1 /******************************************************************************
3 * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/slab.h>
33 #include <linux/dma-mapping.h>
34 #include <linux/delay.h>
35 #include <linux/sched.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/etherdevice.h>
39 #include <linux/if_arp.h>
41 #include <net/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_PERIOD
|
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
|
155 IEEE80211_HW_SCAN_WHILE_IDLE
;
157 hw
->offchannel_tx_hw_queue
= IWL_AUX_QUEUE
;
158 hw
->radiotap_mcs_details
|= IEEE80211_RADIOTAP_MCS_HAVE_FMT
;
161 * Including the following line will crash some AP's. This
162 * workaround removes the stimulus which causes the crash until
163 * the AP software can be fixed.
164 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
167 if (priv
->nvm_data
->sku_cap_11n_enable
)
168 hw
->flags
|= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS
|
169 IEEE80211_HW_SUPPORTS_STATIC_SMPS
;
172 * Enable 11w if advertised by firmware and software crypto
173 * is not enabled (as the firmware will interpret some mgmt
174 * packets, so enabling it with software crypto isn't safe)
176 if (priv
->fw
->ucode_capa
.flags
& IWL_UCODE_TLV_FLAGS_MFP
&&
177 !iwlwifi_mod_params
.sw_crypto
)
178 hw
->flags
|= IEEE80211_HW_MFP_CAPABLE
;
180 hw
->sta_data_size
= sizeof(struct iwl_station_priv
);
181 hw
->vif_data_size
= sizeof(struct iwl_vif_priv
);
183 for_each_context(priv
, ctx
) {
184 hw
->wiphy
->interface_modes
|= ctx
->interface_modes
;
185 hw
->wiphy
->interface_modes
|= ctx
->exclusive_interface_modes
;
188 BUILD_BUG_ON(NUM_IWL_RXON_CTX
!= 2);
190 if (hw
->wiphy
->interface_modes
& BIT(NL80211_IFTYPE_P2P_CLIENT
)) {
191 hw
->wiphy
->iface_combinations
= iwlagn_iface_combinations_p2p
;
192 hw
->wiphy
->n_iface_combinations
=
193 ARRAY_SIZE(iwlagn_iface_combinations_p2p
);
194 } else if (hw
->wiphy
->interface_modes
& BIT(NL80211_IFTYPE_AP
)) {
195 hw
->wiphy
->iface_combinations
=
196 iwlagn_iface_combinations_dualmode
;
197 hw
->wiphy
->n_iface_combinations
=
198 ARRAY_SIZE(iwlagn_iface_combinations_dualmode
);
201 hw
->wiphy
->max_remain_on_channel_duration
= 500;
203 hw
->wiphy
->flags
|= WIPHY_FLAG_CUSTOM_REGULATORY
|
204 WIPHY_FLAG_DISABLE_BEACON_HINTS
|
207 #ifdef CONFIG_PM_SLEEP
208 if (priv
->fw
->img
[IWL_UCODE_WOWLAN
].sec
[0].len
&&
209 priv
->trans
->ops
->wowlan_suspend
&&
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_wowlan_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 static int iwlagn_mac_resume(struct ieee80211_hw
*hw
)
446 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
447 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
448 struct ieee80211_vif
*vif
;
450 u32 base
, status
= 0xffffffff;
453 IWL_DEBUG_MAC80211(priv
, "enter\n");
454 mutex_lock(&priv
->mutex
);
456 iwl_write32(priv
->trans
, CSR_UCODE_DRV_GP1_CLR
,
457 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE
);
459 base
= priv
->device_pointers
.error_event_table
;
460 if (iwlagn_hw_valid_rtc_data_addr(base
)) {
461 spin_lock_irqsave(&priv
->trans
->reg_lock
, flags
);
462 ret
= iwl_grab_nic_access_silent(priv
->trans
);
463 if (likely(ret
== 0)) {
464 iwl_write32(priv
->trans
, HBUS_TARG_MEM_RADDR
, base
);
465 status
= iwl_read32(priv
->trans
, HBUS_TARG_MEM_RDAT
);
466 iwl_release_nic_access(priv
->trans
);
468 spin_unlock_irqrestore(&priv
->trans
->reg_lock
, flags
);
470 #ifdef CONFIG_IWLWIFI_DEBUGFS
472 const struct fw_img
*img
;
474 img
= &(priv
->fw
->img
[IWL_UCODE_WOWLAN
]);
475 if (!priv
->wowlan_sram
) {
477 kzalloc(img
->sec
[IWL_UCODE_SECTION_DATA
].len
,
481 if (priv
->wowlan_sram
)
482 _iwl_read_targ_mem_dwords(
483 priv
->trans
, 0x800000,
485 img
->sec
[IWL_UCODE_SECTION_DATA
].len
/ 4);
490 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
493 priv
->wowlan
= false;
495 iwlagn_prepare_restart(priv
);
497 memset((void *)&ctx
->active
, 0, sizeof(ctx
->active
));
498 iwl_connection_init_rx_config(priv
, ctx
);
499 iwlagn_set_rxon_chain(priv
, ctx
);
501 mutex_unlock(&priv
->mutex
);
502 IWL_DEBUG_MAC80211(priv
, "leave\n");
504 ieee80211_resume_disconnect(vif
);
509 static void iwlagn_mac_set_wakeup(struct ieee80211_hw
*hw
, bool enabled
)
511 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
513 device_set_wakeup_enable(priv
->trans
->dev
, enabled
);
517 static void iwlagn_mac_tx(struct ieee80211_hw
*hw
,
518 struct ieee80211_tx_control
*control
,
521 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
523 IWL_DEBUG_TX(priv
, "dev->xmit(%d bytes) at rate 0x%02x\n", skb
->len
,
524 ieee80211_get_tx_rate(hw
, IEEE80211_SKB_CB(skb
))->bitrate
);
526 if (iwlagn_tx_skb(priv
, control
->sta
, skb
))
527 ieee80211_free_txskb(hw
, skb
);
530 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw
*hw
,
531 struct ieee80211_vif
*vif
,
532 struct ieee80211_key_conf
*keyconf
,
533 struct ieee80211_sta
*sta
,
534 u32 iv32
, u16
*phase1key
)
536 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
538 iwl_update_tkip_key(priv
, vif
, keyconf
, sta
, iv32
, phase1key
);
541 static int iwlagn_mac_set_key(struct ieee80211_hw
*hw
, enum set_key_cmd cmd
,
542 struct ieee80211_vif
*vif
,
543 struct ieee80211_sta
*sta
,
544 struct ieee80211_key_conf
*key
)
546 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
547 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
548 struct iwl_rxon_context
*ctx
= vif_priv
->ctx
;
550 bool is_default_wep_key
= false;
552 IWL_DEBUG_MAC80211(priv
, "enter\n");
554 if (iwlwifi_mod_params
.sw_crypto
) {
555 IWL_DEBUG_MAC80211(priv
, "leave - hwcrypto disabled\n");
559 switch (key
->cipher
) {
560 case WLAN_CIPHER_SUITE_TKIP
:
561 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_MMIC
;
563 case WLAN_CIPHER_SUITE_CCMP
:
564 key
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
571 * We could program these keys into the hardware as well, but we
572 * don't expect much multicast traffic in IBSS and having keys
573 * for more stations is probably more useful.
575 * Mark key TX-only and return 0.
577 if (vif
->type
== NL80211_IFTYPE_ADHOC
&&
578 !(key
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
)) {
579 key
->hw_key_idx
= WEP_INVALID_OFFSET
;
583 /* If they key was TX-only, accept deletion */
584 if (cmd
== DISABLE_KEY
&& key
->hw_key_idx
== WEP_INVALID_OFFSET
)
587 mutex_lock(&priv
->mutex
);
588 iwl_scan_cancel_timeout(priv
, 100);
590 BUILD_BUG_ON(WEP_INVALID_OFFSET
== IWLAGN_HW_KEY_DEFAULT
);
593 * If we are getting WEP group key and we didn't receive any key mapping
594 * so far, we are in legacy wep mode (group key only), otherwise we are
596 * In legacy wep mode, we use another host command to the uCode.
598 if ((key
->cipher
== WLAN_CIPHER_SUITE_WEP40
||
599 key
->cipher
== WLAN_CIPHER_SUITE_WEP104
) && !sta
) {
601 is_default_wep_key
= !ctx
->key_mapping_keys
;
604 key
->hw_key_idx
== IWLAGN_HW_KEY_DEFAULT
;
610 if (is_default_wep_key
) {
611 ret
= iwl_set_default_wep_key(priv
, vif_priv
->ctx
, key
);
614 ret
= iwl_set_dynamic_key(priv
, vif_priv
->ctx
, key
, sta
);
617 * can't add key for RX, but we don't need it
618 * in the device for TX so still return 0
621 key
->hw_key_idx
= WEP_INVALID_OFFSET
;
624 IWL_DEBUG_MAC80211(priv
, "enable hwcrypto key\n");
627 if (is_default_wep_key
)
628 ret
= iwl_remove_default_wep_key(priv
, ctx
, key
);
630 ret
= iwl_remove_dynamic_key(priv
, ctx
, key
, sta
);
632 IWL_DEBUG_MAC80211(priv
, "disable hwcrypto key\n");
638 mutex_unlock(&priv
->mutex
);
639 IWL_DEBUG_MAC80211(priv
, "leave\n");
644 static int iwlagn_mac_ampdu_action(struct ieee80211_hw
*hw
,
645 struct ieee80211_vif
*vif
,
646 enum ieee80211_ampdu_mlme_action action
,
647 struct ieee80211_sta
*sta
, u16 tid
, u16
*ssn
,
650 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
652 struct iwl_station_priv
*sta_priv
= (void *) sta
->drv_priv
;
654 IWL_DEBUG_HT(priv
, "A-MPDU action on addr %pM tid %d\n",
657 if (!(priv
->nvm_data
->sku_cap_11n_enable
))
660 IWL_DEBUG_MAC80211(priv
, "enter\n");
661 mutex_lock(&priv
->mutex
);
664 case IEEE80211_AMPDU_RX_START
:
665 if (iwlwifi_mod_params
.disable_11n
& IWL_DISABLE_HT_RXAGG
)
667 IWL_DEBUG_HT(priv
, "start Rx\n");
668 ret
= iwl_sta_rx_agg_start(priv
, sta
, tid
, *ssn
);
670 case IEEE80211_AMPDU_RX_STOP
:
671 IWL_DEBUG_HT(priv
, "stop Rx\n");
672 ret
= iwl_sta_rx_agg_stop(priv
, sta
, tid
);
674 case IEEE80211_AMPDU_TX_START
:
675 if (!priv
->trans
->ops
->txq_enable
)
677 if (iwlwifi_mod_params
.disable_11n
& IWL_DISABLE_HT_TXAGG
)
679 IWL_DEBUG_HT(priv
, "start Tx\n");
680 ret
= iwlagn_tx_agg_start(priv
, vif
, sta
, tid
, ssn
);
682 case IEEE80211_AMPDU_TX_STOP
:
683 IWL_DEBUG_HT(priv
, "stop Tx\n");
684 ret
= iwlagn_tx_agg_stop(priv
, vif
, sta
, tid
);
685 if ((ret
== 0) && (priv
->agg_tids_count
> 0)) {
686 priv
->agg_tids_count
--;
687 IWL_DEBUG_HT(priv
, "priv->agg_tids_count = %u\n",
688 priv
->agg_tids_count
);
690 if (!priv
->agg_tids_count
&&
691 priv
->hw_params
.use_rts_for_aggregation
) {
693 * switch off RTS/CTS if it was previously enabled
695 sta_priv
->lq_sta
.lq
.general_params
.flags
&=
696 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK
;
697 iwl_send_lq_cmd(priv
, iwl_rxon_ctx_from_vif(vif
),
698 &sta_priv
->lq_sta
.lq
, CMD_ASYNC
, false);
701 case IEEE80211_AMPDU_TX_OPERATIONAL
:
702 ret
= iwlagn_tx_agg_oper(priv
, vif
, sta
, tid
, buf_size
);
705 mutex_unlock(&priv
->mutex
);
706 IWL_DEBUG_MAC80211(priv
, "leave\n");
710 static int iwlagn_mac_sta_add(struct ieee80211_hw
*hw
,
711 struct ieee80211_vif
*vif
,
712 struct ieee80211_sta
*sta
)
714 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
715 struct iwl_station_priv
*sta_priv
= (void *)sta
->drv_priv
;
716 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
717 bool is_ap
= vif
->type
== NL80211_IFTYPE_STATION
;
721 IWL_DEBUG_INFO(priv
, "proceeding to add station %pM\n",
723 sta_priv
->sta_id
= IWL_INVALID_STATION
;
725 atomic_set(&sta_priv
->pending_frames
, 0);
726 if (vif
->type
== NL80211_IFTYPE_AP
)
727 sta_priv
->client
= true;
729 ret
= iwl_add_station_common(priv
, vif_priv
->ctx
, sta
->addr
,
730 is_ap
, sta
, &sta_id
);
732 IWL_ERR(priv
, "Unable to add station %pM (%d)\n",
734 /* Should we return success if return code is EEXIST ? */
738 sta_priv
->sta_id
= sta_id
;
743 static int iwlagn_mac_sta_remove(struct ieee80211_hw
*hw
,
744 struct ieee80211_vif
*vif
,
745 struct ieee80211_sta
*sta
)
747 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
748 struct iwl_station_priv
*sta_priv
= (void *)sta
->drv_priv
;
751 IWL_DEBUG_INFO(priv
, "proceeding to remove station %pM\n", sta
->addr
);
753 if (vif
->type
== NL80211_IFTYPE_STATION
) {
755 * Station will be removed from device when the RXON
756 * is set to unassociated -- just deactivate it here
757 * to avoid re-programming it.
760 iwl_deactivate_station(priv
, sta_priv
->sta_id
, sta
->addr
);
762 ret
= iwl_remove_station(priv
, sta_priv
->sta_id
, sta
->addr
);
764 IWL_DEBUG_QUIET_RFKILL(priv
,
765 "Error removing station %pM\n", sta
->addr
);
770 static int iwlagn_mac_sta_state(struct ieee80211_hw
*hw
,
771 struct ieee80211_vif
*vif
,
772 struct ieee80211_sta
*sta
,
773 enum ieee80211_sta_state old_state
,
774 enum ieee80211_sta_state new_state
)
776 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
777 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
779 NONE
, ADD
, REMOVE
, HT_RATE_INIT
, ADD_RATE_INIT
,
783 IWL_DEBUG_MAC80211(priv
, "station %pM state change %d->%d\n",
784 sta
->addr
, old_state
, new_state
);
786 mutex_lock(&priv
->mutex
);
787 if (vif
->type
== NL80211_IFTYPE_STATION
) {
788 if (old_state
== IEEE80211_STA_NOTEXIST
&&
789 new_state
== IEEE80211_STA_NONE
)
791 else if (old_state
== IEEE80211_STA_NONE
&&
792 new_state
== IEEE80211_STA_NOTEXIST
)
794 else if (old_state
== IEEE80211_STA_AUTH
&&
795 new_state
== IEEE80211_STA_ASSOC
)
798 if (old_state
== IEEE80211_STA_AUTH
&&
799 new_state
== IEEE80211_STA_ASSOC
)
801 else if (old_state
== IEEE80211_STA_ASSOC
&&
802 new_state
== IEEE80211_STA_AUTH
)
808 ret
= iwlagn_mac_sta_add(hw
, vif
, sta
);
812 * Clear the in-progress flag, the AP station entry was added
813 * but we'll initialize LQ only when we've associated (which
814 * would also clear the in-progress flag). This is necessary
815 * in case we never initialize LQ because association fails.
817 spin_lock_bh(&priv
->sta_lock
);
818 priv
->stations
[iwl_sta_id(sta
)].used
&=
819 ~IWL_STA_UCODE_INPROGRESS
;
820 spin_unlock_bh(&priv
->sta_lock
);
823 ret
= iwlagn_mac_sta_remove(hw
, vif
, sta
);
826 ret
= iwlagn_mac_sta_add(hw
, vif
, sta
);
829 /* Initialize rate scaling */
831 "Initializing rate scaling for station %pM\n",
833 iwl_rs_rate_init(priv
, sta
, iwl_sta_id(sta
));
837 /* Initialize rate scaling */
838 ret
= iwl_sta_update_ht(priv
, vif_priv
->ctx
, sta
);
842 "Initializing rate scaling for station %pM\n",
844 iwl_rs_rate_init(priv
, sta
, iwl_sta_id(sta
));
853 * mac80211 might WARN if we fail, but due the way we
854 * (badly) handle hard rfkill, we might fail here
856 if (iwl_is_rfkill(priv
))
859 mutex_unlock(&priv
->mutex
);
860 IWL_DEBUG_MAC80211(priv
, "leave\n");
865 static void iwlagn_mac_channel_switch(struct ieee80211_hw
*hw
,
866 struct ieee80211_channel_switch
*ch_switch
)
868 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
869 struct ieee80211_conf
*conf
= &hw
->conf
;
870 struct ieee80211_channel
*channel
= ch_switch
->channel
;
871 struct iwl_ht_config
*ht_conf
= &priv
->current_ht_config
;
874 * When we add support for multiple interfaces, we need to
875 * revisit this. The channel switch command in the device
876 * only affects the BSS context, but what does that really
877 * mean? And what if we get a CSA on the second interface?
878 * This needs a lot of work.
880 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
883 IWL_DEBUG_MAC80211(priv
, "enter\n");
885 mutex_lock(&priv
->mutex
);
887 if (iwl_is_rfkill(priv
))
890 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
) ||
891 test_bit(STATUS_SCANNING
, &priv
->status
) ||
892 test_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->status
))
895 if (!iwl_is_associated_ctx(ctx
))
898 if (!priv
->lib
->set_channel_switch
)
901 ch
= channel
->hw_value
;
902 if (le16_to_cpu(ctx
->active
.channel
) == ch
)
905 priv
->current_ht_config
.smps
= conf
->smps_mode
;
907 /* Configure HT40 channels */
908 ctx
->ht
.enabled
= conf_is_ht(conf
);
910 iwlagn_config_ht40(conf
, ctx
);
912 ctx
->ht
.is_40mhz
= false;
914 if ((le16_to_cpu(ctx
->staging
.channel
) != ch
))
915 ctx
->staging
.flags
= 0;
917 iwl_set_rxon_channel(priv
, channel
, ctx
);
918 iwl_set_rxon_ht(priv
, ht_conf
);
919 iwl_set_flags_for_band(priv
, ctx
, channel
->band
, ctx
->vif
);
922 * at this point, staging_rxon has the
923 * configuration for channel switch
925 set_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->status
);
926 priv
->switch_channel
= cpu_to_le16(ch
);
927 if (priv
->lib
->set_channel_switch(priv
, ch_switch
)) {
928 clear_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->status
);
929 priv
->switch_channel
= 0;
930 ieee80211_chswitch_done(ctx
->vif
, false);
934 mutex_unlock(&priv
->mutex
);
935 IWL_DEBUG_MAC80211(priv
, "leave\n");
938 void iwl_chswitch_done(struct iwl_priv
*priv
, bool is_success
)
942 * See iwlagn_mac_channel_switch.
944 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
946 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
949 if (test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->status
))
950 ieee80211_chswitch_done(ctx
->vif
, is_success
);
953 static void iwlagn_configure_filter(struct ieee80211_hw
*hw
,
954 unsigned int changed_flags
,
955 unsigned int *total_flags
,
958 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
959 __le32 filter_or
= 0, filter_nand
= 0;
960 struct iwl_rxon_context
*ctx
;
962 #define CHK(test, flag) do { \
963 if (*total_flags & (test)) \
964 filter_or |= (flag); \
966 filter_nand |= (flag); \
969 IWL_DEBUG_MAC80211(priv
, "Enter: changed: 0x%x, total: 0x%x\n",
970 changed_flags
, *total_flags
);
972 CHK(FIF_OTHER_BSS
| FIF_PROMISC_IN_BSS
, RXON_FILTER_PROMISC_MSK
);
973 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
974 CHK(FIF_CONTROL
, RXON_FILTER_CTL2HOST_MSK
| RXON_FILTER_PROMISC_MSK
);
975 CHK(FIF_BCN_PRBRESP_PROMISC
, RXON_FILTER_BCON_AWARE_MSK
);
979 mutex_lock(&priv
->mutex
);
981 for_each_context(priv
, ctx
) {
982 ctx
->staging
.filter_flags
&= ~filter_nand
;
983 ctx
->staging
.filter_flags
|= filter_or
;
986 * Not committing directly because hardware can perform a scan,
987 * but we'll eventually commit the filter flags change anyway.
991 mutex_unlock(&priv
->mutex
);
994 * Receiving all multicast frames is always enabled by the
995 * default flags setup in iwl_connection_init_rx_config()
996 * since we currently do not support programming multicast
997 * filters into the device.
999 *total_flags
&= FIF_OTHER_BSS
| FIF_ALLMULTI
| FIF_PROMISC_IN_BSS
|
1000 FIF_BCN_PRBRESP_PROMISC
| FIF_CONTROL
;
1003 static void iwlagn_mac_flush(struct ieee80211_hw
*hw
, bool drop
)
1005 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1007 mutex_lock(&priv
->mutex
);
1008 IWL_DEBUG_MAC80211(priv
, "enter\n");
1010 if (test_bit(STATUS_EXIT_PENDING
, &priv
->status
)) {
1011 IWL_DEBUG_TX(priv
, "Aborting flush due to device shutdown\n");
1014 if (iwl_is_rfkill(priv
)) {
1015 IWL_DEBUG_TX(priv
, "Aborting flush due to RF Kill\n");
1020 * mac80211 will not push any more frames for transmit
1021 * until the flush is completed
1024 IWL_DEBUG_MAC80211(priv
, "send flush command\n");
1025 if (iwlagn_txfifo_flush(priv
)) {
1026 IWL_ERR(priv
, "flush request fail\n");
1030 IWL_DEBUG_MAC80211(priv
, "wait transmit/flush all frames\n");
1031 iwl_trans_wait_tx_queue_empty(priv
->trans
);
1033 mutex_unlock(&priv
->mutex
);
1034 IWL_DEBUG_MAC80211(priv
, "leave\n");
1037 static int iwlagn_mac_remain_on_channel(struct ieee80211_hw
*hw
,
1038 struct ieee80211_vif
*vif
,
1039 struct ieee80211_channel
*channel
,
1042 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1043 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_PAN
];
1046 if (!(priv
->valid_contexts
& BIT(IWL_RXON_CTX_PAN
)))
1049 if (!(ctx
->interface_modes
& BIT(NL80211_IFTYPE_P2P_CLIENT
)))
1052 IWL_DEBUG_MAC80211(priv
, "enter\n");
1053 mutex_lock(&priv
->mutex
);
1055 if (test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
1056 /* mac80211 should not scan while ROC or ROC while scanning */
1057 if (WARN_ON_ONCE(priv
->scan_type
!= IWL_SCAN_RADIO_RESET
)) {
1062 iwl_scan_cancel_timeout(priv
, 100);
1064 if (test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
1070 priv
->hw_roc_channel
= channel
;
1071 /* convert from ms to TU */
1072 priv
->hw_roc_duration
= DIV_ROUND_UP(1000 * duration
, 1024);
1073 priv
->hw_roc_start_notified
= false;
1074 cancel_delayed_work(&priv
->hw_roc_disable_work
);
1076 if (!ctx
->is_active
) {
1077 static const struct iwl_qos_info default_qos_data
= {
1080 .cw_min
= cpu_to_le16(3),
1081 .cw_max
= cpu_to_le16(7),
1083 .edca_txop
= cpu_to_le16(1504),
1086 .cw_min
= cpu_to_le16(7),
1087 .cw_max
= cpu_to_le16(15),
1089 .edca_txop
= cpu_to_le16(3008),
1092 .cw_min
= cpu_to_le16(15),
1093 .cw_max
= cpu_to_le16(1023),
1097 .cw_min
= cpu_to_le16(15),
1098 .cw_max
= cpu_to_le16(1023),
1104 ctx
->is_active
= true;
1105 ctx
->qos_data
= default_qos_data
;
1106 ctx
->staging
.dev_type
= RXON_DEV_TYPE_P2P
;
1107 memcpy(ctx
->staging
.node_addr
,
1108 priv
->contexts
[IWL_RXON_CTX_BSS
].staging
.node_addr
,
1110 memcpy(ctx
->staging
.bssid_addr
,
1111 priv
->contexts
[IWL_RXON_CTX_BSS
].staging
.node_addr
,
1113 err
= iwlagn_commit_rxon(priv
, ctx
);
1116 ctx
->staging
.filter_flags
|= RXON_FILTER_ASSOC_MSK
|
1117 RXON_FILTER_PROMISC_MSK
|
1118 RXON_FILTER_CTL2HOST_MSK
;
1120 err
= iwlagn_commit_rxon(priv
, ctx
);
1122 iwlagn_disable_roc(priv
);
1125 priv
->hw_roc_setup
= true;
1128 err
= iwl_scan_initiate(priv
, ctx
->vif
, IWL_SCAN_ROC
, channel
->band
);
1130 iwlagn_disable_roc(priv
);
1133 mutex_unlock(&priv
->mutex
);
1134 IWL_DEBUG_MAC80211(priv
, "leave\n");
1139 static int iwlagn_mac_cancel_remain_on_channel(struct ieee80211_hw
*hw
)
1141 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1143 if (!(priv
->valid_contexts
& BIT(IWL_RXON_CTX_PAN
)))
1146 IWL_DEBUG_MAC80211(priv
, "enter\n");
1147 mutex_lock(&priv
->mutex
);
1148 iwl_scan_cancel_timeout(priv
, priv
->hw_roc_duration
);
1149 iwlagn_disable_roc(priv
);
1150 mutex_unlock(&priv
->mutex
);
1151 IWL_DEBUG_MAC80211(priv
, "leave\n");
1156 static void iwlagn_mac_rssi_callback(struct ieee80211_hw
*hw
,
1157 enum ieee80211_rssi_event rssi_event
)
1159 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1161 IWL_DEBUG_MAC80211(priv
, "enter\n");
1162 mutex_lock(&priv
->mutex
);
1164 if (priv
->cfg
->bt_params
&&
1165 priv
->cfg
->bt_params
->advanced_bt_coexist
) {
1166 if (rssi_event
== RSSI_EVENT_LOW
)
1167 priv
->bt_enable_pspoll
= true;
1168 else if (rssi_event
== RSSI_EVENT_HIGH
)
1169 priv
->bt_enable_pspoll
= false;
1171 iwlagn_send_advance_bt_config(priv
);
1173 IWL_DEBUG_MAC80211(priv
, "Advanced BT coex disabled,"
1174 "ignoring RSSI callback\n");
1177 mutex_unlock(&priv
->mutex
);
1178 IWL_DEBUG_MAC80211(priv
, "leave\n");
1181 static int iwlagn_mac_set_tim(struct ieee80211_hw
*hw
,
1182 struct ieee80211_sta
*sta
, bool set
)
1184 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1186 queue_work(priv
->workqueue
, &priv
->beacon_update
);
1191 static int iwlagn_mac_conf_tx(struct ieee80211_hw
*hw
,
1192 struct ieee80211_vif
*vif
, u16 queue
,
1193 const struct ieee80211_tx_queue_params
*params
)
1195 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1196 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
1197 struct iwl_rxon_context
*ctx
= vif_priv
->ctx
;
1203 IWL_DEBUG_MAC80211(priv
, "enter\n");
1205 if (!iwl_is_ready_rf(priv
)) {
1206 IWL_DEBUG_MAC80211(priv
, "leave - RF not ready\n");
1210 if (queue
>= AC_NUM
) {
1211 IWL_DEBUG_MAC80211(priv
, "leave - queue >= AC_NUM %d\n", queue
);
1215 q
= AC_NUM
- 1 - queue
;
1217 mutex_lock(&priv
->mutex
);
1219 ctx
->qos_data
.def_qos_parm
.ac
[q
].cw_min
=
1220 cpu_to_le16(params
->cw_min
);
1221 ctx
->qos_data
.def_qos_parm
.ac
[q
].cw_max
=
1222 cpu_to_le16(params
->cw_max
);
1223 ctx
->qos_data
.def_qos_parm
.ac
[q
].aifsn
= params
->aifs
;
1224 ctx
->qos_data
.def_qos_parm
.ac
[q
].edca_txop
=
1225 cpu_to_le16((params
->txop
* 32));
1227 ctx
->qos_data
.def_qos_parm
.ac
[q
].reserved1
= 0;
1229 mutex_unlock(&priv
->mutex
);
1231 IWL_DEBUG_MAC80211(priv
, "leave\n");
1235 static int iwlagn_mac_tx_last_beacon(struct ieee80211_hw
*hw
)
1237 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1239 return priv
->ibss_manager
== IWL_IBSS_MANAGER
;
1242 static int iwl_set_mode(struct iwl_priv
*priv
, struct iwl_rxon_context
*ctx
)
1244 iwl_connection_init_rx_config(priv
, ctx
);
1246 iwlagn_set_rxon_chain(priv
, ctx
);
1248 return iwlagn_commit_rxon(priv
, ctx
);
1251 static int iwl_setup_interface(struct iwl_priv
*priv
,
1252 struct iwl_rxon_context
*ctx
)
1254 struct ieee80211_vif
*vif
= ctx
->vif
;
1257 lockdep_assert_held(&priv
->mutex
);
1260 * This variable will be correct only when there's just
1261 * a single context, but all code using it is for hardware
1262 * that supports only one context.
1264 priv
->iw_mode
= vif
->type
;
1266 ctx
->is_active
= true;
1268 err
= iwl_set_mode(priv
, ctx
);
1270 if (!ctx
->always_active
)
1271 ctx
->is_active
= false;
1275 if (priv
->cfg
->bt_params
&& priv
->cfg
->bt_params
->advanced_bt_coexist
&&
1276 vif
->type
== NL80211_IFTYPE_ADHOC
) {
1278 * pretend to have high BT traffic as long as we
1279 * are operating in IBSS mode, as this will cause
1280 * the rate scaling etc. to behave as intended.
1282 priv
->bt_traffic_load
= IWL_BT_COEX_TRAFFIC_LOAD_HIGH
;
1285 /* set up queue mappings */
1286 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
1287 vif
->hw_queue
[ac
] = ctx
->ac_to_queue
[ac
];
1289 if (vif
->type
== NL80211_IFTYPE_AP
)
1290 vif
->cab_queue
= ctx
->mcast_queue
;
1292 vif
->cab_queue
= IEEE80211_INVAL_HW_QUEUE
;
1297 static int iwlagn_mac_add_interface(struct ieee80211_hw
*hw
,
1298 struct ieee80211_vif
*vif
)
1300 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1301 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
1302 struct iwl_rxon_context
*tmp
, *ctx
= NULL
;
1304 enum nl80211_iftype viftype
= ieee80211_vif_type_p2p(vif
);
1307 IWL_DEBUG_MAC80211(priv
, "enter: type %d, addr %pM\n",
1308 viftype
, vif
->addr
);
1310 cancel_delayed_work_sync(&priv
->hw_roc_disable_work
);
1312 mutex_lock(&priv
->mutex
);
1314 iwlagn_disable_roc(priv
);
1316 if (!iwl_is_ready_rf(priv
)) {
1317 IWL_WARN(priv
, "Try to add interface when device not ready\n");
1322 for_each_context(priv
, tmp
) {
1323 u32 possible_modes
=
1324 tmp
->interface_modes
| tmp
->exclusive_interface_modes
;
1327 /* On reset we need to add the same interface again */
1328 if (tmp
->vif
== vif
) {
1334 /* check if this busy context is exclusive */
1335 if (tmp
->exclusive_interface_modes
&
1336 BIT(tmp
->vif
->type
)) {
1343 if (!(possible_modes
& BIT(viftype
)))
1346 /* have maybe usable context w/o interface */
1356 vif_priv
->ctx
= ctx
;
1360 * In SNIFFER device type, the firmware reports the FCS to
1361 * the host, rather than snipping it off. Unfortunately,
1362 * mac80211 doesn't (yet) provide a per-packet flag for
1363 * this, so that we have to set the hardware flag based
1364 * on the interfaces added. As the monitor interface can
1365 * only be present by itself, and will be removed before
1366 * other interfaces are added, this is safe.
1368 if (vif
->type
== NL80211_IFTYPE_MONITOR
)
1369 priv
->hw
->flags
|= IEEE80211_HW_RX_INCLUDES_FCS
;
1371 priv
->hw
->flags
&= ~IEEE80211_HW_RX_INCLUDES_FCS
;
1373 err
= iwl_setup_interface(priv
, ctx
);
1378 priv
->iw_mode
= NL80211_IFTYPE_STATION
;
1380 mutex_unlock(&priv
->mutex
);
1382 IWL_DEBUG_MAC80211(priv
, "leave\n");
1386 static void iwl_teardown_interface(struct iwl_priv
*priv
,
1387 struct ieee80211_vif
*vif
,
1390 struct iwl_rxon_context
*ctx
= iwl_rxon_ctx_from_vif(vif
);
1392 lockdep_assert_held(&priv
->mutex
);
1394 if (priv
->scan_vif
== vif
) {
1395 iwl_scan_cancel_timeout(priv
, 200);
1396 iwl_force_scan_end(priv
);
1400 iwl_set_mode(priv
, ctx
);
1401 if (!ctx
->always_active
)
1402 ctx
->is_active
= false;
1406 * When removing the IBSS interface, overwrite the
1407 * BT traffic load with the stored one from the last
1408 * notification, if any. If this is a device that
1409 * doesn't implement this, this has no effect since
1410 * both values are the same and zero.
1412 if (vif
->type
== NL80211_IFTYPE_ADHOC
)
1413 priv
->bt_traffic_load
= priv
->last_bt_traffic_load
;
1416 static void iwlagn_mac_remove_interface(struct ieee80211_hw
*hw
,
1417 struct ieee80211_vif
*vif
)
1419 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1420 struct iwl_rxon_context
*ctx
= iwl_rxon_ctx_from_vif(vif
);
1422 IWL_DEBUG_MAC80211(priv
, "enter\n");
1424 mutex_lock(&priv
->mutex
);
1426 if (WARN_ON(ctx
->vif
!= vif
)) {
1427 struct iwl_rxon_context
*tmp
;
1428 IWL_ERR(priv
, "ctx->vif = %p, vif = %p\n", ctx
->vif
, vif
);
1429 for_each_context(priv
, tmp
)
1430 IWL_ERR(priv
, "\tID = %d:\tctx = %p\tctx->vif = %p\n",
1431 tmp
->ctxid
, tmp
, tmp
->vif
);
1435 iwl_teardown_interface(priv
, vif
, false);
1437 mutex_unlock(&priv
->mutex
);
1439 IWL_DEBUG_MAC80211(priv
, "leave\n");
1443 static int iwlagn_mac_change_interface(struct ieee80211_hw
*hw
,
1444 struct ieee80211_vif
*vif
,
1445 enum nl80211_iftype newtype
, bool newp2p
)
1447 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1448 struct iwl_rxon_context
*ctx
, *tmp
;
1449 enum nl80211_iftype newviftype
= newtype
;
1450 u32 interface_modes
;
1453 IWL_DEBUG_MAC80211(priv
, "enter\n");
1455 newtype
= ieee80211_iftype_p2p(newtype
, newp2p
);
1457 mutex_lock(&priv
->mutex
);
1459 ctx
= iwl_rxon_ctx_from_vif(vif
);
1462 * To simplify this code, only support changes on the
1463 * BSS context. The PAN context is usually reassigned
1464 * by creating/removing P2P interfaces anyway.
1466 if (ctx
->ctxid
!= IWL_RXON_CTX_BSS
) {
1471 if (!ctx
->vif
|| !iwl_is_ready_rf(priv
)) {
1473 * Huh? But wait ... this can maybe happen when
1474 * we're in the middle of a firmware restart!
1480 /* Check if the switch is supported in the same context */
1481 interface_modes
= ctx
->interface_modes
| ctx
->exclusive_interface_modes
;
1482 if (!(interface_modes
& BIT(newtype
))) {
1487 if (ctx
->exclusive_interface_modes
& BIT(newtype
)) {
1488 for_each_context(priv
, tmp
) {
1492 if (!tmp
->is_active
)
1496 * The current mode switch would be exclusive, but
1497 * another context is active ... refuse the switch.
1505 iwl_teardown_interface(priv
, vif
, true);
1506 vif
->type
= newviftype
;
1508 err
= iwl_setup_interface(priv
, ctx
);
1511 * We've switched internally, but submitting to the
1512 * device may have failed for some reason. Mask this
1513 * error, because otherwise mac80211 will not switch
1514 * (and set the interface type back) and we'll be
1515 * out of sync with it.
1520 mutex_unlock(&priv
->mutex
);
1521 IWL_DEBUG_MAC80211(priv
, "leave\n");
1526 static int iwlagn_mac_hw_scan(struct ieee80211_hw
*hw
,
1527 struct ieee80211_vif
*vif
,
1528 struct cfg80211_scan_request
*req
)
1530 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1533 IWL_DEBUG_MAC80211(priv
, "enter\n");
1535 if (req
->n_channels
== 0)
1538 mutex_lock(&priv
->mutex
);
1541 * If an internal scan is in progress, just set
1542 * up the scan_request as per above.
1544 if (priv
->scan_type
!= IWL_SCAN_NORMAL
) {
1545 IWL_DEBUG_SCAN(priv
,
1546 "SCAN request during internal scan - defer\n");
1547 priv
->scan_request
= req
;
1548 priv
->scan_vif
= vif
;
1551 priv
->scan_request
= req
;
1552 priv
->scan_vif
= vif
;
1554 * mac80211 will only ask for one band at a time
1555 * so using channels[0] here is ok
1557 ret
= iwl_scan_initiate(priv
, vif
, IWL_SCAN_NORMAL
,
1558 req
->channels
[0]->band
);
1560 priv
->scan_request
= NULL
;
1561 priv
->scan_vif
= NULL
;
1565 IWL_DEBUG_MAC80211(priv
, "leave\n");
1567 mutex_unlock(&priv
->mutex
);
1572 static void iwl_sta_modify_ps_wake(struct iwl_priv
*priv
, int sta_id
)
1574 struct iwl_addsta_cmd cmd
= {
1575 .mode
= STA_CONTROL_MODIFY_MSK
,
1576 .station_flags_msk
= STA_FLG_PWR_SAVE_MSK
,
1577 .sta
.sta_id
= sta_id
,
1580 iwl_send_add_sta(priv
, &cmd
, CMD_ASYNC
);
1583 static void iwlagn_mac_sta_notify(struct ieee80211_hw
*hw
,
1584 struct ieee80211_vif
*vif
,
1585 enum sta_notify_cmd cmd
,
1586 struct ieee80211_sta
*sta
)
1588 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1589 struct iwl_station_priv
*sta_priv
= (void *)sta
->drv_priv
;
1592 IWL_DEBUG_MAC80211(priv
, "enter\n");
1595 case STA_NOTIFY_SLEEP
:
1596 WARN_ON(!sta_priv
->client
);
1597 sta_priv
->asleep
= true;
1598 if (atomic_read(&sta_priv
->pending_frames
) > 0)
1599 ieee80211_sta_block_awake(hw
, sta
, true);
1601 case STA_NOTIFY_AWAKE
:
1602 WARN_ON(!sta_priv
->client
);
1603 if (!sta_priv
->asleep
)
1605 sta_priv
->asleep
= false;
1606 sta_id
= iwl_sta_id(sta
);
1607 if (sta_id
!= IWL_INVALID_STATION
)
1608 iwl_sta_modify_ps_wake(priv
, sta_id
);
1613 IWL_DEBUG_MAC80211(priv
, "leave\n");
1616 struct ieee80211_ops iwlagn_hw_ops
= {
1617 .tx
= iwlagn_mac_tx
,
1618 .start
= iwlagn_mac_start
,
1619 .stop
= iwlagn_mac_stop
,
1620 #ifdef CONFIG_PM_SLEEP
1621 .suspend
= iwlagn_mac_suspend
,
1622 .resume
= iwlagn_mac_resume
,
1623 .set_wakeup
= iwlagn_mac_set_wakeup
,
1625 .add_interface
= iwlagn_mac_add_interface
,
1626 .remove_interface
= iwlagn_mac_remove_interface
,
1627 .change_interface
= iwlagn_mac_change_interface
,
1628 .config
= iwlagn_mac_config
,
1629 .configure_filter
= iwlagn_configure_filter
,
1630 .set_key
= iwlagn_mac_set_key
,
1631 .update_tkip_key
= iwlagn_mac_update_tkip_key
,
1632 .set_rekey_data
= iwlagn_mac_set_rekey_data
,
1633 .conf_tx
= iwlagn_mac_conf_tx
,
1634 .bss_info_changed
= iwlagn_bss_info_changed
,
1635 .ampdu_action
= iwlagn_mac_ampdu_action
,
1636 .hw_scan
= iwlagn_mac_hw_scan
,
1637 .sta_notify
= iwlagn_mac_sta_notify
,
1638 .sta_state
= iwlagn_mac_sta_state
,
1639 .channel_switch
= iwlagn_mac_channel_switch
,
1640 .flush
= iwlagn_mac_flush
,
1641 .tx_last_beacon
= iwlagn_mac_tx_last_beacon
,
1642 .remain_on_channel
= iwlagn_mac_remain_on_channel
,
1643 .cancel_remain_on_channel
= iwlagn_mac_cancel_remain_on_channel
,
1644 .rssi_callback
= iwlagn_mac_rssi_callback
,
1645 CFG80211_TESTMODE_CMD(iwlagn_mac_testmode_cmd
)
1646 CFG80211_TESTMODE_DUMP(iwlagn_mac_testmode_dump
)
1647 .set_tim
= iwlagn_mac_set_tim
,
1650 /* This function both allocates and initializes hw and priv. */
1651 struct ieee80211_hw
*iwl_alloc_all(void)
1653 struct iwl_priv
*priv
;
1654 struct iwl_op_mode
*op_mode
;
1655 /* mac80211 allocates memory for this device instance, including
1656 * space for this driver's private structure */
1657 struct ieee80211_hw
*hw
;
1659 hw
= ieee80211_alloc_hw(sizeof(struct iwl_priv
) +
1660 sizeof(struct iwl_op_mode
), &iwlagn_hw_ops
);
1665 priv
= IWL_OP_MODE_GET_DVM(op_mode
);