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 *****************************************************************************/
27 #include <linux/etherdevice.h>
28 #include "iwl-trans.h"
29 #include "iwl-modparams.h"
35 * initialize rxon structure with default values from eeprom
37 void iwl_connection_init_rx_config(struct iwl_priv
*priv
,
38 struct iwl_rxon_context
*ctx
)
40 memset(&ctx
->staging
, 0, sizeof(ctx
->staging
));
43 ctx
->staging
.dev_type
= ctx
->unused_devtype
;
45 switch (ctx
->vif
->type
) {
46 case NL80211_IFTYPE_AP
:
47 ctx
->staging
.dev_type
= ctx
->ap_devtype
;
50 case NL80211_IFTYPE_STATION
:
51 ctx
->staging
.dev_type
= ctx
->station_devtype
;
52 ctx
->staging
.filter_flags
= RXON_FILTER_ACCEPT_GRP_MSK
;
55 case NL80211_IFTYPE_ADHOC
:
56 ctx
->staging
.dev_type
= ctx
->ibss_devtype
;
57 ctx
->staging
.flags
= RXON_FLG_SHORT_PREAMBLE_MSK
;
58 ctx
->staging
.filter_flags
= RXON_FILTER_BCON_AWARE_MSK
|
59 RXON_FILTER_ACCEPT_GRP_MSK
;
62 case NL80211_IFTYPE_MONITOR
:
63 ctx
->staging
.dev_type
= RXON_DEV_TYPE_SNIFFER
;
67 IWL_ERR(priv
, "Unsupported interface type %d\n",
73 /* TODO: Figure out when short_preamble would be set and cache from
75 if (!hw_to_local(priv
->hw
)->short_preamble
)
76 ctx
->staging
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
78 ctx
->staging
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
81 ctx
->staging
.channel
= cpu_to_le16(priv
->hw
->conf
.channel
->hw_value
);
82 priv
->band
= priv
->hw
->conf
.channel
->band
;
84 iwl_set_flags_for_band(priv
, ctx
, priv
->band
, ctx
->vif
);
86 /* clear both MIX and PURE40 mode flag */
87 ctx
->staging
.flags
&= ~(RXON_FLG_CHANNEL_MODE_MIXED
|
88 RXON_FLG_CHANNEL_MODE_PURE_40
);
90 memcpy(ctx
->staging
.node_addr
, ctx
->vif
->addr
, ETH_ALEN
);
92 ctx
->staging
.ofdm_ht_single_stream_basic_rates
= 0xff;
93 ctx
->staging
.ofdm_ht_dual_stream_basic_rates
= 0xff;
94 ctx
->staging
.ofdm_ht_triple_stream_basic_rates
= 0xff;
97 static int iwlagn_disable_bss(struct iwl_priv
*priv
,
98 struct iwl_rxon_context
*ctx
,
99 struct iwl_rxon_cmd
*send
)
101 __le32 old_filter
= send
->filter_flags
;
104 send
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
105 ret
= iwl_dvm_send_cmd_pdu(priv
, ctx
->rxon_cmd
,
106 CMD_SYNC
, sizeof(*send
), send
);
108 send
->filter_flags
= old_filter
;
111 IWL_DEBUG_QUIET_RFKILL(priv
,
112 "Error clearing ASSOC_MSK on BSS (%d)\n", ret
);
117 static int iwlagn_disable_pan(struct iwl_priv
*priv
,
118 struct iwl_rxon_context
*ctx
,
119 struct iwl_rxon_cmd
*send
)
121 struct iwl_notification_wait disable_wait
;
122 __le32 old_filter
= send
->filter_flags
;
123 u8 old_dev_type
= send
->dev_type
;
125 static const u8 deactivate_cmd
[] = {
126 REPLY_WIPAN_DEACTIVATION_COMPLETE
129 iwl_init_notification_wait(&priv
->notif_wait
, &disable_wait
,
130 deactivate_cmd
, ARRAY_SIZE(deactivate_cmd
),
133 send
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
134 send
->dev_type
= RXON_DEV_TYPE_P2P
;
135 ret
= iwl_dvm_send_cmd_pdu(priv
, ctx
->rxon_cmd
,
136 CMD_SYNC
, sizeof(*send
), send
);
138 send
->filter_flags
= old_filter
;
139 send
->dev_type
= old_dev_type
;
142 IWL_ERR(priv
, "Error disabling PAN (%d)\n", ret
);
143 iwl_remove_notification(&priv
->notif_wait
, &disable_wait
);
145 ret
= iwl_wait_notification(&priv
->notif_wait
,
148 IWL_ERR(priv
, "Timed out waiting for PAN disable\n");
154 static int iwlagn_disconn_pan(struct iwl_priv
*priv
,
155 struct iwl_rxon_context
*ctx
,
156 struct iwl_rxon_cmd
*send
)
158 __le32 old_filter
= send
->filter_flags
;
161 send
->filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
162 ret
= iwl_dvm_send_cmd_pdu(priv
, ctx
->rxon_cmd
, CMD_SYNC
,
163 sizeof(*send
), send
);
165 send
->filter_flags
= old_filter
;
170 static void iwlagn_update_qos(struct iwl_priv
*priv
,
171 struct iwl_rxon_context
*ctx
)
178 ctx
->qos_data
.def_qos_parm
.qos_flags
= 0;
180 if (ctx
->qos_data
.qos_active
)
181 ctx
->qos_data
.def_qos_parm
.qos_flags
|=
182 QOS_PARAM_FLG_UPDATE_EDCA_MSK
;
185 ctx
->qos_data
.def_qos_parm
.qos_flags
|= QOS_PARAM_FLG_TGN_MSK
;
187 IWL_DEBUG_INFO(priv
, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
188 ctx
->qos_data
.qos_active
,
189 ctx
->qos_data
.def_qos_parm
.qos_flags
);
191 ret
= iwl_dvm_send_cmd_pdu(priv
, ctx
->qos_cmd
, CMD_SYNC
,
192 sizeof(struct iwl_qosparam_cmd
),
193 &ctx
->qos_data
.def_qos_parm
);
195 IWL_DEBUG_QUIET_RFKILL(priv
, "Failed to update QoS\n");
198 static int iwlagn_update_beacon(struct iwl_priv
*priv
,
199 struct ieee80211_vif
*vif
)
201 lockdep_assert_held(&priv
->mutex
);
203 dev_kfree_skb(priv
->beacon_skb
);
204 priv
->beacon_skb
= ieee80211_beacon_get(priv
->hw
, vif
);
205 if (!priv
->beacon_skb
)
207 return iwlagn_send_beacon_cmd(priv
);
210 static int iwlagn_send_rxon_assoc(struct iwl_priv
*priv
,
211 struct iwl_rxon_context
*ctx
)
214 struct iwl_rxon_assoc_cmd rxon_assoc
;
215 const struct iwl_rxon_cmd
*rxon1
= &ctx
->staging
;
216 const struct iwl_rxon_cmd
*rxon2
= &ctx
->active
;
218 if ((rxon1
->flags
== rxon2
->flags
) &&
219 (rxon1
->filter_flags
== rxon2
->filter_flags
) &&
220 (rxon1
->cck_basic_rates
== rxon2
->cck_basic_rates
) &&
221 (rxon1
->ofdm_ht_single_stream_basic_rates
==
222 rxon2
->ofdm_ht_single_stream_basic_rates
) &&
223 (rxon1
->ofdm_ht_dual_stream_basic_rates
==
224 rxon2
->ofdm_ht_dual_stream_basic_rates
) &&
225 (rxon1
->ofdm_ht_triple_stream_basic_rates
==
226 rxon2
->ofdm_ht_triple_stream_basic_rates
) &&
227 (rxon1
->acquisition_data
== rxon2
->acquisition_data
) &&
228 (rxon1
->rx_chain
== rxon2
->rx_chain
) &&
229 (rxon1
->ofdm_basic_rates
== rxon2
->ofdm_basic_rates
)) {
230 IWL_DEBUG_INFO(priv
, "Using current RXON_ASSOC. Not resending.\n");
234 rxon_assoc
.flags
= ctx
->staging
.flags
;
235 rxon_assoc
.filter_flags
= ctx
->staging
.filter_flags
;
236 rxon_assoc
.ofdm_basic_rates
= ctx
->staging
.ofdm_basic_rates
;
237 rxon_assoc
.cck_basic_rates
= ctx
->staging
.cck_basic_rates
;
238 rxon_assoc
.reserved1
= 0;
239 rxon_assoc
.reserved2
= 0;
240 rxon_assoc
.reserved3
= 0;
241 rxon_assoc
.ofdm_ht_single_stream_basic_rates
=
242 ctx
->staging
.ofdm_ht_single_stream_basic_rates
;
243 rxon_assoc
.ofdm_ht_dual_stream_basic_rates
=
244 ctx
->staging
.ofdm_ht_dual_stream_basic_rates
;
245 rxon_assoc
.rx_chain_select_flags
= ctx
->staging
.rx_chain
;
246 rxon_assoc
.ofdm_ht_triple_stream_basic_rates
=
247 ctx
->staging
.ofdm_ht_triple_stream_basic_rates
;
248 rxon_assoc
.acquisition_data
= ctx
->staging
.acquisition_data
;
250 ret
= iwl_dvm_send_cmd_pdu(priv
, ctx
->rxon_assoc_cmd
,
251 CMD_ASYNC
, sizeof(rxon_assoc
), &rxon_assoc
);
255 static u16
iwl_adjust_beacon_interval(u16 beacon_val
, u16 max_beacon_val
)
261 * If mac80211 hasn't given us a beacon interval, program
262 * the default into the device (not checking this here
263 * would cause the adjustment below to return the maximum
264 * value, which may break PAN.)
267 return DEFAULT_BEACON_INTERVAL
;
270 * If the beacon interval we obtained from the peer
271 * is too large, we'll have to wake up more often
272 * (and in IBSS case, we'll beacon too much)
274 * For example, if max_beacon_val is 4096, and the
275 * requested beacon interval is 7000, we'll have to
276 * use 3500 to be able to wake up on the beacons.
278 * This could badly influence beacon detection stats.
281 beacon_factor
= (beacon_val
+ max_beacon_val
) / max_beacon_val
;
282 new_val
= beacon_val
/ beacon_factor
;
285 new_val
= max_beacon_val
;
290 static int iwl_send_rxon_timing(struct iwl_priv
*priv
,
291 struct iwl_rxon_context
*ctx
)
294 s32 interval_tm
, rem
;
295 struct ieee80211_conf
*conf
= NULL
;
297 struct ieee80211_vif
*vif
= ctx
->vif
;
299 conf
= &priv
->hw
->conf
;
301 lockdep_assert_held(&priv
->mutex
);
303 memset(&ctx
->timing
, 0, sizeof(struct iwl_rxon_time_cmd
));
305 ctx
->timing
.timestamp
= cpu_to_le64(priv
->timestamp
);
306 ctx
->timing
.listen_interval
= cpu_to_le16(conf
->listen_interval
);
308 beacon_int
= vif
? vif
->bss_conf
.beacon_int
: 0;
311 * TODO: For IBSS we need to get atim_window from mac80211,
312 * for now just always use 0
314 ctx
->timing
.atim_window
= 0;
316 if (ctx
->ctxid
== IWL_RXON_CTX_PAN
&&
317 (!ctx
->vif
|| ctx
->vif
->type
!= NL80211_IFTYPE_STATION
) &&
318 iwl_is_associated(priv
, IWL_RXON_CTX_BSS
) &&
319 priv
->contexts
[IWL_RXON_CTX_BSS
].vif
&&
320 priv
->contexts
[IWL_RXON_CTX_BSS
].vif
->bss_conf
.beacon_int
) {
321 ctx
->timing
.beacon_interval
=
322 priv
->contexts
[IWL_RXON_CTX_BSS
].timing
.beacon_interval
;
323 beacon_int
= le16_to_cpu(ctx
->timing
.beacon_interval
);
324 } else if (ctx
->ctxid
== IWL_RXON_CTX_BSS
&&
325 iwl_is_associated(priv
, IWL_RXON_CTX_PAN
) &&
326 priv
->contexts
[IWL_RXON_CTX_PAN
].vif
&&
327 priv
->contexts
[IWL_RXON_CTX_PAN
].vif
->bss_conf
.beacon_int
&&
328 (!iwl_is_associated_ctx(ctx
) || !ctx
->vif
||
329 !ctx
->vif
->bss_conf
.beacon_int
)) {
330 ctx
->timing
.beacon_interval
=
331 priv
->contexts
[IWL_RXON_CTX_PAN
].timing
.beacon_interval
;
332 beacon_int
= le16_to_cpu(ctx
->timing
.beacon_interval
);
334 beacon_int
= iwl_adjust_beacon_interval(beacon_int
,
335 IWL_MAX_UCODE_BEACON_INTERVAL
* TIME_UNIT
);
336 ctx
->timing
.beacon_interval
= cpu_to_le16(beacon_int
);
339 ctx
->beacon_int
= beacon_int
;
341 tsf
= priv
->timestamp
; /* tsf is modifed by do_div: copy it */
342 interval_tm
= beacon_int
* TIME_UNIT
;
343 rem
= do_div(tsf
, interval_tm
);
344 ctx
->timing
.beacon_init_val
= cpu_to_le32(interval_tm
- rem
);
346 ctx
->timing
.dtim_period
= vif
? (vif
->bss_conf
.dtim_period
?: 1) : 1;
348 IWL_DEBUG_ASSOC(priv
,
349 "beacon interval %d beacon timer %d beacon tim %d\n",
350 le16_to_cpu(ctx
->timing
.beacon_interval
),
351 le32_to_cpu(ctx
->timing
.beacon_init_val
),
352 le16_to_cpu(ctx
->timing
.atim_window
));
354 return iwl_dvm_send_cmd_pdu(priv
, ctx
->rxon_timing_cmd
,
355 CMD_SYNC
, sizeof(ctx
->timing
), &ctx
->timing
);
358 static int iwlagn_rxon_disconn(struct iwl_priv
*priv
,
359 struct iwl_rxon_context
*ctx
)
362 struct iwl_rxon_cmd
*active
= (void *)&ctx
->active
;
364 if (ctx
->ctxid
== IWL_RXON_CTX_BSS
) {
365 ret
= iwlagn_disable_bss(priv
, ctx
, &ctx
->staging
);
367 ret
= iwlagn_disable_pan(priv
, ctx
, &ctx
->staging
);
371 ret
= iwl_send_rxon_timing(priv
, ctx
);
373 IWL_ERR(priv
, "Failed to send timing (%d)!\n", ret
);
376 ret
= iwlagn_disconn_pan(priv
, ctx
, &ctx
->staging
);
383 * Un-assoc RXON clears the station table and WEP
384 * keys, so we have to restore those afterwards.
386 iwl_clear_ucode_stations(priv
, ctx
);
387 /* update -- might need P2P now */
388 iwl_update_bcast_station(priv
, ctx
);
389 iwl_restore_stations(priv
, ctx
);
390 ret
= iwl_restore_default_wep_keys(priv
, ctx
);
392 IWL_ERR(priv
, "Failed to restore WEP keys (%d)\n", ret
);
396 memcpy(active
, &ctx
->staging
, sizeof(*active
));
400 static int iwl_set_tx_power(struct iwl_priv
*priv
, s8 tx_power
, bool force
)
405 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
407 if (priv
->calib_disabled
& IWL_TX_POWER_CALIB_DISABLED
)
410 lockdep_assert_held(&priv
->mutex
);
412 if (priv
->tx_power_user_lmt
== tx_power
&& !force
)
415 if (tx_power
< IWLAGN_TX_POWER_TARGET_POWER_MIN
) {
417 "Requested user TXPOWER %d below lower limit %d.\n",
419 IWLAGN_TX_POWER_TARGET_POWER_MIN
);
423 if (tx_power
> DIV_ROUND_UP(priv
->eeprom_data
->max_tx_pwr_half_dbm
, 2)) {
425 "Requested user TXPOWER %d above upper limit %d.\n",
426 tx_power
, priv
->eeprom_data
->max_tx_pwr_half_dbm
);
430 if (!iwl_is_ready_rf(priv
))
433 /* scan complete and commit_rxon use tx_power_next value,
434 * it always need to be updated for newest request */
435 priv
->tx_power_next
= tx_power
;
437 /* do not set tx power when scanning or channel changing */
438 defer
= test_bit(STATUS_SCANNING
, &priv
->status
) ||
439 memcmp(&ctx
->active
, &ctx
->staging
, sizeof(ctx
->staging
));
440 if (defer
&& !force
) {
441 IWL_DEBUG_INFO(priv
, "Deferring tx power set\n");
445 prev_tx_power
= priv
->tx_power_user_lmt
;
446 priv
->tx_power_user_lmt
= tx_power
;
448 ret
= iwlagn_send_tx_power(priv
);
450 /* if fail to set tx_power, restore the orig. tx power */
452 priv
->tx_power_user_lmt
= prev_tx_power
;
453 priv
->tx_power_next
= prev_tx_power
;
458 static int iwlagn_rxon_connect(struct iwl_priv
*priv
,
459 struct iwl_rxon_context
*ctx
)
462 struct iwl_rxon_cmd
*active
= (void *)&ctx
->active
;
464 /* RXON timing must be before associated RXON */
465 if (ctx
->ctxid
== IWL_RXON_CTX_BSS
) {
466 ret
= iwl_send_rxon_timing(priv
, ctx
);
468 IWL_ERR(priv
, "Failed to send timing (%d)!\n", ret
);
472 /* QoS info may be cleared by previous un-assoc RXON */
473 iwlagn_update_qos(priv
, ctx
);
476 * We'll run into this code path when beaconing is
477 * enabled, but then we also need to send the beacon
480 if (ctx
->vif
&& (ctx
->vif
->type
== NL80211_IFTYPE_AP
)) {
481 ret
= iwlagn_update_beacon(priv
, ctx
->vif
);
484 "Error sending required beacon (%d)!\n",
490 priv
->start_calib
= 0;
492 * Apply the new configuration.
494 * Associated RXON doesn't clear the station table in uCode,
495 * so we don't need to restore stations etc. after this.
497 ret
= iwl_dvm_send_cmd_pdu(priv
, ctx
->rxon_cmd
, CMD_SYNC
,
498 sizeof(struct iwl_rxon_cmd
), &ctx
->staging
);
500 IWL_ERR(priv
, "Error setting new RXON (%d)\n", ret
);
503 memcpy(active
, &ctx
->staging
, sizeof(*active
));
505 /* IBSS beacon needs to be sent after setting assoc */
506 if (ctx
->vif
&& (ctx
->vif
->type
== NL80211_IFTYPE_ADHOC
))
507 if (iwlagn_update_beacon(priv
, ctx
->vif
))
508 IWL_ERR(priv
, "Error sending IBSS beacon\n");
509 iwl_init_sensitivity(priv
);
512 * If we issue a new RXON command which required a tune then
513 * we must send a new TXPOWER command or we won't be able to
516 * It's expected we set power here if channel is changing.
518 ret
= iwl_set_tx_power(priv
, priv
->tx_power_next
, true);
520 IWL_ERR(priv
, "Error sending TX power (%d)\n", ret
);
524 if (ctx
->vif
&& ctx
->vif
->type
== NL80211_IFTYPE_STATION
&&
525 priv
->cfg
->ht_params
&& priv
->cfg
->ht_params
->smps_mode
)
526 ieee80211_request_smps(ctx
->vif
,
527 priv
->cfg
->ht_params
->smps_mode
);
532 int iwlagn_set_pan_params(struct iwl_priv
*priv
)
534 struct iwl_wipan_params_cmd cmd
;
535 struct iwl_rxon_context
*ctx_bss
, *ctx_pan
;
536 int slot0
= 300, slot1
= 0;
539 if (priv
->valid_contexts
== BIT(IWL_RXON_CTX_BSS
))
542 BUILD_BUG_ON(NUM_IWL_RXON_CTX
!= 2);
544 lockdep_assert_held(&priv
->mutex
);
546 ctx_bss
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
547 ctx_pan
= &priv
->contexts
[IWL_RXON_CTX_PAN
];
550 * If the PAN context is inactive, then we don't need
551 * to update the PAN parameters, the last thing we'll
552 * have done before it goes inactive is making the PAN
553 * parameters be WLAN-only.
555 if (!ctx_pan
->is_active
)
558 memset(&cmd
, 0, sizeof(cmd
));
560 /* only 2 slots are currently allowed */
563 cmd
.slots
[0].type
= 0; /* BSS */
564 cmd
.slots
[1].type
= 1; /* PAN */
566 if (priv
->hw_roc_setup
) {
567 /* both contexts must be used for this to happen */
568 slot1
= IWL_MIN_SLOT_TIME
;
570 } else if (ctx_bss
->vif
&& ctx_pan
->vif
) {
571 int bcnint
= ctx_pan
->beacon_int
;
572 int dtim
= ctx_pan
->vif
->bss_conf
.dtim_period
?: 1;
574 /* should be set, but seems unused?? */
575 cmd
.flags
|= cpu_to_le16(IWL_WIPAN_PARAMS_FLG_SLOTTED_MODE
);
577 if (ctx_pan
->vif
->type
== NL80211_IFTYPE_AP
&&
579 bcnint
!= ctx_bss
->beacon_int
) {
581 "beacon intervals don't match (%d, %d)\n",
582 ctx_bss
->beacon_int
, ctx_pan
->beacon_int
);
584 bcnint
= max_t(int, bcnint
,
585 ctx_bss
->beacon_int
);
587 bcnint
= DEFAULT_BEACON_INTERVAL
;
589 slot1
= bcnint
- slot0
;
591 if (test_bit(STATUS_SCAN_HW
, &priv
->status
) ||
592 (!ctx_bss
->vif
->bss_conf
.idle
&&
593 !ctx_bss
->vif
->bss_conf
.assoc
)) {
594 slot0
= dtim
* bcnint
* 3 - IWL_MIN_SLOT_TIME
;
595 slot1
= IWL_MIN_SLOT_TIME
;
596 } else if (!ctx_pan
->vif
->bss_conf
.idle
&&
597 !ctx_pan
->vif
->bss_conf
.assoc
) {
598 slot1
= dtim
* bcnint
* 3 - IWL_MIN_SLOT_TIME
;
599 slot0
= IWL_MIN_SLOT_TIME
;
601 } else if (ctx_pan
->vif
) {
603 slot1
= max_t(int, 1, ctx_pan
->vif
->bss_conf
.dtim_period
) *
605 slot1
= max_t(int, DEFAULT_BEACON_INTERVAL
, slot1
);
607 if (test_bit(STATUS_SCAN_HW
, &priv
->status
)) {
608 slot0
= slot1
* 3 - IWL_MIN_SLOT_TIME
;
609 slot1
= IWL_MIN_SLOT_TIME
;
613 cmd
.slots
[0].width
= cpu_to_le16(slot0
);
614 cmd
.slots
[1].width
= cpu_to_le16(slot1
);
616 ret
= iwl_dvm_send_cmd_pdu(priv
, REPLY_WIPAN_PARAMS
, CMD_SYNC
,
619 IWL_ERR(priv
, "Error setting PAN parameters (%d)\n", ret
);
624 static void _iwl_set_rxon_ht(struct iwl_priv
*priv
,
625 struct iwl_ht_config
*ht_conf
,
626 struct iwl_rxon_context
*ctx
)
628 struct iwl_rxon_cmd
*rxon
= &ctx
->staging
;
630 if (!ctx
->ht
.enabled
) {
631 rxon
->flags
&= ~(RXON_FLG_CHANNEL_MODE_MSK
|
632 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
|
633 RXON_FLG_HT40_PROT_MSK
|
634 RXON_FLG_HT_PROT_MSK
);
638 /* FIXME: if the definition of ht.protection changed, the "translation"
639 * will be needed for rxon->flags
641 rxon
->flags
|= cpu_to_le32(ctx
->ht
.protection
<<
642 RXON_FLG_HT_OPERATING_MODE_POS
);
644 /* Set up channel bandwidth:
645 * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
646 /* clear the HT channel mode before set the mode */
647 rxon
->flags
&= ~(RXON_FLG_CHANNEL_MODE_MSK
|
648 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
);
649 if (iwl_is_ht40_tx_allowed(priv
, ctx
, NULL
)) {
651 if (ctx
->ht
.protection
==
652 IEEE80211_HT_OP_MODE_PROTECTION_20MHZ
) {
653 rxon
->flags
|= RXON_FLG_CHANNEL_MODE_PURE_40
;
655 * Note: control channel is opposite of extension
658 switch (ctx
->ht
.extension_chan_offset
) {
659 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE
:
661 ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
;
663 case IEEE80211_HT_PARAM_CHA_SEC_BELOW
:
665 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
;
670 * Note: control channel is opposite of extension
673 switch (ctx
->ht
.extension_chan_offset
) {
674 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE
:
676 ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
);
677 rxon
->flags
|= RXON_FLG_CHANNEL_MODE_MIXED
;
679 case IEEE80211_HT_PARAM_CHA_SEC_BELOW
:
680 rxon
->flags
|= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK
;
681 rxon
->flags
|= RXON_FLG_CHANNEL_MODE_MIXED
;
683 case IEEE80211_HT_PARAM_CHA_SEC_NONE
:
686 * channel location only valid if in Mixed
690 "invalid extension channel offset\n");
695 rxon
->flags
|= RXON_FLG_CHANNEL_MODE_LEGACY
;
698 iwlagn_set_rxon_chain(priv
, ctx
);
700 IWL_DEBUG_ASSOC(priv
, "rxon flags 0x%X operation mode :0x%X "
701 "extension channel offset 0x%x\n",
702 le32_to_cpu(rxon
->flags
), ctx
->ht
.protection
,
703 ctx
->ht
.extension_chan_offset
);
706 void iwl_set_rxon_ht(struct iwl_priv
*priv
, struct iwl_ht_config
*ht_conf
)
708 struct iwl_rxon_context
*ctx
;
710 for_each_context(priv
, ctx
)
711 _iwl_set_rxon_ht(priv
, ht_conf
, ctx
);
715 * iwl_set_rxon_channel - Set the band and channel values in staging RXON
716 * @ch: requested channel as a pointer to struct ieee80211_channel
718 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
719 * in the staging RXON flag structure based on the ch->band
721 void iwl_set_rxon_channel(struct iwl_priv
*priv
, struct ieee80211_channel
*ch
,
722 struct iwl_rxon_context
*ctx
)
724 enum ieee80211_band band
= ch
->band
;
725 u16 channel
= ch
->hw_value
;
727 if ((le16_to_cpu(ctx
->staging
.channel
) == channel
) &&
728 (priv
->band
== band
))
731 ctx
->staging
.channel
= cpu_to_le16(channel
);
732 if (band
== IEEE80211_BAND_5GHZ
)
733 ctx
->staging
.flags
&= ~RXON_FLG_BAND_24G_MSK
;
735 ctx
->staging
.flags
|= RXON_FLG_BAND_24G_MSK
;
739 IWL_DEBUG_INFO(priv
, "Staging channel set to %d [%d]\n", channel
, band
);
743 void iwl_set_flags_for_band(struct iwl_priv
*priv
,
744 struct iwl_rxon_context
*ctx
,
745 enum ieee80211_band band
,
746 struct ieee80211_vif
*vif
)
748 if (band
== IEEE80211_BAND_5GHZ
) {
749 ctx
->staging
.flags
&=
750 ~(RXON_FLG_BAND_24G_MSK
| RXON_FLG_AUTO_DETECT_MSK
752 ctx
->staging
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
754 /* Copied from iwl_post_associate() */
755 if (vif
&& vif
->bss_conf
.use_short_slot
)
756 ctx
->staging
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
758 ctx
->staging
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
760 ctx
->staging
.flags
|= RXON_FLG_BAND_24G_MSK
;
761 ctx
->staging
.flags
|= RXON_FLG_AUTO_DETECT_MSK
;
762 ctx
->staging
.flags
&= ~RXON_FLG_CCK_MSK
;
766 static void iwl_set_rxon_hwcrypto(struct iwl_priv
*priv
,
767 struct iwl_rxon_context
*ctx
, int hw_decrypt
)
769 struct iwl_rxon_cmd
*rxon
= &ctx
->staging
;
772 rxon
->filter_flags
&= ~RXON_FILTER_DIS_DECRYPT_MSK
;
774 rxon
->filter_flags
|= RXON_FILTER_DIS_DECRYPT_MSK
;
778 /* validate RXON structure is valid */
779 static int iwl_check_rxon_cmd(struct iwl_priv
*priv
,
780 struct iwl_rxon_context
*ctx
)
782 struct iwl_rxon_cmd
*rxon
= &ctx
->staging
;
785 if (rxon
->flags
& RXON_FLG_BAND_24G_MSK
) {
786 if (rxon
->flags
& RXON_FLG_TGJ_NARROW_BAND_MSK
) {
787 IWL_WARN(priv
, "check 2.4G: wrong narrow\n");
790 if (rxon
->flags
& RXON_FLG_RADAR_DETECT_MSK
) {
791 IWL_WARN(priv
, "check 2.4G: wrong radar\n");
795 if (!(rxon
->flags
& RXON_FLG_SHORT_SLOT_MSK
)) {
796 IWL_WARN(priv
, "check 5.2G: not short slot!\n");
799 if (rxon
->flags
& RXON_FLG_CCK_MSK
) {
800 IWL_WARN(priv
, "check 5.2G: CCK!\n");
804 if ((rxon
->node_addr
[0] | rxon
->bssid_addr
[0]) & 0x1) {
805 IWL_WARN(priv
, "mac/bssid mcast!\n");
809 /* make sure basic rates 6Mbps and 1Mbps are supported */
810 if ((rxon
->ofdm_basic_rates
& IWL_RATE_6M_MASK
) == 0 &&
811 (rxon
->cck_basic_rates
& IWL_RATE_1M_MASK
) == 0) {
812 IWL_WARN(priv
, "neither 1 nor 6 are basic\n");
816 if (le16_to_cpu(rxon
->assoc_id
) > 2007) {
817 IWL_WARN(priv
, "aid > 2007\n");
821 if ((rxon
->flags
& (RXON_FLG_CCK_MSK
| RXON_FLG_SHORT_SLOT_MSK
))
822 == (RXON_FLG_CCK_MSK
| RXON_FLG_SHORT_SLOT_MSK
)) {
823 IWL_WARN(priv
, "CCK and short slot\n");
827 if ((rxon
->flags
& (RXON_FLG_CCK_MSK
| RXON_FLG_AUTO_DETECT_MSK
))
828 == (RXON_FLG_CCK_MSK
| RXON_FLG_AUTO_DETECT_MSK
)) {
829 IWL_WARN(priv
, "CCK and auto detect");
833 if ((rxon
->flags
& (RXON_FLG_AUTO_DETECT_MSK
|
834 RXON_FLG_TGG_PROTECT_MSK
)) ==
835 RXON_FLG_TGG_PROTECT_MSK
) {
836 IWL_WARN(priv
, "TGg but no auto-detect\n");
840 if (rxon
->channel
== 0) {
841 IWL_WARN(priv
, "zero channel is invalid\n");
845 WARN(errors
, "Invalid RXON (%#x), channel %d",
846 errors
, le16_to_cpu(rxon
->channel
));
848 return errors
? -EINVAL
: 0;
852 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
853 * @priv: staging_rxon is compared to active_rxon
855 * If the RXON structure is changing enough to require a new tune,
856 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
857 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
859 static int iwl_full_rxon_required(struct iwl_priv
*priv
,
860 struct iwl_rxon_context
*ctx
)
862 const struct iwl_rxon_cmd
*staging
= &ctx
->staging
;
863 const struct iwl_rxon_cmd
*active
= &ctx
->active
;
867 IWL_DEBUG_INFO(priv, "need full RXON - " #cond "\n"); \
871 #define CHK_NEQ(c1, c2) \
872 if ((c1) != (c2)) { \
873 IWL_DEBUG_INFO(priv, "need full RXON - " \
874 #c1 " != " #c2 " - %d != %d\n", \
879 /* These items are only settable from the full RXON command */
880 CHK(!iwl_is_associated_ctx(ctx
));
881 CHK(!ether_addr_equal(staging
->bssid_addr
, active
->bssid_addr
));
882 CHK(!ether_addr_equal(staging
->node_addr
, active
->node_addr
));
883 CHK(!ether_addr_equal(staging
->wlap_bssid_addr
,
884 active
->wlap_bssid_addr
));
885 CHK_NEQ(staging
->dev_type
, active
->dev_type
);
886 CHK_NEQ(staging
->channel
, active
->channel
);
887 CHK_NEQ(staging
->air_propagation
, active
->air_propagation
);
888 CHK_NEQ(staging
->ofdm_ht_single_stream_basic_rates
,
889 active
->ofdm_ht_single_stream_basic_rates
);
890 CHK_NEQ(staging
->ofdm_ht_dual_stream_basic_rates
,
891 active
->ofdm_ht_dual_stream_basic_rates
);
892 CHK_NEQ(staging
->ofdm_ht_triple_stream_basic_rates
,
893 active
->ofdm_ht_triple_stream_basic_rates
);
894 CHK_NEQ(staging
->assoc_id
, active
->assoc_id
);
896 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
897 * be updated with the RXON_ASSOC command -- however only some
898 * flag transitions are allowed using RXON_ASSOC */
900 /* Check if we are not switching bands */
901 CHK_NEQ(staging
->flags
& RXON_FLG_BAND_24G_MSK
,
902 active
->flags
& RXON_FLG_BAND_24G_MSK
);
904 /* Check if we are switching association toggle */
905 CHK_NEQ(staging
->filter_flags
& RXON_FILTER_ASSOC_MSK
,
906 active
->filter_flags
& RXON_FILTER_ASSOC_MSK
);
914 #ifdef CONFIG_IWLWIFI_DEBUG
915 void iwl_print_rx_config_cmd(struct iwl_priv
*priv
,
916 enum iwl_rxon_context_id ctxid
)
918 struct iwl_rxon_context
*ctx
= &priv
->contexts
[ctxid
];
919 struct iwl_rxon_cmd
*rxon
= &ctx
->staging
;
921 IWL_DEBUG_RADIO(priv
, "RX CONFIG:\n");
922 iwl_print_hex_dump(priv
, IWL_DL_RADIO
, (u8
*) rxon
, sizeof(*rxon
));
923 IWL_DEBUG_RADIO(priv
, "u16 channel: 0x%x\n",
924 le16_to_cpu(rxon
->channel
));
925 IWL_DEBUG_RADIO(priv
, "u32 flags: 0x%08X\n",
926 le32_to_cpu(rxon
->flags
));
927 IWL_DEBUG_RADIO(priv
, "u32 filter_flags: 0x%08x\n",
928 le32_to_cpu(rxon
->filter_flags
));
929 IWL_DEBUG_RADIO(priv
, "u8 dev_type: 0x%x\n", rxon
->dev_type
);
930 IWL_DEBUG_RADIO(priv
, "u8 ofdm_basic_rates: 0x%02x\n",
931 rxon
->ofdm_basic_rates
);
932 IWL_DEBUG_RADIO(priv
, "u8 cck_basic_rates: 0x%02x\n",
933 rxon
->cck_basic_rates
);
934 IWL_DEBUG_RADIO(priv
, "u8[6] node_addr: %pM\n", rxon
->node_addr
);
935 IWL_DEBUG_RADIO(priv
, "u8[6] bssid_addr: %pM\n", rxon
->bssid_addr
);
936 IWL_DEBUG_RADIO(priv
, "u16 assoc_id: 0x%x\n",
937 le16_to_cpu(rxon
->assoc_id
));
941 static void iwl_calc_basic_rates(struct iwl_priv
*priv
,
942 struct iwl_rxon_context
*ctx
)
944 int lowest_present_ofdm
= 100;
945 int lowest_present_cck
= 100;
950 struct ieee80211_supported_band
*sband
;
951 unsigned long basic
= ctx
->vif
->bss_conf
.basic_rates
;
954 sband
= priv
->hw
->wiphy
->bands
[priv
->hw
->conf
.channel
->band
];
956 for_each_set_bit(i
, &basic
, BITS_PER_LONG
) {
957 int hw
= sband
->bitrates
[i
].hw_value
;
958 if (hw
>= IWL_FIRST_OFDM_RATE
) {
959 ofdm
|= BIT(hw
- IWL_FIRST_OFDM_RATE
);
960 if (lowest_present_ofdm
> hw
)
961 lowest_present_ofdm
= hw
;
963 BUILD_BUG_ON(IWL_FIRST_CCK_RATE
!= 0);
966 if (lowest_present_cck
> hw
)
967 lowest_present_cck
= hw
;
973 * Now we've got the basic rates as bitmaps in the ofdm and cck
974 * variables. This isn't sufficient though, as there might not
975 * be all the right rates in the bitmap. E.g. if the only basic
976 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
977 * and 6 Mbps because the 802.11-2007 standard says in 9.6:
979 * [...] a STA responding to a received frame shall transmit
980 * its Control Response frame [...] at the highest rate in the
981 * BSSBasicRateSet parameter that is less than or equal to the
982 * rate of the immediately previous frame in the frame exchange
983 * sequence ([...]) and that is of the same modulation class
984 * ([...]) as the received frame. If no rate contained in the
985 * BSSBasicRateSet parameter meets these conditions, then the
986 * control frame sent in response to a received frame shall be
987 * transmitted at the highest mandatory rate of the PHY that is
988 * less than or equal to the rate of the received frame, and
989 * that is of the same modulation class as the received frame.
991 * As a consequence, we need to add all mandatory rates that are
992 * lower than all of the basic rates to these bitmaps.
995 if (IWL_RATE_24M_INDEX
< lowest_present_ofdm
)
996 ofdm
|= IWL_RATE_24M_MASK
>> IWL_FIRST_OFDM_RATE
;
997 if (IWL_RATE_12M_INDEX
< lowest_present_ofdm
)
998 ofdm
|= IWL_RATE_12M_MASK
>> IWL_FIRST_OFDM_RATE
;
999 /* 6M already there or needed so always add */
1000 ofdm
|= IWL_RATE_6M_MASK
>> IWL_FIRST_OFDM_RATE
;
1003 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
1005 * - if no CCK rates are basic, it must be ERP since there must
1006 * be some basic rates at all, so they're OFDM => ERP PHY
1007 * (or we're in 5 GHz, and the cck bitmap will never be used)
1008 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M
1009 * - if 5.5M is basic, 1M and 2M are mandatory
1010 * - if 2M is basic, 1M is mandatory
1011 * - if 1M is basic, that's the only valid ACK rate.
1012 * As a consequence, it's not as complicated as it sounds, just add
1013 * any lower rates to the ACK rate bitmap.
1015 if (IWL_RATE_11M_INDEX
< lowest_present_ofdm
)
1016 ofdm
|= IWL_RATE_11M_MASK
>> IWL_FIRST_CCK_RATE
;
1017 if (IWL_RATE_5M_INDEX
< lowest_present_ofdm
)
1018 ofdm
|= IWL_RATE_5M_MASK
>> IWL_FIRST_CCK_RATE
;
1019 if (IWL_RATE_2M_INDEX
< lowest_present_ofdm
)
1020 ofdm
|= IWL_RATE_2M_MASK
>> IWL_FIRST_CCK_RATE
;
1021 /* 1M already there or needed so always add */
1022 cck
|= IWL_RATE_1M_MASK
>> IWL_FIRST_CCK_RATE
;
1024 IWL_DEBUG_RATE(priv
, "Set basic rates cck:0x%.2x ofdm:0x%.2x\n",
1027 /* "basic_rates" is a misnomer here -- should be called ACK rates */
1028 ctx
->staging
.cck_basic_rates
= cck
;
1029 ctx
->staging
.ofdm_basic_rates
= ofdm
;
1033 * iwlagn_commit_rxon - commit staging_rxon to hardware
1035 * The RXON command in staging_rxon is committed to the hardware and
1036 * the active_rxon structure is updated with the new data. This
1037 * function correctly transitions out of the RXON_ASSOC_MSK state if
1038 * a HW tune is required based on the RXON structure changes.
1040 * The connect/disconnect flow should be as the following:
1042 * 1. make sure send RXON command with association bit unset if not connect
1043 * this should include the channel and the band for the candidate
1044 * to be connected to
1045 * 2. Add Station before RXON association with the AP
1046 * 3. RXON_timing has to send before RXON for connection
1047 * 4. full RXON command - associated bit set
1048 * 5. use RXON_ASSOC command to update any flags changes
1050 int iwlagn_commit_rxon(struct iwl_priv
*priv
, struct iwl_rxon_context
*ctx
)
1052 /* cast away the const for active_rxon in this function */
1053 struct iwl_rxon_cmd
*active
= (void *)&ctx
->active
;
1054 bool new_assoc
= !!(ctx
->staging
.filter_flags
& RXON_FILTER_ASSOC_MSK
);
1057 lockdep_assert_held(&priv
->mutex
);
1059 if (!iwl_is_alive(priv
))
1062 /* This function hardcodes a bunch of dual-mode assumptions */
1063 BUILD_BUG_ON(NUM_IWL_RXON_CTX
!= 2);
1065 if (!ctx
->is_active
)
1068 /* always get timestamp with Rx frame */
1069 ctx
->staging
.flags
|= RXON_FLG_TSF2HOST_MSK
;
1071 /* recalculate basic rates */
1072 iwl_calc_basic_rates(priv
, ctx
);
1075 * force CTS-to-self frames protection if RTS-CTS is not preferred
1076 * one aggregation protection method
1078 if (!priv
->hw_params
.use_rts_for_aggregation
)
1079 ctx
->staging
.flags
|= RXON_FLG_SELF_CTS_EN
;
1081 if ((ctx
->vif
&& ctx
->vif
->bss_conf
.use_short_slot
) ||
1082 !(ctx
->staging
.flags
& RXON_FLG_BAND_24G_MSK
))
1083 ctx
->staging
.flags
|= RXON_FLG_SHORT_SLOT_MSK
;
1085 ctx
->staging
.flags
&= ~RXON_FLG_SHORT_SLOT_MSK
;
1087 iwl_print_rx_config_cmd(priv
, ctx
->ctxid
);
1088 ret
= iwl_check_rxon_cmd(priv
, ctx
);
1090 IWL_ERR(priv
, "Invalid RXON configuration. Not committing.\n");
1095 * receive commit_rxon request
1096 * abort any previous channel switch if still in process
1098 if (test_bit(STATUS_CHANNEL_SWITCH_PENDING
, &priv
->status
) &&
1099 (priv
->switch_channel
!= ctx
->staging
.channel
)) {
1100 IWL_DEBUG_11H(priv
, "abort channel switch on %d\n",
1101 le16_to_cpu(priv
->switch_channel
));
1102 iwl_chswitch_done(priv
, false);
1106 * If we don't need to send a full RXON, we can use
1107 * iwl_rxon_assoc_cmd which is used to reconfigure filter
1108 * and other flags for the current radio configuration.
1110 if (!iwl_full_rxon_required(priv
, ctx
)) {
1111 ret
= iwlagn_send_rxon_assoc(priv
, ctx
);
1113 IWL_ERR(priv
, "Error setting RXON_ASSOC (%d)\n", ret
);
1117 memcpy(active
, &ctx
->staging
, sizeof(*active
));
1119 * We do not commit tx power settings while channel changing,
1120 * do it now if after settings changed.
1122 iwl_set_tx_power(priv
, priv
->tx_power_next
, false);
1124 /* make sure we are in the right PS state */
1125 iwl_power_update_mode(priv
, true);
1130 iwl_set_rxon_hwcrypto(priv
, ctx
, !iwlwifi_mod_params
.sw_crypto
);
1132 IWL_DEBUG_INFO(priv
,
1133 "Going to commit RXON\n"
1134 " * with%s RXON_FILTER_ASSOC_MSK\n"
1137 (new_assoc
? "" : "out"),
1138 le16_to_cpu(ctx
->staging
.channel
),
1139 ctx
->staging
.bssid_addr
);
1142 * Always clear associated first, but with the correct config.
1143 * This is required as for example station addition for the
1144 * AP station must be done after the BSSID is set to correctly
1145 * set up filters in the device.
1147 ret
= iwlagn_rxon_disconn(priv
, ctx
);
1151 ret
= iwlagn_set_pan_params(priv
);
1156 return iwlagn_rxon_connect(priv
, ctx
);
1161 void iwlagn_config_ht40(struct ieee80211_conf
*conf
,
1162 struct iwl_rxon_context
*ctx
)
1164 if (conf_is_ht40_minus(conf
)) {
1165 ctx
->ht
.extension_chan_offset
=
1166 IEEE80211_HT_PARAM_CHA_SEC_BELOW
;
1167 ctx
->ht
.is_40mhz
= true;
1168 } else if (conf_is_ht40_plus(conf
)) {
1169 ctx
->ht
.extension_chan_offset
=
1170 IEEE80211_HT_PARAM_CHA_SEC_ABOVE
;
1171 ctx
->ht
.is_40mhz
= true;
1173 ctx
->ht
.extension_chan_offset
=
1174 IEEE80211_HT_PARAM_CHA_SEC_NONE
;
1175 ctx
->ht
.is_40mhz
= false;
1179 int iwlagn_mac_config(struct ieee80211_hw
*hw
, u32 changed
)
1181 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1182 struct iwl_rxon_context
*ctx
;
1183 struct ieee80211_conf
*conf
= &hw
->conf
;
1184 struct ieee80211_channel
*channel
= conf
->channel
;
1187 IWL_DEBUG_MAC80211(priv
, "enter: changed %#x\n", changed
);
1189 mutex_lock(&priv
->mutex
);
1191 if (unlikely(test_bit(STATUS_SCANNING
, &priv
->status
))) {
1192 IWL_DEBUG_MAC80211(priv
, "leave - scanning\n");
1196 if (!iwl_is_ready(priv
)) {
1197 IWL_DEBUG_MAC80211(priv
, "leave - not ready\n");
1201 if (changed
& (IEEE80211_CONF_CHANGE_SMPS
|
1202 IEEE80211_CONF_CHANGE_CHANNEL
)) {
1203 /* mac80211 uses static for non-HT which is what we want */
1204 priv
->current_ht_config
.smps
= conf
->smps_mode
;
1207 * Recalculate chain counts.
1209 * If monitor mode is enabled then mac80211 will
1210 * set up the SM PS mode to OFF if an HT channel is
1213 for_each_context(priv
, ctx
)
1214 iwlagn_set_rxon_chain(priv
, ctx
);
1217 if (changed
& IEEE80211_CONF_CHANGE_CHANNEL
) {
1218 for_each_context(priv
, ctx
) {
1219 /* Configure HT40 channels */
1220 if (ctx
->ht
.enabled
!= conf_is_ht(conf
))
1221 ctx
->ht
.enabled
= conf_is_ht(conf
);
1223 if (ctx
->ht
.enabled
) {
1224 /* if HT40 is used, it should not change
1225 * after associated except channel switch */
1226 if (!ctx
->ht
.is_40mhz
||
1227 !iwl_is_associated_ctx(ctx
))
1228 iwlagn_config_ht40(conf
, ctx
);
1230 ctx
->ht
.is_40mhz
= false;
1233 * Default to no protection. Protection mode will
1234 * later be set from BSS config in iwl_ht_conf
1236 ctx
->ht
.protection
= IEEE80211_HT_OP_MODE_PROTECTION_NONE
;
1238 /* if we are switching from ht to 2.4 clear flags
1239 * from any ht related info since 2.4 does not
1241 if (le16_to_cpu(ctx
->staging
.channel
) !=
1243 ctx
->staging
.flags
= 0;
1245 iwl_set_rxon_channel(priv
, channel
, ctx
);
1246 iwl_set_rxon_ht(priv
, &priv
->current_ht_config
);
1248 iwl_set_flags_for_band(priv
, ctx
, channel
->band
,
1252 iwl_update_bcast_stations(priv
);
1255 if (changed
& (IEEE80211_CONF_CHANGE_PS
|
1256 IEEE80211_CONF_CHANGE_IDLE
)) {
1257 ret
= iwl_power_update_mode(priv
, false);
1259 IWL_DEBUG_MAC80211(priv
, "Error setting sleep level\n");
1262 if (changed
& IEEE80211_CONF_CHANGE_POWER
) {
1263 IWL_DEBUG_MAC80211(priv
, "TX Power old=%d new=%d\n",
1264 priv
->tx_power_user_lmt
, conf
->power_level
);
1266 iwl_set_tx_power(priv
, conf
->power_level
, false);
1269 for_each_context(priv
, ctx
) {
1270 if (!memcmp(&ctx
->staging
, &ctx
->active
, sizeof(ctx
->staging
)))
1272 iwlagn_commit_rxon(priv
, ctx
);
1275 mutex_unlock(&priv
->mutex
);
1276 IWL_DEBUG_MAC80211(priv
, "leave\n");
1281 static void iwlagn_check_needed_chains(struct iwl_priv
*priv
,
1282 struct iwl_rxon_context
*ctx
,
1283 struct ieee80211_bss_conf
*bss_conf
)
1285 struct ieee80211_vif
*vif
= ctx
->vif
;
1286 struct iwl_rxon_context
*tmp
;
1287 struct ieee80211_sta
*sta
;
1288 struct iwl_ht_config
*ht_conf
= &priv
->current_ht_config
;
1289 struct ieee80211_sta_ht_cap
*ht_cap
;
1292 lockdep_assert_held(&priv
->mutex
);
1294 switch (vif
->type
) {
1295 case NL80211_IFTYPE_STATION
:
1297 sta
= ieee80211_find_sta(vif
, bss_conf
->bssid
);
1300 * If at all, this can only happen through a race
1301 * when the AP disconnects us while we're still
1302 * setting up the connection, in that case mac80211
1303 * will soon tell us about that.
1305 need_multiple
= false;
1310 ht_cap
= &sta
->ht_cap
;
1312 need_multiple
= true;
1315 * If the peer advertises no support for receiving 2 and 3
1316 * stream MCS rates, it can't be transmitting them either.
1318 if (ht_cap
->mcs
.rx_mask
[1] == 0 &&
1319 ht_cap
->mcs
.rx_mask
[2] == 0) {
1320 need_multiple
= false;
1321 } else if (!(ht_cap
->mcs
.tx_params
&
1322 IEEE80211_HT_MCS_TX_DEFINED
)) {
1323 /* If it can't TX MCS at all ... */
1324 need_multiple
= false;
1325 } else if (ht_cap
->mcs
.tx_params
&
1326 IEEE80211_HT_MCS_TX_RX_DIFF
) {
1330 * But if it can receive them, it might still not
1331 * be able to transmit them, which is what we need
1332 * to check here -- so check the number of streams
1333 * it advertises for TX (if different from RX).
1336 maxstreams
= (ht_cap
->mcs
.tx_params
&
1337 IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK
);
1339 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT
;
1342 if (maxstreams
<= 1)
1343 need_multiple
= false;
1348 case NL80211_IFTYPE_ADHOC
:
1350 need_multiple
= false;
1353 /* only AP really */
1354 need_multiple
= true;
1358 ctx
->ht_need_multiple_chains
= need_multiple
;
1360 if (!need_multiple
) {
1361 /* check all contexts */
1362 for_each_context(priv
, tmp
) {
1365 if (tmp
->ht_need_multiple_chains
) {
1366 need_multiple
= true;
1372 ht_conf
->single_chain_sufficient
= !need_multiple
;
1375 static void iwlagn_chain_noise_reset(struct iwl_priv
*priv
)
1377 struct iwl_chain_noise_data
*data
= &priv
->chain_noise_data
;
1380 if (!(priv
->calib_disabled
& IWL_CHAIN_NOISE_CALIB_DISABLED
))
1383 if ((data
->state
== IWL_CHAIN_NOISE_ALIVE
) &&
1384 iwl_is_any_associated(priv
)) {
1385 struct iwl_calib_chain_noise_reset_cmd cmd
;
1387 /* clear data for chain noise calibration algorithm */
1388 data
->chain_noise_a
= 0;
1389 data
->chain_noise_b
= 0;
1390 data
->chain_noise_c
= 0;
1391 data
->chain_signal_a
= 0;
1392 data
->chain_signal_b
= 0;
1393 data
->chain_signal_c
= 0;
1394 data
->beacon_count
= 0;
1396 memset(&cmd
, 0, sizeof(cmd
));
1397 iwl_set_calib_hdr(&cmd
.hdr
,
1398 priv
->phy_calib_chain_noise_reset_cmd
);
1399 ret
= iwl_dvm_send_cmd_pdu(priv
,
1400 REPLY_PHY_CALIBRATION_CMD
,
1401 CMD_SYNC
, sizeof(cmd
), &cmd
);
1404 "Could not send REPLY_PHY_CALIBRATION_CMD\n");
1405 data
->state
= IWL_CHAIN_NOISE_ACCUMULATE
;
1406 IWL_DEBUG_CALIB(priv
, "Run chain_noise_calibrate\n");
1410 void iwlagn_bss_info_changed(struct ieee80211_hw
*hw
,
1411 struct ieee80211_vif
*vif
,
1412 struct ieee80211_bss_conf
*bss_conf
,
1415 struct iwl_priv
*priv
= IWL_MAC80211_GET_DVM(hw
);
1416 struct iwl_rxon_context
*ctx
= iwl_rxon_ctx_from_vif(vif
);
1420 mutex_lock(&priv
->mutex
);
1422 if (unlikely(!iwl_is_ready(priv
))) {
1423 IWL_DEBUG_MAC80211(priv
, "leave - not ready\n");
1424 mutex_unlock(&priv
->mutex
);
1428 if (unlikely(!ctx
->vif
)) {
1429 IWL_DEBUG_MAC80211(priv
, "leave - vif is NULL\n");
1430 mutex_unlock(&priv
->mutex
);
1434 if (changes
& BSS_CHANGED_BEACON_INT
)
1437 if (changes
& BSS_CHANGED_QOS
) {
1438 ctx
->qos_data
.qos_active
= bss_conf
->qos
;
1439 iwlagn_update_qos(priv
, ctx
);
1442 ctx
->staging
.assoc_id
= cpu_to_le16(vif
->bss_conf
.aid
);
1443 if (vif
->bss_conf
.use_short_preamble
)
1444 ctx
->staging
.flags
|= RXON_FLG_SHORT_PREAMBLE_MSK
;
1446 ctx
->staging
.flags
&= ~RXON_FLG_SHORT_PREAMBLE_MSK
;
1448 if (changes
& BSS_CHANGED_ASSOC
) {
1449 if (bss_conf
->assoc
) {
1450 priv
->timestamp
= bss_conf
->sync_tsf
;
1451 ctx
->staging
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
1454 * If we disassociate while there are pending
1455 * frames, just wake up the queues and let the
1456 * frames "escape" ... This shouldn't really
1457 * be happening to start with, but we should
1458 * not get stuck in this case either since it
1459 * can happen if userspace gets confused.
1461 iwlagn_lift_passive_no_rx(priv
);
1463 ctx
->staging
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
1465 if (ctx
->ctxid
== IWL_RXON_CTX_BSS
)
1466 priv
->have_rekey_data
= false;
1469 iwlagn_bt_coex_rssi_monitor(priv
);
1472 if (ctx
->ht
.enabled
) {
1473 ctx
->ht
.protection
= bss_conf
->ht_operation_mode
&
1474 IEEE80211_HT_OP_MODE_PROTECTION
;
1475 ctx
->ht
.non_gf_sta_present
= !!(bss_conf
->ht_operation_mode
&
1476 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT
);
1477 iwlagn_check_needed_chains(priv
, ctx
, bss_conf
);
1478 iwl_set_rxon_ht(priv
, &priv
->current_ht_config
);
1481 iwlagn_set_rxon_chain(priv
, ctx
);
1483 if (bss_conf
->use_cts_prot
&& (priv
->band
!= IEEE80211_BAND_5GHZ
))
1484 ctx
->staging
.flags
|= RXON_FLG_TGG_PROTECT_MSK
;
1486 ctx
->staging
.flags
&= ~RXON_FLG_TGG_PROTECT_MSK
;
1488 if (bss_conf
->use_cts_prot
)
1489 ctx
->staging
.flags
|= RXON_FLG_SELF_CTS_EN
;
1491 ctx
->staging
.flags
&= ~RXON_FLG_SELF_CTS_EN
;
1493 memcpy(ctx
->staging
.bssid_addr
, bss_conf
->bssid
, ETH_ALEN
);
1495 if (vif
->type
== NL80211_IFTYPE_AP
||
1496 vif
->type
== NL80211_IFTYPE_ADHOC
) {
1497 if (vif
->bss_conf
.enable_beacon
) {
1498 ctx
->staging
.filter_flags
|= RXON_FILTER_ASSOC_MSK
;
1499 priv
->beacon_ctx
= ctx
;
1501 ctx
->staging
.filter_flags
&= ~RXON_FILTER_ASSOC_MSK
;
1502 priv
->beacon_ctx
= NULL
;
1507 * If the ucode decides to do beacon filtering before
1508 * association, it will lose beacons that are needed
1509 * before sending frames out on passive channels. This
1510 * causes association failures on those channels. Enable
1511 * receiving beacons in such cases.
1514 if (vif
->type
== NL80211_IFTYPE_STATION
) {
1515 if (!bss_conf
->assoc
)
1516 ctx
->staging
.filter_flags
|= RXON_FILTER_BCON_AWARE_MSK
;
1518 ctx
->staging
.filter_flags
&=
1519 ~RXON_FILTER_BCON_AWARE_MSK
;
1522 if (force
|| memcmp(&ctx
->staging
, &ctx
->active
, sizeof(ctx
->staging
)))
1523 iwlagn_commit_rxon(priv
, ctx
);
1525 if (changes
& BSS_CHANGED_ASSOC
&& bss_conf
->assoc
) {
1527 * The chain noise calibration will enable PM upon
1528 * completion. If calibration has already been run
1529 * then we need to enable power management here.
1531 if (priv
->chain_noise_data
.state
== IWL_CHAIN_NOISE_DONE
)
1532 iwl_power_update_mode(priv
, false);
1534 /* Enable RX differential gain and sensitivity calibrations */
1535 iwlagn_chain_noise_reset(priv
);
1536 priv
->start_calib
= 1;
1539 if (changes
& BSS_CHANGED_IBSS
) {
1540 ret
= iwlagn_manage_ibss_station(priv
, vif
,
1541 bss_conf
->ibss_joined
);
1543 IWL_ERR(priv
, "failed to %s IBSS station %pM\n",
1544 bss_conf
->ibss_joined
? "add" : "remove",
1548 if (changes
& BSS_CHANGED_BEACON
&& vif
->type
== NL80211_IFTYPE_ADHOC
&&
1550 if (iwlagn_update_beacon(priv
, vif
))
1551 IWL_ERR(priv
, "Error sending IBSS beacon\n");
1554 mutex_unlock(&priv
->mutex
);
1557 void iwlagn_post_scan(struct iwl_priv
*priv
)
1559 struct iwl_rxon_context
*ctx
;
1562 * We do not commit power settings while scan is pending,
1563 * do it now if the settings changed.
1565 iwl_power_set_mode(priv
, &priv
->power_data
.sleep_cmd_next
, false);
1566 iwl_set_tx_power(priv
, priv
->tx_power_next
, false);
1569 * Since setting the RXON may have been deferred while
1570 * performing the scan, fire one off if needed
1572 for_each_context(priv
, ctx
)
1573 if (memcmp(&ctx
->staging
, &ctx
->active
, sizeof(ctx
->staging
)))
1574 iwlagn_commit_rxon(priv
, ctx
);
1576 iwlagn_set_pan_params(priv
);