projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
iwlwifi: move iwl_set_rxon_channel to iwl-agn-rxon.c
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-agn-rxon.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
4 *
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.
8 *
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
12 * more details.
13 *
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
17 *
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
20 *
21 * Contact Information:
22 * Intel Linux Wireless <ilw@linux.intel.com>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
24 *
25 *****************************************************************************/
26
27 #include <linux/etherdevice.h>
28 #include "iwl-dev.h"
29 #include "iwl-agn.h"
30 #include "iwl-core.h"
31 #include "iwl-agn-calib.h"
32 #include "iwl-trans.h"
33 #include "iwl-shared.h"
34
35 static int iwlagn_disable_bss(struct iwl_priv *priv,
36 struct iwl_rxon_context *ctx,
37 struct iwl_rxon_cmd *send)
38 {
39 __le32 old_filter = send->filter_flags;
40 int ret;
41
42 send->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
43 ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_cmd,
44 CMD_SYNC, sizeof(*send), send);
45
46 send->filter_flags = old_filter;
47
48 if (ret)
49 IWL_DEBUG_QUIET_RFKILL(priv,
50 "Error clearing ASSOC_MSK on BSS (%d)\n", ret);
51
52 return ret;
53 }
54
55 static int iwlagn_disable_pan(struct iwl_priv *priv,
56 struct iwl_rxon_context *ctx,
57 struct iwl_rxon_cmd *send)
58 {
59 struct iwl_notification_wait disable_wait;
60 __le32 old_filter = send->filter_flags;
61 u8 old_dev_type = send->dev_type;
62 int ret;
63 static const u8 deactivate_cmd[] = {
64 REPLY_WIPAN_DEACTIVATION_COMPLETE
65 };
66
67 iwl_init_notification_wait(&priv->notif_wait, &disable_wait,
68 deactivate_cmd, ARRAY_SIZE(deactivate_cmd),
69 NULL, NULL);
70
71 send->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
72 send->dev_type = RXON_DEV_TYPE_P2P;
73 ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_cmd,
74 CMD_SYNC, sizeof(*send), send);
75
76 send->filter_flags = old_filter;
77 send->dev_type = old_dev_type;
78
79 if (ret) {
80 IWL_ERR(priv, "Error disabling PAN (%d)\n", ret);
81 iwl_remove_notification(&priv->notif_wait, &disable_wait);
82 } else {
83 ret = iwl_wait_notification(&priv->notif_wait,
84 &disable_wait, HZ);
85 if (ret)
86 IWL_ERR(priv, "Timed out waiting for PAN disable\n");
87 }
88
89 return ret;
90 }
91
92 static int iwlagn_disconn_pan(struct iwl_priv *priv,
93 struct iwl_rxon_context *ctx,
94 struct iwl_rxon_cmd *send)
95 {
96 __le32 old_filter = send->filter_flags;
97 int ret;
98
99 send->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
100 ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_cmd, CMD_SYNC,
101 sizeof(*send), send);
102
103 send->filter_flags = old_filter;
104
105 return ret;
106 }
107
108 static void iwlagn_update_qos(struct iwl_priv *priv,
109 struct iwl_rxon_context *ctx)
110 {
111 int ret;
112
113 if (!ctx->is_active)
114 return;
115
116 ctx->qos_data.def_qos_parm.qos_flags = 0;
117
118 if (ctx->qos_data.qos_active)
119 ctx->qos_data.def_qos_parm.qos_flags |=
120 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
121
122 if (ctx->ht.enabled)
123 ctx->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
124
125 IWL_DEBUG_INFO(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
126 ctx->qos_data.qos_active,
127 ctx->qos_data.def_qos_parm.qos_flags);
128
129 ret = iwl_dvm_send_cmd_pdu(priv, ctx->qos_cmd, CMD_SYNC,
130 sizeof(struct iwl_qosparam_cmd),
131 &ctx->qos_data.def_qos_parm);
132 if (ret)
133 IWL_DEBUG_QUIET_RFKILL(priv, "Failed to update QoS\n");
134 }
135
136 static int iwlagn_update_beacon(struct iwl_priv *priv,
137 struct ieee80211_vif *vif)
138 {
139 lockdep_assert_held(&priv->mutex);
140
141 dev_kfree_skb(priv->beacon_skb);
142 priv->beacon_skb = ieee80211_beacon_get(priv->hw, vif);
143 if (!priv->beacon_skb)
144 return -ENOMEM;
145 return iwlagn_send_beacon_cmd(priv);
146 }
147
148 static int iwlagn_send_rxon_assoc(struct iwl_priv *priv,
149 struct iwl_rxon_context *ctx)
150 {
151 int ret = 0;
152 struct iwl_rxon_assoc_cmd rxon_assoc;
153 const struct iwl_rxon_cmd *rxon1 = &ctx->staging;
154 const struct iwl_rxon_cmd *rxon2 = &ctx->active;
155
156 if ((rxon1->flags == rxon2->flags) &&
157 (rxon1->filter_flags == rxon2->filter_flags) &&
158 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
159 (rxon1->ofdm_ht_single_stream_basic_rates ==
160 rxon2->ofdm_ht_single_stream_basic_rates) &&
161 (rxon1->ofdm_ht_dual_stream_basic_rates ==
162 rxon2->ofdm_ht_dual_stream_basic_rates) &&
163 (rxon1->ofdm_ht_triple_stream_basic_rates ==
164 rxon2->ofdm_ht_triple_stream_basic_rates) &&
165 (rxon1->acquisition_data == rxon2->acquisition_data) &&
166 (rxon1->rx_chain == rxon2->rx_chain) &&
167 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
168 IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC. Not resending.\n");
169 return 0;
170 }
171
172 rxon_assoc.flags = ctx->staging.flags;
173 rxon_assoc.filter_flags = ctx->staging.filter_flags;
174 rxon_assoc.ofdm_basic_rates = ctx->staging.ofdm_basic_rates;
175 rxon_assoc.cck_basic_rates = ctx->staging.cck_basic_rates;
176 rxon_assoc.reserved1 = 0;
177 rxon_assoc.reserved2 = 0;
178 rxon_assoc.reserved3 = 0;
179 rxon_assoc.ofdm_ht_single_stream_basic_rates =
180 ctx->staging.ofdm_ht_single_stream_basic_rates;
181 rxon_assoc.ofdm_ht_dual_stream_basic_rates =
182 ctx->staging.ofdm_ht_dual_stream_basic_rates;
183 rxon_assoc.rx_chain_select_flags = ctx->staging.rx_chain;
184 rxon_assoc.ofdm_ht_triple_stream_basic_rates =
185 ctx->staging.ofdm_ht_triple_stream_basic_rates;
186 rxon_assoc.acquisition_data = ctx->staging.acquisition_data;
187
188 ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_assoc_cmd,
189 CMD_ASYNC, sizeof(rxon_assoc), &rxon_assoc);
190 return ret;
191 }
192
193 static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val)
194 {
195 u16 new_val;
196 u16 beacon_factor;
197
198 /*
199 * If mac80211 hasn't given us a beacon interval, program
200 * the default into the device (not checking this here
201 * would cause the adjustment below to return the maximum
202 * value, which may break PAN.)
203 */
204 if (!beacon_val)
205 return DEFAULT_BEACON_INTERVAL;
206
207 /*
208 * If the beacon interval we obtained from the peer
209 * is too large, we'll have to wake up more often
210 * (and in IBSS case, we'll beacon too much)
211 *
212 * For example, if max_beacon_val is 4096, and the
213 * requested beacon interval is 7000, we'll have to
214 * use 3500 to be able to wake up on the beacons.
215 *
216 * This could badly influence beacon detection stats.
217 */
218
219 beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val;
220 new_val = beacon_val / beacon_factor;
221
222 if (!new_val)
223 new_val = max_beacon_val;
224
225 return new_val;
226 }
227
228 static int iwl_send_rxon_timing(struct iwl_priv *priv,
229 struct iwl_rxon_context *ctx)
230 {
231 u64 tsf;
232 s32 interval_tm, rem;
233 struct ieee80211_conf *conf = NULL;
234 u16 beacon_int;
235 struct ieee80211_vif *vif = ctx->vif;
236
237 conf = &priv->hw->conf;
238
239 lockdep_assert_held(&priv->mutex);
240
241 memset(&ctx->timing, 0, sizeof(struct iwl_rxon_time_cmd));
242
243 ctx->timing.timestamp = cpu_to_le64(priv->timestamp);
244 ctx->timing.listen_interval = cpu_to_le16(conf->listen_interval);
245
246 beacon_int = vif ? vif->bss_conf.beacon_int : 0;
247
248 /*
249 * TODO: For IBSS we need to get atim_window from mac80211,
250 * for now just always use 0
251 */
252 ctx->timing.atim_window = 0;
253
254 if (ctx->ctxid == IWL_RXON_CTX_PAN &&
255 (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION) &&
256 iwl_is_associated(priv, IWL_RXON_CTX_BSS) &&
257 priv->contexts[IWL_RXON_CTX_BSS].vif &&
258 priv->contexts[IWL_RXON_CTX_BSS].vif->bss_conf.beacon_int) {
259 ctx->timing.beacon_interval =
260 priv->contexts[IWL_RXON_CTX_BSS].timing.beacon_interval;
261 beacon_int = le16_to_cpu(ctx->timing.beacon_interval);
262 } else if (ctx->ctxid == IWL_RXON_CTX_BSS &&
263 iwl_is_associated(priv, IWL_RXON_CTX_PAN) &&
264 priv->contexts[IWL_RXON_CTX_PAN].vif &&
265 priv->contexts[IWL_RXON_CTX_PAN].vif->bss_conf.beacon_int &&
266 (!iwl_is_associated_ctx(ctx) || !ctx->vif ||
267 !ctx->vif->bss_conf.beacon_int)) {
268 ctx->timing.beacon_interval =
269 priv->contexts[IWL_RXON_CTX_PAN].timing.beacon_interval;
270 beacon_int = le16_to_cpu(ctx->timing.beacon_interval);
271 } else {
272 beacon_int = iwl_adjust_beacon_interval(beacon_int,
273 IWL_MAX_UCODE_BEACON_INTERVAL * TIME_UNIT);
274 ctx->timing.beacon_interval = cpu_to_le16(beacon_int);
275 }
276
277 ctx->beacon_int = beacon_int;
278
279 tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
280 interval_tm = beacon_int * TIME_UNIT;
281 rem = do_div(tsf, interval_tm);
282 ctx->timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
283
284 ctx->timing.dtim_period = vif ? (vif->bss_conf.dtim_period ?: 1) : 1;
285
286 IWL_DEBUG_ASSOC(priv,
287 "beacon interval %d beacon timer %d beacon tim %d\n",
288 le16_to_cpu(ctx->timing.beacon_interval),
289 le32_to_cpu(ctx->timing.beacon_init_val),
290 le16_to_cpu(ctx->timing.atim_window));
291
292 return iwl_dvm_send_cmd_pdu(priv, ctx->rxon_timing_cmd,
293 CMD_SYNC, sizeof(ctx->timing), &ctx->timing);
294 }
295
296 static int iwlagn_rxon_disconn(struct iwl_priv *priv,
297 struct iwl_rxon_context *ctx)
298 {
299 int ret;
300 struct iwl_rxon_cmd *active = (void *)&ctx->active;
301
302 if (ctx->ctxid == IWL_RXON_CTX_BSS) {
303 ret = iwlagn_disable_bss(priv, ctx, &ctx->staging);
304 } else {
305 ret = iwlagn_disable_pan(priv, ctx, &ctx->staging);
306 if (ret)
307 return ret;
308 if (ctx->vif) {
309 ret = iwl_send_rxon_timing(priv, ctx);
310 if (ret) {
311 IWL_ERR(priv, "Failed to send timing (%d)!\n", ret);
312 return ret;
313 }
314 ret = iwlagn_disconn_pan(priv, ctx, &ctx->staging);
315 }
316 }
317 if (ret)
318 return ret;
319
320 /*
321 * Un-assoc RXON clears the station table and WEP
322 * keys, so we have to restore those afterwards.
323 */
324 iwl_clear_ucode_stations(priv, ctx);
325 /* update -- might need P2P now */
326 iwl_update_bcast_station(priv, ctx);
327 iwl_restore_stations(priv, ctx);
328 ret = iwl_restore_default_wep_keys(priv, ctx);
329 if (ret) {
330 IWL_ERR(priv, "Failed to restore WEP keys (%d)\n", ret);
331 return ret;
332 }
333
334 memcpy(active, &ctx->staging, sizeof(*active));
335 return 0;
336 }
337
338 static int iwlagn_rxon_connect(struct iwl_priv *priv,
339 struct iwl_rxon_context *ctx)
340 {
341 int ret;
342 struct iwl_rxon_cmd *active = (void *)&ctx->active;
343
344 /* RXON timing must be before associated RXON */
345 if (ctx->ctxid == IWL_RXON_CTX_BSS) {
346 ret = iwl_send_rxon_timing(priv, ctx);
347 if (ret) {
348 IWL_ERR(priv, "Failed to send timing (%d)!\n", ret);
349 return ret;
350 }
351 }
352 /* QoS info may be cleared by previous un-assoc RXON */
353 iwlagn_update_qos(priv, ctx);
354
355 /*
356 * We'll run into this code path when beaconing is
357 * enabled, but then we also need to send the beacon
358 * to the device.
359 */
360 if (ctx->vif && (ctx->vif->type == NL80211_IFTYPE_AP)) {
361 ret = iwlagn_update_beacon(priv, ctx->vif);
362 if (ret) {
363 IWL_ERR(priv,
364 "Error sending required beacon (%d)!\n",
365 ret);
366 return ret;
367 }
368 }
369
370 priv->start_calib = 0;
371 /*
372 * Apply the new configuration.
373 *
374 * Associated RXON doesn't clear the station table in uCode,
375 * so we don't need to restore stations etc. after this.
376 */
377 ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_cmd, CMD_SYNC,
378 sizeof(struct iwl_rxon_cmd), &ctx->staging);
379 if (ret) {
380 IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
381 return ret;
382 }
383 memcpy(active, &ctx->staging, sizeof(*active));
384
385 /* IBSS beacon needs to be sent after setting assoc */
386 if (ctx->vif && (ctx->vif->type == NL80211_IFTYPE_ADHOC))
387 if (iwlagn_update_beacon(priv, ctx->vif))
388 IWL_ERR(priv, "Error sending IBSS beacon\n");
389 iwl_init_sensitivity(priv);
390
391 /*
392 * If we issue a new RXON command which required a tune then
393 * we must send a new TXPOWER command or we won't be able to
394 * Tx any frames.
395 *
396 * It's expected we set power here if channel is changing.
397 */
398 ret = iwl_set_tx_power(priv, priv->tx_power_next, true);
399 if (ret) {
400 IWL_ERR(priv, "Error sending TX power (%d)\n", ret);
401 return ret;
402 }
403
404 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION &&
405 cfg(priv)->ht_params && cfg(priv)->ht_params->smps_mode)
406 ieee80211_request_smps(ctx->vif,
407 cfg(priv)->ht_params->smps_mode);
408
409 return 0;
410 }
411
412 int iwlagn_set_pan_params(struct iwl_priv *priv)
413 {
414 struct iwl_wipan_params_cmd cmd;
415 struct iwl_rxon_context *ctx_bss, *ctx_pan;
416 int slot0 = 300, slot1 = 0;
417 int ret;
418
419 if (priv->valid_contexts == BIT(IWL_RXON_CTX_BSS))
420 return 0;
421
422 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
423
424 lockdep_assert_held(&priv->mutex);
425
426 ctx_bss = &priv->contexts[IWL_RXON_CTX_BSS];
427 ctx_pan = &priv->contexts[IWL_RXON_CTX_PAN];
428
429 /*
430 * If the PAN context is inactive, then we don't need
431 * to update the PAN parameters, the last thing we'll
432 * have done before it goes inactive is making the PAN
433 * parameters be WLAN-only.
434 */
435 if (!ctx_pan->is_active)
436 return 0;
437
438 memset(&cmd, 0, sizeof(cmd));
439
440 /* only 2 slots are currently allowed */
441 cmd.num_slots = 2;
442
443 cmd.slots[0].type = 0; /* BSS */
444 cmd.slots[1].type = 1; /* PAN */
445
446 if (priv->hw_roc_setup) {
447 /* both contexts must be used for this to happen */
448 slot1 = IWL_MIN_SLOT_TIME;
449 slot0 = 3000;
450 } else if (ctx_bss->vif && ctx_pan->vif) {
451 int bcnint = ctx_pan->beacon_int;
452 int dtim = ctx_pan->vif->bss_conf.dtim_period ?: 1;
453
454 /* should be set, but seems unused?? */
455 cmd.flags |= cpu_to_le16(IWL_WIPAN_PARAMS_FLG_SLOTTED_MODE);
456
457 if (ctx_pan->vif->type == NL80211_IFTYPE_AP &&
458 bcnint &&
459 bcnint != ctx_bss->beacon_int) {
460 IWL_ERR(priv,
461 "beacon intervals don't match (%d, %d)\n",
462 ctx_bss->beacon_int, ctx_pan->beacon_int);
463 } else
464 bcnint = max_t(int, bcnint,
465 ctx_bss->beacon_int);
466 if (!bcnint)
467 bcnint = DEFAULT_BEACON_INTERVAL;
468 slot0 = bcnint / 2;
469 slot1 = bcnint - slot0;
470
471 if (test_bit(STATUS_SCAN_HW, &priv->status) ||
472 (!ctx_bss->vif->bss_conf.idle &&
473 !ctx_bss->vif->bss_conf.assoc)) {
474 slot0 = dtim * bcnint * 3 - IWL_MIN_SLOT_TIME;
475 slot1 = IWL_MIN_SLOT_TIME;
476 } else if (!ctx_pan->vif->bss_conf.idle &&
477 !ctx_pan->vif->bss_conf.assoc) {
478 slot1 = dtim * bcnint * 3 - IWL_MIN_SLOT_TIME;
479 slot0 = IWL_MIN_SLOT_TIME;
480 }
481 } else if (ctx_pan->vif) {
482 slot0 = 0;
483 slot1 = max_t(int, 1, ctx_pan->vif->bss_conf.dtim_period) *
484 ctx_pan->beacon_int;
485 slot1 = max_t(int, DEFAULT_BEACON_INTERVAL, slot1);
486
487 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
488 slot0 = slot1 * 3 - IWL_MIN_SLOT_TIME;
489 slot1 = IWL_MIN_SLOT_TIME;
490 }
491 }
492
493 cmd.slots[0].width = cpu_to_le16(slot0);
494 cmd.slots[1].width = cpu_to_le16(slot1);
495
496 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_WIPAN_PARAMS, CMD_SYNC,
497 sizeof(cmd), &cmd);
498 if (ret)
499 IWL_ERR(priv, "Error setting PAN parameters (%d)\n", ret);
500
501 return ret;
502 }
503
504 static void _iwl_set_rxon_ht(struct iwl_priv *priv,
505 struct iwl_ht_config *ht_conf,
506 struct iwl_rxon_context *ctx)
507 {
508 struct iwl_rxon_cmd *rxon = &ctx->staging;
509
510 if (!ctx->ht.enabled) {
511 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
512 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
513 RXON_FLG_HT40_PROT_MSK |
514 RXON_FLG_HT_PROT_MSK);
515 return;
516 }
517
518 /* FIXME: if the definition of ht.protection changed, the "translation"
519 * will be needed for rxon->flags
520 */
521 rxon->flags |= cpu_to_le32(ctx->ht.protection <<
522 RXON_FLG_HT_OPERATING_MODE_POS);
523
524 /* Set up channel bandwidth:
525 * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */
526 /* clear the HT channel mode before set the mode */
527 rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK |
528 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
529 if (iwl_is_ht40_tx_allowed(priv, ctx, NULL)) {
530 /* pure ht40 */
531 if (ctx->ht.protection ==
532 IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) {
533 rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40;
534 /*
535 * Note: control channel is opposite of extension
536 * channel
537 */
538 switch (ctx->ht.extension_chan_offset) {
539 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
540 rxon->flags &=
541 ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
542 break;
543 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
544 rxon->flags |=
545 RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
546 break;
547 }
548 } else {
549 /*
550 * Note: control channel is opposite of extension
551 * channel
552 */
553 switch (ctx->ht.extension_chan_offset) {
554 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
555 rxon->flags &=
556 ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
557 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
558 break;
559 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
560 rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
561 rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED;
562 break;
563 case IEEE80211_HT_PARAM_CHA_SEC_NONE:
564 default:
565 /*
566 * channel location only valid if in Mixed
567 * mode
568 */
569 IWL_ERR(priv,
570 "invalid extension channel offset\n");
571 break;
572 }
573 }
574 } else {
575 rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY;
576 }
577
578 iwlagn_set_rxon_chain(priv, ctx);
579
580 IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X "
581 "extension channel offset 0x%x\n",
582 le32_to_cpu(rxon->flags), ctx->ht.protection,
583 ctx->ht.extension_chan_offset);
584 }
585
586 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf)
587 {
588 struct iwl_rxon_context *ctx;
589
590 for_each_context(priv, ctx)
591 _iwl_set_rxon_ht(priv, ht_conf, ctx);
592 }
593
594 /**
595 * iwl_set_rxon_channel - Set the band and channel values in staging RXON
596 * @ch: requested channel as a pointer to struct ieee80211_channel
597
598 * NOTE: Does not commit to the hardware; it sets appropriate bit fields
599 * in the staging RXON flag structure based on the ch->band
600 */
601 void iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch,
602 struct iwl_rxon_context *ctx)
603 {
604 enum ieee80211_band band = ch->band;
605 u16 channel = ch->hw_value;
606
607 if ((le16_to_cpu(ctx->staging.channel) == channel) &&
608 (priv->band == band))
609 return;
610
611 ctx->staging.channel = cpu_to_le16(channel);
612 if (band == IEEE80211_BAND_5GHZ)
613 ctx->staging.flags &= ~RXON_FLG_BAND_24G_MSK;
614 else
615 ctx->staging.flags |= RXON_FLG_BAND_24G_MSK;
616
617 priv->band = band;
618
619 IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band);
620
621 }
622
623 static void iwl_set_rxon_hwcrypto(struct iwl_priv *priv,
624 struct iwl_rxon_context *ctx, int hw_decrypt)
625 {
626 struct iwl_rxon_cmd *rxon = &ctx->staging;
627
628 if (hw_decrypt)
629 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
630 else
631 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
632
633 }
634
635 /* validate RXON structure is valid */
636 static int iwl_check_rxon_cmd(struct iwl_priv *priv,
637 struct iwl_rxon_context *ctx)
638 {
639 struct iwl_rxon_cmd *rxon = &ctx->staging;
640 u32 errors = 0;
641
642 if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
643 if (rxon->flags & RXON_FLG_TGJ_NARROW_BAND_MSK) {
644 IWL_WARN(priv, "check 2.4G: wrong narrow\n");
645 errors |= BIT(0);
646 }
647 if (rxon->flags & RXON_FLG_RADAR_DETECT_MSK) {
648 IWL_WARN(priv, "check 2.4G: wrong radar\n");
649 errors |= BIT(1);
650 }
651 } else {
652 if (!(rxon->flags & RXON_FLG_SHORT_SLOT_MSK)) {
653 IWL_WARN(priv, "check 5.2G: not short slot!\n");
654 errors |= BIT(2);
655 }
656 if (rxon->flags & RXON_FLG_CCK_MSK) {
657 IWL_WARN(priv, "check 5.2G: CCK!\n");
658 errors |= BIT(3);
659 }
660 }
661 if ((rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1) {
662 IWL_WARN(priv, "mac/bssid mcast!\n");
663 errors |= BIT(4);
664 }
665
666 /* make sure basic rates 6Mbps and 1Mbps are supported */
667 if ((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0 &&
668 (rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0) {
669 IWL_WARN(priv, "neither 1 nor 6 are basic\n");
670 errors |= BIT(5);
671 }
672
673 if (le16_to_cpu(rxon->assoc_id) > 2007) {
674 IWL_WARN(priv, "aid > 2007\n");
675 errors |= BIT(6);
676 }
677
678 if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
679 == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) {
680 IWL_WARN(priv, "CCK and short slot\n");
681 errors |= BIT(7);
682 }
683
684 if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
685 == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) {
686 IWL_WARN(priv, "CCK and auto detect");
687 errors |= BIT(8);
688 }
689
690 if ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
691 RXON_FLG_TGG_PROTECT_MSK)) ==
692 RXON_FLG_TGG_PROTECT_MSK) {
693 IWL_WARN(priv, "TGg but no auto-detect\n");
694 errors |= BIT(9);
695 }
696
697 if (rxon->channel == 0) {
698 IWL_WARN(priv, "zero channel is invalid\n");
699 errors |= BIT(10);
700 }
701
702 WARN(errors, "Invalid RXON (%#x), channel %d",
703 errors, le16_to_cpu(rxon->channel));
704
705 return errors ? -EINVAL : 0;
706 }
707
708 /**
709 * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
710 * @priv: staging_rxon is compared to active_rxon
711 *
712 * If the RXON structure is changing enough to require a new tune,
713 * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
714 * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
715 */
716 static int iwl_full_rxon_required(struct iwl_priv *priv,
717 struct iwl_rxon_context *ctx)
718 {
719 const struct iwl_rxon_cmd *staging = &ctx->staging;
720 const struct iwl_rxon_cmd *active = &ctx->active;
721
722 #define CHK(cond) \
723 if ((cond)) { \
724 IWL_DEBUG_INFO(priv, "need full RXON - " #cond "\n"); \
725 return 1; \
726 }
727
728 #define CHK_NEQ(c1, c2) \
729 if ((c1) != (c2)) { \
730 IWL_DEBUG_INFO(priv, "need full RXON - " \
731 #c1 " != " #c2 " - %d != %d\n", \
732 (c1), (c2)); \
733 return 1; \
734 }
735
736 /* These items are only settable from the full RXON command */
737 CHK(!iwl_is_associated_ctx(ctx));
738 CHK(compare_ether_addr(staging->bssid_addr, active->bssid_addr));
739 CHK(compare_ether_addr(staging->node_addr, active->node_addr));
740 CHK(compare_ether_addr(staging->wlap_bssid_addr,
741 active->wlap_bssid_addr));
742 CHK_NEQ(staging->dev_type, active->dev_type);
743 CHK_NEQ(staging->channel, active->channel);
744 CHK_NEQ(staging->air_propagation, active->air_propagation);
745 CHK_NEQ(staging->ofdm_ht_single_stream_basic_rates,
746 active->ofdm_ht_single_stream_basic_rates);
747 CHK_NEQ(staging->ofdm_ht_dual_stream_basic_rates,
748 active->ofdm_ht_dual_stream_basic_rates);
749 CHK_NEQ(staging->ofdm_ht_triple_stream_basic_rates,
750 active->ofdm_ht_triple_stream_basic_rates);
751 CHK_NEQ(staging->assoc_id, active->assoc_id);
752
753 /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
754 * be updated with the RXON_ASSOC command -- however only some
755 * flag transitions are allowed using RXON_ASSOC */
756
757 /* Check if we are not switching bands */
758 CHK_NEQ(staging->flags & RXON_FLG_BAND_24G_MSK,
759 active->flags & RXON_FLG_BAND_24G_MSK);
760
761 /* Check if we are switching association toggle */
762 CHK_NEQ(staging->filter_flags & RXON_FILTER_ASSOC_MSK,
763 active->filter_flags & RXON_FILTER_ASSOC_MSK);
764
765 #undef CHK
766 #undef CHK_NEQ
767
768 return 0;
769 }
770
771 /**
772 * iwlagn_commit_rxon - commit staging_rxon to hardware
773 *
774 * The RXON command in staging_rxon is committed to the hardware and
775 * the active_rxon structure is updated with the new data. This
776 * function correctly transitions out of the RXON_ASSOC_MSK state if
777 * a HW tune is required based on the RXON structure changes.
778 *
779 * The connect/disconnect flow should be as the following:
780 *
781 * 1. make sure send RXON command with association bit unset if not connect
782 * this should include the channel and the band for the candidate
783 * to be connected to
784 * 2. Add Station before RXON association with the AP
785 * 3. RXON_timing has to send before RXON for connection
786 * 4. full RXON command - associated bit set
787 * 5. use RXON_ASSOC command to update any flags changes
788 */
789 int iwlagn_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
790 {
791 /* cast away the const for active_rxon in this function */
792 struct iwl_rxon_cmd *active = (void *)&ctx->active;
793 bool new_assoc = !!(ctx->staging.filter_flags & RXON_FILTER_ASSOC_MSK);
794 int ret;
795
796 lockdep_assert_held(&priv->mutex);
797
798 if (!iwl_is_alive(priv))
799 return -EBUSY;
800
801 /* This function hardcodes a bunch of dual-mode assumptions */
802 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
803
804 if (!ctx->is_active)
805 return 0;
806
807 /* always get timestamp with Rx frame */
808 ctx->staging.flags |= RXON_FLG_TSF2HOST_MSK;
809
810 /*
811 * force CTS-to-self frames protection if RTS-CTS is not preferred
812 * one aggregation protection method
813 */
814 if (!priv->hw_params.use_rts_for_aggregation)
815 ctx->staging.flags |= RXON_FLG_SELF_CTS_EN;
816
817 if ((ctx->vif && ctx->vif->bss_conf.use_short_slot) ||
818 !(ctx->staging.flags & RXON_FLG_BAND_24G_MSK))
819 ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
820 else
821 ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
822
823 iwl_print_rx_config_cmd(priv, ctx->ctxid);
824 ret = iwl_check_rxon_cmd(priv, ctx);
825 if (ret) {
826 IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n");
827 return -EINVAL;
828 }
829
830 /*
831 * receive commit_rxon request
832 * abort any previous channel switch if still in process
833 */
834 if (test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status) &&
835 (priv->switch_channel != ctx->staging.channel)) {
836 IWL_DEBUG_11H(priv, "abort channel switch on %d\n",
837 le16_to_cpu(priv->switch_channel));
838 iwl_chswitch_done(priv, false);
839 }
840
841 /*
842 * If we don't need to send a full RXON, we can use
843 * iwl_rxon_assoc_cmd which is used to reconfigure filter
844 * and other flags for the current radio configuration.
845 */
846 if (!iwl_full_rxon_required(priv, ctx)) {
847 ret = iwlagn_send_rxon_assoc(priv, ctx);
848 if (ret) {
849 IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret);
850 return ret;
851 }
852
853 memcpy(active, &ctx->staging, sizeof(*active));
854 /*
855 * We do not commit tx power settings while channel changing,
856 * do it now if after settings changed.
857 */
858 iwl_set_tx_power(priv, priv->tx_power_next, false);
859
860 /* make sure we are in the right PS state */
861 iwl_power_update_mode(priv, true);
862
863 return 0;
864 }
865
866 iwl_set_rxon_hwcrypto(priv, ctx, !iwlagn_mod_params.sw_crypto);
867
868 IWL_DEBUG_INFO(priv,
869 "Going to commit RXON\n"
870 " * with%s RXON_FILTER_ASSOC_MSK\n"
871 " * channel = %d\n"
872 " * bssid = %pM\n",
873 (new_assoc ? "" : "out"),
874 le16_to_cpu(ctx->staging.channel),
875 ctx->staging.bssid_addr);
876
877 /*
878 * Always clear associated first, but with the correct config.
879 * This is required as for example station addition for the
880 * AP station must be done after the BSSID is set to correctly
881 * set up filters in the device.
882 */
883 ret = iwlagn_rxon_disconn(priv, ctx);
884 if (ret)
885 return ret;
886
887 ret = iwlagn_set_pan_params(priv);
888 if (ret)
889 return ret;
890
891 if (new_assoc)
892 return iwlagn_rxon_connect(priv, ctx);
893
894 return 0;
895 }
896
897 void iwlagn_config_ht40(struct ieee80211_conf *conf,
898 struct iwl_rxon_context *ctx)
899 {
900 if (conf_is_ht40_minus(conf)) {
901 ctx->ht.extension_chan_offset =
902 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
903 ctx->ht.is_40mhz = true;
904 } else if (conf_is_ht40_plus(conf)) {
905 ctx->ht.extension_chan_offset =
906 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
907 ctx->ht.is_40mhz = true;
908 } else {
909 ctx->ht.extension_chan_offset =
910 IEEE80211_HT_PARAM_CHA_SEC_NONE;
911 ctx->ht.is_40mhz = false;
912 }
913 }
914
915 int iwlagn_mac_config(struct ieee80211_hw *hw, u32 changed)
916 {
917 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
918 struct iwl_rxon_context *ctx;
919 struct ieee80211_conf *conf = &hw->conf;
920 struct ieee80211_channel *channel = conf->channel;
921 const struct iwl_channel_info *ch_info;
922 int ret = 0;
923
924 IWL_DEBUG_MAC80211(priv, "enter: changed %#x\n", changed);
925
926 mutex_lock(&priv->mutex);
927
928 if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
929 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
930 goto out;
931 }
932
933 if (!iwl_is_ready(priv)) {
934 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
935 goto out;
936 }
937
938 if (changed & (IEEE80211_CONF_CHANGE_SMPS |
939 IEEE80211_CONF_CHANGE_CHANNEL)) {
940 /* mac80211 uses static for non-HT which is what we want */
941 priv->current_ht_config.smps = conf->smps_mode;
942
943 /*
944 * Recalculate chain counts.
945 *
946 * If monitor mode is enabled then mac80211 will
947 * set up the SM PS mode to OFF if an HT channel is
948 * configured.
949 */
950 for_each_context(priv, ctx)
951 iwlagn_set_rxon_chain(priv, ctx);
952 }
953
954 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
955 ch_info = iwl_get_channel_info(priv, channel->band,
956 channel->hw_value);
957 if (!is_channel_valid(ch_info)) {
958 IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
959 ret = -EINVAL;
960 goto out;
961 }
962
963 for_each_context(priv, ctx) {
964 /* Configure HT40 channels */
965 if (ctx->ht.enabled != conf_is_ht(conf))
966 ctx->ht.enabled = conf_is_ht(conf);
967
968 if (ctx->ht.enabled) {
969 /* if HT40 is used, it should not change
970 * after associated except channel switch */
971 if (!ctx->ht.is_40mhz ||
972 !iwl_is_associated_ctx(ctx))
973 iwlagn_config_ht40(conf, ctx);
974 } else
975 ctx->ht.is_40mhz = false;
976
977 /*
978 * Default to no protection. Protection mode will
979 * later be set from BSS config in iwl_ht_conf
980 */
981 ctx->ht.protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
982
983 /* if we are switching from ht to 2.4 clear flags
984 * from any ht related info since 2.4 does not
985 * support ht */
986 if (le16_to_cpu(ctx->staging.channel) !=
987 channel->hw_value)
988 ctx->staging.flags = 0;
989
990 iwl_set_rxon_channel(priv, channel, ctx);
991 iwl_set_rxon_ht(priv, &priv->current_ht_config);
992
993 iwl_set_flags_for_band(priv, ctx, channel->band,
994 ctx->vif);
995 }
996
997 iwl_update_bcast_stations(priv);
998
999 /*
1000 * The list of supported rates and rate mask can be different
1001 * for each band; since the band may have changed, reset
1002 * the rate mask to what mac80211 lists.
1003 */
1004 iwl_set_rate(priv);
1005 }
1006
1007 if (changed & (IEEE80211_CONF_CHANGE_PS |
1008 IEEE80211_CONF_CHANGE_IDLE)) {
1009 ret = iwl_power_update_mode(priv, false);
1010 if (ret)
1011 IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n");
1012 }
1013
1014 if (changed & IEEE80211_CONF_CHANGE_POWER) {
1015 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
1016 priv->tx_power_user_lmt, conf->power_level);
1017
1018 iwl_set_tx_power(priv, conf->power_level, false);
1019 }
1020
1021 for_each_context(priv, ctx) {
1022 if (!memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging)))
1023 continue;
1024 iwlagn_commit_rxon(priv, ctx);
1025 }
1026 out:
1027 mutex_unlock(&priv->mutex);
1028 IWL_DEBUG_MAC80211(priv, "leave\n");
1029
1030 return ret;
1031 }
1032
1033 static void iwlagn_check_needed_chains(struct iwl_priv *priv,
1034 struct iwl_rxon_context *ctx,
1035 struct ieee80211_bss_conf *bss_conf)
1036 {
1037 struct ieee80211_vif *vif = ctx->vif;
1038 struct iwl_rxon_context *tmp;
1039 struct ieee80211_sta *sta;
1040 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
1041 struct ieee80211_sta_ht_cap *ht_cap;
1042 bool need_multiple;
1043
1044 lockdep_assert_held(&priv->mutex);
1045
1046 switch (vif->type) {
1047 case NL80211_IFTYPE_STATION:
1048 rcu_read_lock();
1049 sta = ieee80211_find_sta(vif, bss_conf->bssid);
1050 if (!sta) {
1051 /*
1052 * If at all, this can only happen through a race
1053 * when the AP disconnects us while we're still
1054 * setting up the connection, in that case mac80211
1055 * will soon tell us about that.
1056 */
1057 need_multiple = false;
1058 rcu_read_unlock();
1059 break;
1060 }
1061
1062 ht_cap = &sta->ht_cap;
1063
1064 need_multiple = true;
1065
1066 /*
1067 * If the peer advertises no support for receiving 2 and 3
1068 * stream MCS rates, it can't be transmitting them either.
1069 */
1070 if (ht_cap->mcs.rx_mask[1] == 0 &&
1071 ht_cap->mcs.rx_mask[2] == 0) {
1072 need_multiple = false;
1073 } else if (!(ht_cap->mcs.tx_params &
1074 IEEE80211_HT_MCS_TX_DEFINED)) {
1075 /* If it can't TX MCS at all ... */
1076 need_multiple = false;
1077 } else if (ht_cap->mcs.tx_params &
1078 IEEE80211_HT_MCS_TX_RX_DIFF) {
1079 int maxstreams;
1080
1081 /*
1082 * But if it can receive them, it might still not
1083 * be able to transmit them, which is what we need
1084 * to check here -- so check the number of streams
1085 * it advertises for TX (if different from RX).
1086 */
1087
1088 maxstreams = (ht_cap->mcs.tx_params &
1089 IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK);
1090 maxstreams >>=
1091 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
1092 maxstreams += 1;
1093
1094 if (maxstreams <= 1)
1095 need_multiple = false;
1096 }
1097
1098 rcu_read_unlock();
1099 break;
1100 case NL80211_IFTYPE_ADHOC:
1101 /* currently */
1102 need_multiple = false;
1103 break;
1104 default:
1105 /* only AP really */
1106 need_multiple = true;
1107 break;
1108 }
1109
1110 ctx->ht_need_multiple_chains = need_multiple;
1111
1112 if (!need_multiple) {
1113 /* check all contexts */
1114 for_each_context(priv, tmp) {
1115 if (!tmp->vif)
1116 continue;
1117 if (tmp->ht_need_multiple_chains) {
1118 need_multiple = true;
1119 break;
1120 }
1121 }
1122 }
1123
1124 ht_conf->single_chain_sufficient = !need_multiple;
1125 }
1126
1127 static void iwlagn_chain_noise_reset(struct iwl_priv *priv)
1128 {
1129 struct iwl_chain_noise_data *data = &priv->chain_noise_data;
1130 int ret;
1131
1132 if ((data->state == IWL_CHAIN_NOISE_ALIVE) &&
1133 iwl_is_any_associated(priv)) {
1134 struct iwl_calib_chain_noise_reset_cmd cmd;
1135
1136 /* clear data for chain noise calibration algorithm */
1137 data->chain_noise_a = 0;
1138 data->chain_noise_b = 0;
1139 data->chain_noise_c = 0;
1140 data->chain_signal_a = 0;
1141 data->chain_signal_b = 0;
1142 data->chain_signal_c = 0;
1143 data->beacon_count = 0;
1144
1145 memset(&cmd, 0, sizeof(cmd));
1146 iwl_set_calib_hdr(&cmd.hdr,
1147 priv->phy_calib_chain_noise_reset_cmd);
1148 ret = iwl_dvm_send_cmd_pdu(priv,
1149 REPLY_PHY_CALIBRATION_CMD,
1150 CMD_SYNC, sizeof(cmd), &cmd);
1151 if (ret)
1152 IWL_ERR(priv,
1153 "Could not send REPLY_PHY_CALIBRATION_CMD\n");
1154 data->state = IWL_CHAIN_NOISE_ACCUMULATE;
1155 IWL_DEBUG_CALIB(priv, "Run chain_noise_calibrate\n");
1156 }
1157 }
1158
1159 void iwlagn_bss_info_changed(struct ieee80211_hw *hw,
1160 struct ieee80211_vif *vif,
1161 struct ieee80211_bss_conf *bss_conf,
1162 u32 changes)
1163 {
1164 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
1165 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1166 int ret;
1167 bool force = false;
1168
1169 mutex_lock(&priv->mutex);
1170
1171 if (unlikely(!iwl_is_ready(priv))) {
1172 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
1173 mutex_unlock(&priv->mutex);
1174 return;
1175 }
1176
1177 if (unlikely(!ctx->vif)) {
1178 IWL_DEBUG_MAC80211(priv, "leave - vif is NULL\n");
1179 mutex_unlock(&priv->mutex);
1180 return;
1181 }
1182
1183 if (changes & BSS_CHANGED_BEACON_INT)
1184 force = true;
1185
1186 if (changes & BSS_CHANGED_QOS) {
1187 ctx->qos_data.qos_active = bss_conf->qos;
1188 iwlagn_update_qos(priv, ctx);
1189 }
1190
1191 ctx->staging.assoc_id = cpu_to_le16(vif->bss_conf.aid);
1192 if (vif->bss_conf.use_short_preamble)
1193 ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1194 else
1195 ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1196
1197 if (changes & BSS_CHANGED_ASSOC) {
1198 if (bss_conf->assoc) {
1199 priv->timestamp = bss_conf->last_tsf;
1200 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1201 } else {
1202 /*
1203 * If we disassociate while there are pending
1204 * frames, just wake up the queues and let the
1205 * frames "escape" ... This shouldn't really
1206 * be happening to start with, but we should
1207 * not get stuck in this case either since it
1208 * can happen if userspace gets confused.
1209 */
1210 iwlagn_lift_passive_no_rx(priv);
1211
1212 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1213
1214 if (ctx->ctxid == IWL_RXON_CTX_BSS)
1215 priv->have_rekey_data = false;
1216 }
1217
1218 iwlagn_bt_coex_rssi_monitor(priv);
1219 }
1220
1221 if (ctx->ht.enabled) {
1222 ctx->ht.protection = bss_conf->ht_operation_mode &
1223 IEEE80211_HT_OP_MODE_PROTECTION;
1224 ctx->ht.non_gf_sta_present = !!(bss_conf->ht_operation_mode &
1225 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
1226 iwlagn_check_needed_chains(priv, ctx, bss_conf);
1227 iwl_set_rxon_ht(priv, &priv->current_ht_config);
1228 }
1229
1230 iwlagn_set_rxon_chain(priv, ctx);
1231
1232 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
1233 ctx->staging.flags |= RXON_FLG_TGG_PROTECT_MSK;
1234 else
1235 ctx->staging.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
1236
1237 if (bss_conf->use_cts_prot)
1238 ctx->staging.flags |= RXON_FLG_SELF_CTS_EN;
1239 else
1240 ctx->staging.flags &= ~RXON_FLG_SELF_CTS_EN;
1241
1242 memcpy(ctx->staging.bssid_addr, bss_conf->bssid, ETH_ALEN);
1243
1244 if (vif->type == NL80211_IFTYPE_AP ||
1245 vif->type == NL80211_IFTYPE_ADHOC) {
1246 if (vif->bss_conf.enable_beacon) {
1247 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1248 priv->beacon_ctx = ctx;
1249 } else {
1250 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1251 priv->beacon_ctx = NULL;
1252 }
1253 }
1254
1255 /*
1256 * If the ucode decides to do beacon filtering before
1257 * association, it will lose beacons that are needed
1258 * before sending frames out on passive channels. This
1259 * causes association failures on those channels. Enable
1260 * receiving beacons in such cases.
1261 */
1262
1263 if (vif->type == NL80211_IFTYPE_STATION) {
1264 if (!bss_conf->assoc)
1265 ctx->staging.filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
1266 else
1267 ctx->staging.filter_flags &=
1268 ~RXON_FILTER_BCON_AWARE_MSK;
1269 }
1270
1271 if (force || memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging)))
1272 iwlagn_commit_rxon(priv, ctx);
1273
1274 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) {
1275 /*
1276 * The chain noise calibration will enable PM upon
1277 * completion. If calibration has already been run
1278 * then we need to enable power management here.
1279 */
1280 if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
1281 iwl_power_update_mode(priv, false);
1282
1283 /* Enable RX differential gain and sensitivity calibrations */
1284 if (!priv->disable_chain_noise_cal)
1285 iwlagn_chain_noise_reset(priv);
1286 priv->start_calib = 1;
1287 }
1288
1289 if (changes & BSS_CHANGED_IBSS) {
1290 ret = iwlagn_manage_ibss_station(priv, vif,
1291 bss_conf->ibss_joined);
1292 if (ret)
1293 IWL_ERR(priv, "failed to %s IBSS station %pM\n",
1294 bss_conf->ibss_joined ? "add" : "remove",
1295 bss_conf->bssid);
1296 }
1297
1298 if (changes & BSS_CHANGED_BEACON && vif->type == NL80211_IFTYPE_ADHOC &&
1299 priv->beacon_ctx) {
1300 if (iwlagn_update_beacon(priv, vif))
1301 IWL_ERR(priv, "Error sending IBSS beacon\n");
1302 }
1303
1304 mutex_unlock(&priv->mutex);
1305 }
1306
1307 void iwlagn_post_scan(struct iwl_priv *priv)
1308 {
1309 struct iwl_rxon_context *ctx;
1310
1311 /*
1312 * We do not commit power settings while scan is pending,
1313 * do it now if the settings changed.
1314 */
1315 iwl_power_set_mode(priv, &priv->power_data.sleep_cmd_next, false);
1316 iwl_set_tx_power(priv, priv->tx_power_next, false);
1317
1318 /*
1319 * Since setting the RXON may have been deferred while
1320 * performing the scan, fire one off if needed
1321 */
1322 for_each_context(priv, ctx)
1323 if (memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging)))
1324 iwlagn_commit_rxon(priv, ctx);
1325
1326 iwlagn_set_pan_params(priv);
1327 }
Linux kernel - Deliverables
This page took 0.078085 seconds and 6 git commands to generate.