1 /******************************************************************************
3 * Copyright(c) 2003 - 2013 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/ieee80211_radiotap.h>
42 #include <net/mac80211.h>
44 #include <asm/div64.h>
47 #include "iwl-trans.h"
48 #include "iwl-op-mode.h"
49 #include "iwl-modparams.h"
55 /*****************************************************************************
57 * mac80211 entry point functions
59 *****************************************************************************/
61 static const struct ieee80211_iface_limit iwlagn_sta_ap_limits
[] = {
64 .types
= BIT(NL80211_IFTYPE_STATION
),
68 .types
= BIT(NL80211_IFTYPE_AP
),
72 static const struct ieee80211_iface_limit iwlagn_2sta_limits
[] = {
75 .types
= BIT(NL80211_IFTYPE_STATION
),
79 static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits
[] = {
82 .types
= BIT(NL80211_IFTYPE_STATION
),
86 .types
= BIT(NL80211_IFTYPE_P2P_GO
) |
87 BIT(NL80211_IFTYPE_AP
),
91 static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits
[] = {
94 .types
= BIT(NL80211_IFTYPE_STATION
),
98 .types
= BIT(NL80211_IFTYPE_P2P_CLIENT
),
102 static const struct ieee80211_iface_combination
103 iwlagn_iface_combinations_dualmode
[] = {
104 { .num_different_channels
= 1,
106 .beacon_int_infra_match
= true,
107 .limits
= iwlagn_sta_ap_limits
,
108 .n_limits
= ARRAY_SIZE(iwlagn_sta_ap_limits
),
110 { .num_different_channels
= 1,
112 .limits
= iwlagn_2sta_limits
,
113 .n_limits
= ARRAY_SIZE(iwlagn_2sta_limits
),
117 static const struct ieee80211_iface_combination
118 iwlagn_iface_combinations_p2p
[] = {
119 { .num_different_channels
= 1,
121 .beacon_int_infra_match
= true,
122 .limits
= iwlagn_p2p_sta_go_limits
,
123 .n_limits
= ARRAY_SIZE(iwlagn_p2p_sta_go_limits
),
125 { .num_different_channels
= 1,
127 .limits
= iwlagn_p2p_2sta_limits
,
128 .n_limits
= ARRAY_SIZE(iwlagn_p2p_2sta_limits
),
133 * Not a mac80211 entry point function, but it fits in with all the
134 * other mac80211 functions grouped here.
136 int iwlagn_mac_setup_register(struct iwl_priv
*priv
,
137 const struct iwl_ucode_capabilities
*capa
)
140 struct ieee80211_hw
*hw
= priv
->hw
;
141 struct iwl_rxon_context
*ctx
;
143 hw
->rate_control_algorithm
= "iwl-agn-rs";
145 /* Tell mac80211 our characteristics */
146 hw
->flags
= IEEE80211_HW_SIGNAL_DBM
|
147 IEEE80211_HW_AMPDU_AGGREGATION
|
148 IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC
|
149 IEEE80211_HW_SPECTRUM_MGMT
|
150 IEEE80211_HW_REPORTS_TX_ACK_STATUS
|
151 IEEE80211_HW_QUEUE_CONTROL
|
152 IEEE80211_HW_SUPPORTS_PS
|
153 IEEE80211_HW_SUPPORTS_DYNAMIC_PS
|
154 IEEE80211_HW_WANT_MONITOR_VIF
;
156 hw
->offchannel_tx_hw_queue
= IWL_AUX_QUEUE
;
157 hw
->radiotap_mcs_details
|= IEEE80211_RADIOTAP_MCS_HAVE_FMT
;
160 * Including the following line will crash some AP's. This
161 * workaround removes the stimulus which causes the crash until
162 * the AP software can be fixed.
163 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
166 if (priv
->nvm_data
->sku_cap_11n_enable
)
167 hw
->flags
|= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS
|
168 IEEE80211_HW_SUPPORTS_STATIC_SMPS
;
171 * Enable 11w if advertised by firmware and software crypto
172 * is not enabled (as the firmware will interpret some mgmt
173 * packets, so enabling it with software crypto isn't safe)
175 if (priv
->fw
->ucode_capa
.flags
& IWL_UCODE_TLV_FLAGS_MFP
&&
176 !iwlwifi_mod_params
.sw_crypto
)
177 hw
->flags
|= IEEE80211_HW_MFP_CAPABLE
;
179 hw
->sta_data_size
= sizeof(struct iwl_station_priv
);
180 hw
->vif_data_size
= sizeof(struct iwl_vif_priv
);
182 for_each_context(priv
, ctx
) {
183 hw
->wiphy
->interface_modes
|= ctx
->interface_modes
;
184 hw
->wiphy
->interface_modes
|= ctx
->exclusive_interface_modes
;
187 BUILD_BUG_ON(NUM_IWL_RXON_CTX
!= 2);
189 if (hw
->wiphy
->interface_modes
& BIT(NL80211_IFTYPE_P2P_CLIENT
)) {
190 hw
->wiphy
->iface_combinations
= iwlagn_iface_combinations_p2p
;
191 hw
->wiphy
->n_iface_combinations
=
192 ARRAY_SIZE(iwlagn_iface_combinations_p2p
);
193 } else if (hw
->wiphy
->interface_modes
& BIT(NL80211_IFTYPE_AP
)) {
194 hw
->wiphy
->iface_combinations
=
195 iwlagn_iface_combinations_dualmode
;
196 hw
->wiphy
->n_iface_combinations
=
197 ARRAY_SIZE(iwlagn_iface_combinations_dualmode
);
200 hw
->wiphy
->max_remain_on_channel_duration
= 500;
202 hw
->wiphy
->flags
|= WIPHY_FLAG_CUSTOM_REGULATORY
|
203 WIPHY_FLAG_DISABLE_BEACON_HINTS
|
206 #ifdef CONFIG_PM_SLEEP
207 if (priv
->fw
->img
[IWL_UCODE_WOWLAN
].sec
[0].len
&&
208 priv
->trans
->ops
->d3_suspend
&&
209 priv
->trans
->ops
->d3_resume
&&
210 device_can_wakeup(priv
->trans
->dev
)) {
211 hw
->wiphy
->wowlan
.flags
= WIPHY_WOWLAN_MAGIC_PKT
|
212 WIPHY_WOWLAN_DISCONNECT
|
213 WIPHY_WOWLAN_EAP_IDENTITY_REQ
|
214 WIPHY_WOWLAN_RFKILL_RELEASE
;
215 if (!iwlwifi_mod_params
.sw_crypto
)
216 hw
->wiphy
->wowlan
.flags
|=
217 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY
|
218 WIPHY_WOWLAN_GTK_REKEY_FAILURE
;
220 hw
->wiphy
->wowlan
.n_patterns
= IWLAGN_WOWLAN_MAX_PATTERNS
;
221 hw
->wiphy
->wowlan
.pattern_min_len
=
222 IWLAGN_WOWLAN_MIN_PATTERN_LEN
;
223 hw
->wiphy
->wowlan
.pattern_max_len
=
224 IWLAGN_WOWLAN_MAX_PATTERN_LEN
;
228 if (iwlwifi_mod_params
.power_save
)
229 hw
->wiphy
->flags
|= WIPHY_FLAG_PS_ON_BY_DEFAULT
;
231 hw
->wiphy
->flags
&= ~WIPHY_FLAG_PS_ON_BY_DEFAULT
;
233 hw
->wiphy
->max_scan_ssids
= PROBE_OPTION_MAX
;
234 /* we create the 802.11 header and a max-length SSID element */
235 hw
->wiphy
->max_scan_ie_len
= capa
->max_probe_length
- 24 - 34;
238 * We don't use all queues: 4 and 9 are unused and any
239 * aggregation queue gets mapped down to the AC queue.
241 hw
->queues
= IWLAGN_FIRST_AMPDU_QUEUE
;
243 hw
->max_listen_interval
= IWL_CONN_MAX_LISTEN_INTERVAL
;
245 if (priv
->nvm_data
->bands
[IEEE80211_BAND_2GHZ
].n_channels
)
246 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] =
247 &priv
->nvm_data
->bands
[IEEE80211_BAND_2GHZ
];
248 if (priv
->nvm_data
->bands
[IEEE80211_BAND_5GHZ
].n_channels
)
249 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] =
250 &priv
->nvm_data
->bands
[IEEE80211_BAND_5GHZ
];
252 hw
->wiphy
->hw_version
= priv
->trans
->hw_id
;
256 ret
= ieee80211_register_hw(priv
->hw
);
258 IWL_ERR(priv
, "Failed to register hw (error %d)\n", ret
);
262 priv
->mac80211_registered
= 1;
267 void iwlagn_mac_unregister(struct iwl_priv
*priv
)
269 if (!priv
->mac80211_registered
)
272 ieee80211_unregister_hw(priv
->hw
);
273 priv
->mac80211_registered
= 0;
276 static int __iwl_up(struct iwl_priv
*priv
)
278 struct iwl_rxon_context
*ctx
;
281 lockdep_assert_held(&priv
->mutex
);
283 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
284 IWL_WARN(priv
, "Exit pending; will not bring the NIC up\n");
288 for_each_context(priv
, ctx
) {
289 ret
= iwlagn_alloc_bcast_station(priv
, ctx
);
291 iwl_dealloc_bcast_stations(priv
);
296 ret
= iwl_run_init_ucode(priv
);
298 IWL_ERR(priv
, "Failed to run INIT ucode: %d\n", ret
);
302 ret
= iwl_load_ucode_wait_alive(priv
, IWL_UCODE_REGULAR
);
304 IWL_ERR(priv
, "Failed to start RT ucode: %d\n", ret
);
308 ret
= iwl_alive_start(priv
);
314 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
316 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
318 IWL_ERR(priv
, "Unable to initialize device.\n");
322 static int iwlagn_mac_start(struct ieee80211_hw
*hw
)
324 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
327 IWL_DEBUG_MAC80211(priv
, "enter\n");
329 /* we should be verifying the device is ready to be opened */
330 mutex_lock(&priv
->mutex
);
331 ret
= __iwl_up(priv
);
332 mutex_unlock(&priv
->mutex
);
336 IWL_DEBUG_INFO(priv
, "Start UP work done.\n");
338 /* Now we should be done, and the READY bit should be set. */
339 if (WARN_ON(!test_bit(STATUS_READY
, &priv
->status
)))
342 iwlagn_led_enable(priv
);
345 IWL_DEBUG_MAC80211(priv
, "leave\n");
349 static void iwlagn_mac_stop(struct ieee80211_hw
*hw
)
351 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
353 IWL_DEBUG_MAC80211(priv
, "enter\n");
360 mutex_lock(&priv
->mutex
);
362 mutex_unlock(&priv
->mutex
);
364 iwl_cancel_deferred_work(priv
);
366 flush_workqueue(priv
->workqueue
);
368 /* User space software may expect getting rfkill changes
369 * even if interface is down, trans->down will leave the RF
370 * kill interrupt enabled
372 iwl_trans_stop_hw(priv
->trans
, false);
374 IWL_DEBUG_MAC80211(priv
, "leave\n");
377 static void iwlagn_mac_set_rekey_data(struct ieee80211_hw
*hw
,
378 struct ieee80211_vif
*vif
,
379 struct cfg80211_gtk_rekey_data
*data
)
381 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
383 if (iwlwifi_mod_params
.sw_crypto
)
386 IWL_DEBUG_MAC80211(priv
, "enter\n");
387 mutex_lock(&priv
->mutex
);
389 if (priv
->contexts
[IWL_RXON_CTX_BSS
].vif
!= vif
)
392 memcpy(priv
->kek
, data
->kek
, NL80211_KEK_LEN
);
393 memcpy(priv
->kck
, data
->kck
, NL80211_KCK_LEN
);
395 cpu_to_le64(be64_to_cpup((__be64
*)&data
->replay_ctr
));
396 priv
->have_rekey_data
= true;
399 mutex_unlock(&priv
->mutex
);
400 IWL_DEBUG_MAC80211(priv
, "leave\n");
403 #ifdef CONFIG_PM_SLEEP
405 static int iwlagn_mac_suspend(struct ieee80211_hw
*hw
,
406 struct cfg80211_wowlan
*wowlan
)
408 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
409 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
412 if (WARN_ON(!wowlan
))
415 IWL_DEBUG_MAC80211(priv
, "enter\n");
416 mutex_lock(&priv
->mutex
);
418 /* Don't attempt WoWLAN when not associated, tear down instead. */
419 if (!ctx
->vif
|| ctx
->vif
->type
!= NL80211_IFTYPE_STATION
||
420 !iwl_is_associated_ctx(ctx
)) {
425 ret
= iwlagn_suspend(priv
, wowlan
);
429 iwl_trans_d3_suspend(priv
->trans
);
434 priv
->wowlan
= false;
435 iwlagn_prepare_restart(priv
);
436 ieee80211_restart_hw(priv
->hw
);
438 mutex_unlock(&priv
->mutex
);
439 IWL_DEBUG_MAC80211(priv
, "leave\n");
444 struct iwl_resume_data
{
445 struct iwl_priv
*priv
;
446 struct iwlagn_wowlan_status
*cmd
;
450 static bool iwl_resume_status_fn(struct iwl_notif_wait_data
*notif_wait
,
451 struct iwl_rx_packet
*pkt
, void *data
)
453 struct iwl_resume_data
*resume_data
= data
;
454 struct iwl_priv
*priv
= resume_data
->priv
;
455 u32 len
= le32_to_cpu(pkt
->len_n_flags
) & FH_RSCSR_FRAME_SIZE_MSK
;
457 if (len
- 4 != sizeof(*resume_data
->cmd
)) {
458 IWL_ERR(priv
, "rx wrong size data\n");
461 memcpy(resume_data
->cmd
, pkt
->data
, sizeof(*resume_data
->cmd
));
462 resume_data
->valid
= true;
467 static int iwlagn_mac_resume(struct ieee80211_hw
*hw
)
469 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
470 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
471 struct ieee80211_vif
*vif
;
474 enum iwl_d3_status d3_status
;
475 struct error_table_start
{
476 /* cf. struct iwl_error_event_table */
480 struct iwl_notification_wait status_wait
;
481 static const u8 status_cmd
[] = {
482 REPLY_WOWLAN_GET_STATUS
,
484 struct iwlagn_wowlan_status status_data
= {};
485 struct iwl_resume_data resume_data
= {
490 struct cfg80211_wowlan_wakeup wakeup
= {
493 #ifdef CONFIG_IWLWIFI_DEBUGFS
494 const struct fw_img
*img
;
497 IWL_DEBUG_MAC80211(priv
, "enter\n");
498 mutex_lock(&priv
->mutex
);
500 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
503 ret
= iwl_trans_d3_resume(priv
->trans
, &d3_status
);
507 if (d3_status
!= IWL_D3_STATUS_ALIVE
) {
508 IWL_INFO(priv
, "Device was reset during suspend\n");
512 base
= priv
->device_pointers
.error_event_table
;
513 if (!iwlagn_hw_valid_rtc_data_addr(base
)) {
514 IWL_WARN(priv
, "Invalid error table during resume!\n");
518 iwl_trans_read_mem_bytes(priv
->trans
, base
,
519 &err_info
, sizeof(err_info
));
521 if (err_info
.valid
) {
522 IWL_INFO(priv
, "error table is valid (%d, 0x%x)\n",
523 err_info
.valid
, err_info
.error_id
);
524 if (err_info
.error_id
== RF_KILL_INDICATOR_FOR_WOWLAN
) {
525 wakeup
.rfkill_release
= true;
526 ieee80211_report_wowlan_wakeup(vif
, &wakeup
,
532 #ifdef CONFIG_IWLWIFI_DEBUGFS
533 img
= &priv
->fw
->img
[IWL_UCODE_WOWLAN
];
534 if (!priv
->wowlan_sram
)
536 kzalloc(img
->sec
[IWL_UCODE_SECTION_DATA
].len
,
539 if (priv
->wowlan_sram
)
540 iwl_trans_read_mem(priv
->trans
, 0x800000,
542 img
->sec
[IWL_UCODE_SECTION_DATA
].len
/ 4);
546 * This is very strange. The GET_STATUS command is sent but the device
547 * doesn't reply properly, it seems it doesn't close the RBD so one is
548 * always left open ... As a result, we need to send another command
549 * and have to reset the driver afterwards. As we need to switch to
550 * runtime firmware again that'll happen.
553 iwl_init_notification_wait(&priv
->notif_wait
, &status_wait
, status_cmd
,
554 ARRAY_SIZE(status_cmd
), iwl_resume_status_fn
,
557 iwl_dvm_send_cmd_pdu(priv
, REPLY_WOWLAN_GET_STATUS
, CMD_ASYNC
, 0, NULL
);
558 iwl_dvm_send_cmd_pdu(priv
, REPLY_ECHO
, CMD_ASYNC
, 0, NULL
);
559 /* an RBD is left open in the firmware now! */
561 ret
= iwl_wait_notification(&priv
->notif_wait
, &status_wait
, HZ
/5);
565 if (resume_data
.valid
&& priv
->contexts
[IWL_RXON_CTX_BSS
].vif
) {
566 u32 reasons
= le32_to_cpu(status_data
.wakeup_reason
);
567 struct cfg80211_wowlan_wakeup
*wakeup_report
;
569 IWL_INFO(priv
, "WoWLAN wakeup reason(s): 0x%.8x\n", reasons
);
572 if (reasons
& IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET
)
573 wakeup
.magic_pkt
= true;
574 if (reasons
& IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH
)
575 wakeup
.pattern_idx
= status_data
.pattern_number
;
576 if (reasons
& (IWLAGN_WOWLAN_WAKEUP_BEACON_MISS
|
577 IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE
))
578 wakeup
.disconnect
= true;
579 if (reasons
& IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL
)
580 wakeup
.gtk_rekey_failure
= true;
581 if (reasons
& IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ
)
582 wakeup
.eap_identity_req
= true;
583 if (reasons
& IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE
)
584 wakeup
.four_way_handshake
= true;
585 wakeup_report
= &wakeup
;
587 wakeup_report
= NULL
;
590 ieee80211_report_wowlan_wakeup(vif
, wakeup_report
, GFP_KERNEL
);
593 priv
->wowlan
= false;
595 iwlagn_prepare_restart(priv
);
597 memset((void *)&ctx
->active
, 0, sizeof(ctx
->active
));
598 iwl_connection_init_rx_config(priv
, ctx
);
599 iwlagn_set_rxon_chain(priv
, ctx
);
602 mutex_unlock(&priv
->mutex
);
603 IWL_DEBUG_MAC80211(priv
, "leave\n");
605 ieee80211_resume_disconnect(vif
);
610 static void iwlagn_mac_set_wakeup(struct ieee80211_hw
*hw
, bool enabled
)
612 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
614 device_set_wakeup_enable(priv
->trans
->dev
, enabled
);
618 static void iwlagn_mac_tx(struct ieee80211_hw
*hw
,
619 struct ieee80211_tx_control
*control
,
622 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
624 if (iwlagn_tx_skb(priv
, control
->sta
, skb
))
625 ieee80211_free_txskb(hw
, skb
);
628 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw
*hw
,
629 struct ieee80211_vif
*vif
,
630 struct ieee80211_key_conf
*keyconf
,
631 struct ieee80211_sta
*sta
,
632 u32 iv32
, u16
*phase1key
)
634 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
636 iwl_update_tkip_key(priv
, vif
, keyconf
, sta
, iv32
, phase1key
);
639 static int iwlagn_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
640 struct ieee80211_vif
*vif
,
641 struct ieee80211_sta
*sta
,
642 struct ieee80211_key_conf
*key
)
644 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
645 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
646 struct iwl_rxon_context
*ctx
= vif_priv
->ctx
;
648 bool is_default_wep_key
= false;
650 IWL_DEBUG_MAC80211(priv
, "enter\n");
652 if (iwlwifi_mod_params
.sw_crypto
) {
653 IWL_DEBUG_MAC80211(priv
, "leave - hwcrypto disabled\n");
657 switch (key
->cipher
) {
658 case WLAN_CIPHER_SUITE_TKIP
:
659 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_MMIC
;
661 case WLAN_CIPHER_SUITE_CCMP
:
662 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
669 * We could program these keys into the hardware as well, but we
670 * don't expect much multicast traffic in IBSS and having keys
671 * for more stations is probably more useful.
673 * Mark key TX-only and return 0.
675 if (vif
->type
== NL80211_IFTYPE_ADHOC
&&
676 !(key
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
)) {
677 key
->hw_key_idx
= WEP_INVALID_OFFSET
;
681 /* If they key was TX-only, accept deletion */
682 if (cmd
== DISABLE_KEY
&& key
->hw_key_idx
== WEP_INVALID_OFFSET
)
685 mutex_lock(&priv
->mutex
);
686 iwl_scan_cancel_timeout(priv
, 100);
688 BUILD_BUG_ON(WEP_INVALID_OFFSET
== IWLAGN_HW_KEY_DEFAULT
);
691 * If we are getting WEP group key and we didn't receive any key mapping
692 * so far, we are in legacy wep mode (group key only), otherwise we are
694 * In legacy wep mode, we use another host command to the uCode.
696 if ((key
->cipher
== WLAN_CIPHER_SUITE_WEP40
||
697 key
->cipher
== WLAN_CIPHER_SUITE_WEP104
) && !sta
) {
699 is_default_wep_key
= !ctx
->key_mapping_keys
;
702 key
->hw_key_idx
== IWLAGN_HW_KEY_DEFAULT
;
708 if (is_default_wep_key
) {
709 ret
= iwl_set_default_wep_key(priv
, vif_priv
->ctx
, key
);
712 ret
= iwl_set_dynamic_key(priv
, vif_priv
->ctx
, key
, sta
);
715 * can't add key for RX, but we don't need it
716 * in the device for TX so still return 0
719 key
->hw_key_idx
= WEP_INVALID_OFFSET
;
722 IWL_DEBUG_MAC80211(priv
, "enable hwcrypto key\n");
725 if (is_default_wep_key
)
726 ret
= iwl_remove_default_wep_key(priv
, ctx
, key
);
728 ret
= iwl_remove_dynamic_key(priv
, ctx
, key
, sta
);
730 IWL_DEBUG_MAC80211(priv
, "disable hwcrypto key\n");
736 mutex_unlock(&priv
->mutex
);
737 IWL_DEBUG_MAC80211(priv
, "leave\n");
742 static int iwlagn_mac_ampdu_action(struct ieee80211_hw
*hw
,
743 struct ieee80211_vif
*vif
,
744 enum ieee80211_ampdu_mlme_action action
,
745 struct ieee80211_sta
*sta
, u16 tid
, u16
*ssn
,
748 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
750 struct iwl_station_priv
*sta_priv
= (void *) sta
->drv_priv
;
752 IWL_DEBUG_HT(priv
, "A-MPDU action on addr %pM tid %d\n",
755 if (!(priv
->nvm_data
->sku_cap_11n_enable
))
758 IWL_DEBUG_MAC80211(priv
, "enter\n");
759 mutex_lock(&priv
->mutex
);
762 case IEEE80211_AMPDU_RX_START
:
763 if (iwlwifi_mod_params
.disable_11n
& IWL_DISABLE_HT_RXAGG
)
765 IWL_DEBUG_HT(priv
, "start Rx\n");
766 ret
= iwl_sta_rx_agg_start(priv
, sta
, tid
, *ssn
);
768 case IEEE80211_AMPDU_RX_STOP
:
769 IWL_DEBUG_HT(priv
, "stop Rx\n");
770 ret
= iwl_sta_rx_agg_stop(priv
, sta
, tid
);
772 case IEEE80211_AMPDU_TX_START
:
773 if (!priv
->trans
->ops
->txq_enable
)
775 if (iwlwifi_mod_params
.disable_11n
& IWL_DISABLE_HT_TXAGG
)
777 IWL_DEBUG_HT(priv
, "start Tx\n");
778 ret
= iwlagn_tx_agg_start(priv
, vif
, sta
, tid
, ssn
);
780 case IEEE80211_AMPDU_TX_STOP_CONT
:
781 case IEEE80211_AMPDU_TX_STOP_FLUSH
:
782 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT
:
783 IWL_DEBUG_HT(priv
, "stop Tx\n");
784 ret
= iwlagn_tx_agg_stop(priv
, vif
, sta
, tid
);
785 if ((ret
== 0) && (priv
->agg_tids_count
> 0)) {
786 priv
->agg_tids_count
--;
787 IWL_DEBUG_HT(priv
, "priv->agg_tids_count = %u\n",
788 priv
->agg_tids_count
);
790 if (!priv
->agg_tids_count
&&
791 priv
->hw_params
.use_rts_for_aggregation
) {
793 * switch off RTS/CTS if it was previously enabled
795 sta_priv
->lq_sta
.lq
.general_params
.flags
&=
796 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK
;
797 iwl_send_lq_cmd(priv
, iwl_rxon_ctx_from_vif(vif
),
798 &sta_priv
->lq_sta
.lq
, CMD_ASYNC
, false);
801 case IEEE80211_AMPDU_TX_OPERATIONAL
:
802 ret
= iwlagn_tx_agg_oper(priv
, vif
, sta
, tid
, buf_size
);
805 mutex_unlock(&priv
->mutex
);
806 IWL_DEBUG_MAC80211(priv
, "leave\n");
810 static int iwlagn_mac_sta_add(struct ieee80211_hw
*hw
,
811 struct ieee80211_vif
*vif
,
812 struct ieee80211_sta
*sta
)
814 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
815 struct iwl_station_priv
*sta_priv
= (void *)sta
->drv_priv
;
816 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
817 bool is_ap
= vif
->type
== NL80211_IFTYPE_STATION
;
821 IWL_DEBUG_INFO(priv
, "proceeding to add station %pM\n",
823 sta_priv
->sta_id
= IWL_INVALID_STATION
;
825 atomic_set(&sta_priv
->pending_frames
, 0);
826 if (vif
->type
== NL80211_IFTYPE_AP
)
827 sta_priv
->client
= true;
829 ret
= iwl_add_station_common(priv
, vif_priv
->ctx
, sta
->addr
,
830 is_ap
, sta
, &sta_id
);
832 IWL_ERR(priv
, "Unable to add station %pM (%d)\n",
834 /* Should we return success if return code is EEXIST ? */
838 sta_priv
->sta_id
= sta_id
;
843 static int iwlagn_mac_sta_remove(struct ieee80211_hw
*hw
,
844 struct ieee80211_vif
*vif
,
845 struct ieee80211_sta
*sta
)
847 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
848 struct iwl_station_priv
*sta_priv
= (void *)sta
->drv_priv
;
851 IWL_DEBUG_INFO(priv
, "proceeding to remove station %pM\n", sta
->addr
);
853 if (vif
->type
== NL80211_IFTYPE_STATION
) {
855 * Station will be removed from device when the RXON
856 * is set to unassociated -- just deactivate it here
857 * to avoid re-programming it.
860 iwl_deactivate_station(priv
, sta_priv
->sta_id
, sta
->addr
);
862 ret
= iwl_remove_station(priv
, sta_priv
->sta_id
, sta
->addr
);
864 IWL_DEBUG_QUIET_RFKILL(priv
,
865 "Error removing station %pM\n", sta
->addr
);
870 static int iwlagn_mac_sta_state(struct ieee80211_hw
*hw
,
871 struct ieee80211_vif
*vif
,
872 struct ieee80211_sta
*sta
,
873 enum ieee80211_sta_state old_state
,
874 enum ieee80211_sta_state new_state
)
876 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
877 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
879 NONE
, ADD
, REMOVE
, HT_RATE_INIT
, ADD_RATE_INIT
,
883 IWL_DEBUG_MAC80211(priv
, "station %pM state change %d->%d\n",
884 sta
->addr
, old_state
, new_state
);
886 mutex_lock(&priv
->mutex
);
887 if (vif
->type
== NL80211_IFTYPE_STATION
) {
888 if (old_state
== IEEE80211_STA_NOTEXIST
&&
889 new_state
== IEEE80211_STA_NONE
)
891 else if (old_state
== IEEE80211_STA_NONE
&&
892 new_state
== IEEE80211_STA_NOTEXIST
)
894 else if (old_state
== IEEE80211_STA_AUTH
&&
895 new_state
== IEEE80211_STA_ASSOC
)
898 if (old_state
== IEEE80211_STA_AUTH
&&
899 new_state
== IEEE80211_STA_ASSOC
)
901 else if (old_state
== IEEE80211_STA_ASSOC
&&
902 new_state
== IEEE80211_STA_AUTH
)
908 ret
= iwlagn_mac_sta_add(hw
, vif
, sta
);
912 * Clear the in-progress flag, the AP station entry was added
913 * but we'll initialize LQ only when we've associated (which
914 * would also clear the in-progress flag). This is necessary
915 * in case we never initialize LQ because association fails.
917 spin_lock_bh(&priv
->sta_lock
);
918 priv
->stations
[iwl_sta_id(sta
)].used
&=
919 ~IWL_STA_UCODE_INPROGRESS
;
920 spin_unlock_bh(&priv
->sta_lock
);
923 ret
= iwlagn_mac_sta_remove(hw
, vif
, sta
);
926 ret
= iwlagn_mac_sta_add(hw
, vif
, sta
);
929 /* Initialize rate scaling */
931 "Initializing rate scaling for station %pM\n",
933 iwl_rs_rate_init(priv
, sta
, iwl_sta_id(sta
));
937 /* Initialize rate scaling */
938 ret
= iwl_sta_update_ht(priv
, vif_priv
->ctx
, sta
);
942 "Initializing rate scaling for station %pM\n",
944 iwl_rs_rate_init(priv
, sta
, iwl_sta_id(sta
));
953 * mac80211 might WARN if we fail, but due the way we
954 * (badly) handle hard rfkill, we might fail here
956 if (iwl_is_rfkill(priv
))
959 mutex_unlock(&priv
->mutex
);
960 IWL_DEBUG_MAC80211(priv
, "leave\n");
965 static void iwlagn_mac_channel_switch(struct ieee80211_hw
*hw
,
966 struct ieee80211_channel_switch
*ch_switch
)
968 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
969 struct ieee80211_conf
*conf
= &hw
->conf
;
970 struct ieee80211_channel
*channel
= ch_switch
->channel
;
971 struct iwl_ht_config
*ht_conf
= &priv
->current_ht_config
;
974 * When we add support for multiple interfaces, we need to
975 * revisit this. The channel switch command in the device
976 * only affects the BSS context, but what does that really
977 * mean? And what if we get a CSA on the second interface?
978 * This needs a lot of work.
980 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
983 IWL_DEBUG_MAC80211(priv
, "enter\n");
985 mutex_lock(&priv
->mutex
);
987 if (iwl_is_rfkill(priv
))
990 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
) ||
991 test_bit(STATUS_SCANNING
, &priv
->status
) ||
992 test_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->status
))
995 if (!iwl_is_associated_ctx(ctx
))
998 if (!priv
->lib
->set_channel_switch
)
1001 ch
= channel
->hw_value
;
1002 if (le16_to_cpu(ctx
->active
.channel
) == ch
)
1005 priv
->current_ht_config
.smps
= conf
->smps_mode
;
1007 /* Configure HT40 channels */
1008 ctx
->ht
.enabled
= conf_is_ht(conf
);
1009 if (ctx
->ht
.enabled
)
1010 iwlagn_config_ht40(conf
, ctx
);
1012 ctx
->ht
.is_40mhz
= false;
1014 if ((le16_to_cpu(ctx
->staging
.channel
) != ch
))
1015 ctx
->staging
.flags
= 0;
1017 iwl_set_rxon_channel(priv
, channel
, ctx
);
1018 iwl_set_rxon_ht(priv
, ht_conf
);
1019 iwl_set_flags_for_band(priv
, ctx
, channel
->band
, ctx
->vif
);
1022 * at this point, staging_rxon has the
1023 * configuration for channel switch
1025 set_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->status
);
1026 priv
->switch_channel
= cpu_to_le16(ch
);
1027 if (priv
->lib
->set_channel_switch(priv
, ch_switch
)) {
1028 clear_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->status
);
1029 priv
->switch_channel
= 0;
1030 ieee80211_chswitch_done(ctx
->vif
, false);
1034 mutex_unlock(&priv
->mutex
);
1035 IWL_DEBUG_MAC80211(priv
, "leave\n");
1038 void iwl_chswitch_done(struct iwl_priv
*priv
, bool is_success
)
1042 * See iwlagn_mac_channel_switch.
1044 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
1046 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1049 if (test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->status
))
1050 ieee80211_chswitch_done(ctx
->vif
, is_success
);
1053 static void iwlagn_configure_filter(struct ieee80211_hw
*hw
,
1054 unsigned int changed_flags
,
1055 unsigned int *total_flags
,
1058 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1059 __le32 filter_or
= 0, filter_nand
= 0;
1060 struct iwl_rxon_context
*ctx
;
1062 #define CHK(test, flag) do { \
1063 if (*total_flags & (test)) \
1064 filter_or |= (flag); \
1066 filter_nand |= (flag); \
1069 IWL_DEBUG_MAC80211(priv
, "Enter: changed: 0x%x, total: 0x%x\n",
1070 changed_flags
, *total_flags
);
1072 CHK(FIF_OTHER_BSS
| FIF_PROMISC_IN_BSS
, RXON_FILTER_PROMISC_MSK
);
1073 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
1074 CHK(FIF_CONTROL
, RXON_FILTER_CTL2HOST_MSK
| RXON_FILTER_PROMISC_MSK
);
1075 CHK(FIF_BCN_PRBRESP_PROMISC
, RXON_FILTER_BCON_AWARE_MSK
);
1079 mutex_lock(&priv
->mutex
);
1081 for_each_context(priv
, ctx
) {
1082 ctx
->staging
.filter_flags
&= ~filter_nand
;
1083 ctx
->staging
.filter_flags
|= filter_or
;
1086 * Not committing directly because hardware can perform a scan,
1087 * but we'll eventually commit the filter flags change anyway.
1091 mutex_unlock(&priv
->mutex
);
1094 * Receiving all multicast frames is always enabled by the
1095 * default flags setup in iwl_connection_init_rx_config()
1096 * since we currently do not support programming multicast
1097 * filters into the device.
1099 *total_flags
&= FIF_OTHER_BSS
| FIF_ALLMULTI
| FIF_PROMISC_IN_BSS
|
1100 FIF_BCN_PRBRESP_PROMISC
| FIF_CONTROL
;
1103 static void iwlagn_mac_flush(struct ieee80211_hw
*hw
, bool drop
)
1105 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1107 mutex_lock(&priv
->mutex
);
1108 IWL_DEBUG_MAC80211(priv
, "enter\n");
1110 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
1111 IWL_DEBUG_TX(priv
, "Aborting flush due to device shutdown\n");
1114 if (iwl_is_rfkill(priv
)) {
1115 IWL_DEBUG_TX(priv
, "Aborting flush due to RF Kill\n");
1120 * mac80211 will not push any more frames for transmit
1121 * until the flush is completed
1124 IWL_DEBUG_MAC80211(priv
, "send flush command\n");
1125 if (iwlagn_txfifo_flush(priv
)) {
1126 IWL_ERR(priv
, "flush request fail\n");
1130 IWL_DEBUG_MAC80211(priv
, "wait transmit/flush all frames\n");
1131 iwl_trans_wait_tx_queue_empty(priv
->trans
);
1133 mutex_unlock(&priv
->mutex
);
1134 IWL_DEBUG_MAC80211(priv
, "leave\n");
1137 static int iwlagn_mac_remain_on_channel(struct ieee80211_hw
*hw
,
1138 struct ieee80211_vif
*vif
,
1139 struct ieee80211_channel
*channel
,
1142 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1143 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_PAN
];
1146 if (!(priv
->valid_contexts
& BIT(IWL_RXON_CTX_PAN
)))
1149 if (!(ctx
->interface_modes
& BIT(NL80211_IFTYPE_P2P_CLIENT
)))
1152 IWL_DEBUG_MAC80211(priv
, "enter\n");
1153 mutex_lock(&priv
->mutex
);
1155 if (test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
1156 /* mac80211 should not scan while ROC or ROC while scanning */
1157 if (WARN_ON_ONCE(priv
->scan_type
!= IWL_SCAN_RADIO_RESET
)) {
1162 iwl_scan_cancel_timeout(priv
, 100);
1164 if (test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
1170 priv
->hw_roc_channel
= channel
;
1171 /* convert from ms to TU */
1172 priv
->hw_roc_duration
= DIV_ROUND_UP(1000 * duration
, 1024);
1173 priv
->hw_roc_start_notified
= false;
1174 cancel_delayed_work(&priv
->hw_roc_disable_work
);
1176 if (!ctx
->is_active
) {
1177 static const struct iwl_qos_info default_qos_data
= {
1180 .cw_min
= cpu_to_le16(3),
1181 .cw_max
= cpu_to_le16(7),
1183 .edca_txop
= cpu_to_le16(1504),
1186 .cw_min
= cpu_to_le16(7),
1187 .cw_max
= cpu_to_le16(15),
1189 .edca_txop
= cpu_to_le16(3008),
1192 .cw_min
= cpu_to_le16(15),
1193 .cw_max
= cpu_to_le16(1023),
1197 .cw_min
= cpu_to_le16(15),
1198 .cw_max
= cpu_to_le16(1023),
1204 ctx
->is_active
= true;
1205 ctx
->qos_data
= default_qos_data
;
1206 ctx
->staging
.dev_type
= RXON_DEV_TYPE_P2P
;
1207 memcpy(ctx
->staging
.node_addr
,
1208 priv
->contexts
[IWL_RXON_CTX_BSS
].staging
.node_addr
,
1210 memcpy(ctx
->staging
.bssid_addr
,
1211 priv
->contexts
[IWL_RXON_CTX_BSS
].staging
.node_addr
,
1213 err
= iwlagn_commit_rxon(priv
, ctx
);
1216 ctx
->staging
.filter_flags
|= RXON_FILTER_ASSOC_MSK
|
1217 RXON_FILTER_PROMISC_MSK
|
1218 RXON_FILTER_CTL2HOST_MSK
;
1220 err
= iwlagn_commit_rxon(priv
, ctx
);
1222 iwlagn_disable_roc(priv
);
1225 priv
->hw_roc_setup
= true;
1228 err
= iwl_scan_initiate(priv
, ctx
->vif
, IWL_SCAN_ROC
, channel
->band
);
1230 iwlagn_disable_roc(priv
);
1233 mutex_unlock(&priv
->mutex
);
1234 IWL_DEBUG_MAC80211(priv
, "leave\n");
1239 static int iwlagn_mac_cancel_remain_on_channel(struct ieee80211_hw
*hw
)
1241 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1243 if (!(priv
->valid_contexts
& BIT(IWL_RXON_CTX_PAN
)))
1246 IWL_DEBUG_MAC80211(priv
, "enter\n");
1247 mutex_lock(&priv
->mutex
);
1248 iwl_scan_cancel_timeout(priv
, priv
->hw_roc_duration
);
1249 iwlagn_disable_roc(priv
);
1250 mutex_unlock(&priv
->mutex
);
1251 IWL_DEBUG_MAC80211(priv
, "leave\n");
1256 static void iwlagn_mac_rssi_callback(struct ieee80211_hw
*hw
,
1257 struct ieee80211_vif
*vif
,
1258 enum ieee80211_rssi_event rssi_event
)
1260 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1262 IWL_DEBUG_MAC80211(priv
, "enter\n");
1263 mutex_lock(&priv
->mutex
);
1265 if (priv
->cfg
->bt_params
&&
1266 priv
->cfg
->bt_params
->advanced_bt_coexist
) {
1267 if (rssi_event
== RSSI_EVENT_LOW
)
1268 priv
->bt_enable_pspoll
= true;
1269 else if (rssi_event
== RSSI_EVENT_HIGH
)
1270 priv
->bt_enable_pspoll
= false;
1272 iwlagn_send_advance_bt_config(priv
);
1274 IWL_DEBUG_MAC80211(priv
, "Advanced BT coex disabled,"
1275 "ignoring RSSI callback\n");
1278 mutex_unlock(&priv
->mutex
);
1279 IWL_DEBUG_MAC80211(priv
, "leave\n");
1282 static int iwlagn_mac_set_tim(struct ieee80211_hw
*hw
,
1283 struct ieee80211_sta
*sta
, bool set
)
1285 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1287 queue_work(priv
->workqueue
, &priv
->beacon_update
);
1292 static int iwlagn_mac_conf_tx(struct ieee80211_hw
*hw
,
1293 struct ieee80211_vif
*vif
, u16 queue
,
1294 const struct ieee80211_tx_queue_params
*params
)
1296 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1297 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
1298 struct iwl_rxon_context
*ctx
= vif_priv
->ctx
;
1304 IWL_DEBUG_MAC80211(priv
, "enter\n");
1306 if (!iwl_is_ready_rf(priv
)) {
1307 IWL_DEBUG_MAC80211(priv
, "leave - RF not ready\n");
1311 if (queue
>= AC_NUM
) {
1312 IWL_DEBUG_MAC80211(priv
, "leave - queue >= AC_NUM %d\n", queue
);
1316 q
= AC_NUM
- 1 - queue
;
1318 mutex_lock(&priv
->mutex
);
1320 ctx
->qos_data
.def_qos_parm
.ac
[q
].cw_min
=
1321 cpu_to_le16(params
->cw_min
);
1322 ctx
->qos_data
.def_qos_parm
.ac
[q
].cw_max
=
1323 cpu_to_le16(params
->cw_max
);
1324 ctx
->qos_data
.def_qos_parm
.ac
[q
].aifsn
= params
->aifs
;
1325 ctx
->qos_data
.def_qos_parm
.ac
[q
].edca_txop
=
1326 cpu_to_le16((params
->txop
* 32));
1328 ctx
->qos_data
.def_qos_parm
.ac
[q
].reserved1
= 0;
1330 mutex_unlock(&priv
->mutex
);
1332 IWL_DEBUG_MAC80211(priv
, "leave\n");
1336 static int iwlagn_mac_tx_last_beacon(struct ieee80211_hw
*hw
)
1338 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1340 return priv
->ibss_manager
== IWL_IBSS_MANAGER
;
1343 static int iwl_set_mode(struct iwl_priv
*priv
, struct iwl_rxon_context
*ctx
)
1345 iwl_connection_init_rx_config(priv
, ctx
);
1347 iwlagn_set_rxon_chain(priv
, ctx
);
1349 return iwlagn_commit_rxon(priv
, ctx
);
1352 static int iwl_setup_interface(struct iwl_priv
*priv
,
1353 struct iwl_rxon_context
*ctx
)
1355 struct ieee80211_vif
*vif
= ctx
->vif
;
1358 lockdep_assert_held(&priv
->mutex
);
1361 * This variable will be correct only when there's just
1362 * a single context, but all code using it is for hardware
1363 * that supports only one context.
1365 priv
->iw_mode
= vif
->type
;
1367 ctx
->is_active
= true;
1369 err
= iwl_set_mode(priv
, ctx
);
1371 if (!ctx
->always_active
)
1372 ctx
->is_active
= false;
1376 if (priv
->cfg
->bt_params
&& priv
->cfg
->bt_params
->advanced_bt_coexist
&&
1377 vif
->type
== NL80211_IFTYPE_ADHOC
) {
1379 * pretend to have high BT traffic as long as we
1380 * are operating in IBSS mode, as this will cause
1381 * the rate scaling etc. to behave as intended.
1383 priv
->bt_traffic_load
= IWL_BT_COEX_TRAFFIC_LOAD_HIGH
;
1386 /* set up queue mappings */
1387 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
1388 vif
->hw_queue
[ac
] = ctx
->ac_to_queue
[ac
];
1390 if (vif
->type
== NL80211_IFTYPE_AP
)
1391 vif
->cab_queue
= ctx
->mcast_queue
;
1393 vif
->cab_queue
= IEEE80211_INVAL_HW_QUEUE
;
1398 static int iwlagn_mac_add_interface(struct ieee80211_hw
*hw
,
1399 struct ieee80211_vif
*vif
)
1401 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1402 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
1403 struct iwl_rxon_context
*tmp
, *ctx
= NULL
;
1405 enum nl80211_iftype viftype
= ieee80211_vif_type_p2p(vif
);
1408 IWL_DEBUG_MAC80211(priv
, "enter: type %d, addr %pM\n",
1409 viftype
, vif
->addr
);
1411 cancel_delayed_work_sync(&priv
->hw_roc_disable_work
);
1413 mutex_lock(&priv
->mutex
);
1415 iwlagn_disable_roc(priv
);
1417 if (!iwl_is_ready_rf(priv
)) {
1418 IWL_WARN(priv
, "Try to add interface when device not ready\n");
1423 for_each_context(priv
, tmp
) {
1424 u32 possible_modes
=
1425 tmp
->interface_modes
| tmp
->exclusive_interface_modes
;
1428 /* On reset we need to add the same interface again */
1429 if (tmp
->vif
== vif
) {
1435 /* check if this busy context is exclusive */
1436 if (tmp
->exclusive_interface_modes
&
1437 BIT(tmp
->vif
->type
)) {
1444 if (!(possible_modes
& BIT(viftype
)))
1447 /* have maybe usable context w/o interface */
1457 vif_priv
->ctx
= ctx
;
1461 * In SNIFFER device type, the firmware reports the FCS to
1462 * the host, rather than snipping it off. Unfortunately,
1463 * mac80211 doesn't (yet) provide a per-packet flag for
1464 * this, so that we have to set the hardware flag based
1465 * on the interfaces added. As the monitor interface can
1466 * only be present by itself, and will be removed before
1467 * other interfaces are added, this is safe.
1469 if (vif
->type
== NL80211_IFTYPE_MONITOR
)
1470 priv
->hw
->flags
|= IEEE80211_HW_RX_INCLUDES_FCS
;
1472 priv
->hw
->flags
&= ~IEEE80211_HW_RX_INCLUDES_FCS
;
1474 err
= iwl_setup_interface(priv
, ctx
);
1479 priv
->iw_mode
= NL80211_IFTYPE_STATION
;
1481 mutex_unlock(&priv
->mutex
);
1483 IWL_DEBUG_MAC80211(priv
, "leave\n");
1487 static void iwl_teardown_interface(struct iwl_priv
*priv
,
1488 struct ieee80211_vif
*vif
,
1491 struct iwl_rxon_context
*ctx
= iwl_rxon_ctx_from_vif(vif
);
1493 lockdep_assert_held(&priv
->mutex
);
1495 if (priv
->scan_vif
== vif
) {
1496 iwl_scan_cancel_timeout(priv
, 200);
1497 iwl_force_scan_end(priv
);
1501 iwl_set_mode(priv
, ctx
);
1502 if (!ctx
->always_active
)
1503 ctx
->is_active
= false;
1507 * When removing the IBSS interface, overwrite the
1508 * BT traffic load with the stored one from the last
1509 * notification, if any. If this is a device that
1510 * doesn't implement this, this has no effect since
1511 * both values are the same and zero.
1513 if (vif
->type
== NL80211_IFTYPE_ADHOC
)
1514 priv
->bt_traffic_load
= priv
->last_bt_traffic_load
;
1517 static void iwlagn_mac_remove_interface(struct ieee80211_hw
*hw
,
1518 struct ieee80211_vif
*vif
)
1520 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1521 struct iwl_rxon_context
*ctx
= iwl_rxon_ctx_from_vif(vif
);
1523 IWL_DEBUG_MAC80211(priv
, "enter\n");
1525 mutex_lock(&priv
->mutex
);
1527 if (WARN_ON(ctx
->vif
!= vif
)) {
1528 struct iwl_rxon_context
*tmp
;
1529 IWL_ERR(priv
, "ctx->vif = %p, vif = %p\n", ctx
->vif
, vif
);
1530 for_each_context(priv
, tmp
)
1531 IWL_ERR(priv
, "\tID = %d:\tctx = %p\tctx->vif = %p\n",
1532 tmp
->ctxid
, tmp
, tmp
->vif
);
1536 iwl_teardown_interface(priv
, vif
, false);
1538 mutex_unlock(&priv
->mutex
);
1540 IWL_DEBUG_MAC80211(priv
, "leave\n");
1544 static int iwlagn_mac_change_interface(struct ieee80211_hw
*hw
,
1545 struct ieee80211_vif
*vif
,
1546 enum nl80211_iftype newtype
, bool newp2p
)
1548 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1549 struct iwl_rxon_context
*ctx
, *tmp
;
1550 enum nl80211_iftype newviftype
= newtype
;
1551 u32 interface_modes
;
1554 IWL_DEBUG_MAC80211(priv
, "enter\n");
1556 newtype
= ieee80211_iftype_p2p(newtype
, newp2p
);
1558 mutex_lock(&priv
->mutex
);
1560 ctx
= iwl_rxon_ctx_from_vif(vif
);
1563 * To simplify this code, only support changes on the
1564 * BSS context. The PAN context is usually reassigned
1565 * by creating/removing P2P interfaces anyway.
1567 if (ctx
->ctxid
!= IWL_RXON_CTX_BSS
) {
1572 if (!ctx
->vif
|| !iwl_is_ready_rf(priv
)) {
1574 * Huh? But wait ... this can maybe happen when
1575 * we're in the middle of a firmware restart!
1581 /* Check if the switch is supported in the same context */
1582 interface_modes
= ctx
->interface_modes
| ctx
->exclusive_interface_modes
;
1583 if (!(interface_modes
& BIT(newtype
))) {
1588 if (ctx
->exclusive_interface_modes
& BIT(newtype
)) {
1589 for_each_context(priv
, tmp
) {
1593 if (!tmp
->is_active
)
1597 * The current mode switch would be exclusive, but
1598 * another context is active ... refuse the switch.
1606 iwl_teardown_interface(priv
, vif
, true);
1607 vif
->type
= newviftype
;
1609 err
= iwl_setup_interface(priv
, ctx
);
1612 * We've switched internally, but submitting to the
1613 * device may have failed for some reason. Mask this
1614 * error, because otherwise mac80211 will not switch
1615 * (and set the interface type back) and we'll be
1616 * out of sync with it.
1621 mutex_unlock(&priv
->mutex
);
1622 IWL_DEBUG_MAC80211(priv
, "leave\n");
1627 static int iwlagn_mac_hw_scan(struct ieee80211_hw
*hw
,
1628 struct ieee80211_vif
*vif
,
1629 struct cfg80211_scan_request
*req
)
1631 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1634 IWL_DEBUG_MAC80211(priv
, "enter\n");
1636 if (req
->n_channels
== 0)
1639 mutex_lock(&priv
->mutex
);
1642 * If an internal scan is in progress, just set
1643 * up the scan_request as per above.
1645 if (priv
->scan_type
!= IWL_SCAN_NORMAL
) {
1646 IWL_DEBUG_SCAN(priv
,
1647 "SCAN request during internal scan - defer\n");
1648 priv
->scan_request
= req
;
1649 priv
->scan_vif
= vif
;
1652 priv
->scan_request
= req
;
1653 priv
->scan_vif
= vif
;
1655 * mac80211 will only ask for one band at a time
1656 * so using channels[0] here is ok
1658 ret
= iwl_scan_initiate(priv
, vif
, IWL_SCAN_NORMAL
,
1659 req
->channels
[0]->band
);
1661 priv
->scan_request
= NULL
;
1662 priv
->scan_vif
= NULL
;
1666 IWL_DEBUG_MAC80211(priv
, "leave\n");
1668 mutex_unlock(&priv
->mutex
);
1673 static void iwl_sta_modify_ps_wake(struct iwl_priv
*priv
, int sta_id
)
1675 struct iwl_addsta_cmd cmd
= {
1676 .mode
= STA_CONTROL_MODIFY_MSK
,
1677 .station_flags_msk
= STA_FLG_PWR_SAVE_MSK
,
1678 .sta
.sta_id
= sta_id
,
1681 iwl_send_add_sta(priv
, &cmd
, CMD_ASYNC
);
1684 static void iwlagn_mac_sta_notify(struct ieee80211_hw
*hw
,
1685 struct ieee80211_vif
*vif
,
1686 enum sta_notify_cmd cmd
,
1687 struct ieee80211_sta
*sta
)
1689 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1690 struct iwl_station_priv
*sta_priv
= (void *)sta
->drv_priv
;
1693 IWL_DEBUG_MAC80211(priv
, "enter\n");
1696 case STA_NOTIFY_SLEEP
:
1697 WARN_ON(!sta_priv
->client
);
1698 sta_priv
->asleep
= true;
1699 if (atomic_read(&sta_priv
->pending_frames
) > 0)
1700 ieee80211_sta_block_awake(hw
, sta
, true);
1702 case STA_NOTIFY_AWAKE
:
1703 WARN_ON(!sta_priv
->client
);
1704 if (!sta_priv
->asleep
)
1706 sta_priv
->asleep
= false;
1707 sta_id
= iwl_sta_id(sta
);
1708 if (sta_id
!= IWL_INVALID_STATION
)
1709 iwl_sta_modify_ps_wake(priv
, sta_id
);
1714 IWL_DEBUG_MAC80211(priv
, "leave\n");
1717 struct ieee80211_ops iwlagn_hw_ops
= {
1718 .tx
= iwlagn_mac_tx
,
1719 .start
= iwlagn_mac_start
,
1720 .stop
= iwlagn_mac_stop
,
1721 #ifdef CONFIG_PM_SLEEP
1722 .suspend
= iwlagn_mac_suspend
,
1723 .resume
= iwlagn_mac_resume
,
1724 .set_wakeup
= iwlagn_mac_set_wakeup
,
1726 .add_interface
= iwlagn_mac_add_interface
,
1727 .remove_interface
= iwlagn_mac_remove_interface
,
1728 .change_interface
= iwlagn_mac_change_interface
,
1729 .config
= iwlagn_mac_config
,
1730 .configure_filter
= iwlagn_configure_filter
,
1731 .set_key
= iwlagn_mac_set_key
,
1732 .update_tkip_key
= iwlagn_mac_update_tkip_key
,
1733 .set_rekey_data
= iwlagn_mac_set_rekey_data
,
1734 .conf_tx
= iwlagn_mac_conf_tx
,
1735 .bss_info_changed
= iwlagn_bss_info_changed
,
1736 .ampdu_action
= iwlagn_mac_ampdu_action
,
1737 .hw_scan
= iwlagn_mac_hw_scan
,
1738 .sta_notify
= iwlagn_mac_sta_notify
,
1739 .sta_state
= iwlagn_mac_sta_state
,
1740 .channel_switch
= iwlagn_mac_channel_switch
,
1741 .flush
= iwlagn_mac_flush
,
1742 .tx_last_beacon
= iwlagn_mac_tx_last_beacon
,
1743 .remain_on_channel
= iwlagn_mac_remain_on_channel
,
1744 .cancel_remain_on_channel
= iwlagn_mac_cancel_remain_on_channel
,
1745 .rssi_callback
= iwlagn_mac_rssi_callback
,
1746 CFG80211_TESTMODE_CMD(iwlagn_mac_testmode_cmd
)
1747 CFG80211_TESTMODE_DUMP(iwlagn_mac_testmode_dump
)
1748 .set_tim
= iwlagn_mac_set_tim
,
1751 /* This function both allocates and initializes hw and priv. */
1752 struct ieee80211_hw
*iwl_alloc_all(void)
1754 struct iwl_priv
*priv
;
1755 struct iwl_op_mode
*op_mode
;
1756 /* mac80211 allocates memory for this device instance, including
1757 * space for this driver's private structure */
1758 struct ieee80211_hw
*hw
;
1760 hw
= ieee80211_alloc_hw(sizeof(struct iwl_priv
) +
1761 sizeof(struct iwl_op_mode
), &iwlagn_hw_ops
);
1766 priv
= IWL_OP_MODE_GET_DVM(op_mode
);