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2295c66b JB |
1 | /****************************************************************************** |
2 | * | |
3 | * Copyright(c) 2003 - 2010 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 "iwl-dev.h" | |
28 | #include "iwl-agn.h" | |
29 | #include "iwl-sta.h" | |
30 | #include "iwl-core.h" | |
31 | #include "iwl-agn-calib.h" | |
32 | ||
33 | static int iwlagn_disable_bss(struct iwl_priv *priv, | |
34 | struct iwl_rxon_context *ctx, | |
35 | struct iwl_rxon_cmd *send) | |
36 | { | |
37 | __le32 old_filter = send->filter_flags; | |
38 | int ret; | |
39 | ||
40 | send->filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
41 | ret = iwl_send_cmd_pdu(priv, ctx->rxon_cmd, sizeof(*send), send); | |
42 | ||
43 | send->filter_flags = old_filter; | |
44 | ||
45 | if (ret) | |
46 | IWL_ERR(priv, "Error clearing ASSOC_MSK on BSS (%d)\n", ret); | |
47 | ||
48 | return ret; | |
49 | } | |
50 | ||
51 | static int iwlagn_disable_pan(struct iwl_priv *priv, | |
52 | struct iwl_rxon_context *ctx, | |
53 | struct iwl_rxon_cmd *send) | |
54 | { | |
311dce71 | 55 | struct iwl_notification_wait disable_wait; |
2295c66b JB |
56 | __le32 old_filter = send->filter_flags; |
57 | u8 old_dev_type = send->dev_type; | |
58 | int ret; | |
59 | ||
311dce71 JB |
60 | iwlagn_init_notification_wait(priv, &disable_wait, NULL, |
61 | REPLY_WIPAN_DEACTIVATION_COMPLETE); | |
62 | ||
2295c66b JB |
63 | send->filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
64 | send->dev_type = RXON_DEV_TYPE_P2P; | |
65 | ret = iwl_send_cmd_pdu(priv, ctx->rxon_cmd, sizeof(*send), send); | |
66 | ||
67 | send->filter_flags = old_filter; | |
68 | send->dev_type = old_dev_type; | |
69 | ||
311dce71 | 70 | if (ret) { |
2295c66b | 71 | IWL_ERR(priv, "Error disabling PAN (%d)\n", ret); |
311dce71 JB |
72 | iwlagn_remove_notification(priv, &disable_wait); |
73 | } else { | |
74 | signed long wait_res; | |
2295c66b | 75 | |
311dce71 | 76 | wait_res = iwlagn_wait_notification(priv, &disable_wait, HZ); |
2a1a78d2 | 77 | if (wait_res == 0) { |
311dce71 | 78 | IWL_ERR(priv, "Timed out waiting for PAN disable\n"); |
2a1a78d2 JB |
79 | ret = -EIO; |
80 | } | |
311dce71 | 81 | } |
2295c66b JB |
82 | |
83 | return ret; | |
84 | } | |
85 | ||
f4115d46 SZ |
86 | static void iwlagn_update_qos(struct iwl_priv *priv, |
87 | struct iwl_rxon_context *ctx) | |
88 | { | |
89 | int ret; | |
90 | ||
91 | if (!ctx->is_active) | |
92 | return; | |
93 | ||
94 | ctx->qos_data.def_qos_parm.qos_flags = 0; | |
95 | ||
96 | if (ctx->qos_data.qos_active) | |
97 | ctx->qos_data.def_qos_parm.qos_flags |= | |
98 | QOS_PARAM_FLG_UPDATE_EDCA_MSK; | |
99 | ||
100 | if (ctx->ht.enabled) | |
101 | ctx->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK; | |
102 | ||
103 | IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n", | |
104 | ctx->qos_data.qos_active, | |
105 | ctx->qos_data.def_qos_parm.qos_flags); | |
106 | ||
107 | ret = iwl_send_cmd_pdu(priv, ctx->qos_cmd, | |
108 | sizeof(struct iwl_qosparam_cmd), | |
109 | &ctx->qos_data.def_qos_parm); | |
110 | if (ret) | |
111 | IWL_ERR(priv, "Failed to update QoS\n"); | |
112 | } | |
113 | ||
bd50a8ab JB |
114 | static int iwlagn_update_beacon(struct iwl_priv *priv, |
115 | struct ieee80211_vif *vif) | |
116 | { | |
117 | lockdep_assert_held(&priv->mutex); | |
118 | ||
119 | dev_kfree_skb(priv->beacon_skb); | |
120 | priv->beacon_skb = ieee80211_beacon_get(priv->hw, vif); | |
121 | if (!priv->beacon_skb) | |
122 | return -ENOMEM; | |
123 | return iwlagn_send_beacon_cmd(priv); | |
124 | } | |
125 | ||
2295c66b JB |
126 | /** |
127 | * iwlagn_commit_rxon - commit staging_rxon to hardware | |
128 | * | |
129 | * The RXON command in staging_rxon is committed to the hardware and | |
130 | * the active_rxon structure is updated with the new data. This | |
131 | * function correctly transitions out of the RXON_ASSOC_MSK state if | |
132 | * a HW tune is required based on the RXON structure changes. | |
133 | */ | |
134 | int iwlagn_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx) | |
135 | { | |
136 | /* cast away the const for active_rxon in this function */ | |
137 | struct iwl_rxon_cmd *active = (void *)&ctx->active; | |
2295c66b | 138 | bool new_assoc = !!(ctx->staging.filter_flags & RXON_FILTER_ASSOC_MSK); |
2b5f7a67 | 139 | bool old_assoc = !!(ctx->active.filter_flags & RXON_FILTER_ASSOC_MSK); |
2295c66b JB |
140 | int ret; |
141 | ||
142 | lockdep_assert_held(&priv->mutex); | |
143 | ||
adb90a00 WYG |
144 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
145 | return -EINVAL; | |
146 | ||
2295c66b JB |
147 | if (!iwl_is_alive(priv)) |
148 | return -EBUSY; | |
149 | ||
150 | /* This function hardcodes a bunch of dual-mode assumptions */ | |
151 | BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2); | |
152 | ||
153 | if (!ctx->is_active) | |
154 | return 0; | |
155 | ||
156 | /* always get timestamp with Rx frame */ | |
157 | ctx->staging.flags |= RXON_FLG_TSF2HOST_MSK; | |
158 | ||
9b9190d9 JB |
159 | if (ctx->ctxid == IWL_RXON_CTX_PAN && priv->_agn.hw_roc_channel) { |
160 | struct ieee80211_channel *chan = priv->_agn.hw_roc_channel; | |
161 | ||
162 | iwl_set_rxon_channel(priv, chan, ctx); | |
163 | iwl_set_flags_for_band(priv, ctx, chan->band, NULL); | |
164 | ctx->staging.filter_flags |= | |
165 | RXON_FILTER_ASSOC_MSK | | |
166 | RXON_FILTER_PROMISC_MSK | | |
167 | RXON_FILTER_CTL2HOST_MSK; | |
168 | ctx->staging.dev_type = RXON_DEV_TYPE_P2P; | |
169 | new_assoc = true; | |
170 | ||
171 | if (memcmp(&ctx->staging, &ctx->active, | |
172 | sizeof(ctx->staging)) == 0) | |
173 | return 0; | |
174 | } | |
175 | ||
2295c66b JB |
176 | if ((ctx->vif && ctx->vif->bss_conf.use_short_slot) || |
177 | !(ctx->staging.flags & RXON_FLG_BAND_24G_MSK)) | |
178 | ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; | |
179 | else | |
180 | ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; | |
181 | ||
182 | ret = iwl_check_rxon_cmd(priv, ctx); | |
183 | if (ret) { | |
184 | IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n"); | |
185 | return -EINVAL; | |
186 | } | |
187 | ||
188 | /* | |
189 | * receive commit_rxon request | |
190 | * abort any previous channel switch if still in process | |
191 | */ | |
192 | if (priv->switch_rxon.switch_in_progress && | |
193 | (priv->switch_rxon.channel != ctx->staging.channel)) { | |
194 | IWL_DEBUG_11H(priv, "abort channel switch on %d\n", | |
195 | le16_to_cpu(priv->switch_rxon.channel)); | |
196 | iwl_chswitch_done(priv, false); | |
197 | } | |
198 | ||
199 | /* | |
200 | * If we don't need to send a full RXON, we can use | |
201 | * iwl_rxon_assoc_cmd which is used to reconfigure filter | |
202 | * and other flags for the current radio configuration. | |
203 | */ | |
204 | if (!iwl_full_rxon_required(priv, ctx)) { | |
205 | ret = iwl_send_rxon_assoc(priv, ctx); | |
206 | if (ret) { | |
207 | IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret); | |
208 | return ret; | |
209 | } | |
210 | ||
211 | memcpy(active, &ctx->staging, sizeof(*active)); | |
212 | iwl_print_rx_config_cmd(priv, ctx); | |
213 | return 0; | |
214 | } | |
215 | ||
216 | if (priv->cfg->ops->hcmd->set_pan_params) { | |
217 | ret = priv->cfg->ops->hcmd->set_pan_params(priv); | |
218 | if (ret) | |
219 | return ret; | |
220 | } | |
221 | ||
222 | iwl_set_rxon_hwcrypto(priv, ctx, !priv->cfg->mod_params->sw_crypto); | |
223 | ||
224 | IWL_DEBUG_INFO(priv, | |
225 | "Going to commit RXON\n" | |
226 | " * with%s RXON_FILTER_ASSOC_MSK\n" | |
227 | " * channel = %d\n" | |
228 | " * bssid = %pM\n", | |
229 | (new_assoc ? "" : "out"), | |
230 | le16_to_cpu(ctx->staging.channel), | |
231 | ctx->staging.bssid_addr); | |
232 | ||
233 | /* | |
52d980c0 JB |
234 | * Always clear associated first, but with the correct config. |
235 | * This is required as for example station addition for the | |
236 | * AP station must be done after the BSSID is set to correctly | |
237 | * set up filters in the device. | |
2295c66b | 238 | */ |
2b5f7a67 JB |
239 | if ((old_assoc && new_assoc) || !new_assoc) { |
240 | if (ctx->ctxid == IWL_RXON_CTX_BSS) | |
241 | ret = iwlagn_disable_bss(priv, ctx, &ctx->staging); | |
242 | else | |
243 | ret = iwlagn_disable_pan(priv, ctx, &ctx->staging); | |
244 | if (ret) | |
245 | return ret; | |
2295c66b | 246 | |
2b5f7a67 | 247 | memcpy(active, &ctx->staging, sizeof(*active)); |
2295c66b | 248 | |
2b5f7a67 JB |
249 | /* |
250 | * Un-assoc RXON clears the station table and WEP | |
251 | * keys, so we have to restore those afterwards. | |
252 | */ | |
253 | iwl_clear_ucode_stations(priv, ctx); | |
254 | iwl_restore_stations(priv, ctx); | |
255 | ret = iwl_restore_default_wep_keys(priv, ctx); | |
256 | if (ret) { | |
257 | IWL_ERR(priv, "Failed to restore WEP keys (%d)\n", ret); | |
258 | return ret; | |
259 | } | |
2295c66b JB |
260 | } |
261 | ||
262 | /* RXON timing must be before associated RXON */ | |
263 | ret = iwl_send_rxon_timing(priv, ctx); | |
264 | if (ret) { | |
265 | IWL_ERR(priv, "Failed to send timing (%d)!\n", ret); | |
266 | return ret; | |
267 | } | |
268 | ||
269 | if (new_assoc) { | |
f4115d46 SZ |
270 | /* QoS info may be cleared by previous un-assoc RXON */ |
271 | iwlagn_update_qos(priv, ctx); | |
272 | ||
bd50a8ab JB |
273 | /* |
274 | * We'll run into this code path when beaconing is | |
275 | * enabled, but then we also need to send the beacon | |
276 | * to the device. | |
277 | */ | |
278 | if (ctx->vif && (ctx->vif->type == NL80211_IFTYPE_AP)) { | |
279 | ret = iwlagn_update_beacon(priv, ctx->vif); | |
280 | if (ret) { | |
281 | IWL_ERR(priv, | |
282 | "Error sending required beacon (%d)!\n", | |
283 | ret); | |
284 | return ret; | |
285 | } | |
2295c66b JB |
286 | } |
287 | ||
288 | priv->start_calib = 0; | |
289 | /* | |
290 | * Apply the new configuration. | |
291 | * | |
292 | * Associated RXON doesn't clear the station table in uCode, | |
293 | * so we don't need to restore stations etc. after this. | |
294 | */ | |
295 | ret = iwl_send_cmd_pdu(priv, ctx->rxon_cmd, | |
296 | sizeof(struct iwl_rxon_cmd), &ctx->staging); | |
297 | if (ret) { | |
298 | IWL_ERR(priv, "Error setting new RXON (%d)\n", ret); | |
299 | return ret; | |
300 | } | |
301 | memcpy(active, &ctx->staging, sizeof(*active)); | |
bd50a8ab | 302 | |
2b5f7a67 JB |
303 | iwl_reprogram_ap_sta(priv, ctx); |
304 | ||
bd50a8ab JB |
305 | /* IBSS beacon needs to be sent after setting assoc */ |
306 | if (ctx->vif && (ctx->vif->type == NL80211_IFTYPE_ADHOC)) | |
307 | if (iwlagn_update_beacon(priv, ctx->vif)) | |
308 | IWL_ERR(priv, "Error sending IBSS beacon\n"); | |
2295c66b JB |
309 | } |
310 | ||
311 | iwl_print_rx_config_cmd(priv, ctx); | |
312 | ||
313 | iwl_init_sensitivity(priv); | |
314 | ||
315 | /* | |
316 | * If we issue a new RXON command which required a tune then we must | |
317 | * send a new TXPOWER command or we won't be able to Tx any frames. | |
318 | * | |
f844a709 | 319 | * It's expected we set power here if channel is changing. |
2295c66b | 320 | */ |
f844a709 | 321 | ret = iwl_set_tx_power(priv, priv->tx_power_next, true); |
2295c66b JB |
322 | if (ret) { |
323 | IWL_ERR(priv, "Error sending TX power (%d)\n", ret); | |
324 | return ret; | |
325 | } | |
326 | ||
327 | return 0; | |
328 | } | |
329 | ||
330 | int iwlagn_mac_config(struct ieee80211_hw *hw, u32 changed) | |
331 | { | |
332 | struct iwl_priv *priv = hw->priv; | |
333 | struct iwl_rxon_context *ctx; | |
334 | struct ieee80211_conf *conf = &hw->conf; | |
335 | struct ieee80211_channel *channel = conf->channel; | |
336 | const struct iwl_channel_info *ch_info; | |
337 | int ret = 0; | |
338 | ||
339 | IWL_DEBUG_MAC80211(priv, "changed %#x", changed); | |
340 | ||
341 | mutex_lock(&priv->mutex); | |
342 | ||
343 | if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) { | |
344 | IWL_DEBUG_MAC80211(priv, "leave - scanning\n"); | |
345 | goto out; | |
346 | } | |
347 | ||
348 | if (!iwl_is_ready(priv)) { | |
349 | IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); | |
350 | goto out; | |
351 | } | |
352 | ||
353 | if (changed & (IEEE80211_CONF_CHANGE_SMPS | | |
354 | IEEE80211_CONF_CHANGE_CHANNEL)) { | |
355 | /* mac80211 uses static for non-HT which is what we want */ | |
356 | priv->current_ht_config.smps = conf->smps_mode; | |
357 | ||
358 | /* | |
359 | * Recalculate chain counts. | |
360 | * | |
361 | * If monitor mode is enabled then mac80211 will | |
362 | * set up the SM PS mode to OFF if an HT channel is | |
363 | * configured. | |
364 | */ | |
365 | if (priv->cfg->ops->hcmd->set_rxon_chain) | |
366 | for_each_context(priv, ctx) | |
367 | priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); | |
368 | } | |
369 | ||
370 | if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { | |
371 | unsigned long flags; | |
372 | ||
373 | ch_info = iwl_get_channel_info(priv, channel->band, | |
374 | channel->hw_value); | |
375 | if (!is_channel_valid(ch_info)) { | |
376 | IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n"); | |
377 | ret = -EINVAL; | |
378 | goto out; | |
379 | } | |
380 | ||
381 | spin_lock_irqsave(&priv->lock, flags); | |
382 | ||
383 | for_each_context(priv, ctx) { | |
384 | /* Configure HT40 channels */ | |
7caa2316 | 385 | if (ctx->ht.enabled != conf_is_ht(conf)) |
35a6eb36 | 386 | ctx->ht.enabled = conf_is_ht(conf); |
35a6eb36 | 387 | |
2295c66b JB |
388 | if (ctx->ht.enabled) { |
389 | if (conf_is_ht40_minus(conf)) { | |
390 | ctx->ht.extension_chan_offset = | |
391 | IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
392 | ctx->ht.is_40mhz = true; | |
393 | } else if (conf_is_ht40_plus(conf)) { | |
394 | ctx->ht.extension_chan_offset = | |
395 | IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
396 | ctx->ht.is_40mhz = true; | |
397 | } else { | |
398 | ctx->ht.extension_chan_offset = | |
399 | IEEE80211_HT_PARAM_CHA_SEC_NONE; | |
400 | ctx->ht.is_40mhz = false; | |
401 | } | |
402 | } else | |
403 | ctx->ht.is_40mhz = false; | |
404 | ||
405 | /* | |
406 | * Default to no protection. Protection mode will | |
407 | * later be set from BSS config in iwl_ht_conf | |
408 | */ | |
409 | ctx->ht.protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE; | |
410 | ||
411 | /* if we are switching from ht to 2.4 clear flags | |
412 | * from any ht related info since 2.4 does not | |
413 | * support ht */ | |
414 | if (le16_to_cpu(ctx->staging.channel) != | |
415 | channel->hw_value) | |
416 | ctx->staging.flags = 0; | |
417 | ||
418 | iwl_set_rxon_channel(priv, channel, ctx); | |
419 | iwl_set_rxon_ht(priv, &priv->current_ht_config); | |
420 | ||
421 | iwl_set_flags_for_band(priv, ctx, channel->band, | |
422 | ctx->vif); | |
423 | } | |
424 | ||
425 | spin_unlock_irqrestore(&priv->lock, flags); | |
426 | ||
427 | iwl_update_bcast_stations(priv); | |
428 | ||
429 | /* | |
430 | * The list of supported rates and rate mask can be different | |
431 | * for each band; since the band may have changed, reset | |
432 | * the rate mask to what mac80211 lists. | |
433 | */ | |
434 | iwl_set_rate(priv); | |
435 | } | |
436 | ||
437 | if (changed & (IEEE80211_CONF_CHANGE_PS | | |
438 | IEEE80211_CONF_CHANGE_IDLE)) { | |
439 | ret = iwl_power_update_mode(priv, false); | |
440 | if (ret) | |
441 | IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n"); | |
442 | } | |
443 | ||
444 | if (changed & IEEE80211_CONF_CHANGE_POWER) { | |
445 | IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n", | |
446 | priv->tx_power_user_lmt, conf->power_level); | |
447 | ||
448 | iwl_set_tx_power(priv, conf->power_level, false); | |
449 | } | |
450 | ||
451 | for_each_context(priv, ctx) { | |
452 | if (!memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging))) | |
453 | continue; | |
454 | iwlagn_commit_rxon(priv, ctx); | |
455 | } | |
456 | out: | |
457 | mutex_unlock(&priv->mutex); | |
458 | return ret; | |
459 | } | |
460 | ||
2295c66b JB |
461 | static void iwlagn_check_needed_chains(struct iwl_priv *priv, |
462 | struct iwl_rxon_context *ctx, | |
463 | struct ieee80211_bss_conf *bss_conf) | |
464 | { | |
465 | struct ieee80211_vif *vif = ctx->vif; | |
466 | struct iwl_rxon_context *tmp; | |
467 | struct ieee80211_sta *sta; | |
468 | struct iwl_ht_config *ht_conf = &priv->current_ht_config; | |
850bedcc | 469 | struct ieee80211_sta_ht_cap *ht_cap; |
2295c66b JB |
470 | bool need_multiple; |
471 | ||
472 | lockdep_assert_held(&priv->mutex); | |
473 | ||
474 | switch (vif->type) { | |
475 | case NL80211_IFTYPE_STATION: | |
476 | rcu_read_lock(); | |
477 | sta = ieee80211_find_sta(vif, bss_conf->bssid); | |
850bedcc | 478 | if (!sta) { |
2295c66b JB |
479 | /* |
480 | * If at all, this can only happen through a race | |
481 | * when the AP disconnects us while we're still | |
482 | * setting up the connection, in that case mac80211 | |
483 | * will soon tell us about that. | |
484 | */ | |
485 | need_multiple = false; | |
850bedcc JB |
486 | rcu_read_unlock(); |
487 | break; | |
488 | } | |
489 | ||
490 | ht_cap = &sta->ht_cap; | |
491 | ||
492 | need_multiple = true; | |
493 | ||
494 | /* | |
495 | * If the peer advertises no support for receiving 2 and 3 | |
496 | * stream MCS rates, it can't be transmitting them either. | |
497 | */ | |
498 | if (ht_cap->mcs.rx_mask[1] == 0 && | |
499 | ht_cap->mcs.rx_mask[2] == 0) { | |
500 | need_multiple = false; | |
501 | } else if (!(ht_cap->mcs.tx_params & | |
502 | IEEE80211_HT_MCS_TX_DEFINED)) { | |
503 | /* If it can't TX MCS at all ... */ | |
504 | need_multiple = false; | |
505 | } else if (ht_cap->mcs.tx_params & | |
506 | IEEE80211_HT_MCS_TX_RX_DIFF) { | |
507 | int maxstreams; | |
508 | ||
509 | /* | |
510 | * But if it can receive them, it might still not | |
511 | * be able to transmit them, which is what we need | |
512 | * to check here -- so check the number of streams | |
513 | * it advertises for TX (if different from RX). | |
514 | */ | |
515 | ||
516 | maxstreams = (ht_cap->mcs.tx_params & | |
517 | IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK); | |
518 | maxstreams >>= | |
519 | IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; | |
520 | maxstreams += 1; | |
521 | ||
522 | if (maxstreams <= 1) | |
523 | need_multiple = false; | |
2295c66b | 524 | } |
850bedcc | 525 | |
2295c66b JB |
526 | rcu_read_unlock(); |
527 | break; | |
528 | case NL80211_IFTYPE_ADHOC: | |
529 | /* currently */ | |
530 | need_multiple = false; | |
531 | break; | |
532 | default: | |
533 | /* only AP really */ | |
534 | need_multiple = true; | |
535 | break; | |
536 | } | |
537 | ||
538 | ctx->ht_need_multiple_chains = need_multiple; | |
539 | ||
540 | if (!need_multiple) { | |
541 | /* check all contexts */ | |
542 | for_each_context(priv, tmp) { | |
543 | if (!tmp->vif) | |
544 | continue; | |
545 | if (tmp->ht_need_multiple_chains) { | |
546 | need_multiple = true; | |
547 | break; | |
548 | } | |
549 | } | |
550 | } | |
551 | ||
552 | ht_conf->single_chain_sufficient = !need_multiple; | |
553 | } | |
554 | ||
555 | void iwlagn_bss_info_changed(struct ieee80211_hw *hw, | |
556 | struct ieee80211_vif *vif, | |
557 | struct ieee80211_bss_conf *bss_conf, | |
558 | u32 changes) | |
559 | { | |
560 | struct iwl_priv *priv = hw->priv; | |
561 | struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); | |
562 | int ret; | |
563 | bool force = false; | |
564 | ||
565 | mutex_lock(&priv->mutex); | |
566 | ||
ae0b693c | 567 | if (unlikely(!iwl_is_ready(priv))) { |
14a085e7 WYG |
568 | IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); |
569 | mutex_unlock(&priv->mutex); | |
ae0b693c SZ |
570 | return; |
571 | } | |
572 | ||
573 | if (unlikely(!ctx->vif)) { | |
574 | IWL_DEBUG_MAC80211(priv, "leave - vif is NULL\n"); | |
893654de JB |
575 | mutex_unlock(&priv->mutex); |
576 | return; | |
577 | } | |
578 | ||
2295c66b JB |
579 | if (changes & BSS_CHANGED_BEACON_INT) |
580 | force = true; | |
581 | ||
582 | if (changes & BSS_CHANGED_QOS) { | |
583 | ctx->qos_data.qos_active = bss_conf->qos; | |
584 | iwlagn_update_qos(priv, ctx); | |
585 | } | |
586 | ||
587 | ctx->staging.assoc_id = cpu_to_le16(vif->bss_conf.aid); | |
588 | if (vif->bss_conf.use_short_preamble) | |
589 | ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; | |
590 | else | |
591 | ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; | |
592 | ||
593 | if (changes & BSS_CHANGED_ASSOC) { | |
594 | if (bss_conf->assoc) { | |
2295c66b JB |
595 | priv->timestamp = bss_conf->timestamp; |
596 | ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; | |
597 | } else { | |
598 | ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
2295c66b JB |
599 | } |
600 | } | |
601 | ||
602 | if (ctx->ht.enabled) { | |
603 | ctx->ht.protection = bss_conf->ht_operation_mode & | |
604 | IEEE80211_HT_OP_MODE_PROTECTION; | |
605 | ctx->ht.non_gf_sta_present = !!(bss_conf->ht_operation_mode & | |
606 | IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); | |
607 | iwlagn_check_needed_chains(priv, ctx, bss_conf); | |
b2769b84 | 608 | iwl_set_rxon_ht(priv, &priv->current_ht_config); |
2295c66b JB |
609 | } |
610 | ||
611 | if (priv->cfg->ops->hcmd->set_rxon_chain) | |
612 | priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx); | |
613 | ||
614 | if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ)) | |
615 | ctx->staging.flags |= RXON_FLG_TGG_PROTECT_MSK; | |
616 | else | |
617 | ctx->staging.flags &= ~RXON_FLG_TGG_PROTECT_MSK; | |
618 | ||
619 | if (bss_conf->use_cts_prot) | |
620 | ctx->staging.flags |= RXON_FLG_SELF_CTS_EN; | |
621 | else | |
622 | ctx->staging.flags &= ~RXON_FLG_SELF_CTS_EN; | |
623 | ||
624 | memcpy(ctx->staging.bssid_addr, bss_conf->bssid, ETH_ALEN); | |
625 | ||
626 | if (vif->type == NL80211_IFTYPE_AP || | |
627 | vif->type == NL80211_IFTYPE_ADHOC) { | |
628 | if (vif->bss_conf.enable_beacon) { | |
629 | ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; | |
630 | priv->beacon_ctx = ctx; | |
631 | } else { | |
632 | ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
633 | priv->beacon_ctx = NULL; | |
634 | } | |
635 | } | |
636 | ||
637 | if (force || memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging))) | |
638 | iwlagn_commit_rxon(priv, ctx); | |
639 | ||
8da8e628 JB |
640 | if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) { |
641 | /* | |
642 | * The chain noise calibration will enable PM upon | |
643 | * completion. If calibration has already been run | |
644 | * then we need to enable power management here. | |
645 | */ | |
646 | if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE) | |
647 | iwl_power_update_mode(priv, false); | |
648 | ||
649 | /* Enable RX differential gain and sensitivity calibrations */ | |
650 | iwl_chain_noise_reset(priv); | |
651 | priv->start_calib = 1; | |
652 | } | |
653 | ||
2295c66b JB |
654 | if (changes & BSS_CHANGED_IBSS) { |
655 | ret = iwlagn_manage_ibss_station(priv, vif, | |
656 | bss_conf->ibss_joined); | |
657 | if (ret) | |
658 | IWL_ERR(priv, "failed to %s IBSS station %pM\n", | |
659 | bss_conf->ibss_joined ? "add" : "remove", | |
660 | bss_conf->bssid); | |
661 | } | |
662 | ||
bd50a8ab JB |
663 | if (changes & BSS_CHANGED_BEACON && vif->type == NL80211_IFTYPE_ADHOC && |
664 | priv->beacon_ctx) { | |
665 | if (iwlagn_update_beacon(priv, vif)) | |
666 | IWL_ERR(priv, "Error sending IBSS beacon\n"); | |
667 | } | |
668 | ||
2295c66b JB |
669 | mutex_unlock(&priv->mutex); |
670 | } | |
ae79d23d JB |
671 | |
672 | void iwlagn_post_scan(struct iwl_priv *priv) | |
673 | { | |
674 | struct iwl_rxon_context *ctx; | |
675 | ||
676 | /* | |
677 | * Since setting the RXON may have been deferred while | |
678 | * performing the scan, fire one off if needed | |
679 | */ | |
680 | for_each_context(priv, ctx) | |
681 | if (memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging))) | |
682 | iwlagn_commit_rxon(priv, ctx); | |
683 | ||
684 | if (priv->cfg->ops->hcmd->set_pan_params) | |
685 | priv->cfg->ops->hcmd->set_pan_params(priv); | |
686 | } |