1 /******************************************************************************
3 * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
21 * Contact Information:
22 * Intel Linux Wireless <ilw@linux.intel.com>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25 *****************************************************************************/
30 #include "iwl-agn-calib.h"
31 #include "iwl-trans.h"
32 #include "iwl-shared.h"
34 static int iwlagn_disable_bss(struct iwl_priv
*priv
,
35 struct iwl_rxon_context
*ctx
,
36 struct iwl_rxon_cmd
*send
)
38 __le32 old_filter
= send
->filter_flags
;
41 send
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
42 ret
= iwl_dvm_send_cmd_pdu(priv
, ctx
->rxon_cmd
,
43 CMD_SYNC
, sizeof(*send
), send
);
45 send
->filter_flags
= old_filter
;
48 IWL_DEBUG_QUIET_RFKILL(priv
,
49 "Error clearing ASSOC_MSK on BSS (%d)\n", ret
);
54 static int iwlagn_disable_pan(struct iwl_priv
*priv
,
55 struct iwl_rxon_context
*ctx
,
56 struct iwl_rxon_cmd
*send
)
58 struct iwl_notification_wait disable_wait
;
59 __le32 old_filter
= send
->filter_flags
;
60 u8 old_dev_type
= send
->dev_type
;
63 iwl_init_notification_wait(&priv
->notif_wait
, &disable_wait
,
64 REPLY_WIPAN_DEACTIVATION_COMPLETE
,
67 send
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
68 send
->dev_type
= RXON_DEV_TYPE_P2P
;
69 ret
= iwl_dvm_send_cmd_pdu(priv
, ctx
->rxon_cmd
,
70 CMD_SYNC
, sizeof(*send
), send
);
72 send
->filter_flags
= old_filter
;
73 send
->dev_type
= old_dev_type
;
76 IWL_ERR(priv
, "Error disabling PAN (%d)\n", ret
);
77 iwl_remove_notification(&priv
->notif_wait
, &disable_wait
);
79 ret
= iwl_wait_notification(&priv
->notif_wait
,
82 IWL_ERR(priv
, "Timed out waiting for PAN disable\n");
88 static int iwlagn_disconn_pan(struct iwl_priv
*priv
,
89 struct iwl_rxon_context
*ctx
,
90 struct iwl_rxon_cmd
*send
)
92 __le32 old_filter
= send
->filter_flags
;
95 send
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
96 ret
= iwl_dvm_send_cmd_pdu(priv
, ctx
->rxon_cmd
, CMD_SYNC
,
99 send
->filter_flags
= old_filter
;
104 static void iwlagn_update_qos(struct iwl_priv
*priv
,
105 struct iwl_rxon_context
*ctx
)
112 ctx
->qos_data
.def_qos_parm
.qos_flags
= 0;
114 if (ctx
->qos_data
.qos_active
)
115 ctx
->qos_data
.def_qos_parm
.qos_flags
|=
116 QOS_PARAM_FLG_UPDATE_EDCA_MSK
;
119 ctx
->qos_data
.def_qos_parm
.qos_flags
|= QOS_PARAM_FLG_TGN_MSK
;
121 IWL_DEBUG_INFO(priv
, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
122 ctx
->qos_data
.qos_active
,
123 ctx
->qos_data
.def_qos_parm
.qos_flags
);
125 ret
= iwl_dvm_send_cmd_pdu(priv
, ctx
->qos_cmd
, CMD_SYNC
,
126 sizeof(struct iwl_qosparam_cmd
),
127 &ctx
->qos_data
.def_qos_parm
);
129 IWL_DEBUG_QUIET_RFKILL(priv
, "Failed to update QoS\n");
132 static int iwlagn_update_beacon(struct iwl_priv
*priv
,
133 struct ieee80211_vif
*vif
)
135 lockdep_assert_held(&priv
->mutex
);
137 dev_kfree_skb(priv
->beacon_skb
);
138 priv
->beacon_skb
= ieee80211_beacon_get(priv
->hw
, vif
);
139 if (!priv
->beacon_skb
)
141 return iwlagn_send_beacon_cmd(priv
);
144 static int iwlagn_send_rxon_assoc(struct iwl_priv
*priv
,
145 struct iwl_rxon_context
*ctx
)
148 struct iwl_rxon_assoc_cmd rxon_assoc
;
149 const struct iwl_rxon_cmd
*rxon1
= &ctx
->staging
;
150 const struct iwl_rxon_cmd
*rxon2
= &ctx
->active
;
152 if ((rxon1
->flags
== rxon2
->flags
) &&
153 (rxon1
->filter_flags
== rxon2
->filter_flags
) &&
154 (rxon1
->cck_basic_rates
== rxon2
->cck_basic_rates
) &&
155 (rxon1
->ofdm_ht_single_stream_basic_rates
==
156 rxon2
->ofdm_ht_single_stream_basic_rates
) &&
157 (rxon1
->ofdm_ht_dual_stream_basic_rates
==
158 rxon2
->ofdm_ht_dual_stream_basic_rates
) &&
159 (rxon1
->ofdm_ht_triple_stream_basic_rates
==
160 rxon2
->ofdm_ht_triple_stream_basic_rates
) &&
161 (rxon1
->acquisition_data
== rxon2
->acquisition_data
) &&
162 (rxon1
->rx_chain
== rxon2
->rx_chain
) &&
163 (rxon1
->ofdm_basic_rates
== rxon2
->ofdm_basic_rates
)) {
164 IWL_DEBUG_INFO(priv
, "Using current RXON_ASSOC. Not resending.\n");
168 rxon_assoc
.flags
= ctx
->staging
.flags
;
169 rxon_assoc
.filter_flags
= ctx
->staging
.filter_flags
;
170 rxon_assoc
.ofdm_basic_rates
= ctx
->staging
.ofdm_basic_rates
;
171 rxon_assoc
.cck_basic_rates
= ctx
->staging
.cck_basic_rates
;
172 rxon_assoc
.reserved1
= 0;
173 rxon_assoc
.reserved2
= 0;
174 rxon_assoc
.reserved3
= 0;
175 rxon_assoc
.ofdm_ht_single_stream_basic_rates
=
176 ctx
->staging
.ofdm_ht_single_stream_basic_rates
;
177 rxon_assoc
.ofdm_ht_dual_stream_basic_rates
=
178 ctx
->staging
.ofdm_ht_dual_stream_basic_rates
;
179 rxon_assoc
.rx_chain_select_flags
= ctx
->staging
.rx_chain
;
180 rxon_assoc
.ofdm_ht_triple_stream_basic_rates
=
181 ctx
->staging
.ofdm_ht_triple_stream_basic_rates
;
182 rxon_assoc
.acquisition_data
= ctx
->staging
.acquisition_data
;
184 ret
= iwl_dvm_send_cmd_pdu(priv
, ctx
->rxon_assoc_cmd
,
185 CMD_ASYNC
, sizeof(rxon_assoc
), &rxon_assoc
);
189 static int iwlagn_rxon_disconn(struct iwl_priv
*priv
,
190 struct iwl_rxon_context
*ctx
)
193 struct iwl_rxon_cmd
*active
= (void *)&ctx
->active
;
195 if (ctx
->ctxid
== IWL_RXON_CTX_BSS
) {
196 ret
= iwlagn_disable_bss(priv
, ctx
, &ctx
->staging
);
198 ret
= iwlagn_disable_pan(priv
, ctx
, &ctx
->staging
);
202 ret
= iwl_send_rxon_timing(priv
, ctx
);
204 IWL_ERR(priv
, "Failed to send timing (%d)!\n", ret
);
207 ret
= iwlagn_disconn_pan(priv
, ctx
, &ctx
->staging
);
214 * Un-assoc RXON clears the station table and WEP
215 * keys, so we have to restore those afterwards.
217 iwl_clear_ucode_stations(priv
, ctx
);
218 /* update -- might need P2P now */
219 iwl_update_bcast_station(priv
, ctx
);
220 iwl_restore_stations(priv
, ctx
);
221 ret
= iwl_restore_default_wep_keys(priv
, ctx
);
223 IWL_ERR(priv
, "Failed to restore WEP keys (%d)\n", ret
);
227 memcpy(active
, &ctx
->staging
, sizeof(*active
));
231 static int iwlagn_rxon_connect(struct iwl_priv
*priv
,
232 struct iwl_rxon_context
*ctx
)
235 struct iwl_rxon_cmd
*active
= (void *)&ctx
->active
;
237 /* RXON timing must be before associated RXON */
238 if (ctx
->ctxid
== IWL_RXON_CTX_BSS
) {
239 ret
= iwl_send_rxon_timing(priv
, ctx
);
241 IWL_ERR(priv
, "Failed to send timing (%d)!\n", ret
);
245 /* QoS info may be cleared by previous un-assoc RXON */
246 iwlagn_update_qos(priv
, ctx
);
249 * We'll run into this code path when beaconing is
250 * enabled, but then we also need to send the beacon
253 if (ctx
->vif
&& (ctx
->vif
->type
== NL80211_IFTYPE_AP
)) {
254 ret
= iwlagn_update_beacon(priv
, ctx
->vif
);
257 "Error sending required beacon (%d)!\n",
263 priv
->start_calib
= 0;
265 * Apply the new configuration.
267 * Associated RXON doesn't clear the station table in uCode,
268 * so we don't need to restore stations etc. after this.
270 ret
= iwl_dvm_send_cmd_pdu(priv
, ctx
->rxon_cmd
, CMD_SYNC
,
271 sizeof(struct iwl_rxon_cmd
), &ctx
->staging
);
273 IWL_ERR(priv
, "Error setting new RXON (%d)\n", ret
);
276 memcpy(active
, &ctx
->staging
, sizeof(*active
));
278 /* IBSS beacon needs to be sent after setting assoc */
279 if (ctx
->vif
&& (ctx
->vif
->type
== NL80211_IFTYPE_ADHOC
))
280 if (iwlagn_update_beacon(priv
, ctx
->vif
))
281 IWL_ERR(priv
, "Error sending IBSS beacon\n");
282 iwl_init_sensitivity(priv
);
285 * If we issue a new RXON command which required a tune then
286 * we must send a new TXPOWER command or we won't be able to
289 * It's expected we set power here if channel is changing.
291 ret
= iwl_set_tx_power(priv
, priv
->tx_power_next
, true);
293 IWL_ERR(priv
, "Error sending TX power (%d)\n", ret
);
297 if (ctx
->vif
&& ctx
->vif
->type
== NL80211_IFTYPE_STATION
&&
298 cfg(priv
)->ht_params
&& cfg(priv
)->ht_params
->smps_mode
)
299 ieee80211_request_smps(ctx
->vif
,
300 cfg(priv
)->ht_params
->smps_mode
);
305 int iwlagn_set_pan_params(struct iwl_priv
*priv
)
307 struct iwl_wipan_params_cmd cmd
;
308 struct iwl_rxon_context
*ctx_bss
, *ctx_pan
;
309 int slot0
= 300, slot1
= 0;
312 if (priv
->shrd
->valid_contexts
== BIT(IWL_RXON_CTX_BSS
))
315 BUILD_BUG_ON(NUM_IWL_RXON_CTX
!= 2);
317 lockdep_assert_held(&priv
->mutex
);
319 ctx_bss
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
320 ctx_pan
= &priv
->contexts
[IWL_RXON_CTX_PAN
];
323 * If the PAN context is inactive, then we don't need
324 * to update the PAN parameters, the last thing we'll
325 * have done before it goes inactive is making the PAN
326 * parameters be WLAN-only.
328 if (!ctx_pan
->is_active
)
331 memset(&cmd
, 0, sizeof(cmd
));
333 /* only 2 slots are currently allowed */
336 cmd
.slots
[0].type
= 0; /* BSS */
337 cmd
.slots
[1].type
= 1; /* PAN */
339 if (priv
->hw_roc_setup
) {
340 /* both contexts must be used for this to happen */
341 slot1
= IWL_MIN_SLOT_TIME
;
343 } else if (ctx_bss
->vif
&& ctx_pan
->vif
) {
344 int bcnint
= ctx_pan
->beacon_int
;
345 int dtim
= ctx_pan
->vif
->bss_conf
.dtim_period
?: 1;
347 /* should be set, but seems unused?? */
348 cmd
.flags
|= cpu_to_le16(IWL_WIPAN_PARAMS_FLG_SLOTTED_MODE
);
350 if (ctx_pan
->vif
->type
== NL80211_IFTYPE_AP
&&
352 bcnint
!= ctx_bss
->beacon_int
) {
354 "beacon intervals don't match (%d, %d)\n",
355 ctx_bss
->beacon_int
, ctx_pan
->beacon_int
);
357 bcnint
= max_t(int, bcnint
,
358 ctx_bss
->beacon_int
);
360 bcnint
= DEFAULT_BEACON_INTERVAL
;
362 slot1
= bcnint
- slot0
;
364 if (test_bit(STATUS_SCAN_HW
, &priv
->status
) ||
365 (!ctx_bss
->vif
->bss_conf
.idle
&&
366 !ctx_bss
->vif
->bss_conf
.assoc
)) {
367 slot0
= dtim
* bcnint
* 3 - IWL_MIN_SLOT_TIME
;
368 slot1
= IWL_MIN_SLOT_TIME
;
369 } else if (!ctx_pan
->vif
->bss_conf
.idle
&&
370 !ctx_pan
->vif
->bss_conf
.assoc
) {
371 slot1
= dtim
* bcnint
* 3 - IWL_MIN_SLOT_TIME
;
372 slot0
= IWL_MIN_SLOT_TIME
;
374 } else if (ctx_pan
->vif
) {
376 slot1
= max_t(int, 1, ctx_pan
->vif
->bss_conf
.dtim_period
) *
378 slot1
= max_t(int, DEFAULT_BEACON_INTERVAL
, slot1
);
380 if (test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
381 slot0
= slot1
* 3 - IWL_MIN_SLOT_TIME
;
382 slot1
= IWL_MIN_SLOT_TIME
;
386 cmd
.slots
[0].width
= cpu_to_le16(slot0
);
387 cmd
.slots
[1].width
= cpu_to_le16(slot1
);
389 ret
= iwl_dvm_send_cmd_pdu(priv
, REPLY_WIPAN_PARAMS
, CMD_SYNC
,
392 IWL_ERR(priv
, "Error setting PAN parameters (%d)\n", ret
);
398 * iwlagn_commit_rxon - commit staging_rxon to hardware
400 * The RXON command in staging_rxon is committed to the hardware and
401 * the active_rxon structure is updated with the new data. This
402 * function correctly transitions out of the RXON_ASSOC_MSK state if
403 * a HW tune is required based on the RXON structure changes.
405 * The connect/disconnect flow should be as the following:
407 * 1. make sure send RXON command with association bit unset if not connect
408 * this should include the channel and the band for the candidate
410 * 2. Add Station before RXON association with the AP
411 * 3. RXON_timing has to send before RXON for connection
412 * 4. full RXON command - associated bit set
413 * 5. use RXON_ASSOC command to update any flags changes
415 int iwlagn_commit_rxon(struct iwl_priv
*priv
, struct iwl_rxon_context
*ctx
)
417 /* cast away the const for active_rxon in this function */
418 struct iwl_rxon_cmd
*active
= (void *)&ctx
->active
;
419 bool new_assoc
= !!(ctx
->staging
.filter_flags
& RXON_FILTER_ASSOC_MSK
);
422 lockdep_assert_held(&priv
->mutex
);
424 if (!iwl_is_alive(priv
))
427 /* This function hardcodes a bunch of dual-mode assumptions */
428 BUILD_BUG_ON(NUM_IWL_RXON_CTX
!= 2);
433 /* always get timestamp with Rx frame */
434 ctx
->staging
.flags
|= RXON_FLG_TSF2HOST_MSK
;
437 * force CTS-to-self frames protection if RTS-CTS is not preferred
438 * one aggregation protection method
440 if (!hw_params(priv
).use_rts_for_aggregation
)
441 ctx
->staging
.flags
|= RXON_FLG_SELF_CTS_EN
;
443 if ((ctx
->vif
&& ctx
->vif
->bss_conf
.use_short_slot
) ||
444 !(ctx
->staging
.flags
& RXON_FLG_BAND_24G_MSK
))
445 ctx
->staging
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
447 ctx
->staging
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
449 iwl_print_rx_config_cmd(priv
, ctx
->ctxid
);
450 ret
= iwl_check_rxon_cmd(priv
, ctx
);
452 IWL_ERR(priv
, "Invalid RXON configuration. Not committing.\n");
457 * receive commit_rxon request
458 * abort any previous channel switch if still in process
460 if (test_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->status
) &&
461 (priv
->switch_channel
!= ctx
->staging
.channel
)) {
462 IWL_DEBUG_11H(priv
, "abort channel switch on %d\n",
463 le16_to_cpu(priv
->switch_channel
));
464 iwl_chswitch_done(priv
, false);
468 * If we don't need to send a full RXON, we can use
469 * iwl_rxon_assoc_cmd which is used to reconfigure filter
470 * and other flags for the current radio configuration.
472 if (!iwl_full_rxon_required(priv
, ctx
)) {
473 ret
= iwlagn_send_rxon_assoc(priv
, ctx
);
475 IWL_ERR(priv
, "Error setting RXON_ASSOC (%d)\n", ret
);
479 memcpy(active
, &ctx
->staging
, sizeof(*active
));
481 * We do not commit tx power settings while channel changing,
482 * do it now if after settings changed.
484 iwl_set_tx_power(priv
, priv
->tx_power_next
, false);
486 /* make sure we are in the right PS state */
487 iwl_power_update_mode(priv
, true);
492 iwl_set_rxon_hwcrypto(priv
, ctx
, !iwlagn_mod_params
.sw_crypto
);
495 "Going to commit RXON\n"
496 " * with%s RXON_FILTER_ASSOC_MSK\n"
499 (new_assoc
? "" : "out"),
500 le16_to_cpu(ctx
->staging
.channel
),
501 ctx
->staging
.bssid_addr
);
504 * Always clear associated first, but with the correct config.
505 * This is required as for example station addition for the
506 * AP station must be done after the BSSID is set to correctly
507 * set up filters in the device.
509 ret
= iwlagn_rxon_disconn(priv
, ctx
);
513 ret
= iwlagn_set_pan_params(priv
);
518 return iwlagn_rxon_connect(priv
, ctx
);
523 void iwlagn_config_ht40(struct ieee80211_conf
*conf
,
524 struct iwl_rxon_context
*ctx
)
526 if (conf_is_ht40_minus(conf
)) {
527 ctx
->ht
.extension_chan_offset
=
528 IEEE80211_HT_PARAM_CHA_SEC_BELOW
;
529 ctx
->ht
.is_40mhz
= true;
530 } else if (conf_is_ht40_plus(conf
)) {
531 ctx
->ht
.extension_chan_offset
=
532 IEEE80211_HT_PARAM_CHA_SEC_ABOVE
;
533 ctx
->ht
.is_40mhz
= true;
535 ctx
->ht
.extension_chan_offset
=
536 IEEE80211_HT_PARAM_CHA_SEC_NONE
;
537 ctx
->ht
.is_40mhz
= false;
541 int iwlagn_mac_config(struct ieee80211_hw
*hw
, u32 changed
)
543 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
544 struct iwl_rxon_context
*ctx
;
545 struct ieee80211_conf
*conf
= &hw
->conf
;
546 struct ieee80211_channel
*channel
= conf
->channel
;
547 const struct iwl_channel_info
*ch_info
;
550 IWL_DEBUG_MAC80211(priv
, "enter: changed %#x", changed
);
552 mutex_lock(&priv
->mutex
);
554 if (unlikely(test_bit(STATUS_SCANNING
, &priv
->status
))) {
555 IWL_DEBUG_MAC80211(priv
, "leave - scanning\n");
559 if (!iwl_is_ready(priv
)) {
560 IWL_DEBUG_MAC80211(priv
, "leave - not ready\n");
564 if (changed
& (IEEE80211_CONF_CHANGE_SMPS
|
565 IEEE80211_CONF_CHANGE_CHANNEL
)) {
566 /* mac80211 uses static for non-HT which is what we want */
567 priv
->current_ht_config
.smps
= conf
->smps_mode
;
570 * Recalculate chain counts.
572 * If monitor mode is enabled then mac80211 will
573 * set up the SM PS mode to OFF if an HT channel is
576 for_each_context(priv
, ctx
)
577 iwlagn_set_rxon_chain(priv
, ctx
);
580 if (changed
& IEEE80211_CONF_CHANGE_CHANNEL
) {
581 ch_info
= iwl_get_channel_info(priv
, channel
->band
,
583 if (!is_channel_valid(ch_info
)) {
584 IWL_DEBUG_MAC80211(priv
, "leave - invalid channel\n");
589 for_each_context(priv
, ctx
) {
590 /* Configure HT40 channels */
591 if (ctx
->ht
.enabled
!= conf_is_ht(conf
))
592 ctx
->ht
.enabled
= conf_is_ht(conf
);
594 if (ctx
->ht
.enabled
) {
595 /* if HT40 is used, it should not change
596 * after associated except channel switch */
597 if (!ctx
->ht
.is_40mhz
||
598 !iwl_is_associated_ctx(ctx
))
599 iwlagn_config_ht40(conf
, ctx
);
601 ctx
->ht
.is_40mhz
= false;
604 * Default to no protection. Protection mode will
605 * later be set from BSS config in iwl_ht_conf
607 ctx
->ht
.protection
= IEEE80211_HT_OP_MODE_PROTECTION_NONE
;
609 /* if we are switching from ht to 2.4 clear flags
610 * from any ht related info since 2.4 does not
612 if (le16_to_cpu(ctx
->staging
.channel
) !=
614 ctx
->staging
.flags
= 0;
616 iwl_set_rxon_channel(priv
, channel
, ctx
);
617 iwl_set_rxon_ht(priv
, &priv
->current_ht_config
);
619 iwl_set_flags_for_band(priv
, ctx
, channel
->band
,
623 iwl_update_bcast_stations(priv
);
626 * The list of supported rates and rate mask can be different
627 * for each band; since the band may have changed, reset
628 * the rate mask to what mac80211 lists.
633 if (changed
& (IEEE80211_CONF_CHANGE_PS
|
634 IEEE80211_CONF_CHANGE_IDLE
)) {
635 ret
= iwl_power_update_mode(priv
, false);
637 IWL_DEBUG_MAC80211(priv
, "Error setting sleep level\n");
640 if (changed
& IEEE80211_CONF_CHANGE_POWER
) {
641 IWL_DEBUG_MAC80211(priv
, "TX Power old=%d new=%d\n",
642 priv
->tx_power_user_lmt
, conf
->power_level
);
644 iwl_set_tx_power(priv
, conf
->power_level
, false);
647 for_each_context(priv
, ctx
) {
648 if (!memcmp(&ctx
->staging
, &ctx
->active
, sizeof(ctx
->staging
)))
650 iwlagn_commit_rxon(priv
, ctx
);
653 mutex_unlock(&priv
->mutex
);
654 IWL_DEBUG_MAC80211(priv
, "leave\n");
659 static void iwlagn_check_needed_chains(struct iwl_priv
*priv
,
660 struct iwl_rxon_context
*ctx
,
661 struct ieee80211_bss_conf
*bss_conf
)
663 struct ieee80211_vif
*vif
= ctx
->vif
;
664 struct iwl_rxon_context
*tmp
;
665 struct ieee80211_sta
*sta
;
666 struct iwl_ht_config
*ht_conf
= &priv
->current_ht_config
;
667 struct ieee80211_sta_ht_cap
*ht_cap
;
670 lockdep_assert_held(&priv
->mutex
);
673 case NL80211_IFTYPE_STATION
:
675 sta
= ieee80211_find_sta(vif
, bss_conf
->bssid
);
678 * If at all, this can only happen through a race
679 * when the AP disconnects us while we're still
680 * setting up the connection, in that case mac80211
681 * will soon tell us about that.
683 need_multiple
= false;
688 ht_cap
= &sta
->ht_cap
;
690 need_multiple
= true;
693 * If the peer advertises no support for receiving 2 and 3
694 * stream MCS rates, it can't be transmitting them either.
696 if (ht_cap
->mcs
.rx_mask
[1] == 0 &&
697 ht_cap
->mcs
.rx_mask
[2] == 0) {
698 need_multiple
= false;
699 } else if (!(ht_cap
->mcs
.tx_params
&
700 IEEE80211_HT_MCS_TX_DEFINED
)) {
701 /* If it can't TX MCS at all ... */
702 need_multiple
= false;
703 } else if (ht_cap
->mcs
.tx_params
&
704 IEEE80211_HT_MCS_TX_RX_DIFF
) {
708 * But if it can receive them, it might still not
709 * be able to transmit them, which is what we need
710 * to check here -- so check the number of streams
711 * it advertises for TX (if different from RX).
714 maxstreams
= (ht_cap
->mcs
.tx_params
&
715 IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK
);
717 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT
;
721 need_multiple
= false;
726 case NL80211_IFTYPE_ADHOC
:
728 need_multiple
= false;
732 need_multiple
= true;
736 ctx
->ht_need_multiple_chains
= need_multiple
;
738 if (!need_multiple
) {
739 /* check all contexts */
740 for_each_context(priv
, tmp
) {
743 if (tmp
->ht_need_multiple_chains
) {
744 need_multiple
= true;
750 ht_conf
->single_chain_sufficient
= !need_multiple
;
753 static void iwlagn_chain_noise_reset(struct iwl_priv
*priv
)
755 struct iwl_chain_noise_data
*data
= &priv
->chain_noise_data
;
758 if ((data
->state
== IWL_CHAIN_NOISE_ALIVE
) &&
759 iwl_is_any_associated(priv
)) {
760 struct iwl_calib_chain_noise_reset_cmd cmd
;
762 /* clear data for chain noise calibration algorithm */
763 data
->chain_noise_a
= 0;
764 data
->chain_noise_b
= 0;
765 data
->chain_noise_c
= 0;
766 data
->chain_signal_a
= 0;
767 data
->chain_signal_b
= 0;
768 data
->chain_signal_c
= 0;
769 data
->beacon_count
= 0;
771 memset(&cmd
, 0, sizeof(cmd
));
772 iwl_set_calib_hdr(&cmd
.hdr
,
773 priv
->phy_calib_chain_noise_reset_cmd
);
774 ret
= iwl_dvm_send_cmd_pdu(priv
,
775 REPLY_PHY_CALIBRATION_CMD
,
776 CMD_SYNC
, sizeof(cmd
), &cmd
);
779 "Could not send REPLY_PHY_CALIBRATION_CMD\n");
780 data
->state
= IWL_CHAIN_NOISE_ACCUMULATE
;
781 IWL_DEBUG_CALIB(priv
, "Run chain_noise_calibrate\n");
785 void iwlagn_bss_info_changed(struct ieee80211_hw
*hw
,
786 struct ieee80211_vif
*vif
,
787 struct ieee80211_bss_conf
*bss_conf
,
790 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
791 struct iwl_rxon_context
*ctx
= iwl_rxon_ctx_from_vif(vif
);
795 mutex_lock(&priv
->mutex
);
797 if (unlikely(!iwl_is_ready(priv
))) {
798 IWL_DEBUG_MAC80211(priv
, "leave - not ready\n");
799 mutex_unlock(&priv
->mutex
);
803 if (unlikely(!ctx
->vif
)) {
804 IWL_DEBUG_MAC80211(priv
, "leave - vif is NULL\n");
805 mutex_unlock(&priv
->mutex
);
809 if (changes
& BSS_CHANGED_BEACON_INT
)
812 if (changes
& BSS_CHANGED_QOS
) {
813 ctx
->qos_data
.qos_active
= bss_conf
->qos
;
814 iwlagn_update_qos(priv
, ctx
);
817 ctx
->staging
.assoc_id
= cpu_to_le16(vif
->bss_conf
.aid
);
818 if (vif
->bss_conf
.use_short_preamble
)
819 ctx
->staging
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
821 ctx
->staging
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
823 if (changes
& BSS_CHANGED_ASSOC
) {
824 if (bss_conf
->assoc
) {
825 priv
->timestamp
= bss_conf
->last_tsf
;
826 ctx
->staging
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
829 * If we disassociate while there are pending
830 * frames, just wake up the queues and let the
831 * frames "escape" ... This shouldn't really
832 * be happening to start with, but we should
833 * not get stuck in this case either since it
834 * can happen if userspace gets confused.
836 iwlagn_lift_passive_no_rx(priv
);
838 ctx
->staging
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
840 if (ctx
->ctxid
== IWL_RXON_CTX_BSS
)
841 priv
->have_rekey_data
= false;
844 iwlagn_bt_coex_rssi_monitor(priv
);
847 if (ctx
->ht
.enabled
) {
848 ctx
->ht
.protection
= bss_conf
->ht_operation_mode
&
849 IEEE80211_HT_OP_MODE_PROTECTION
;
850 ctx
->ht
.non_gf_sta_present
= !!(bss_conf
->ht_operation_mode
&
851 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT
);
852 iwlagn_check_needed_chains(priv
, ctx
, bss_conf
);
853 iwl_set_rxon_ht(priv
, &priv
->current_ht_config
);
856 iwlagn_set_rxon_chain(priv
, ctx
);
858 if (bss_conf
->use_cts_prot
&& (priv
->band
!= IEEE80211_BAND_5GHZ
))
859 ctx
->staging
.flags
|= RXON_FLG_TGG_PROTECT_MSK
;
861 ctx
->staging
.flags
&= ~RXON_FLG_TGG_PROTECT_MSK
;
863 if (bss_conf
->use_cts_prot
)
864 ctx
->staging
.flags
|= RXON_FLG_SELF_CTS_EN
;
866 ctx
->staging
.flags
&= ~RXON_FLG_SELF_CTS_EN
;
868 memcpy(ctx
->staging
.bssid_addr
, bss_conf
->bssid
, ETH_ALEN
);
870 if (vif
->type
== NL80211_IFTYPE_AP
||
871 vif
->type
== NL80211_IFTYPE_ADHOC
) {
872 if (vif
->bss_conf
.enable_beacon
) {
873 ctx
->staging
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
874 priv
->beacon_ctx
= ctx
;
876 ctx
->staging
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
877 priv
->beacon_ctx
= NULL
;
882 * If the ucode decides to do beacon filtering before
883 * association, it will lose beacons that are needed
884 * before sending frames out on passive channels. This
885 * causes association failures on those channels. Enable
886 * receiving beacons in such cases.
889 if (vif
->type
== NL80211_IFTYPE_STATION
) {
890 if (!bss_conf
->assoc
)
891 ctx
->staging
.filter_flags
|= RXON_FILTER_BCON_AWARE_MSK
;
893 ctx
->staging
.filter_flags
&=
894 ~RXON_FILTER_BCON_AWARE_MSK
;
897 if (force
|| memcmp(&ctx
->staging
, &ctx
->active
, sizeof(ctx
->staging
)))
898 iwlagn_commit_rxon(priv
, ctx
);
900 if (changes
& BSS_CHANGED_ASSOC
&& bss_conf
->assoc
) {
902 * The chain noise calibration will enable PM upon
903 * completion. If calibration has already been run
904 * then we need to enable power management here.
906 if (priv
->chain_noise_data
.state
== IWL_CHAIN_NOISE_DONE
)
907 iwl_power_update_mode(priv
, false);
909 /* Enable RX differential gain and sensitivity calibrations */
910 if (!priv
->disable_chain_noise_cal
)
911 iwlagn_chain_noise_reset(priv
);
912 priv
->start_calib
= 1;
915 if (changes
& BSS_CHANGED_IBSS
) {
916 ret
= iwlagn_manage_ibss_station(priv
, vif
,
917 bss_conf
->ibss_joined
);
919 IWL_ERR(priv
, "failed to %s IBSS station %pM\n",
920 bss_conf
->ibss_joined
? "add" : "remove",
924 if (changes
& BSS_CHANGED_BEACON
&& vif
->type
== NL80211_IFTYPE_ADHOC
&&
926 if (iwlagn_update_beacon(priv
, vif
))
927 IWL_ERR(priv
, "Error sending IBSS beacon\n");
930 mutex_unlock(&priv
->mutex
);
933 void iwlagn_post_scan(struct iwl_priv
*priv
)
935 struct iwl_rxon_context
*ctx
;
938 * We do not commit power settings while scan is pending,
939 * do it now if the settings changed.
941 iwl_power_set_mode(priv
, &priv
->power_data
.sleep_cmd_next
, false);
942 iwl_set_tx_power(priv
, priv
->tx_power_next
, false);
945 * Since setting the RXON may have been deferred while
946 * performing the scan, fire one off if needed
948 for_each_context(priv
, ctx
)
949 if (memcmp(&ctx
->staging
, &ctx
->active
, sizeof(ctx
->staging
)))
950 iwlagn_commit_rxon(priv
, ctx
);
952 iwlagn_set_pan_params(priv
);