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 <linuxwifi@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 ieee80211_hw_set(hw
, SIGNAL_DBM
);
108 ieee80211_hw_set(hw
, AMPDU_AGGREGATION
);
109 ieee80211_hw_set(hw
, NEED_DTIM_BEFORE_ASSOC
);
110 ieee80211_hw_set(hw
, SPECTRUM_MGMT
);
111 ieee80211_hw_set(hw
, REPORTS_TX_ACK_STATUS
);
112 ieee80211_hw_set(hw
, QUEUE_CONTROL
);
113 ieee80211_hw_set(hw
, SUPPORTS_PS
);
114 ieee80211_hw_set(hw
, SUPPORTS_DYNAMIC_PS
);
115 ieee80211_hw_set(hw
, SUPPORT_FAST_XMIT
);
116 ieee80211_hw_set(hw
, WANT_MONITOR_VIF
);
118 if (priv
->trans
->max_skb_frags
)
119 hw
->netdev_features
= NETIF_F_HIGHDMA
| NETIF_F_SG
;
121 hw
->offchannel_tx_hw_queue
= IWL_AUX_QUEUE
;
122 hw
->radiotap_mcs_details
|= IEEE80211_RADIOTAP_MCS_HAVE_FMT
;
125 * Including the following line will crash some AP's. This
126 * workaround removes the stimulus which causes the crash until
127 * the AP software can be fixed.
128 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
131 if (priv
->nvm_data
->sku_cap_11n_enable
)
132 hw
->wiphy
->features
|= NL80211_FEATURE_DYNAMIC_SMPS
|
133 NL80211_FEATURE_STATIC_SMPS
;
136 * Enable 11w if advertised by firmware and software crypto
137 * is not enabled (as the firmware will interpret some mgmt
138 * packets, so enabling it with software crypto isn't safe)
140 if (priv
->fw
->ucode_capa
.flags
& IWL_UCODE_TLV_FLAGS_MFP
&&
141 !iwlwifi_mod_params
.sw_crypto
)
142 ieee80211_hw_set(hw
, MFP_CAPABLE
);
144 hw
->sta_data_size
= sizeof(struct iwl_station_priv
);
145 hw
->vif_data_size
= sizeof(struct iwl_vif_priv
);
147 for_each_context(priv
, ctx
) {
148 hw
->wiphy
->interface_modes
|= ctx
->interface_modes
;
149 hw
->wiphy
->interface_modes
|= ctx
->exclusive_interface_modes
;
152 BUILD_BUG_ON(NUM_IWL_RXON_CTX
!= 2);
154 if (hw
->wiphy
->interface_modes
& BIT(NL80211_IFTYPE_AP
)) {
155 hw
->wiphy
->iface_combinations
=
156 iwlagn_iface_combinations_dualmode
;
157 hw
->wiphy
->n_iface_combinations
=
158 ARRAY_SIZE(iwlagn_iface_combinations_dualmode
);
161 hw
->wiphy
->flags
|= WIPHY_FLAG_IBSS_RSN
;
162 hw
->wiphy
->regulatory_flags
|= REGULATORY_CUSTOM_REG
|
163 REGULATORY_DISABLE_BEACON_HINTS
;
165 #ifdef CONFIG_PM_SLEEP
166 if (priv
->fw
->img
[IWL_UCODE_WOWLAN
].sec
[0].len
&&
167 priv
->trans
->ops
->d3_suspend
&&
168 priv
->trans
->ops
->d3_resume
&&
169 device_can_wakeup(priv
->trans
->dev
)) {
170 priv
->wowlan_support
.flags
= WIPHY_WOWLAN_MAGIC_PKT
|
171 WIPHY_WOWLAN_DISCONNECT
|
172 WIPHY_WOWLAN_EAP_IDENTITY_REQ
|
173 WIPHY_WOWLAN_RFKILL_RELEASE
;
174 if (!iwlwifi_mod_params
.sw_crypto
)
175 priv
->wowlan_support
.flags
|=
176 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY
|
177 WIPHY_WOWLAN_GTK_REKEY_FAILURE
;
179 priv
->wowlan_support
.n_patterns
= IWLAGN_WOWLAN_MAX_PATTERNS
;
180 priv
->wowlan_support
.pattern_min_len
=
181 IWLAGN_WOWLAN_MIN_PATTERN_LEN
;
182 priv
->wowlan_support
.pattern_max_len
=
183 IWLAGN_WOWLAN_MAX_PATTERN_LEN
;
184 hw
->wiphy
->wowlan
= &priv
->wowlan_support
;
188 if (iwlwifi_mod_params
.power_save
)
189 hw
->wiphy
->flags
|= WIPHY_FLAG_PS_ON_BY_DEFAULT
;
191 hw
->wiphy
->flags
&= ~WIPHY_FLAG_PS_ON_BY_DEFAULT
;
193 hw
->wiphy
->max_scan_ssids
= PROBE_OPTION_MAX
;
194 /* we create the 802.11 header and a max-length SSID element */
195 hw
->wiphy
->max_scan_ie_len
= capa
->max_probe_length
- 24 - 34;
198 * We don't use all queues: 4 and 9 are unused and any
199 * aggregation queue gets mapped down to the AC queue.
201 hw
->queues
= IWLAGN_FIRST_AMPDU_QUEUE
;
203 hw
->max_listen_interval
= IWL_CONN_MAX_LISTEN_INTERVAL
;
205 if (priv
->nvm_data
->bands
[IEEE80211_BAND_2GHZ
].n_channels
)
206 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] =
207 &priv
->nvm_data
->bands
[IEEE80211_BAND_2GHZ
];
208 if (priv
->nvm_data
->bands
[IEEE80211_BAND_5GHZ
].n_channels
)
209 priv
->hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] =
210 &priv
->nvm_data
->bands
[IEEE80211_BAND_5GHZ
];
212 hw
->wiphy
->hw_version
= priv
->trans
->hw_id
;
216 ret
= ieee80211_register_hw(priv
->hw
);
218 IWL_ERR(priv
, "Failed to register hw (error %d)\n", ret
);
222 priv
->mac80211_registered
= 1;
227 void iwlagn_mac_unregister(struct iwl_priv
*priv
)
229 if (!priv
->mac80211_registered
)
232 ieee80211_unregister_hw(priv
->hw
);
233 priv
->mac80211_registered
= 0;
236 static int __iwl_up(struct iwl_priv
*priv
)
238 struct iwl_rxon_context
*ctx
;
241 lockdep_assert_held(&priv
->mutex
);
243 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
244 IWL_WARN(priv
, "Exit pending; will not bring the NIC up\n");
248 for_each_context(priv
, ctx
) {
249 ret
= iwlagn_alloc_bcast_station(priv
, ctx
);
251 iwl_dealloc_bcast_stations(priv
);
256 ret
= iwl_trans_start_hw(priv
->trans
);
258 IWL_ERR(priv
, "Failed to start HW: %d\n", ret
);
262 ret
= iwl_run_init_ucode(priv
);
264 IWL_ERR(priv
, "Failed to run INIT ucode: %d\n", ret
);
268 ret
= iwl_trans_start_hw(priv
->trans
);
270 IWL_ERR(priv
, "Failed to start HW: %d\n", ret
);
274 ret
= iwl_load_ucode_wait_alive(priv
, IWL_UCODE_REGULAR
);
276 IWL_ERR(priv
, "Failed to start RT ucode: %d\n", ret
);
280 ret
= iwl_alive_start(priv
);
286 set_bit(STATUS_EXIT_PENDING
, &priv
->status
);
288 clear_bit(STATUS_EXIT_PENDING
, &priv
->status
);
290 IWL_ERR(priv
, "Unable to initialize device.\n");
294 static int iwlagn_mac_start(struct ieee80211_hw
*hw
)
296 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
299 IWL_DEBUG_MAC80211(priv
, "enter\n");
301 /* we should be verifying the device is ready to be opened */
302 mutex_lock(&priv
->mutex
);
303 ret
= __iwl_up(priv
);
304 mutex_unlock(&priv
->mutex
);
308 IWL_DEBUG_INFO(priv
, "Start UP work done.\n");
310 /* Now we should be done, and the READY bit should be set. */
311 if (WARN_ON(!test_bit(STATUS_READY
, &priv
->status
)))
314 iwlagn_led_enable(priv
);
317 IWL_DEBUG_MAC80211(priv
, "leave\n");
321 static void iwlagn_mac_stop(struct ieee80211_hw
*hw
)
323 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
325 IWL_DEBUG_MAC80211(priv
, "enter\n");
332 mutex_lock(&priv
->mutex
);
334 mutex_unlock(&priv
->mutex
);
336 iwl_cancel_deferred_work(priv
);
338 flush_workqueue(priv
->workqueue
);
340 IWL_DEBUG_MAC80211(priv
, "leave\n");
343 static void iwlagn_mac_set_rekey_data(struct ieee80211_hw
*hw
,
344 struct ieee80211_vif
*vif
,
345 struct cfg80211_gtk_rekey_data
*data
)
347 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
349 if (iwlwifi_mod_params
.sw_crypto
)
352 IWL_DEBUG_MAC80211(priv
, "enter\n");
353 mutex_lock(&priv
->mutex
);
355 if (priv
->contexts
[IWL_RXON_CTX_BSS
].vif
!= vif
)
358 memcpy(priv
->kek
, data
->kek
, NL80211_KEK_LEN
);
359 memcpy(priv
->kck
, data
->kck
, NL80211_KCK_LEN
);
361 cpu_to_le64(be64_to_cpup((__be64
*)&data
->replay_ctr
));
362 priv
->have_rekey_data
= true;
365 mutex_unlock(&priv
->mutex
);
366 IWL_DEBUG_MAC80211(priv
, "leave\n");
369 #ifdef CONFIG_PM_SLEEP
371 static int iwlagn_mac_suspend(struct ieee80211_hw
*hw
,
372 struct cfg80211_wowlan
*wowlan
)
374 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
375 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
378 if (WARN_ON(!wowlan
))
381 IWL_DEBUG_MAC80211(priv
, "enter\n");
382 mutex_lock(&priv
->mutex
);
384 /* Don't attempt WoWLAN when not associated, tear down instead. */
385 if (!ctx
->vif
|| ctx
->vif
->type
!= NL80211_IFTYPE_STATION
||
386 !iwl_is_associated_ctx(ctx
)) {
391 ret
= iwlagn_suspend(priv
, wowlan
);
395 /* let the ucode operate on its own */
396 iwl_write32(priv
->trans
, CSR_UCODE_DRV_GP1_SET
,
397 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE
);
399 iwl_trans_d3_suspend(priv
->trans
, false, true);
404 priv
->wowlan
= false;
405 iwlagn_prepare_restart(priv
);
406 ieee80211_restart_hw(priv
->hw
);
408 mutex_unlock(&priv
->mutex
);
409 IWL_DEBUG_MAC80211(priv
, "leave\n");
414 struct iwl_resume_data
{
415 struct iwl_priv
*priv
;
416 struct iwlagn_wowlan_status
*cmd
;
420 static bool iwl_resume_status_fn(struct iwl_notif_wait_data
*notif_wait
,
421 struct iwl_rx_packet
*pkt
, void *data
)
423 struct iwl_resume_data
*resume_data
= data
;
424 struct iwl_priv
*priv
= resume_data
->priv
;
426 if (iwl_rx_packet_payload_len(pkt
) != sizeof(*resume_data
->cmd
)) {
427 IWL_ERR(priv
, "rx wrong size data\n");
430 memcpy(resume_data
->cmd
, pkt
->data
, sizeof(*resume_data
->cmd
));
431 resume_data
->valid
= true;
436 static int iwlagn_mac_resume(struct ieee80211_hw
*hw
)
438 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
439 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
440 struct ieee80211_vif
*vif
;
443 enum iwl_d3_status d3_status
;
444 struct error_table_start
{
445 /* cf. struct iwl_error_event_table */
449 struct iwl_notification_wait status_wait
;
450 static const u16 status_cmd
[] = {
451 REPLY_WOWLAN_GET_STATUS
,
453 struct iwlagn_wowlan_status status_data
= {};
454 struct iwl_resume_data resume_data
= {
459 struct cfg80211_wowlan_wakeup wakeup
= {
462 #ifdef CONFIG_IWLWIFI_DEBUGFS
463 const struct fw_img
*img
;
466 IWL_DEBUG_MAC80211(priv
, "enter\n");
467 mutex_lock(&priv
->mutex
);
469 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
472 ret
= iwl_trans_d3_resume(priv
->trans
, &d3_status
, false, true);
476 if (d3_status
!= IWL_D3_STATUS_ALIVE
) {
477 IWL_INFO(priv
, "Device was reset during suspend\n");
481 /* uCode is no longer operating by itself */
482 iwl_write32(priv
->trans
, CSR_UCODE_DRV_GP1_CLR
,
483 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE
);
485 base
= priv
->device_pointers
.error_event_table
;
486 if (!iwlagn_hw_valid_rtc_data_addr(base
)) {
487 IWL_WARN(priv
, "Invalid error table during resume!\n");
491 iwl_trans_read_mem_bytes(priv
->trans
, base
,
492 &err_info
, sizeof(err_info
));
494 if (err_info
.valid
) {
495 IWL_INFO(priv
, "error table is valid (%d, 0x%x)\n",
496 err_info
.valid
, err_info
.error_id
);
497 if (err_info
.error_id
== RF_KILL_INDICATOR_FOR_WOWLAN
) {
498 wakeup
.rfkill_release
= true;
499 ieee80211_report_wowlan_wakeup(vif
, &wakeup
,
505 #ifdef CONFIG_IWLWIFI_DEBUGFS
506 img
= &priv
->fw
->img
[IWL_UCODE_WOWLAN
];
507 if (!priv
->wowlan_sram
)
509 kzalloc(img
->sec
[IWL_UCODE_SECTION_DATA
].len
,
512 if (priv
->wowlan_sram
)
513 iwl_trans_read_mem(priv
->trans
, 0x800000,
515 img
->sec
[IWL_UCODE_SECTION_DATA
].len
/ 4);
519 * This is very strange. The GET_STATUS command is sent but the device
520 * doesn't reply properly, it seems it doesn't close the RBD so one is
521 * always left open ... As a result, we need to send another command
522 * and have to reset the driver afterwards. As we need to switch to
523 * runtime firmware again that'll happen.
526 iwl_init_notification_wait(&priv
->notif_wait
, &status_wait
, status_cmd
,
527 ARRAY_SIZE(status_cmd
), iwl_resume_status_fn
,
530 iwl_dvm_send_cmd_pdu(priv
, REPLY_WOWLAN_GET_STATUS
, CMD_ASYNC
, 0, NULL
);
531 iwl_dvm_send_cmd_pdu(priv
, REPLY_ECHO
, CMD_ASYNC
, 0, NULL
);
532 /* an RBD is left open in the firmware now! */
534 ret
= iwl_wait_notification(&priv
->notif_wait
, &status_wait
, HZ
/5);
538 if (resume_data
.valid
&& priv
->contexts
[IWL_RXON_CTX_BSS
].vif
) {
539 u32 reasons
= le32_to_cpu(status_data
.wakeup_reason
);
540 struct cfg80211_wowlan_wakeup
*wakeup_report
;
542 IWL_INFO(priv
, "WoWLAN wakeup reason(s): 0x%.8x\n", reasons
);
545 if (reasons
& IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET
)
546 wakeup
.magic_pkt
= true;
547 if (reasons
& IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH
)
548 wakeup
.pattern_idx
= status_data
.pattern_number
;
549 if (reasons
& (IWLAGN_WOWLAN_WAKEUP_BEACON_MISS
|
550 IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE
))
551 wakeup
.disconnect
= true;
552 if (reasons
& IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL
)
553 wakeup
.gtk_rekey_failure
= true;
554 if (reasons
& IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ
)
555 wakeup
.eap_identity_req
= true;
556 if (reasons
& IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE
)
557 wakeup
.four_way_handshake
= true;
558 wakeup_report
= &wakeup
;
560 wakeup_report
= NULL
;
563 ieee80211_report_wowlan_wakeup(vif
, wakeup_report
, GFP_KERNEL
);
566 priv
->wowlan
= false;
568 iwlagn_prepare_restart(priv
);
570 memset((void *)&ctx
->active
, 0, sizeof(ctx
->active
));
571 iwl_connection_init_rx_config(priv
, ctx
);
572 iwlagn_set_rxon_chain(priv
, ctx
);
575 mutex_unlock(&priv
->mutex
);
576 IWL_DEBUG_MAC80211(priv
, "leave\n");
578 ieee80211_resume_disconnect(vif
);
583 static void iwlagn_mac_set_wakeup(struct ieee80211_hw
*hw
, bool enabled
)
585 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
587 device_set_wakeup_enable(priv
->trans
->dev
, enabled
);
591 static void iwlagn_mac_tx(struct ieee80211_hw
*hw
,
592 struct ieee80211_tx_control
*control
,
595 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
597 if (iwlagn_tx_skb(priv
, control
->sta
, skb
))
598 ieee80211_free_txskb(hw
, skb
);
601 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw
*hw
,
602 struct ieee80211_vif
*vif
,
603 struct ieee80211_key_conf
*keyconf
,
604 struct ieee80211_sta
*sta
,
605 u32 iv32
, u16
*phase1key
)
607 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
609 iwl_update_tkip_key(priv
, vif
, keyconf
, sta
, iv32
, phase1key
);
612 static int iwlagn_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
613 struct ieee80211_vif
*vif
,
614 struct ieee80211_sta
*sta
,
615 struct ieee80211_key_conf
*key
)
617 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
618 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
619 struct iwl_rxon_context
*ctx
= vif_priv
->ctx
;
621 bool is_default_wep_key
= false;
623 IWL_DEBUG_MAC80211(priv
, "enter\n");
625 if (iwlwifi_mod_params
.sw_crypto
) {
626 IWL_DEBUG_MAC80211(priv
, "leave - hwcrypto disabled\n");
630 switch (key
->cipher
) {
631 case WLAN_CIPHER_SUITE_TKIP
:
632 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_MMIC
;
634 case WLAN_CIPHER_SUITE_CCMP
:
635 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
642 * We could program these keys into the hardware as well, but we
643 * don't expect much multicast traffic in IBSS and having keys
644 * for more stations is probably more useful.
646 * Mark key TX-only and return 0.
648 if (vif
->type
== NL80211_IFTYPE_ADHOC
&&
649 !(key
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
)) {
650 key
->hw_key_idx
= WEP_INVALID_OFFSET
;
654 /* If they key was TX-only, accept deletion */
655 if (cmd
== DISABLE_KEY
&& key
->hw_key_idx
== WEP_INVALID_OFFSET
)
658 mutex_lock(&priv
->mutex
);
659 iwl_scan_cancel_timeout(priv
, 100);
661 BUILD_BUG_ON(WEP_INVALID_OFFSET
== IWLAGN_HW_KEY_DEFAULT
);
664 * If we are getting WEP group key and we didn't receive any key mapping
665 * so far, we are in legacy wep mode (group key only), otherwise we are
667 * In legacy wep mode, we use another host command to the uCode.
669 if ((key
->cipher
== WLAN_CIPHER_SUITE_WEP40
||
670 key
->cipher
== WLAN_CIPHER_SUITE_WEP104
) && !sta
) {
672 is_default_wep_key
= !ctx
->key_mapping_keys
;
675 key
->hw_key_idx
== IWLAGN_HW_KEY_DEFAULT
;
681 if (is_default_wep_key
) {
682 ret
= iwl_set_default_wep_key(priv
, vif_priv
->ctx
, key
);
685 ret
= iwl_set_dynamic_key(priv
, vif_priv
->ctx
, key
, sta
);
688 * can't add key for RX, but we don't need it
689 * in the device for TX so still return 0
692 key
->hw_key_idx
= WEP_INVALID_OFFSET
;
695 IWL_DEBUG_MAC80211(priv
, "enable hwcrypto key\n");
698 if (is_default_wep_key
)
699 ret
= iwl_remove_default_wep_key(priv
, ctx
, key
);
701 ret
= iwl_remove_dynamic_key(priv
, ctx
, key
, sta
);
703 IWL_DEBUG_MAC80211(priv
, "disable hwcrypto key\n");
709 mutex_unlock(&priv
->mutex
);
710 IWL_DEBUG_MAC80211(priv
, "leave\n");
715 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg
*cfg
)
717 if (iwlwifi_mod_params
.disable_11n
& IWL_DISABLE_HT_RXAGG
)
722 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg
*cfg
)
724 if (iwlwifi_mod_params
.disable_11n
& IWL_DISABLE_HT_TXAGG
)
726 if (iwlwifi_mod_params
.disable_11n
& IWL_ENABLE_HT_TXAGG
)
729 /* disabled by default */
733 static int iwlagn_mac_ampdu_action(struct ieee80211_hw
*hw
,
734 struct ieee80211_vif
*vif
,
735 enum ieee80211_ampdu_mlme_action action
,
736 struct ieee80211_sta
*sta
, u16 tid
, u16
*ssn
,
737 u8 buf_size
, bool amsdu
)
739 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
741 struct iwl_station_priv
*sta_priv
= (void *) sta
->drv_priv
;
743 IWL_DEBUG_HT(priv
, "A-MPDU action on addr %pM tid %d\n",
746 if (!(priv
->nvm_data
->sku_cap_11n_enable
))
749 IWL_DEBUG_MAC80211(priv
, "enter\n");
750 mutex_lock(&priv
->mutex
);
753 case IEEE80211_AMPDU_RX_START
:
754 if (!iwl_enable_rx_ampdu(priv
->cfg
))
756 IWL_DEBUG_HT(priv
, "start Rx\n");
757 ret
= iwl_sta_rx_agg_start(priv
, sta
, tid
, *ssn
);
759 case IEEE80211_AMPDU_RX_STOP
:
760 IWL_DEBUG_HT(priv
, "stop Rx\n");
761 ret
= iwl_sta_rx_agg_stop(priv
, sta
, tid
);
763 case IEEE80211_AMPDU_TX_START
:
764 if (!priv
->trans
->ops
->txq_enable
)
766 if (!iwl_enable_tx_ampdu(priv
->cfg
))
768 IWL_DEBUG_HT(priv
, "start Tx\n");
769 ret
= iwlagn_tx_agg_start(priv
, vif
, sta
, tid
, ssn
);
771 case IEEE80211_AMPDU_TX_STOP_FLUSH
:
772 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT
:
773 IWL_DEBUG_HT(priv
, "Flush Tx\n");
774 ret
= iwlagn_tx_agg_flush(priv
, vif
, sta
, tid
);
776 case IEEE80211_AMPDU_TX_STOP_CONT
:
777 IWL_DEBUG_HT(priv
, "stop Tx\n");
778 ret
= iwlagn_tx_agg_stop(priv
, vif
, sta
, tid
);
779 if ((ret
== 0) && (priv
->agg_tids_count
> 0)) {
780 priv
->agg_tids_count
--;
781 IWL_DEBUG_HT(priv
, "priv->agg_tids_count = %u\n",
782 priv
->agg_tids_count
);
784 if (!priv
->agg_tids_count
&&
785 priv
->hw_params
.use_rts_for_aggregation
) {
787 * switch off RTS/CTS if it was previously enabled
789 sta_priv
->lq_sta
.lq
.general_params
.flags
&=
790 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK
;
791 iwl_send_lq_cmd(priv
, iwl_rxon_ctx_from_vif(vif
),
792 &sta_priv
->lq_sta
.lq
, CMD_ASYNC
, false);
795 case IEEE80211_AMPDU_TX_OPERATIONAL
:
796 ret
= iwlagn_tx_agg_oper(priv
, vif
, sta
, tid
, buf_size
);
799 mutex_unlock(&priv
->mutex
);
800 IWL_DEBUG_MAC80211(priv
, "leave\n");
804 static int iwlagn_mac_sta_add(struct ieee80211_hw
*hw
,
805 struct ieee80211_vif
*vif
,
806 struct ieee80211_sta
*sta
)
808 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
809 struct iwl_station_priv
*sta_priv
= (void *)sta
->drv_priv
;
810 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
811 bool is_ap
= vif
->type
== NL80211_IFTYPE_STATION
;
815 IWL_DEBUG_INFO(priv
, "proceeding to add station %pM\n",
817 sta_priv
->sta_id
= IWL_INVALID_STATION
;
819 atomic_set(&sta_priv
->pending_frames
, 0);
820 if (vif
->type
== NL80211_IFTYPE_AP
)
821 sta_priv
->client
= true;
823 ret
= iwl_add_station_common(priv
, vif_priv
->ctx
, sta
->addr
,
824 is_ap
, sta
, &sta_id
);
826 IWL_ERR(priv
, "Unable to add station %pM (%d)\n",
828 /* Should we return success if return code is EEXIST ? */
832 sta_priv
->sta_id
= sta_id
;
837 static int iwlagn_mac_sta_remove(struct ieee80211_hw
*hw
,
838 struct ieee80211_vif
*vif
,
839 struct ieee80211_sta
*sta
)
841 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
842 struct iwl_station_priv
*sta_priv
= (void *)sta
->drv_priv
;
845 IWL_DEBUG_INFO(priv
, "proceeding to remove station %pM\n", sta
->addr
);
847 if (vif
->type
== NL80211_IFTYPE_STATION
) {
849 * Station will be removed from device when the RXON
850 * is set to unassociated -- just deactivate it here
851 * to avoid re-programming it.
854 iwl_deactivate_station(priv
, sta_priv
->sta_id
, sta
->addr
);
856 ret
= iwl_remove_station(priv
, sta_priv
->sta_id
, sta
->addr
);
858 IWL_DEBUG_QUIET_RFKILL(priv
,
859 "Error removing station %pM\n", sta
->addr
);
864 static int iwlagn_mac_sta_state(struct ieee80211_hw
*hw
,
865 struct ieee80211_vif
*vif
,
866 struct ieee80211_sta
*sta
,
867 enum ieee80211_sta_state old_state
,
868 enum ieee80211_sta_state new_state
)
870 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
871 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
873 NONE
, ADD
, REMOVE
, HT_RATE_INIT
, ADD_RATE_INIT
,
877 IWL_DEBUG_MAC80211(priv
, "station %pM state change %d->%d\n",
878 sta
->addr
, old_state
, new_state
);
880 mutex_lock(&priv
->mutex
);
881 if (vif
->type
== NL80211_IFTYPE_STATION
) {
882 if (old_state
== IEEE80211_STA_NOTEXIST
&&
883 new_state
== IEEE80211_STA_NONE
)
885 else if (old_state
== IEEE80211_STA_NONE
&&
886 new_state
== IEEE80211_STA_NOTEXIST
)
888 else if (old_state
== IEEE80211_STA_AUTH
&&
889 new_state
== IEEE80211_STA_ASSOC
)
892 if (old_state
== IEEE80211_STA_AUTH
&&
893 new_state
== IEEE80211_STA_ASSOC
)
895 else if (old_state
== IEEE80211_STA_ASSOC
&&
896 new_state
== IEEE80211_STA_AUTH
)
902 ret
= iwlagn_mac_sta_add(hw
, vif
, sta
);
906 * Clear the in-progress flag, the AP station entry was added
907 * but we'll initialize LQ only when we've associated (which
908 * would also clear the in-progress flag). This is necessary
909 * in case we never initialize LQ because association fails.
911 spin_lock_bh(&priv
->sta_lock
);
912 priv
->stations
[iwl_sta_id(sta
)].used
&=
913 ~IWL_STA_UCODE_INPROGRESS
;
914 spin_unlock_bh(&priv
->sta_lock
);
917 ret
= iwlagn_mac_sta_remove(hw
, vif
, sta
);
920 ret
= iwlagn_mac_sta_add(hw
, vif
, sta
);
923 /* Initialize rate scaling */
925 "Initializing rate scaling for station %pM\n",
927 iwl_rs_rate_init(priv
, sta
, iwl_sta_id(sta
));
931 /* Initialize rate scaling */
932 ret
= iwl_sta_update_ht(priv
, vif_priv
->ctx
, sta
);
936 "Initializing rate scaling for station %pM\n",
938 iwl_rs_rate_init(priv
, sta
, iwl_sta_id(sta
));
947 * mac80211 might WARN if we fail, but due the way we
948 * (badly) handle hard rfkill, we might fail here
950 if (iwl_is_rfkill(priv
))
953 mutex_unlock(&priv
->mutex
);
954 IWL_DEBUG_MAC80211(priv
, "leave\n");
959 static void iwlagn_mac_channel_switch(struct ieee80211_hw
*hw
,
960 struct ieee80211_vif
*vif
,
961 struct ieee80211_channel_switch
*ch_switch
)
963 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
964 struct ieee80211_conf
*conf
= &hw
->conf
;
965 struct ieee80211_channel
*channel
= ch_switch
->chandef
.chan
;
966 struct iwl_ht_config
*ht_conf
= &priv
->current_ht_config
;
969 * When we add support for multiple interfaces, we need to
970 * revisit this. The channel switch command in the device
971 * only affects the BSS context, but what does that really
972 * mean? And what if we get a CSA on the second interface?
973 * This needs a lot of work.
975 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
978 IWL_DEBUG_MAC80211(priv
, "enter\n");
980 mutex_lock(&priv
->mutex
);
982 if (iwl_is_rfkill(priv
))
985 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
) ||
986 test_bit(STATUS_SCANNING
, &priv
->status
) ||
987 test_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->status
))
990 if (!iwl_is_associated_ctx(ctx
))
993 if (!priv
->lib
->set_channel_switch
)
996 ch
= channel
->hw_value
;
997 if (le16_to_cpu(ctx
->active
.channel
) == ch
)
1000 priv
->current_ht_config
.smps
= conf
->smps_mode
;
1002 /* Configure HT40 channels */
1003 switch (cfg80211_get_chandef_type(&ch_switch
->chandef
)) {
1004 case NL80211_CHAN_NO_HT
:
1005 case NL80211_CHAN_HT20
:
1006 ctx
->ht
.is_40mhz
= false;
1007 ctx
->ht
.extension_chan_offset
= IEEE80211_HT_PARAM_CHA_SEC_NONE
;
1009 case NL80211_CHAN_HT40MINUS
:
1010 ctx
->ht
.extension_chan_offset
= IEEE80211_HT_PARAM_CHA_SEC_BELOW
;
1011 ctx
->ht
.is_40mhz
= true;
1013 case NL80211_CHAN_HT40PLUS
:
1014 ctx
->ht
.extension_chan_offset
= IEEE80211_HT_PARAM_CHA_SEC_ABOVE
;
1015 ctx
->ht
.is_40mhz
= true;
1019 if ((le16_to_cpu(ctx
->staging
.channel
) != ch
))
1020 ctx
->staging
.flags
= 0;
1022 iwl_set_rxon_channel(priv
, channel
, ctx
);
1023 iwl_set_rxon_ht(priv
, ht_conf
);
1024 iwl_set_flags_for_band(priv
, ctx
, channel
->band
, ctx
->vif
);
1027 * at this point, staging_rxon has the
1028 * configuration for channel switch
1030 set_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->status
);
1031 priv
->switch_channel
= cpu_to_le16(ch
);
1032 if (priv
->lib
->set_channel_switch(priv
, ch_switch
)) {
1033 clear_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->status
);
1034 priv
->switch_channel
= 0;
1035 ieee80211_chswitch_done(ctx
->vif
, false);
1039 mutex_unlock(&priv
->mutex
);
1040 IWL_DEBUG_MAC80211(priv
, "leave\n");
1043 void iwl_chswitch_done(struct iwl_priv
*priv
, bool is_success
)
1047 * See iwlagn_mac_channel_switch.
1049 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
1051 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1054 if (!test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->status
))
1058 ieee80211_chswitch_done(ctx
->vif
, is_success
);
1061 static void iwlagn_configure_filter(struct ieee80211_hw
*hw
,
1062 unsigned int changed_flags
,
1063 unsigned int *total_flags
,
1066 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1067 __le32 filter_or
= 0, filter_nand
= 0;
1068 struct iwl_rxon_context
*ctx
;
1070 #define CHK(test, flag) do { \
1071 if (*total_flags & (test)) \
1072 filter_or |= (flag); \
1074 filter_nand |= (flag); \
1077 IWL_DEBUG_MAC80211(priv
, "Enter: changed: 0x%x, total: 0x%x\n",
1078 changed_flags
, *total_flags
);
1080 CHK(FIF_OTHER_BSS
, RXON_FILTER_PROMISC_MSK
);
1081 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
1082 CHK(FIF_CONTROL
, RXON_FILTER_CTL2HOST_MSK
| RXON_FILTER_PROMISC_MSK
);
1083 CHK(FIF_BCN_PRBRESP_PROMISC
, RXON_FILTER_BCON_AWARE_MSK
);
1087 mutex_lock(&priv
->mutex
);
1089 for_each_context(priv
, ctx
) {
1090 ctx
->staging
.filter_flags
&= ~filter_nand
;
1091 ctx
->staging
.filter_flags
|= filter_or
;
1094 * Not committing directly because hardware can perform a scan,
1095 * but we'll eventually commit the filter flags change anyway.
1099 mutex_unlock(&priv
->mutex
);
1102 * Receiving all multicast frames is always enabled by the
1103 * default flags setup in iwl_connection_init_rx_config()
1104 * since we currently do not support programming multicast
1105 * filters into the device.
1107 *total_flags
&= FIF_OTHER_BSS
| FIF_ALLMULTI
|
1108 FIF_BCN_PRBRESP_PROMISC
| FIF_CONTROL
;
1111 static void iwlagn_mac_flush(struct ieee80211_hw
*hw
, struct ieee80211_vif
*vif
,
1112 u32 queues
, bool drop
)
1114 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1117 mutex_lock(&priv
->mutex
);
1118 IWL_DEBUG_MAC80211(priv
, "enter\n");
1120 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
1121 IWL_DEBUG_TX(priv
, "Aborting flush due to device shutdown\n");
1124 if (iwl_is_rfkill(priv
)) {
1125 IWL_DEBUG_TX(priv
, "Aborting flush due to RF Kill\n");
1129 scd_queues
= BIT(priv
->cfg
->base_params
->num_of_queues
) - 1;
1130 scd_queues
&= ~(BIT(IWL_IPAN_CMD_QUEUE_NUM
) |
1131 BIT(IWL_DEFAULT_CMD_QUEUE_NUM
));
1134 IWL_DEBUG_TX_QUEUES(priv
, "Flushing SCD queues: 0x%x\n",
1136 if (iwlagn_txfifo_flush(priv
, scd_queues
)) {
1137 IWL_ERR(priv
, "flush request fail\n");
1142 IWL_DEBUG_TX_QUEUES(priv
, "wait transmit/flush all frames\n");
1143 iwl_trans_wait_tx_queue_empty(priv
->trans
, scd_queues
);
1145 mutex_unlock(&priv
->mutex
);
1146 IWL_DEBUG_MAC80211(priv
, "leave\n");
1149 static void iwlagn_mac_event_callback(struct ieee80211_hw
*hw
,
1150 struct ieee80211_vif
*vif
,
1151 const struct ieee80211_event
*event
)
1153 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1155 if (event
->type
!= RSSI_EVENT
)
1158 IWL_DEBUG_MAC80211(priv
, "enter\n");
1160 if (priv
->lib
->bt_params
&&
1161 priv
->lib
->bt_params
->advanced_bt_coexist
) {
1162 if (event
->u
.rssi
.data
== RSSI_EVENT_LOW
)
1163 priv
->bt_enable_pspoll
= true;
1164 else if (event
->u
.rssi
.data
== RSSI_EVENT_HIGH
)
1165 priv
->bt_enable_pspoll
= false;
1167 queue_work(priv
->workqueue
, &priv
->bt_runtime_config
);
1169 IWL_DEBUG_MAC80211(priv
, "Advanced BT coex disabled,"
1170 "ignoring RSSI callback\n");
1173 IWL_DEBUG_MAC80211(priv
, "leave\n");
1176 static int iwlagn_mac_set_tim(struct ieee80211_hw
*hw
,
1177 struct ieee80211_sta
*sta
, bool set
)
1179 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1181 queue_work(priv
->workqueue
, &priv
->beacon_update
);
1186 static int iwlagn_mac_conf_tx(struct ieee80211_hw
*hw
,
1187 struct ieee80211_vif
*vif
, u16 queue
,
1188 const struct ieee80211_tx_queue_params
*params
)
1190 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1191 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
1192 struct iwl_rxon_context
*ctx
= vif_priv
->ctx
;
1198 IWL_DEBUG_MAC80211(priv
, "enter\n");
1200 if (!iwl_is_ready_rf(priv
)) {
1201 IWL_DEBUG_MAC80211(priv
, "leave - RF not ready\n");
1205 if (queue
>= AC_NUM
) {
1206 IWL_DEBUG_MAC80211(priv
, "leave - queue >= AC_NUM %d\n", queue
);
1210 q
= AC_NUM
- 1 - queue
;
1212 mutex_lock(&priv
->mutex
);
1214 ctx
->qos_data
.def_qos_parm
.ac
[q
].cw_min
=
1215 cpu_to_le16(params
->cw_min
);
1216 ctx
->qos_data
.def_qos_parm
.ac
[q
].cw_max
=
1217 cpu_to_le16(params
->cw_max
);
1218 ctx
->qos_data
.def_qos_parm
.ac
[q
].aifsn
= params
->aifs
;
1219 ctx
->qos_data
.def_qos_parm
.ac
[q
].edca_txop
=
1220 cpu_to_le16((params
->txop
* 32));
1222 ctx
->qos_data
.def_qos_parm
.ac
[q
].reserved1
= 0;
1224 mutex_unlock(&priv
->mutex
);
1226 IWL_DEBUG_MAC80211(priv
, "leave\n");
1230 static int iwlagn_mac_tx_last_beacon(struct ieee80211_hw
*hw
)
1232 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1234 return priv
->ibss_manager
== IWL_IBSS_MANAGER
;
1237 static int iwl_set_mode(struct iwl_priv
*priv
, struct iwl_rxon_context
*ctx
)
1239 iwl_connection_init_rx_config(priv
, ctx
);
1241 iwlagn_set_rxon_chain(priv
, ctx
);
1243 return iwlagn_commit_rxon(priv
, ctx
);
1246 static int iwl_setup_interface(struct iwl_priv
*priv
,
1247 struct iwl_rxon_context
*ctx
)
1249 struct ieee80211_vif
*vif
= ctx
->vif
;
1252 lockdep_assert_held(&priv
->mutex
);
1255 * This variable will be correct only when there's just
1256 * a single context, but all code using it is for hardware
1257 * that supports only one context.
1259 priv
->iw_mode
= vif
->type
;
1261 ctx
->is_active
= true;
1263 err
= iwl_set_mode(priv
, ctx
);
1265 if (!ctx
->always_active
)
1266 ctx
->is_active
= false;
1270 if (priv
->lib
->bt_params
&& priv
->lib
->bt_params
->advanced_bt_coexist
&&
1271 vif
->type
== NL80211_IFTYPE_ADHOC
) {
1273 * pretend to have high BT traffic as long as we
1274 * are operating in IBSS mode, as this will cause
1275 * the rate scaling etc. to behave as intended.
1277 priv
->bt_traffic_load
= IWL_BT_COEX_TRAFFIC_LOAD_HIGH
;
1280 /* set up queue mappings */
1281 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
1282 vif
->hw_queue
[ac
] = ctx
->ac_to_queue
[ac
];
1284 if (vif
->type
== NL80211_IFTYPE_AP
)
1285 vif
->cab_queue
= ctx
->mcast_queue
;
1287 vif
->cab_queue
= IEEE80211_INVAL_HW_QUEUE
;
1292 static int iwlagn_mac_add_interface(struct ieee80211_hw
*hw
,
1293 struct ieee80211_vif
*vif
)
1295 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1296 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
1297 struct iwl_rxon_context
*tmp
, *ctx
= NULL
;
1299 enum nl80211_iftype viftype
= ieee80211_vif_type_p2p(vif
);
1302 IWL_DEBUG_MAC80211(priv
, "enter: type %d, addr %pM\n",
1303 viftype
, vif
->addr
);
1305 mutex_lock(&priv
->mutex
);
1307 if (!iwl_is_ready_rf(priv
)) {
1308 IWL_WARN(priv
, "Try to add interface when device not ready\n");
1313 for_each_context(priv
, tmp
) {
1314 u32 possible_modes
=
1315 tmp
->interface_modes
| tmp
->exclusive_interface_modes
;
1318 /* On reset we need to add the same interface again */
1319 if (tmp
->vif
== vif
) {
1325 /* check if this busy context is exclusive */
1326 if (tmp
->exclusive_interface_modes
&
1327 BIT(tmp
->vif
->type
)) {
1334 if (!(possible_modes
& BIT(viftype
)))
1337 /* have maybe usable context w/o interface */
1347 vif_priv
->ctx
= ctx
;
1351 * In SNIFFER device type, the firmware reports the FCS to
1352 * the host, rather than snipping it off. Unfortunately,
1353 * mac80211 doesn't (yet) provide a per-packet flag for
1354 * this, so that we have to set the hardware flag based
1355 * on the interfaces added. As the monitor interface can
1356 * only be present by itself, and will be removed before
1357 * other interfaces are added, this is safe.
1359 if (vif
->type
== NL80211_IFTYPE_MONITOR
)
1360 ieee80211_hw_set(priv
->hw
, RX_INCLUDES_FCS
);
1362 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS
, priv
->hw
->flags
);
1364 err
= iwl_setup_interface(priv
, ctx
);
1369 priv
->iw_mode
= NL80211_IFTYPE_STATION
;
1371 mutex_unlock(&priv
->mutex
);
1373 IWL_DEBUG_MAC80211(priv
, "leave\n");
1377 static void iwl_teardown_interface(struct iwl_priv
*priv
,
1378 struct ieee80211_vif
*vif
,
1381 struct iwl_rxon_context
*ctx
= iwl_rxon_ctx_from_vif(vif
);
1383 lockdep_assert_held(&priv
->mutex
);
1385 if (priv
->scan_vif
== vif
) {
1386 iwl_scan_cancel_timeout(priv
, 200);
1387 iwl_force_scan_end(priv
);
1391 iwl_set_mode(priv
, ctx
);
1392 if (!ctx
->always_active
)
1393 ctx
->is_active
= false;
1397 * When removing the IBSS interface, overwrite the
1398 * BT traffic load with the stored one from the last
1399 * notification, if any. If this is a device that
1400 * doesn't implement this, this has no effect since
1401 * both values are the same and zero.
1403 if (vif
->type
== NL80211_IFTYPE_ADHOC
)
1404 priv
->bt_traffic_load
= priv
->last_bt_traffic_load
;
1407 static void iwlagn_mac_remove_interface(struct ieee80211_hw
*hw
,
1408 struct ieee80211_vif
*vif
)
1410 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1411 struct iwl_rxon_context
*ctx
= iwl_rxon_ctx_from_vif(vif
);
1413 IWL_DEBUG_MAC80211(priv
, "enter\n");
1415 mutex_lock(&priv
->mutex
);
1417 WARN_ON(ctx
->vif
!= vif
);
1420 iwl_teardown_interface(priv
, vif
, false);
1422 mutex_unlock(&priv
->mutex
);
1424 IWL_DEBUG_MAC80211(priv
, "leave\n");
1428 static int iwlagn_mac_change_interface(struct ieee80211_hw
*hw
,
1429 struct ieee80211_vif
*vif
,
1430 enum nl80211_iftype newtype
, bool newp2p
)
1432 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1433 struct iwl_rxon_context
*ctx
, *tmp
;
1434 enum nl80211_iftype newviftype
= newtype
;
1435 u32 interface_modes
;
1438 IWL_DEBUG_MAC80211(priv
, "enter\n");
1440 newtype
= ieee80211_iftype_p2p(newtype
, newp2p
);
1442 mutex_lock(&priv
->mutex
);
1444 ctx
= iwl_rxon_ctx_from_vif(vif
);
1447 * To simplify this code, only support changes on the
1448 * BSS context. The PAN context is usually reassigned
1449 * by creating/removing P2P interfaces anyway.
1451 if (ctx
->ctxid
!= IWL_RXON_CTX_BSS
) {
1456 if (!ctx
->vif
|| !iwl_is_ready_rf(priv
)) {
1458 * Huh? But wait ... this can maybe happen when
1459 * we're in the middle of a firmware restart!
1465 /* Check if the switch is supported in the same context */
1466 interface_modes
= ctx
->interface_modes
| ctx
->exclusive_interface_modes
;
1467 if (!(interface_modes
& BIT(newtype
))) {
1472 if (ctx
->exclusive_interface_modes
& BIT(newtype
)) {
1473 for_each_context(priv
, tmp
) {
1477 if (!tmp
->is_active
)
1481 * The current mode switch would be exclusive, but
1482 * another context is active ... refuse the switch.
1490 iwl_teardown_interface(priv
, vif
, true);
1491 vif
->type
= newviftype
;
1493 err
= iwl_setup_interface(priv
, ctx
);
1496 * We've switched internally, but submitting to the
1497 * device may have failed for some reason. Mask this
1498 * error, because otherwise mac80211 will not switch
1499 * (and set the interface type back) and we'll be
1500 * out of sync with it.
1505 mutex_unlock(&priv
->mutex
);
1506 IWL_DEBUG_MAC80211(priv
, "leave\n");
1511 static int iwlagn_mac_hw_scan(struct ieee80211_hw
*hw
,
1512 struct ieee80211_vif
*vif
,
1513 struct ieee80211_scan_request
*hw_req
)
1515 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1516 struct cfg80211_scan_request
*req
= &hw_req
->req
;
1519 IWL_DEBUG_MAC80211(priv
, "enter\n");
1521 if (req
->n_channels
== 0)
1524 mutex_lock(&priv
->mutex
);
1527 * If an internal scan is in progress, just set
1528 * up the scan_request as per above.
1530 if (priv
->scan_type
!= IWL_SCAN_NORMAL
) {
1531 IWL_DEBUG_SCAN(priv
,
1532 "SCAN request during internal scan - defer\n");
1533 priv
->scan_request
= req
;
1534 priv
->scan_vif
= vif
;
1537 priv
->scan_request
= req
;
1538 priv
->scan_vif
= vif
;
1540 * mac80211 will only ask for one band at a time
1541 * so using channels[0] here is ok
1543 ret
= iwl_scan_initiate(priv
, vif
, IWL_SCAN_NORMAL
,
1544 req
->channels
[0]->band
);
1546 priv
->scan_request
= NULL
;
1547 priv
->scan_vif
= NULL
;
1551 IWL_DEBUG_MAC80211(priv
, "leave\n");
1553 mutex_unlock(&priv
->mutex
);
1558 static void iwl_sta_modify_ps_wake(struct iwl_priv
*priv
, int sta_id
)
1560 struct iwl_addsta_cmd cmd
= {
1561 .mode
= STA_CONTROL_MODIFY_MSK
,
1562 .station_flags_msk
= STA_FLG_PWR_SAVE_MSK
,
1563 .sta
.sta_id
= sta_id
,
1566 iwl_send_add_sta(priv
, &cmd
, CMD_ASYNC
);
1569 static void iwlagn_mac_sta_notify(struct ieee80211_hw
*hw
,
1570 struct ieee80211_vif
*vif
,
1571 enum sta_notify_cmd cmd
,
1572 struct ieee80211_sta
*sta
)
1574 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1575 struct iwl_station_priv
*sta_priv
= (void *)sta
->drv_priv
;
1578 IWL_DEBUG_MAC80211(priv
, "enter\n");
1581 case STA_NOTIFY_SLEEP
:
1582 WARN_ON(!sta_priv
->client
);
1583 sta_priv
->asleep
= true;
1584 if (atomic_read(&sta_priv
->pending_frames
) > 0)
1585 ieee80211_sta_block_awake(hw
, sta
, true);
1587 case STA_NOTIFY_AWAKE
:
1588 WARN_ON(!sta_priv
->client
);
1589 if (!sta_priv
->asleep
)
1591 sta_priv
->asleep
= false;
1592 sta_id
= iwl_sta_id(sta
);
1593 if (sta_id
!= IWL_INVALID_STATION
)
1594 iwl_sta_modify_ps_wake(priv
, sta_id
);
1599 IWL_DEBUG_MAC80211(priv
, "leave\n");
1602 const struct ieee80211_ops iwlagn_hw_ops
= {
1603 .tx
= iwlagn_mac_tx
,
1604 .start
= iwlagn_mac_start
,
1605 .stop
= iwlagn_mac_stop
,
1606 #ifdef CONFIG_PM_SLEEP
1607 .suspend
= iwlagn_mac_suspend
,
1608 .resume
= iwlagn_mac_resume
,
1609 .set_wakeup
= iwlagn_mac_set_wakeup
,
1611 .add_interface
= iwlagn_mac_add_interface
,
1612 .remove_interface
= iwlagn_mac_remove_interface
,
1613 .change_interface
= iwlagn_mac_change_interface
,
1614 .config
= iwlagn_mac_config
,
1615 .configure_filter
= iwlagn_configure_filter
,
1616 .set_key
= iwlagn_mac_set_key
,
1617 .update_tkip_key
= iwlagn_mac_update_tkip_key
,
1618 .set_rekey_data
= iwlagn_mac_set_rekey_data
,
1619 .conf_tx
= iwlagn_mac_conf_tx
,
1620 .bss_info_changed
= iwlagn_bss_info_changed
,
1621 .ampdu_action
= iwlagn_mac_ampdu_action
,
1622 .hw_scan
= iwlagn_mac_hw_scan
,
1623 .sta_notify
= iwlagn_mac_sta_notify
,
1624 .sta_state
= iwlagn_mac_sta_state
,
1625 .channel_switch
= iwlagn_mac_channel_switch
,
1626 .flush
= iwlagn_mac_flush
,
1627 .tx_last_beacon
= iwlagn_mac_tx_last_beacon
,
1628 .event_callback
= iwlagn_mac_event_callback
,
1629 .set_tim
= iwlagn_mac_set_tim
,
1632 /* This function both allocates and initializes hw and priv. */
1633 struct ieee80211_hw
*iwl_alloc_all(void)
1635 struct iwl_priv
*priv
;
1636 struct iwl_op_mode
*op_mode
;
1637 /* mac80211 allocates memory for this device instance, including
1638 * space for this driver's private structure */
1639 struct ieee80211_hw
*hw
;
1641 hw
= ieee80211_alloc_hw(sizeof(struct iwl_priv
) +
1642 sizeof(struct iwl_op_mode
), &iwlagn_hw_ops
);
1647 priv
= IWL_OP_MODE_GET_DVM(op_mode
);