1 /******************************************************************************
3 * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
21 * Contact Information:
22 * Intel Linux Wireless <ilw@linux.intel.com>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25 *****************************************************************************/
30 #include "iwl-agn-calib.h"
31 #include "iwl-trans.h"
32 #include "iwl-shared.h"
34 static int iwlagn_disable_bss(struct iwl_priv *priv,
35 struct iwl_rxon_context *ctx,
36 struct iwl_rxon_cmd *send)
38 __le32 old_filter = send->filter_flags;
41 send->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
42 ret = iwl_trans_send_cmd_pdu(trans(priv), ctx->rxon_cmd,
43 CMD_SYNC, sizeof(*send), send);
45 send->filter_flags = old_filter;
48 IWL_DEBUG_QUIET_RFKILL(priv,
49 "Error clearing ASSOC_MSK on BSS (%d)\n", ret);
54 static int iwlagn_disable_pan(struct iwl_priv *priv,
55 struct iwl_rxon_context *ctx,
56 struct iwl_rxon_cmd *send)
58 struct iwl_notification_wait disable_wait;
59 __le32 old_filter = send->filter_flags;
60 u8 old_dev_type = send->dev_type;
63 iwlagn_init_notification_wait(priv, &disable_wait,
64 REPLY_WIPAN_DEACTIVATION_COMPLETE,
67 send->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
68 send->dev_type = RXON_DEV_TYPE_P2P;
69 ret = iwl_trans_send_cmd_pdu(trans(priv), ctx->rxon_cmd,
70 CMD_SYNC, sizeof(*send), send);
72 send->filter_flags = old_filter;
73 send->dev_type = old_dev_type;
76 IWL_ERR(priv, "Error disabling PAN (%d)\n", ret);
77 iwlagn_remove_notification(priv, &disable_wait);
79 ret = iwlagn_wait_notification(priv, &disable_wait, HZ);
81 IWL_ERR(priv, "Timed out waiting for PAN disable\n");
87 static int iwlagn_disconn_pan(struct iwl_priv *priv,
88 struct iwl_rxon_context *ctx,
89 struct iwl_rxon_cmd *send)
91 __le32 old_filter = send->filter_flags;
94 send->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
95 ret = iwl_trans_send_cmd_pdu(trans(priv), ctx->rxon_cmd, CMD_SYNC,
98 send->filter_flags = old_filter;
103 static void iwlagn_update_qos(struct iwl_priv *priv,
104 struct iwl_rxon_context *ctx)
111 ctx->qos_data.def_qos_parm.qos_flags = 0;
113 if (ctx->qos_data.qos_active)
114 ctx->qos_data.def_qos_parm.qos_flags |=
115 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
118 ctx->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
120 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
121 ctx->qos_data.qos_active,
122 ctx->qos_data.def_qos_parm.qos_flags);
124 ret = iwl_trans_send_cmd_pdu(trans(priv), ctx->qos_cmd, CMD_SYNC,
125 sizeof(struct iwl_qosparam_cmd),
126 &ctx->qos_data.def_qos_parm);
128 IWL_DEBUG_QUIET_RFKILL(priv, "Failed to update QoS\n");
131 static int iwlagn_update_beacon(struct iwl_priv *priv,
132 struct ieee80211_vif *vif)
134 lockdep_assert_held(&priv->shrd->mutex);
136 dev_kfree_skb(priv->beacon_skb);
137 priv->beacon_skb = ieee80211_beacon_get(priv->hw, vif);
138 if (!priv->beacon_skb)
140 return iwlagn_send_beacon_cmd(priv);
143 static int iwlagn_send_rxon_assoc(struct iwl_priv *priv,
144 struct iwl_rxon_context *ctx)
147 struct iwl_rxon_assoc_cmd rxon_assoc;
148 const struct iwl_rxon_cmd *rxon1 = &ctx->staging;
149 const struct iwl_rxon_cmd *rxon2 = &ctx->active;
151 if ((rxon1->flags == rxon2->flags) &&
152 (rxon1->filter_flags == rxon2->filter_flags) &&
153 (rxon1->cck_basic_rates == rxon2->cck_basic_rates) &&
154 (rxon1->ofdm_ht_single_stream_basic_rates ==
155 rxon2->ofdm_ht_single_stream_basic_rates) &&
156 (rxon1->ofdm_ht_dual_stream_basic_rates ==
157 rxon2->ofdm_ht_dual_stream_basic_rates) &&
158 (rxon1->ofdm_ht_triple_stream_basic_rates ==
159 rxon2->ofdm_ht_triple_stream_basic_rates) &&
160 (rxon1->acquisition_data == rxon2->acquisition_data) &&
161 (rxon1->rx_chain == rxon2->rx_chain) &&
162 (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) {
163 IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC. Not resending.\n");
167 rxon_assoc.flags = ctx->staging.flags;
168 rxon_assoc.filter_flags = ctx->staging.filter_flags;
169 rxon_assoc.ofdm_basic_rates = ctx->staging.ofdm_basic_rates;
170 rxon_assoc.cck_basic_rates = ctx->staging.cck_basic_rates;
171 rxon_assoc.reserved1 = 0;
172 rxon_assoc.reserved2 = 0;
173 rxon_assoc.reserved3 = 0;
174 rxon_assoc.ofdm_ht_single_stream_basic_rates =
175 ctx->staging.ofdm_ht_single_stream_basic_rates;
176 rxon_assoc.ofdm_ht_dual_stream_basic_rates =
177 ctx->staging.ofdm_ht_dual_stream_basic_rates;
178 rxon_assoc.rx_chain_select_flags = ctx->staging.rx_chain;
179 rxon_assoc.ofdm_ht_triple_stream_basic_rates =
180 ctx->staging.ofdm_ht_triple_stream_basic_rates;
181 rxon_assoc.acquisition_data = ctx->staging.acquisition_data;
183 ret = iwl_trans_send_cmd_pdu(trans(priv), ctx->rxon_assoc_cmd,
184 CMD_ASYNC, sizeof(rxon_assoc), &rxon_assoc);
188 static int iwlagn_rxon_disconn(struct iwl_priv *priv,
189 struct iwl_rxon_context *ctx)
192 struct iwl_rxon_cmd *active = (void *)&ctx->active;
194 if (ctx->ctxid == IWL_RXON_CTX_BSS) {
195 ret = iwlagn_disable_bss(priv, ctx, &ctx->staging);
197 ret = iwlagn_disable_pan(priv, ctx, &ctx->staging);
201 ret = iwl_send_rxon_timing(priv, ctx);
203 IWL_ERR(priv, "Failed to send timing (%d)!\n", ret);
206 ret = iwlagn_disconn_pan(priv, ctx, &ctx->staging);
213 * Un-assoc RXON clears the station table and WEP
214 * keys, so we have to restore those afterwards.
216 iwl_clear_ucode_stations(priv, ctx);
217 /* update -- might need P2P now */
218 iwl_update_bcast_station(priv, ctx);
219 iwl_restore_stations(priv, ctx);
220 ret = iwl_restore_default_wep_keys(priv, ctx);
222 IWL_ERR(priv, "Failed to restore WEP keys (%d)\n", ret);
226 memcpy(active, &ctx->staging, sizeof(*active));
230 static int iwlagn_rxon_connect(struct iwl_priv *priv,
231 struct iwl_rxon_context *ctx)
234 struct iwl_rxon_cmd *active = (void *)&ctx->active;
236 /* RXON timing must be before associated RXON */
237 if (ctx->ctxid == IWL_RXON_CTX_BSS) {
238 ret = iwl_send_rxon_timing(priv, ctx);
240 IWL_ERR(priv, "Failed to send timing (%d)!\n", ret);
244 /* QoS info may be cleared by previous un-assoc RXON */
245 iwlagn_update_qos(priv, ctx);
248 * We'll run into this code path when beaconing is
249 * enabled, but then we also need to send the beacon
252 if (ctx->vif && (ctx->vif->type == NL80211_IFTYPE_AP)) {
253 ret = iwlagn_update_beacon(priv, ctx->vif);
256 "Error sending required beacon (%d)!\n",
262 priv->start_calib = 0;
264 * Apply the new configuration.
266 * Associated RXON doesn't clear the station table in uCode,
267 * so we don't need to restore stations etc. after this.
269 ret = iwl_trans_send_cmd_pdu(trans(priv), ctx->rxon_cmd, CMD_SYNC,
270 sizeof(struct iwl_rxon_cmd), &ctx->staging);
272 IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
275 memcpy(active, &ctx->staging, sizeof(*active));
277 iwl_reprogram_ap_sta(priv, ctx);
279 /* IBSS beacon needs to be sent after setting assoc */
280 if (ctx->vif && (ctx->vif->type == NL80211_IFTYPE_ADHOC))
281 if (iwlagn_update_beacon(priv, ctx->vif))
282 IWL_ERR(priv, "Error sending IBSS beacon\n");
283 iwl_init_sensitivity(priv);
286 * If we issue a new RXON command which required a tune then
287 * we must send a new TXPOWER command or we won't be able to
290 * It's expected we set power here if channel is changing.
292 ret = iwl_set_tx_power(priv, priv->tx_power_next, true);
294 IWL_ERR(priv, "Error sending TX power (%d)\n", ret);
298 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION &&
299 priv->cfg->ht_params && priv->cfg->ht_params->smps_mode)
300 ieee80211_request_smps(ctx->vif,
301 priv->cfg->ht_params->smps_mode);
306 int iwlagn_set_pan_params(struct iwl_priv *priv)
308 struct iwl_wipan_params_cmd cmd;
309 struct iwl_rxon_context *ctx_bss, *ctx_pan;
310 int slot0 = 300, slot1 = 0;
313 if (priv->shrd->valid_contexts == BIT(IWL_RXON_CTX_BSS))
316 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
318 lockdep_assert_held(&priv->shrd->mutex);
320 ctx_bss = &priv->contexts[IWL_RXON_CTX_BSS];
321 ctx_pan = &priv->contexts[IWL_RXON_CTX_PAN];
324 * If the PAN context is inactive, then we don't need
325 * to update the PAN parameters, the last thing we'll
326 * have done before it goes inactive is making the PAN
327 * parameters be WLAN-only.
329 if (!ctx_pan->is_active)
332 memset(&cmd, 0, sizeof(cmd));
334 /* only 2 slots are currently allowed */
337 cmd.slots[0].type = 0; /* BSS */
338 cmd.slots[1].type = 1; /* PAN */
340 if (priv->hw_roc_setup) {
341 /* both contexts must be used for this to happen */
342 slot1 = IWL_MIN_SLOT_TIME;
344 } else if (ctx_bss->vif && ctx_pan->vif) {
345 int bcnint = ctx_pan->beacon_int;
346 int dtim = ctx_pan->vif->bss_conf.dtim_period ?: 1;
348 /* should be set, but seems unused?? */
349 cmd.flags |= cpu_to_le16(IWL_WIPAN_PARAMS_FLG_SLOTTED_MODE);
351 if (ctx_pan->vif->type == NL80211_IFTYPE_AP &&
353 bcnint != ctx_bss->beacon_int) {
355 "beacon intervals don't match (%d, %d)\n",
356 ctx_bss->beacon_int, ctx_pan->beacon_int);
358 bcnint = max_t(int, bcnint,
359 ctx_bss->beacon_int);
361 bcnint = DEFAULT_BEACON_INTERVAL;
363 slot1 = bcnint - slot0;
365 if (test_bit(STATUS_SCAN_HW, &priv->shrd->status) ||
366 (!ctx_bss->vif->bss_conf.idle &&
367 !ctx_bss->vif->bss_conf.assoc)) {
368 slot0 = dtim * bcnint * 3 - IWL_MIN_SLOT_TIME;
369 slot1 = IWL_MIN_SLOT_TIME;
370 } else if (!ctx_pan->vif->bss_conf.idle &&
371 !ctx_pan->vif->bss_conf.assoc) {
372 slot1 = dtim * bcnint * 3 - IWL_MIN_SLOT_TIME;
373 slot0 = IWL_MIN_SLOT_TIME;
375 } else if (ctx_pan->vif) {
377 slot1 = max_t(int, 1, ctx_pan->vif->bss_conf.dtim_period) *
379 slot1 = max_t(int, DEFAULT_BEACON_INTERVAL, slot1);
381 if (test_bit(STATUS_SCAN_HW, &priv->shrd->status)) {
382 slot0 = slot1 * 3 - IWL_MIN_SLOT_TIME;
383 slot1 = IWL_MIN_SLOT_TIME;
387 cmd.slots[0].width = cpu_to_le16(slot0);
388 cmd.slots[1].width = cpu_to_le16(slot1);
390 ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_WIPAN_PARAMS, CMD_SYNC,
393 IWL_ERR(priv, "Error setting PAN parameters (%d)\n", ret);
399 * iwlagn_commit_rxon - commit staging_rxon to hardware
401 * The RXON command in staging_rxon is committed to the hardware and
402 * the active_rxon structure is updated with the new data. This
403 * function correctly transitions out of the RXON_ASSOC_MSK state if
404 * a HW tune is required based on the RXON structure changes.
406 * The connect/disconnect flow should be as the following:
408 * 1. make sure send RXON command with association bit unset if not connect
409 * this should include the channel and the band for the candidate
411 * 2. Add Station before RXON association with the AP
412 * 3. RXON_timing has to send before RXON for connection
413 * 4. full RXON command - associated bit set
414 * 5. use RXON_ASSOC command to update any flags changes
416 int iwlagn_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
418 /* cast away the const for active_rxon in this function */
419 struct iwl_rxon_cmd *active = (void *)&ctx->active;
420 bool new_assoc = !!(ctx->staging.filter_flags & RXON_FILTER_ASSOC_MSK);
423 lockdep_assert_held(&priv->shrd->mutex);
425 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
428 if (!iwl_is_alive(priv->shrd))
431 /* This function hardcodes a bunch of dual-mode assumptions */
432 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
437 /* override BSSID if necessary due to preauth */
438 if (ctx->preauth_bssid)
439 memcpy(ctx->staging.bssid_addr, ctx->bssid, ETH_ALEN);
441 /* always get timestamp with Rx frame */
442 ctx->staging.flags |= RXON_FLG_TSF2HOST_MSK;
445 * force CTS-to-self frames protection if RTS-CTS is not preferred
446 * one aggregation protection method
448 if (!(priv->cfg->ht_params &&
449 priv->cfg->ht_params->use_rts_for_aggregation))
450 ctx->staging.flags |= RXON_FLG_SELF_CTS_EN;
452 if ((ctx->vif && ctx->vif->bss_conf.use_short_slot) ||
453 !(ctx->staging.flags & RXON_FLG_BAND_24G_MSK))
454 ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
456 ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
458 iwl_print_rx_config_cmd(priv, ctx->ctxid);
459 ret = iwl_check_rxon_cmd(priv, ctx);
461 IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n");
466 * receive commit_rxon request
467 * abort any previous channel switch if still in process
469 if (test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status) &&
470 (priv->switch_channel != ctx->staging.channel)) {
471 IWL_DEBUG_11H(priv, "abort channel switch on %d\n",
472 le16_to_cpu(priv->switch_channel));
473 iwl_chswitch_done(priv, false);
477 * If we don't need to send a full RXON, we can use
478 * iwl_rxon_assoc_cmd which is used to reconfigure filter
479 * and other flags for the current radio configuration.
481 if (!iwl_full_rxon_required(priv, ctx)) {
482 ret = iwlagn_send_rxon_assoc(priv, ctx);
484 IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret);
488 memcpy(active, &ctx->staging, sizeof(*active));
490 * We do not commit tx power settings while channel changing,
491 * do it now if after settings changed.
493 iwl_set_tx_power(priv, priv->tx_power_next, false);
495 /* make sure we are in the right PS state */
496 iwl_power_update_mode(priv, true);
501 iwl_set_rxon_hwcrypto(priv, ctx, !iwlagn_mod_params.sw_crypto);
504 "Going to commit RXON\n"
505 " * with%s RXON_FILTER_ASSOC_MSK\n"
508 (new_assoc ? "" : "out"),
509 le16_to_cpu(ctx->staging.channel),
510 ctx->staging.bssid_addr);
513 * Always clear associated first, but with the correct config.
514 * This is required as for example station addition for the
515 * AP station must be done after the BSSID is set to correctly
516 * set up filters in the device.
518 ret = iwlagn_rxon_disconn(priv, ctx);
522 ret = iwlagn_set_pan_params(priv);
527 return iwlagn_rxon_connect(priv, ctx);
532 int iwlagn_mac_config(struct ieee80211_hw *hw, u32 changed)
534 struct iwl_priv *priv = hw->priv;
535 struct iwl_rxon_context *ctx;
536 struct ieee80211_conf *conf = &hw->conf;
537 struct ieee80211_channel *channel = conf->channel;
538 const struct iwl_channel_info *ch_info;
541 IWL_DEBUG_MAC80211(priv, "enter: changed %#x", changed);
543 mutex_lock(&priv->shrd->mutex);
545 if (unlikely(test_bit(STATUS_SCANNING, &priv->shrd->status))) {
546 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
550 if (!iwl_is_ready(priv->shrd)) {
551 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
555 if (changed & (IEEE80211_CONF_CHANGE_SMPS |
556 IEEE80211_CONF_CHANGE_CHANNEL)) {
557 /* mac80211 uses static for non-HT which is what we want */
558 priv->current_ht_config.smps = conf->smps_mode;
561 * Recalculate chain counts.
563 * If monitor mode is enabled then mac80211 will
564 * set up the SM PS mode to OFF if an HT channel is
567 for_each_context(priv, ctx)
568 iwlagn_set_rxon_chain(priv, ctx);
571 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
574 ch_info = iwl_get_channel_info(priv, channel->band,
576 if (!is_channel_valid(ch_info)) {
577 IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
582 spin_lock_irqsave(&priv->shrd->lock, flags);
584 for_each_context(priv, ctx) {
585 /* Configure HT40 channels */
586 if (ctx->ht.enabled != conf_is_ht(conf))
587 ctx->ht.enabled = conf_is_ht(conf);
589 if (ctx->ht.enabled) {
590 if (conf_is_ht40_minus(conf)) {
591 ctx->ht.extension_chan_offset =
592 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
593 ctx->ht.is_40mhz = true;
594 } else if (conf_is_ht40_plus(conf)) {
595 ctx->ht.extension_chan_offset =
596 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
597 ctx->ht.is_40mhz = true;
599 ctx->ht.extension_chan_offset =
600 IEEE80211_HT_PARAM_CHA_SEC_NONE;
601 ctx->ht.is_40mhz = false;
604 ctx->ht.is_40mhz = false;
607 * Default to no protection. Protection mode will
608 * later be set from BSS config in iwl_ht_conf
610 ctx->ht.protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
612 /* if we are switching from ht to 2.4 clear flags
613 * from any ht related info since 2.4 does not
615 if (le16_to_cpu(ctx->staging.channel) !=
617 ctx->staging.flags = 0;
619 iwl_set_rxon_channel(priv, channel, ctx);
620 iwl_set_rxon_ht(priv, &priv->current_ht_config);
622 iwl_set_flags_for_band(priv, ctx, channel->band,
626 spin_unlock_irqrestore(&priv->shrd->lock, flags);
628 iwl_update_bcast_stations(priv);
631 * The list of supported rates and rate mask can be different
632 * for each band; since the band may have changed, reset
633 * the rate mask to what mac80211 lists.
638 if (changed & (IEEE80211_CONF_CHANGE_PS |
639 IEEE80211_CONF_CHANGE_IDLE)) {
640 ret = iwl_power_update_mode(priv, false);
642 IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n");
645 if (changed & IEEE80211_CONF_CHANGE_POWER) {
646 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
647 priv->tx_power_user_lmt, conf->power_level);
649 iwl_set_tx_power(priv, conf->power_level, false);
652 for_each_context(priv, ctx) {
653 if (!memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging)))
655 iwlagn_commit_rxon(priv, ctx);
658 mutex_unlock(&priv->shrd->mutex);
659 IWL_DEBUG_MAC80211(priv, "leave\n");
664 static void iwlagn_check_needed_chains(struct iwl_priv *priv,
665 struct iwl_rxon_context *ctx,
666 struct ieee80211_bss_conf *bss_conf)
668 struct ieee80211_vif *vif = ctx->vif;
669 struct iwl_rxon_context *tmp;
670 struct ieee80211_sta *sta;
671 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
672 struct ieee80211_sta_ht_cap *ht_cap;
675 lockdep_assert_held(&priv->shrd->mutex);
678 case NL80211_IFTYPE_STATION:
680 sta = ieee80211_find_sta(vif, bss_conf->bssid);
683 * If at all, this can only happen through a race
684 * when the AP disconnects us while we're still
685 * setting up the connection, in that case mac80211
686 * will soon tell us about that.
688 need_multiple = false;
693 ht_cap = &sta->ht_cap;
695 need_multiple = true;
698 * If the peer advertises no support for receiving 2 and 3
699 * stream MCS rates, it can't be transmitting them either.
701 if (ht_cap->mcs.rx_mask[1] == 0 &&
702 ht_cap->mcs.rx_mask[2] == 0) {
703 need_multiple = false;
704 } else if (!(ht_cap->mcs.tx_params &
705 IEEE80211_HT_MCS_TX_DEFINED)) {
706 /* If it can't TX MCS at all ... */
707 need_multiple = false;
708 } else if (ht_cap->mcs.tx_params &
709 IEEE80211_HT_MCS_TX_RX_DIFF) {
713 * But if it can receive them, it might still not
714 * be able to transmit them, which is what we need
715 * to check here -- so check the number of streams
716 * it advertises for TX (if different from RX).
719 maxstreams = (ht_cap->mcs.tx_params &
720 IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK);
722 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
726 need_multiple = false;
731 case NL80211_IFTYPE_ADHOC:
733 need_multiple = false;
737 need_multiple = true;
741 ctx->ht_need_multiple_chains = need_multiple;
743 if (!need_multiple) {
744 /* check all contexts */
745 for_each_context(priv, tmp) {
748 if (tmp->ht_need_multiple_chains) {
749 need_multiple = true;
755 ht_conf->single_chain_sufficient = !need_multiple;
758 static void iwlagn_chain_noise_reset(struct iwl_priv *priv)
760 struct iwl_chain_noise_data *data = &priv->chain_noise_data;
763 if ((data->state == IWL_CHAIN_NOISE_ALIVE) &&
764 iwl_is_any_associated(priv)) {
765 struct iwl_calib_chain_noise_reset_cmd cmd;
767 /* clear data for chain noise calibration algorithm */
768 data->chain_noise_a = 0;
769 data->chain_noise_b = 0;
770 data->chain_noise_c = 0;
771 data->chain_signal_a = 0;
772 data->chain_signal_b = 0;
773 data->chain_signal_c = 0;
774 data->beacon_count = 0;
776 memset(&cmd, 0, sizeof(cmd));
777 iwl_set_calib_hdr(&cmd.hdr,
778 priv->phy_calib_chain_noise_reset_cmd);
779 ret = iwl_trans_send_cmd_pdu(trans(priv),
780 REPLY_PHY_CALIBRATION_CMD,
781 CMD_SYNC, sizeof(cmd), &cmd);
784 "Could not send REPLY_PHY_CALIBRATION_CMD\n");
785 data->state = IWL_CHAIN_NOISE_ACCUMULATE;
786 IWL_DEBUG_CALIB(priv, "Run chain_noise_calibrate\n");
790 void iwlagn_bss_info_changed(struct ieee80211_hw *hw,
791 struct ieee80211_vif *vif,
792 struct ieee80211_bss_conf *bss_conf,
795 struct iwl_priv *priv = hw->priv;
796 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
800 mutex_lock(&priv->shrd->mutex);
802 if (unlikely(!iwl_is_ready(priv->shrd))) {
803 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
804 mutex_unlock(&priv->shrd->mutex);
808 if (unlikely(!ctx->vif)) {
809 IWL_DEBUG_MAC80211(priv, "leave - vif is NULL\n");
810 mutex_unlock(&priv->shrd->mutex);
814 if (changes & BSS_CHANGED_BEACON_INT)
817 if (changes & BSS_CHANGED_QOS) {
818 ctx->qos_data.qos_active = bss_conf->qos;
819 iwlagn_update_qos(priv, ctx);
822 ctx->staging.assoc_id = cpu_to_le16(vif->bss_conf.aid);
823 if (vif->bss_conf.use_short_preamble)
824 ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
826 ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
828 if (changes & BSS_CHANGED_ASSOC) {
829 if (bss_conf->assoc) {
830 priv->timestamp = bss_conf->timestamp;
831 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
834 * If we disassociate while there are pending
835 * frames, just wake up the queues and let the
836 * frames "escape" ... This shouldn't really
837 * be happening to start with, but we should
838 * not get stuck in this case either since it
839 * can happen if userspace gets confused.
841 if (ctx->last_tx_rejected) {
842 ctx->last_tx_rejected = false;
843 iwl_trans_wake_any_queue(trans(priv),
846 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
848 if (ctx->ctxid == IWL_RXON_CTX_BSS)
849 priv->have_rekey_data = false;
852 iwlagn_bt_coex_rssi_monitor(priv);
855 if (ctx->ht.enabled) {
856 ctx->ht.protection = bss_conf->ht_operation_mode &
857 IEEE80211_HT_OP_MODE_PROTECTION;
858 ctx->ht.non_gf_sta_present = !!(bss_conf->ht_operation_mode &
859 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
860 iwlagn_check_needed_chains(priv, ctx, bss_conf);
861 iwl_set_rxon_ht(priv, &priv->current_ht_config);
864 iwlagn_set_rxon_chain(priv, ctx);
866 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
867 ctx->staging.flags |= RXON_FLG_TGG_PROTECT_MSK;
869 ctx->staging.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
871 if (bss_conf->use_cts_prot)
872 ctx->staging.flags |= RXON_FLG_SELF_CTS_EN;
874 ctx->staging.flags &= ~RXON_FLG_SELF_CTS_EN;
876 memcpy(ctx->staging.bssid_addr, bss_conf->bssid, ETH_ALEN);
878 if (vif->type == NL80211_IFTYPE_AP ||
879 vif->type == NL80211_IFTYPE_ADHOC) {
880 if (vif->bss_conf.enable_beacon) {
881 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
882 priv->beacon_ctx = ctx;
884 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
885 priv->beacon_ctx = NULL;
889 if (force || memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging)))
890 iwlagn_commit_rxon(priv, ctx);
892 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) {
894 * The chain noise calibration will enable PM upon
895 * completion. If calibration has already been run
896 * then we need to enable power management here.
898 if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
899 iwl_power_update_mode(priv, false);
901 /* Enable RX differential gain and sensitivity calibrations */
902 if (!priv->disable_chain_noise_cal)
903 iwlagn_chain_noise_reset(priv);
904 priv->start_calib = 1;
905 WARN_ON(ctx->preauth_bssid);
908 if (changes & BSS_CHANGED_IBSS) {
909 ret = iwlagn_manage_ibss_station(priv, vif,
910 bss_conf->ibss_joined);
912 IWL_ERR(priv, "failed to %s IBSS station %pM\n",
913 bss_conf->ibss_joined ? "add" : "remove",
917 if (changes & BSS_CHANGED_BEACON && vif->type == NL80211_IFTYPE_ADHOC &&
919 if (iwlagn_update_beacon(priv, vif))
920 IWL_ERR(priv, "Error sending IBSS beacon\n");
923 mutex_unlock(&priv->shrd->mutex);
926 void iwlagn_post_scan(struct iwl_priv *priv)
928 struct iwl_rxon_context *ctx;
931 * We do not commit power settings while scan is pending,
932 * do it now if the settings changed.
934 iwl_power_set_mode(priv, &priv->power_data.sleep_cmd_next, false);
935 iwl_set_tx_power(priv, priv->tx_power_next, false);
938 * Since setting the RXON may have been deferred while
939 * performing the scan, fire one off if needed
941 for_each_context(priv, ctx)
942 if (memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging)))
943 iwlagn_commit_rxon(priv, ctx);
945 iwlagn_set_pan_params(priv);