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg
*cfg
)
708 if (iwlwifi_mod_params
.disable_11n
& IWL_DISABLE_HT_TXAGG
)
710 if (iwlwifi_mod_params
.disable_11n
& IWL_ENABLE_HT_TXAGG
)
713 /* disabled by default */
717 static int iwlagn_mac_ampdu_action(struct ieee80211_hw
*hw
,
718 struct ieee80211_vif
*vif
,
719 enum ieee80211_ampdu_mlme_action action
,
720 struct ieee80211_sta
*sta
, u16 tid
, u16
*ssn
,
723 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
725 struct iwl_station_priv
*sta_priv
= (void *) sta
->drv_priv
;
727 IWL_DEBUG_HT(priv
, "A-MPDU action on addr %pM tid %d\n",
730 if (!(priv
->nvm_data
->sku_cap_11n_enable
))
733 IWL_DEBUG_MAC80211(priv
, "enter\n");
734 mutex_lock(&priv
->mutex
);
737 case IEEE80211_AMPDU_RX_START
:
738 if (!iwl_enable_rx_ampdu(priv
->cfg
))
740 IWL_DEBUG_HT(priv
, "start Rx\n");
741 ret
= iwl_sta_rx_agg_start(priv
, sta
, tid
, *ssn
);
743 case IEEE80211_AMPDU_RX_STOP
:
744 IWL_DEBUG_HT(priv
, "stop Rx\n");
745 ret
= iwl_sta_rx_agg_stop(priv
, sta
, tid
);
747 case IEEE80211_AMPDU_TX_START
:
748 if (!priv
->trans
->ops
->txq_enable
)
750 if (!iwl_enable_tx_ampdu(priv
->cfg
))
752 IWL_DEBUG_HT(priv
, "start Tx\n");
753 ret
= iwlagn_tx_agg_start(priv
, vif
, sta
, tid
, ssn
);
755 case IEEE80211_AMPDU_TX_STOP_FLUSH
:
756 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT
:
757 IWL_DEBUG_HT(priv
, "Flush Tx\n");
758 ret
= iwlagn_tx_agg_flush(priv
, vif
, sta
, tid
);
760 case IEEE80211_AMPDU_TX_STOP_CONT
:
761 IWL_DEBUG_HT(priv
, "stop Tx\n");
762 ret
= iwlagn_tx_agg_stop(priv
, vif
, sta
, tid
);
763 if ((ret
== 0) && (priv
->agg_tids_count
> 0)) {
764 priv
->agg_tids_count
--;
765 IWL_DEBUG_HT(priv
, "priv->agg_tids_count = %u\n",
766 priv
->agg_tids_count
);
768 if (!priv
->agg_tids_count
&&
769 priv
->hw_params
.use_rts_for_aggregation
) {
771 * switch off RTS/CTS if it was previously enabled
773 sta_priv
->lq_sta
.lq
.general_params
.flags
&=
774 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK
;
775 iwl_send_lq_cmd(priv
, iwl_rxon_ctx_from_vif(vif
),
776 &sta_priv
->lq_sta
.lq
, CMD_ASYNC
, false);
779 case IEEE80211_AMPDU_TX_OPERATIONAL
:
780 ret
= iwlagn_tx_agg_oper(priv
, vif
, sta
, tid
, buf_size
);
783 mutex_unlock(&priv
->mutex
);
784 IWL_DEBUG_MAC80211(priv
, "leave\n");
788 static int iwlagn_mac_sta_add(struct ieee80211_hw
*hw
,
789 struct ieee80211_vif
*vif
,
790 struct ieee80211_sta
*sta
)
792 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
793 struct iwl_station_priv
*sta_priv
= (void *)sta
->drv_priv
;
794 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
795 bool is_ap
= vif
->type
== NL80211_IFTYPE_STATION
;
799 IWL_DEBUG_INFO(priv
, "proceeding to add station %pM\n",
801 sta_priv
->sta_id
= IWL_INVALID_STATION
;
803 atomic_set(&sta_priv
->pending_frames
, 0);
804 if (vif
->type
== NL80211_IFTYPE_AP
)
805 sta_priv
->client
= true;
807 ret
= iwl_add_station_common(priv
, vif_priv
->ctx
, sta
->addr
,
808 is_ap
, sta
, &sta_id
);
810 IWL_ERR(priv
, "Unable to add station %pM (%d)\n",
812 /* Should we return success if return code is EEXIST ? */
816 sta_priv
->sta_id
= sta_id
;
821 static int iwlagn_mac_sta_remove(struct ieee80211_hw
*hw
,
822 struct ieee80211_vif
*vif
,
823 struct ieee80211_sta
*sta
)
825 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
826 struct iwl_station_priv
*sta_priv
= (void *)sta
->drv_priv
;
829 IWL_DEBUG_INFO(priv
, "proceeding to remove station %pM\n", sta
->addr
);
831 if (vif
->type
== NL80211_IFTYPE_STATION
) {
833 * Station will be removed from device when the RXON
834 * is set to unassociated -- just deactivate it here
835 * to avoid re-programming it.
838 iwl_deactivate_station(priv
, sta_priv
->sta_id
, sta
->addr
);
840 ret
= iwl_remove_station(priv
, sta_priv
->sta_id
, sta
->addr
);
842 IWL_DEBUG_QUIET_RFKILL(priv
,
843 "Error removing station %pM\n", sta
->addr
);
848 static int iwlagn_mac_sta_state(struct ieee80211_hw
*hw
,
849 struct ieee80211_vif
*vif
,
850 struct ieee80211_sta
*sta
,
851 enum ieee80211_sta_state old_state
,
852 enum ieee80211_sta_state new_state
)
854 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
855 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
857 NONE
, ADD
, REMOVE
, HT_RATE_INIT
, ADD_RATE_INIT
,
861 IWL_DEBUG_MAC80211(priv
, "station %pM state change %d->%d\n",
862 sta
->addr
, old_state
, new_state
);
864 mutex_lock(&priv
->mutex
);
865 if (vif
->type
== NL80211_IFTYPE_STATION
) {
866 if (old_state
== IEEE80211_STA_NOTEXIST
&&
867 new_state
== IEEE80211_STA_NONE
)
869 else if (old_state
== IEEE80211_STA_NONE
&&
870 new_state
== IEEE80211_STA_NOTEXIST
)
872 else if (old_state
== IEEE80211_STA_AUTH
&&
873 new_state
== IEEE80211_STA_ASSOC
)
876 if (old_state
== IEEE80211_STA_AUTH
&&
877 new_state
== IEEE80211_STA_ASSOC
)
879 else if (old_state
== IEEE80211_STA_ASSOC
&&
880 new_state
== IEEE80211_STA_AUTH
)
886 ret
= iwlagn_mac_sta_add(hw
, vif
, sta
);
890 * Clear the in-progress flag, the AP station entry was added
891 * but we'll initialize LQ only when we've associated (which
892 * would also clear the in-progress flag). This is necessary
893 * in case we never initialize LQ because association fails.
895 spin_lock_bh(&priv
->sta_lock
);
896 priv
->stations
[iwl_sta_id(sta
)].used
&=
897 ~IWL_STA_UCODE_INPROGRESS
;
898 spin_unlock_bh(&priv
->sta_lock
);
901 ret
= iwlagn_mac_sta_remove(hw
, vif
, sta
);
904 ret
= iwlagn_mac_sta_add(hw
, vif
, sta
);
907 /* Initialize rate scaling */
909 "Initializing rate scaling for station %pM\n",
911 iwl_rs_rate_init(priv
, sta
, iwl_sta_id(sta
));
915 /* Initialize rate scaling */
916 ret
= iwl_sta_update_ht(priv
, vif_priv
->ctx
, sta
);
920 "Initializing rate scaling for station %pM\n",
922 iwl_rs_rate_init(priv
, sta
, iwl_sta_id(sta
));
931 * mac80211 might WARN if we fail, but due the way we
932 * (badly) handle hard rfkill, we might fail here
934 if (iwl_is_rfkill(priv
))
937 mutex_unlock(&priv
->mutex
);
938 IWL_DEBUG_MAC80211(priv
, "leave\n");
943 static void iwlagn_mac_channel_switch(struct ieee80211_hw
*hw
,
944 struct ieee80211_vif
*vif
,
945 struct ieee80211_channel_switch
*ch_switch
)
947 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
948 struct ieee80211_conf
*conf
= &hw
->conf
;
949 struct ieee80211_channel
*channel
= ch_switch
->chandef
.chan
;
950 struct iwl_ht_config
*ht_conf
= &priv
->current_ht_config
;
953 * When we add support for multiple interfaces, we need to
954 * revisit this. The channel switch command in the device
955 * only affects the BSS context, but what does that really
956 * mean? And what if we get a CSA on the second interface?
957 * This needs a lot of work.
959 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
962 IWL_DEBUG_MAC80211(priv
, "enter\n");
964 mutex_lock(&priv
->mutex
);
966 if (iwl_is_rfkill(priv
))
969 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
) ||
970 test_bit(STATUS_SCANNING
, &priv
->status
) ||
971 test_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->status
))
974 if (!iwl_is_associated_ctx(ctx
))
977 if (!priv
->lib
->set_channel_switch
)
980 ch
= channel
->hw_value
;
981 if (le16_to_cpu(ctx
->active
.channel
) == ch
)
984 priv
->current_ht_config
.smps
= conf
->smps_mode
;
986 /* Configure HT40 channels */
987 switch (cfg80211_get_chandef_type(&ch_switch
->chandef
)) {
988 case NL80211_CHAN_NO_HT
:
989 case NL80211_CHAN_HT20
:
990 ctx
->ht
.is_40mhz
= false;
991 ctx
->ht
.extension_chan_offset
= IEEE80211_HT_PARAM_CHA_SEC_NONE
;
993 case NL80211_CHAN_HT40MINUS
:
994 ctx
->ht
.extension_chan_offset
= IEEE80211_HT_PARAM_CHA_SEC_BELOW
;
995 ctx
->ht
.is_40mhz
= true;
997 case NL80211_CHAN_HT40PLUS
:
998 ctx
->ht
.extension_chan_offset
= IEEE80211_HT_PARAM_CHA_SEC_ABOVE
;
999 ctx
->ht
.is_40mhz
= true;
1003 if ((le16_to_cpu(ctx
->staging
.channel
) != ch
))
1004 ctx
->staging
.flags
= 0;
1006 iwl_set_rxon_channel(priv
, channel
, ctx
);
1007 iwl_set_rxon_ht(priv
, ht_conf
);
1008 iwl_set_flags_for_band(priv
, ctx
, channel
->band
, ctx
->vif
);
1011 * at this point, staging_rxon has the
1012 * configuration for channel switch
1014 set_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->status
);
1015 priv
->switch_channel
= cpu_to_le16(ch
);
1016 if (priv
->lib
->set_channel_switch(priv
, ch_switch
)) {
1017 clear_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->status
);
1018 priv
->switch_channel
= 0;
1019 ieee80211_chswitch_done(ctx
->vif
, false);
1023 mutex_unlock(&priv
->mutex
);
1024 IWL_DEBUG_MAC80211(priv
, "leave\n");
1027 void iwl_chswitch_done(struct iwl_priv
*priv
, bool is_success
)
1031 * See iwlagn_mac_channel_switch.
1033 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
1035 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1038 if (!test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->status
))
1042 ieee80211_chswitch_done(ctx
->vif
, is_success
);
1045 static void iwlagn_configure_filter(struct ieee80211_hw
*hw
,
1046 unsigned int changed_flags
,
1047 unsigned int *total_flags
,
1050 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1051 __le32 filter_or
= 0, filter_nand
= 0;
1052 struct iwl_rxon_context
*ctx
;
1054 #define CHK(test, flag) do { \
1055 if (*total_flags & (test)) \
1056 filter_or |= (flag); \
1058 filter_nand |= (flag); \
1061 IWL_DEBUG_MAC80211(priv
, "Enter: changed: 0x%x, total: 0x%x\n",
1062 changed_flags
, *total_flags
);
1064 CHK(FIF_OTHER_BSS
| FIF_PROMISC_IN_BSS
, RXON_FILTER_PROMISC_MSK
);
1065 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
1066 CHK(FIF_CONTROL
, RXON_FILTER_CTL2HOST_MSK
| RXON_FILTER_PROMISC_MSK
);
1067 CHK(FIF_BCN_PRBRESP_PROMISC
, RXON_FILTER_BCON_AWARE_MSK
);
1071 mutex_lock(&priv
->mutex
);
1073 for_each_context(priv
, ctx
) {
1074 ctx
->staging
.filter_flags
&= ~filter_nand
;
1075 ctx
->staging
.filter_flags
|= filter_or
;
1078 * Not committing directly because hardware can perform a scan,
1079 * but we'll eventually commit the filter flags change anyway.
1083 mutex_unlock(&priv
->mutex
);
1086 * Receiving all multicast frames is always enabled by the
1087 * default flags setup in iwl_connection_init_rx_config()
1088 * since we currently do not support programming multicast
1089 * filters into the device.
1091 *total_flags
&= FIF_OTHER_BSS
| FIF_ALLMULTI
| FIF_PROMISC_IN_BSS
|
1092 FIF_BCN_PRBRESP_PROMISC
| FIF_CONTROL
;
1095 static void iwlagn_mac_flush(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
,
1096 u32 queues
, bool drop
)
1098 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1101 mutex_lock(&priv
->mutex
);
1102 IWL_DEBUG_MAC80211(priv
, "enter\n");
1104 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
1105 IWL_DEBUG_TX(priv
, "Aborting flush due to device shutdown\n");
1108 if (iwl_is_rfkill(priv
)) {
1109 IWL_DEBUG_TX(priv
, "Aborting flush due to RF Kill\n");
1113 scd_queues
= BIT(priv
->cfg
->base_params
->num_of_queues
) - 1;
1114 scd_queues
&= ~(BIT(IWL_IPAN_CMD_QUEUE_NUM
) |
1115 BIT(IWL_DEFAULT_CMD_QUEUE_NUM
));
1118 scd_queues
&= ~BIT(vif
->hw_queue
[IEEE80211_AC_VO
]);
1120 IWL_DEBUG_TX_QUEUES(priv
, "Flushing SCD queues: 0x%x\n", scd_queues
);
1121 if (iwlagn_txfifo_flush(priv
, scd_queues
)) {
1122 IWL_ERR(priv
, "flush request fail\n");
1125 IWL_DEBUG_TX_QUEUES(priv
, "wait transmit/flush all frames\n");
1126 iwl_trans_wait_tx_queue_empty(priv
->trans
, 0xffffffff);
1128 mutex_unlock(&priv
->mutex
);
1129 IWL_DEBUG_MAC80211(priv
, "leave\n");
1132 static void iwlagn_mac_rssi_callback(struct ieee80211_hw
*hw
,
1133 struct ieee80211_vif
*vif
,
1134 enum ieee80211_rssi_event rssi_event
)
1136 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1138 IWL_DEBUG_MAC80211(priv
, "enter\n");
1139 mutex_lock(&priv
->mutex
);
1141 if (priv
->lib
->bt_params
&&
1142 priv
->lib
->bt_params
->advanced_bt_coexist
) {
1143 if (rssi_event
== RSSI_EVENT_LOW
)
1144 priv
->bt_enable_pspoll
= true;
1145 else if (rssi_event
== RSSI_EVENT_HIGH
)
1146 priv
->bt_enable_pspoll
= false;
1148 iwlagn_send_advance_bt_config(priv
);
1150 IWL_DEBUG_MAC80211(priv
, "Advanced BT coex disabled,"
1151 "ignoring RSSI callback\n");
1154 mutex_unlock(&priv
->mutex
);
1155 IWL_DEBUG_MAC80211(priv
, "leave\n");
1158 static int iwlagn_mac_set_tim(struct ieee80211_hw
*hw
,
1159 struct ieee80211_sta
*sta
, bool set
)
1161 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1163 queue_work(priv
->workqueue
, &priv
->beacon_update
);
1168 static int iwlagn_mac_conf_tx(struct ieee80211_hw
*hw
,
1169 struct ieee80211_vif
*vif
, u16 queue
,
1170 const struct ieee80211_tx_queue_params
*params
)
1172 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1173 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
1174 struct iwl_rxon_context
*ctx
= vif_priv
->ctx
;
1180 IWL_DEBUG_MAC80211(priv
, "enter\n");
1182 if (!iwl_is_ready_rf(priv
)) {
1183 IWL_DEBUG_MAC80211(priv
, "leave - RF not ready\n");
1187 if (queue
>= AC_NUM
) {
1188 IWL_DEBUG_MAC80211(priv
, "leave - queue >= AC_NUM %d\n", queue
);
1192 q
= AC_NUM
- 1 - queue
;
1194 mutex_lock(&priv
->mutex
);
1196 ctx
->qos_data
.def_qos_parm
.ac
[q
].cw_min
=
1197 cpu_to_le16(params
->cw_min
);
1198 ctx
->qos_data
.def_qos_parm
.ac
[q
].cw_max
=
1199 cpu_to_le16(params
->cw_max
);
1200 ctx
->qos_data
.def_qos_parm
.ac
[q
].aifsn
= params
->aifs
;
1201 ctx
->qos_data
.def_qos_parm
.ac
[q
].edca_txop
=
1202 cpu_to_le16((params
->txop
* 32));
1204 ctx
->qos_data
.def_qos_parm
.ac
[q
].reserved1
= 0;
1206 mutex_unlock(&priv
->mutex
);
1208 IWL_DEBUG_MAC80211(priv
, "leave\n");
1212 static int iwlagn_mac_tx_last_beacon(struct ieee80211_hw
*hw
)
1214 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1216 return priv
->ibss_manager
== IWL_IBSS_MANAGER
;
1219 static int iwl_set_mode(struct iwl_priv
*priv
, struct iwl_rxon_context
*ctx
)
1221 iwl_connection_init_rx_config(priv
, ctx
);
1223 iwlagn_set_rxon_chain(priv
, ctx
);
1225 return iwlagn_commit_rxon(priv
, ctx
);
1228 static int iwl_setup_interface(struct iwl_priv
*priv
,
1229 struct iwl_rxon_context
*ctx
)
1231 struct ieee80211_vif
*vif
= ctx
->vif
;
1234 lockdep_assert_held(&priv
->mutex
);
1237 * This variable will be correct only when there's just
1238 * a single context, but all code using it is for hardware
1239 * that supports only one context.
1241 priv
->iw_mode
= vif
->type
;
1243 ctx
->is_active
= true;
1245 err
= iwl_set_mode(priv
, ctx
);
1247 if (!ctx
->always_active
)
1248 ctx
->is_active
= false;
1252 if (priv
->lib
->bt_params
&& priv
->lib
->bt_params
->advanced_bt_coexist
&&
1253 vif
->type
== NL80211_IFTYPE_ADHOC
) {
1255 * pretend to have high BT traffic as long as we
1256 * are operating in IBSS mode, as this will cause
1257 * the rate scaling etc. to behave as intended.
1259 priv
->bt_traffic_load
= IWL_BT_COEX_TRAFFIC_LOAD_HIGH
;
1262 /* set up queue mappings */
1263 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
1264 vif
->hw_queue
[ac
] = ctx
->ac_to_queue
[ac
];
1266 if (vif
->type
== NL80211_IFTYPE_AP
)
1267 vif
->cab_queue
= ctx
->mcast_queue
;
1269 vif
->cab_queue
= IEEE80211_INVAL_HW_QUEUE
;
1274 static int iwlagn_mac_add_interface(struct ieee80211_hw
*hw
,
1275 struct ieee80211_vif
*vif
)
1277 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1278 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
1279 struct iwl_rxon_context
*tmp
, *ctx
= NULL
;
1281 enum nl80211_iftype viftype
= ieee80211_vif_type_p2p(vif
);
1284 IWL_DEBUG_MAC80211(priv
, "enter: type %d, addr %pM\n",
1285 viftype
, vif
->addr
);
1287 mutex_lock(&priv
->mutex
);
1289 if (!iwl_is_ready_rf(priv
)) {
1290 IWL_WARN(priv
, "Try to add interface when device not ready\n");
1295 for_each_context(priv
, tmp
) {
1296 u32 possible_modes
=
1297 tmp
->interface_modes
| tmp
->exclusive_interface_modes
;
1300 /* On reset we need to add the same interface again */
1301 if (tmp
->vif
== vif
) {
1307 /* check if this busy context is exclusive */
1308 if (tmp
->exclusive_interface_modes
&
1309 BIT(tmp
->vif
->type
)) {
1316 if (!(possible_modes
& BIT(viftype
)))
1319 /* have maybe usable context w/o interface */
1329 vif_priv
->ctx
= ctx
;
1333 * In SNIFFER device type, the firmware reports the FCS to
1334 * the host, rather than snipping it off. Unfortunately,
1335 * mac80211 doesn't (yet) provide a per-packet flag for
1336 * this, so that we have to set the hardware flag based
1337 * on the interfaces added. As the monitor interface can
1338 * only be present by itself, and will be removed before
1339 * other interfaces are added, this is safe.
1341 if (vif
->type
== NL80211_IFTYPE_MONITOR
)
1342 priv
->hw
->flags
|= IEEE80211_HW_RX_INCLUDES_FCS
;
1344 priv
->hw
->flags
&= ~IEEE80211_HW_RX_INCLUDES_FCS
;
1346 err
= iwl_setup_interface(priv
, ctx
);
1351 priv
->iw_mode
= NL80211_IFTYPE_STATION
;
1353 mutex_unlock(&priv
->mutex
);
1355 IWL_DEBUG_MAC80211(priv
, "leave\n");
1359 static void iwl_teardown_interface(struct iwl_priv
*priv
,
1360 struct ieee80211_vif
*vif
,
1363 struct iwl_rxon_context
*ctx
= iwl_rxon_ctx_from_vif(vif
);
1365 lockdep_assert_held(&priv
->mutex
);
1367 if (priv
->scan_vif
== vif
) {
1368 iwl_scan_cancel_timeout(priv
, 200);
1369 iwl_force_scan_end(priv
);
1373 iwl_set_mode(priv
, ctx
);
1374 if (!ctx
->always_active
)
1375 ctx
->is_active
= false;
1379 * When removing the IBSS interface, overwrite the
1380 * BT traffic load with the stored one from the last
1381 * notification, if any. If this is a device that
1382 * doesn't implement this, this has no effect since
1383 * both values are the same and zero.
1385 if (vif
->type
== NL80211_IFTYPE_ADHOC
)
1386 priv
->bt_traffic_load
= priv
->last_bt_traffic_load
;
1389 static void iwlagn_mac_remove_interface(struct ieee80211_hw
*hw
,
1390 struct ieee80211_vif
*vif
)
1392 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1393 struct iwl_rxon_context
*ctx
= iwl_rxon_ctx_from_vif(vif
);
1395 IWL_DEBUG_MAC80211(priv
, "enter\n");
1397 mutex_lock(&priv
->mutex
);
1399 if (WARN_ON(ctx
->vif
!= vif
)) {
1400 struct iwl_rxon_context
*tmp
;
1401 IWL_ERR(priv
, "ctx->vif = %p, vif = %p\n", ctx
->vif
, vif
);
1402 for_each_context(priv
, tmp
)
1403 IWL_ERR(priv
, "\tID = %d:\tctx = %p\tctx->vif = %p\n",
1404 tmp
->ctxid
, tmp
, tmp
->vif
);
1408 iwl_teardown_interface(priv
, vif
, false);
1410 mutex_unlock(&priv
->mutex
);
1412 IWL_DEBUG_MAC80211(priv
, "leave\n");
1416 static int iwlagn_mac_change_interface(struct ieee80211_hw
*hw
,
1417 struct ieee80211_vif
*vif
,
1418 enum nl80211_iftype newtype
, bool newp2p
)
1420 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1421 struct iwl_rxon_context
*ctx
, *tmp
;
1422 enum nl80211_iftype newviftype
= newtype
;
1423 u32 interface_modes
;
1426 IWL_DEBUG_MAC80211(priv
, "enter\n");
1428 newtype
= ieee80211_iftype_p2p(newtype
, newp2p
);
1430 mutex_lock(&priv
->mutex
);
1432 ctx
= iwl_rxon_ctx_from_vif(vif
);
1435 * To simplify this code, only support changes on the
1436 * BSS context. The PAN context is usually reassigned
1437 * by creating/removing P2P interfaces anyway.
1439 if (ctx
->ctxid
!= IWL_RXON_CTX_BSS
) {
1444 if (!ctx
->vif
|| !iwl_is_ready_rf(priv
)) {
1446 * Huh? But wait ... this can maybe happen when
1447 * we're in the middle of a firmware restart!
1453 /* Check if the switch is supported in the same context */
1454 interface_modes
= ctx
->interface_modes
| ctx
->exclusive_interface_modes
;
1455 if (!(interface_modes
& BIT(newtype
))) {
1460 if (ctx
->exclusive_interface_modes
& BIT(newtype
)) {
1461 for_each_context(priv
, tmp
) {
1465 if (!tmp
->is_active
)
1469 * The current mode switch would be exclusive, but
1470 * another context is active ... refuse the switch.
1478 iwl_teardown_interface(priv
, vif
, true);
1479 vif
->type
= newviftype
;
1481 err
= iwl_setup_interface(priv
, ctx
);
1484 * We've switched internally, but submitting to the
1485 * device may have failed for some reason. Mask this
1486 * error, because otherwise mac80211 will not switch
1487 * (and set the interface type back) and we'll be
1488 * out of sync with it.
1493 mutex_unlock(&priv
->mutex
);
1494 IWL_DEBUG_MAC80211(priv
, "leave\n");
1499 static int iwlagn_mac_hw_scan(struct ieee80211_hw
*hw
,
1500 struct ieee80211_vif
*vif
,
1501 struct ieee80211_scan_request
*hw_req
)
1503 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1504 struct cfg80211_scan_request
*req
= &hw_req
->req
;
1507 IWL_DEBUG_MAC80211(priv
, "enter\n");
1509 if (req
->n_channels
== 0)
1512 mutex_lock(&priv
->mutex
);
1515 * If an internal scan is in progress, just set
1516 * up the scan_request as per above.
1518 if (priv
->scan_type
!= IWL_SCAN_NORMAL
) {
1519 IWL_DEBUG_SCAN(priv
,
1520 "SCAN request during internal scan - defer\n");
1521 priv
->scan_request
= req
;
1522 priv
->scan_vif
= vif
;
1525 priv
->scan_request
= req
;
1526 priv
->scan_vif
= vif
;
1528 * mac80211 will only ask for one band at a time
1529 * so using channels[0] here is ok
1531 ret
= iwl_scan_initiate(priv
, vif
, IWL_SCAN_NORMAL
,
1532 req
->channels
[0]->band
);
1534 priv
->scan_request
= NULL
;
1535 priv
->scan_vif
= NULL
;
1539 IWL_DEBUG_MAC80211(priv
, "leave\n");
1541 mutex_unlock(&priv
->mutex
);
1546 static void iwl_sta_modify_ps_wake(struct iwl_priv
*priv
, int sta_id
)
1548 struct iwl_addsta_cmd cmd
= {
1549 .mode
= STA_CONTROL_MODIFY_MSK
,
1550 .station_flags_msk
= STA_FLG_PWR_SAVE_MSK
,
1551 .sta
.sta_id
= sta_id
,
1554 iwl_send_add_sta(priv
, &cmd
, CMD_ASYNC
);
1557 static void iwlagn_mac_sta_notify(struct ieee80211_hw
*hw
,
1558 struct ieee80211_vif
*vif
,
1559 enum sta_notify_cmd cmd
,
1560 struct ieee80211_sta
*sta
)
1562 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1563 struct iwl_station_priv
*sta_priv
= (void *)sta
->drv_priv
;
1566 IWL_DEBUG_MAC80211(priv
, "enter\n");
1569 case STA_NOTIFY_SLEEP
:
1570 WARN_ON(!sta_priv
->client
);
1571 sta_priv
->asleep
= true;
1572 if (atomic_read(&sta_priv
->pending_frames
) > 0)
1573 ieee80211_sta_block_awake(hw
, sta
, true);
1575 case STA_NOTIFY_AWAKE
:
1576 WARN_ON(!sta_priv
->client
);
1577 if (!sta_priv
->asleep
)
1579 sta_priv
->asleep
= false;
1580 sta_id
= iwl_sta_id(sta
);
1581 if (sta_id
!= IWL_INVALID_STATION
)
1582 iwl_sta_modify_ps_wake(priv
, sta_id
);
1587 IWL_DEBUG_MAC80211(priv
, "leave\n");
1590 const struct ieee80211_ops iwlagn_hw_ops
= {
1591 .tx
= iwlagn_mac_tx
,
1592 .start
= iwlagn_mac_start
,
1593 .stop
= iwlagn_mac_stop
,
1594 #ifdef CONFIG_PM_SLEEP
1595 .suspend
= iwlagn_mac_suspend
,
1596 .resume
= iwlagn_mac_resume
,
1597 .set_wakeup
= iwlagn_mac_set_wakeup
,
1599 .add_interface
= iwlagn_mac_add_interface
,
1600 .remove_interface
= iwlagn_mac_remove_interface
,
1601 .change_interface
= iwlagn_mac_change_interface
,
1602 .config
= iwlagn_mac_config
,
1603 .configure_filter
= iwlagn_configure_filter
,
1604 .set_key
= iwlagn_mac_set_key
,
1605 .update_tkip_key
= iwlagn_mac_update_tkip_key
,
1606 .set_rekey_data
= iwlagn_mac_set_rekey_data
,
1607 .conf_tx
= iwlagn_mac_conf_tx
,
1608 .bss_info_changed
= iwlagn_bss_info_changed
,
1609 .ampdu_action
= iwlagn_mac_ampdu_action
,
1610 .hw_scan
= iwlagn_mac_hw_scan
,
1611 .sta_notify
= iwlagn_mac_sta_notify
,
1612 .sta_state
= iwlagn_mac_sta_state
,
1613 .channel_switch
= iwlagn_mac_channel_switch
,
1614 .flush
= iwlagn_mac_flush
,
1615 .tx_last_beacon
= iwlagn_mac_tx_last_beacon
,
1616 .rssi_callback
= iwlagn_mac_rssi_callback
,
1617 .set_tim
= iwlagn_mac_set_tim
,
1620 /* This function both allocates and initializes hw and priv. */
1621 struct ieee80211_hw
*iwl_alloc_all(void)
1623 struct iwl_priv
*priv
;
1624 struct iwl_op_mode
*op_mode
;
1625 /* mac80211 allocates memory for this device instance, including
1626 * space for this driver's private structure */
1627 struct ieee80211_hw
*hw
;
1629 hw
= ieee80211_alloc_hw(sizeof(struct iwl_priv
) +
1630 sizeof(struct iwl_op_mode
), &iwlagn_hw_ops
);
1635 priv
= IWL_OP_MODE_GET_DVM(op_mode
);