/****************************************************************************** * * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved. * * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along with * this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA * * The full GNU General Public License is included in this distribution in the * file called LICENSE. * * Contact Information: * Intel Linux Wireless * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * *****************************************************************************/ #include #include "iwl-trans.h" #include "iwl-modparams.h" #include "dev.h" #include "agn.h" #include "calib.h" /* * initialize rxon structure with default values from eeprom */ void iwl_connection_init_rx_config(struct iwl_priv *priv, struct iwl_rxon_context *ctx) { memset(&ctx->staging, 0, sizeof(ctx->staging)); if (!ctx->vif) { ctx->staging.dev_type = ctx->unused_devtype; } else switch (ctx->vif->type) { case NL80211_IFTYPE_AP: ctx->staging.dev_type = ctx->ap_devtype; break; case NL80211_IFTYPE_STATION: ctx->staging.dev_type = ctx->station_devtype; ctx->staging.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK; break; case NL80211_IFTYPE_ADHOC: ctx->staging.dev_type = ctx->ibss_devtype; ctx->staging.flags = RXON_FLG_SHORT_PREAMBLE_MSK; ctx->staging.filter_flags = RXON_FILTER_BCON_AWARE_MSK | RXON_FILTER_ACCEPT_GRP_MSK; break; case NL80211_IFTYPE_MONITOR: ctx->staging.dev_type = RXON_DEV_TYPE_SNIFFER; break; default: IWL_ERR(priv, "Unsupported interface type %d\n", ctx->vif->type); break; } #if 0 /* TODO: Figure out when short_preamble would be set and cache from * that */ if (!hw_to_local(priv->hw)->short_preamble) ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; else ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; #endif ctx->staging.channel = cpu_to_le16(priv->hw->conf.channel->hw_value); priv->band = priv->hw->conf.channel->band; iwl_set_flags_for_band(priv, ctx, priv->band, ctx->vif); /* clear both MIX and PURE40 mode flag */ ctx->staging.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED | RXON_FLG_CHANNEL_MODE_PURE_40); if (ctx->vif) memcpy(ctx->staging.node_addr, ctx->vif->addr, ETH_ALEN); ctx->staging.ofdm_ht_single_stream_basic_rates = 0xff; ctx->staging.ofdm_ht_dual_stream_basic_rates = 0xff; ctx->staging.ofdm_ht_triple_stream_basic_rates = 0xff; } static int iwlagn_disable_bss(struct iwl_priv *priv, struct iwl_rxon_context *ctx, struct iwl_rxon_cmd *send) { __le32 old_filter = send->filter_flags; int ret; send->filter_flags &= ~RXON_FILTER_ASSOC_MSK; ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_cmd, CMD_SYNC, sizeof(*send), send); send->filter_flags = old_filter; if (ret) IWL_DEBUG_QUIET_RFKILL(priv, "Error clearing ASSOC_MSK on BSS (%d)\n", ret); return ret; } static int iwlagn_disable_pan(struct iwl_priv *priv, struct iwl_rxon_context *ctx, struct iwl_rxon_cmd *send) { struct iwl_notification_wait disable_wait; __le32 old_filter = send->filter_flags; u8 old_dev_type = send->dev_type; int ret; static const u8 deactivate_cmd[] = { REPLY_WIPAN_DEACTIVATION_COMPLETE }; iwl_init_notification_wait(&priv->notif_wait, &disable_wait, deactivate_cmd, ARRAY_SIZE(deactivate_cmd), NULL, NULL); send->filter_flags &= ~RXON_FILTER_ASSOC_MSK; send->dev_type = RXON_DEV_TYPE_P2P; ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_cmd, CMD_SYNC, sizeof(*send), send); send->filter_flags = old_filter; send->dev_type = old_dev_type; if (ret) { IWL_ERR(priv, "Error disabling PAN (%d)\n", ret); iwl_remove_notification(&priv->notif_wait, &disable_wait); } else { ret = iwl_wait_notification(&priv->notif_wait, &disable_wait, HZ); if (ret) IWL_ERR(priv, "Timed out waiting for PAN disable\n"); } return ret; } static int iwlagn_disconn_pan(struct iwl_priv *priv, struct iwl_rxon_context *ctx, struct iwl_rxon_cmd *send) { __le32 old_filter = send->filter_flags; int ret; send->filter_flags &= ~RXON_FILTER_ASSOC_MSK; ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_cmd, CMD_SYNC, sizeof(*send), send); send->filter_flags = old_filter; return ret; } static void iwlagn_update_qos(struct iwl_priv *priv, struct iwl_rxon_context *ctx) { int ret; if (!ctx->is_active) return; ctx->qos_data.def_qos_parm.qos_flags = 0; if (ctx->qos_data.qos_active) ctx->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_UPDATE_EDCA_MSK; if (ctx->ht.enabled) ctx->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK; IWL_DEBUG_INFO(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n", ctx->qos_data.qos_active, ctx->qos_data.def_qos_parm.qos_flags); ret = iwl_dvm_send_cmd_pdu(priv, ctx->qos_cmd, CMD_SYNC, sizeof(struct iwl_qosparam_cmd), &ctx->qos_data.def_qos_parm); if (ret) IWL_DEBUG_QUIET_RFKILL(priv, "Failed to update QoS\n"); } static int iwlagn_update_beacon(struct iwl_priv *priv, struct ieee80211_vif *vif) { lockdep_assert_held(&priv->mutex); dev_kfree_skb(priv->beacon_skb); priv->beacon_skb = ieee80211_beacon_get(priv->hw, vif); if (!priv->beacon_skb) return -ENOMEM; return iwlagn_send_beacon_cmd(priv); } static int iwlagn_send_rxon_assoc(struct iwl_priv *priv, struct iwl_rxon_context *ctx) { int ret = 0; struct iwl_rxon_assoc_cmd rxon_assoc; const struct iwl_rxon_cmd *rxon1 = &ctx->staging; const struct iwl_rxon_cmd *rxon2 = &ctx->active; if ((rxon1->flags == rxon2->flags) && (rxon1->filter_flags == rxon2->filter_flags) && (rxon1->cck_basic_rates == rxon2->cck_basic_rates) && (rxon1->ofdm_ht_single_stream_basic_rates == rxon2->ofdm_ht_single_stream_basic_rates) && (rxon1->ofdm_ht_dual_stream_basic_rates == rxon2->ofdm_ht_dual_stream_basic_rates) && (rxon1->ofdm_ht_triple_stream_basic_rates == rxon2->ofdm_ht_triple_stream_basic_rates) && (rxon1->acquisition_data == rxon2->acquisition_data) && (rxon1->rx_chain == rxon2->rx_chain) && (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) { IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC. Not resending.\n"); return 0; } rxon_assoc.flags = ctx->staging.flags; rxon_assoc.filter_flags = ctx->staging.filter_flags; rxon_assoc.ofdm_basic_rates = ctx->staging.ofdm_basic_rates; rxon_assoc.cck_basic_rates = ctx->staging.cck_basic_rates; rxon_assoc.reserved1 = 0; rxon_assoc.reserved2 = 0; rxon_assoc.reserved3 = 0; rxon_assoc.ofdm_ht_single_stream_basic_rates = ctx->staging.ofdm_ht_single_stream_basic_rates; rxon_assoc.ofdm_ht_dual_stream_basic_rates = ctx->staging.ofdm_ht_dual_stream_basic_rates; rxon_assoc.rx_chain_select_flags = ctx->staging.rx_chain; rxon_assoc.ofdm_ht_triple_stream_basic_rates = ctx->staging.ofdm_ht_triple_stream_basic_rates; rxon_assoc.acquisition_data = ctx->staging.acquisition_data; ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_assoc_cmd, CMD_ASYNC, sizeof(rxon_assoc), &rxon_assoc); return ret; } static u16 iwl_adjust_beacon_interval(u16 beacon_val, u16 max_beacon_val) { u16 new_val; u16 beacon_factor; /* * If mac80211 hasn't given us a beacon interval, program * the default into the device (not checking this here * would cause the adjustment below to return the maximum * value, which may break PAN.) */ if (!beacon_val) return DEFAULT_BEACON_INTERVAL; /* * If the beacon interval we obtained from the peer * is too large, we'll have to wake up more often * (and in IBSS case, we'll beacon too much) * * For example, if max_beacon_val is 4096, and the * requested beacon interval is 7000, we'll have to * use 3500 to be able to wake up on the beacons. * * This could badly influence beacon detection stats. */ beacon_factor = (beacon_val + max_beacon_val) / max_beacon_val; new_val = beacon_val / beacon_factor; if (!new_val) new_val = max_beacon_val; return new_val; } static int iwl_send_rxon_timing(struct iwl_priv *priv, struct iwl_rxon_context *ctx) { u64 tsf; s32 interval_tm, rem; struct ieee80211_conf *conf = NULL; u16 beacon_int; struct ieee80211_vif *vif = ctx->vif; conf = &priv->hw->conf; lockdep_assert_held(&priv->mutex); memset(&ctx->timing, 0, sizeof(struct iwl_rxon_time_cmd)); ctx->timing.timestamp = cpu_to_le64(priv->timestamp); ctx->timing.listen_interval = cpu_to_le16(conf->listen_interval); beacon_int = vif ? vif->bss_conf.beacon_int : 0; /* * TODO: For IBSS we need to get atim_window from mac80211, * for now just always use 0 */ ctx->timing.atim_window = 0; if (ctx->ctxid == IWL_RXON_CTX_PAN && (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION) && iwl_is_associated(priv, IWL_RXON_CTX_BSS) && priv->contexts[IWL_RXON_CTX_BSS].vif && priv->contexts[IWL_RXON_CTX_BSS].vif->bss_conf.beacon_int) { ctx->timing.beacon_interval = priv->contexts[IWL_RXON_CTX_BSS].timing.beacon_interval; beacon_int = le16_to_cpu(ctx->timing.beacon_interval); } else if (ctx->ctxid == IWL_RXON_CTX_BSS && iwl_is_associated(priv, IWL_RXON_CTX_PAN) && priv->contexts[IWL_RXON_CTX_PAN].vif && priv->contexts[IWL_RXON_CTX_PAN].vif->bss_conf.beacon_int && (!iwl_is_associated_ctx(ctx) || !ctx->vif || !ctx->vif->bss_conf.beacon_int)) { ctx->timing.beacon_interval = priv->contexts[IWL_RXON_CTX_PAN].timing.beacon_interval; beacon_int = le16_to_cpu(ctx->timing.beacon_interval); } else { beacon_int = iwl_adjust_beacon_interval(beacon_int, IWL_MAX_UCODE_BEACON_INTERVAL * TIME_UNIT); ctx->timing.beacon_interval = cpu_to_le16(beacon_int); } ctx->beacon_int = beacon_int; tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */ interval_tm = beacon_int * TIME_UNIT; rem = do_div(tsf, interval_tm); ctx->timing.beacon_init_val = cpu_to_le32(interval_tm - rem); ctx->timing.dtim_period = vif ? (vif->bss_conf.dtim_period ?: 1) : 1; IWL_DEBUG_ASSOC(priv, "beacon interval %d beacon timer %d beacon tim %d\n", le16_to_cpu(ctx->timing.beacon_interval), le32_to_cpu(ctx->timing.beacon_init_val), le16_to_cpu(ctx->timing.atim_window)); return iwl_dvm_send_cmd_pdu(priv, ctx->rxon_timing_cmd, CMD_SYNC, sizeof(ctx->timing), &ctx->timing); } static int iwlagn_rxon_disconn(struct iwl_priv *priv, struct iwl_rxon_context *ctx) { int ret; struct iwl_rxon_cmd *active = (void *)&ctx->active; if (ctx->ctxid == IWL_RXON_CTX_BSS) { ret = iwlagn_disable_bss(priv, ctx, &ctx->staging); } else { ret = iwlagn_disable_pan(priv, ctx, &ctx->staging); if (ret) return ret; if (ctx->vif) { ret = iwl_send_rxon_timing(priv, ctx); if (ret) { IWL_ERR(priv, "Failed to send timing (%d)!\n", ret); return ret; } ret = iwlagn_disconn_pan(priv, ctx, &ctx->staging); } } if (ret) return ret; /* * Un-assoc RXON clears the station table and WEP * keys, so we have to restore those afterwards. */ iwl_clear_ucode_stations(priv, ctx); /* update -- might need P2P now */ iwl_update_bcast_station(priv, ctx); iwl_restore_stations(priv, ctx); ret = iwl_restore_default_wep_keys(priv, ctx); if (ret) { IWL_ERR(priv, "Failed to restore WEP keys (%d)\n", ret); return ret; } memcpy(active, &ctx->staging, sizeof(*active)); return 0; } static int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force) { int ret; s8 prev_tx_power; bool defer; struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; if (priv->calib_disabled & IWL_TX_POWER_CALIB_DISABLED) return 0; lockdep_assert_held(&priv->mutex); if (priv->tx_power_user_lmt == tx_power && !force) return 0; if (tx_power < IWLAGN_TX_POWER_TARGET_POWER_MIN) { IWL_WARN(priv, "Requested user TXPOWER %d below lower limit %d.\n", tx_power, IWLAGN_TX_POWER_TARGET_POWER_MIN); return -EINVAL; } if (tx_power > DIV_ROUND_UP(priv->eeprom_data->max_tx_pwr_half_dbm, 2)) { IWL_WARN(priv, "Requested user TXPOWER %d above upper limit %d.\n", tx_power, priv->eeprom_data->max_tx_pwr_half_dbm); return -EINVAL; } if (!iwl_is_ready_rf(priv)) return -EIO; /* scan complete and commit_rxon use tx_power_next value, * it always need to be updated for newest request */ priv->tx_power_next = tx_power; /* do not set tx power when scanning or channel changing */ defer = test_bit(STATUS_SCANNING, &priv->status) || memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging)); if (defer && !force) { IWL_DEBUG_INFO(priv, "Deferring tx power set\n"); return 0; } prev_tx_power = priv->tx_power_user_lmt; priv->tx_power_user_lmt = tx_power; ret = iwlagn_send_tx_power(priv); /* if fail to set tx_power, restore the orig. tx power */ if (ret) { priv->tx_power_user_lmt = prev_tx_power; priv->tx_power_next = prev_tx_power; } return ret; } static int iwlagn_rxon_connect(struct iwl_priv *priv, struct iwl_rxon_context *ctx) { int ret; struct iwl_rxon_cmd *active = (void *)&ctx->active; /* RXON timing must be before associated RXON */ if (ctx->ctxid == IWL_RXON_CTX_BSS) { ret = iwl_send_rxon_timing(priv, ctx); if (ret) { IWL_ERR(priv, "Failed to send timing (%d)!\n", ret); return ret; } } /* QoS info may be cleared by previous un-assoc RXON */ iwlagn_update_qos(priv, ctx); /* * We'll run into this code path when beaconing is * enabled, but then we also need to send the beacon * to the device. */ if (ctx->vif && (ctx->vif->type == NL80211_IFTYPE_AP)) { ret = iwlagn_update_beacon(priv, ctx->vif); if (ret) { IWL_ERR(priv, "Error sending required beacon (%d)!\n", ret); return ret; } } priv->start_calib = 0; /* * Apply the new configuration. * * Associated RXON doesn't clear the station table in uCode, * so we don't need to restore stations etc. after this. */ ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_cmd, CMD_SYNC, sizeof(struct iwl_rxon_cmd), &ctx->staging); if (ret) { IWL_ERR(priv, "Error setting new RXON (%d)\n", ret); return ret; } memcpy(active, &ctx->staging, sizeof(*active)); /* IBSS beacon needs to be sent after setting assoc */ if (ctx->vif && (ctx->vif->type == NL80211_IFTYPE_ADHOC)) if (iwlagn_update_beacon(priv, ctx->vif)) IWL_ERR(priv, "Error sending IBSS beacon\n"); iwl_init_sensitivity(priv); /* * If we issue a new RXON command which required a tune then * we must send a new TXPOWER command or we won't be able to * Tx any frames. * * It's expected we set power here if channel is changing. */ ret = iwl_set_tx_power(priv, priv->tx_power_next, true); if (ret) { IWL_ERR(priv, "Error sending TX power (%d)\n", ret); return ret; } if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION && priv->cfg->ht_params && priv->cfg->ht_params->smps_mode) ieee80211_request_smps(ctx->vif, priv->cfg->ht_params->smps_mode); return 0; } int iwlagn_set_pan_params(struct iwl_priv *priv) { struct iwl_wipan_params_cmd cmd; struct iwl_rxon_context *ctx_bss, *ctx_pan; int slot0 = 300, slot1 = 0; int ret; if (priv->valid_contexts == BIT(IWL_RXON_CTX_BSS)) return 0; BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2); lockdep_assert_held(&priv->mutex); ctx_bss = &priv->contexts[IWL_RXON_CTX_BSS]; ctx_pan = &priv->contexts[IWL_RXON_CTX_PAN]; /* * If the PAN context is inactive, then we don't need * to update the PAN parameters, the last thing we'll * have done before it goes inactive is making the PAN * parameters be WLAN-only. */ if (!ctx_pan->is_active) return 0; memset(&cmd, 0, sizeof(cmd)); /* only 2 slots are currently allowed */ cmd.num_slots = 2; cmd.slots[0].type = 0; /* BSS */ cmd.slots[1].type = 1; /* PAN */ if (priv->hw_roc_setup) { /* both contexts must be used for this to happen */ slot1 = IWL_MIN_SLOT_TIME; slot0 = 3000; } else if (ctx_bss->vif && ctx_pan->vif) { int bcnint = ctx_pan->beacon_int; int dtim = ctx_pan->vif->bss_conf.dtim_period ?: 1; /* should be set, but seems unused?? */ cmd.flags |= cpu_to_le16(IWL_WIPAN_PARAMS_FLG_SLOTTED_MODE); if (ctx_pan->vif->type == NL80211_IFTYPE_AP && bcnint && bcnint != ctx_bss->beacon_int) { IWL_ERR(priv, "beacon intervals don't match (%d, %d)\n", ctx_bss->beacon_int, ctx_pan->beacon_int); } else bcnint = max_t(int, bcnint, ctx_bss->beacon_int); if (!bcnint) bcnint = DEFAULT_BEACON_INTERVAL; slot0 = bcnint / 2; slot1 = bcnint - slot0; if (test_bit(STATUS_SCAN_HW, &priv->status) || (!ctx_bss->vif->bss_conf.idle && !ctx_bss->vif->bss_conf.assoc)) { slot0 = dtim * bcnint * 3 - IWL_MIN_SLOT_TIME; slot1 = IWL_MIN_SLOT_TIME; } else if (!ctx_pan->vif->bss_conf.idle && !ctx_pan->vif->bss_conf.assoc) { slot1 = dtim * bcnint * 3 - IWL_MIN_SLOT_TIME; slot0 = IWL_MIN_SLOT_TIME; } } else if (ctx_pan->vif) { slot0 = 0; slot1 = max_t(int, 1, ctx_pan->vif->bss_conf.dtim_period) * ctx_pan->beacon_int; slot1 = max_t(int, DEFAULT_BEACON_INTERVAL, slot1); if (test_bit(STATUS_SCAN_HW, &priv->status)) { slot0 = slot1 * 3 - IWL_MIN_SLOT_TIME; slot1 = IWL_MIN_SLOT_TIME; } } cmd.slots[0].width = cpu_to_le16(slot0); cmd.slots[1].width = cpu_to_le16(slot1); ret = iwl_dvm_send_cmd_pdu(priv, REPLY_WIPAN_PARAMS, CMD_SYNC, sizeof(cmd), &cmd); if (ret) IWL_ERR(priv, "Error setting PAN parameters (%d)\n", ret); return ret; } static void _iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf, struct iwl_rxon_context *ctx) { struct iwl_rxon_cmd *rxon = &ctx->staging; if (!ctx->ht.enabled) { rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK | RXON_FLG_HT40_PROT_MSK | RXON_FLG_HT_PROT_MSK); return; } /* FIXME: if the definition of ht.protection changed, the "translation" * will be needed for rxon->flags */ rxon->flags |= cpu_to_le32(ctx->ht.protection << RXON_FLG_HT_OPERATING_MODE_POS); /* Set up channel bandwidth: * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */ /* clear the HT channel mode before set the mode */ rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); if (iwl_is_ht40_tx_allowed(priv, ctx, NULL)) { /* pure ht40 */ if (ctx->ht.protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) { rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40; /* * Note: control channel is opposite of extension * channel */ switch (ctx->ht.extension_chan_offset) { case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; break; case IEEE80211_HT_PARAM_CHA_SEC_BELOW: rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; break; } } else { /* * Note: control channel is opposite of extension * channel */ switch (ctx->ht.extension_chan_offset) { case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED; break; case IEEE80211_HT_PARAM_CHA_SEC_BELOW: rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED; break; case IEEE80211_HT_PARAM_CHA_SEC_NONE: default: /* * channel location only valid if in Mixed * mode */ IWL_ERR(priv, "invalid extension channel offset\n"); break; } } } else { rxon->flags |= RXON_FLG_CHANNEL_MODE_LEGACY; } iwlagn_set_rxon_chain(priv, ctx); IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X " "extension channel offset 0x%x\n", le32_to_cpu(rxon->flags), ctx->ht.protection, ctx->ht.extension_chan_offset); } void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf) { struct iwl_rxon_context *ctx; for_each_context(priv, ctx) _iwl_set_rxon_ht(priv, ht_conf, ctx); } /** * iwl_set_rxon_channel - Set the band and channel values in staging RXON * @ch: requested channel as a pointer to struct ieee80211_channel * NOTE: Does not commit to the hardware; it sets appropriate bit fields * in the staging RXON flag structure based on the ch->band */ void iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch, struct iwl_rxon_context *ctx) { enum ieee80211_band band = ch->band; u16 channel = ch->hw_value; if ((le16_to_cpu(ctx->staging.channel) == channel) && (priv->band == band)) return; ctx->staging.channel = cpu_to_le16(channel); if (band == IEEE80211_BAND_5GHZ) ctx->staging.flags &= ~RXON_FLG_BAND_24G_MSK; else ctx->staging.flags |= RXON_FLG_BAND_24G_MSK; priv->band = band; IWL_DEBUG_INFO(priv, "Staging channel set to %d [%d]\n", channel, band); } void iwl_set_flags_for_band(struct iwl_priv *priv, struct iwl_rxon_context *ctx, enum ieee80211_band band, struct ieee80211_vif *vif) { if (band == IEEE80211_BAND_5GHZ) { ctx->staging.flags &= ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_CCK_MSK); ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; } else { /* Copied from iwl_post_associate() */ if (vif && vif->bss_conf.use_short_slot) ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; else ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; ctx->staging.flags |= RXON_FLG_BAND_24G_MSK; ctx->staging.flags |= RXON_FLG_AUTO_DETECT_MSK; ctx->staging.flags &= ~RXON_FLG_CCK_MSK; } } static void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, struct iwl_rxon_context *ctx, int hw_decrypt) { struct iwl_rxon_cmd *rxon = &ctx->staging; if (hw_decrypt) rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK; else rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK; } /* validate RXON structure is valid */ static int iwl_check_rxon_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx) { struct iwl_rxon_cmd *rxon = &ctx->staging; u32 errors = 0; if (rxon->flags & RXON_FLG_BAND_24G_MSK) { if (rxon->flags & RXON_FLG_TGJ_NARROW_BAND_MSK) { IWL_WARN(priv, "check 2.4G: wrong narrow\n"); errors |= BIT(0); } if (rxon->flags & RXON_FLG_RADAR_DETECT_MSK) { IWL_WARN(priv, "check 2.4G: wrong radar\n"); errors |= BIT(1); } } else { if (!(rxon->flags & RXON_FLG_SHORT_SLOT_MSK)) { IWL_WARN(priv, "check 5.2G: not short slot!\n"); errors |= BIT(2); } if (rxon->flags & RXON_FLG_CCK_MSK) { IWL_WARN(priv, "check 5.2G: CCK!\n"); errors |= BIT(3); } } if ((rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1) { IWL_WARN(priv, "mac/bssid mcast!\n"); errors |= BIT(4); } /* make sure basic rates 6Mbps and 1Mbps are supported */ if ((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0 && (rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0) { IWL_WARN(priv, "neither 1 nor 6 are basic\n"); errors |= BIT(5); } if (le16_to_cpu(rxon->assoc_id) > 2007) { IWL_WARN(priv, "aid > 2007\n"); errors |= BIT(6); } if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK)) { IWL_WARN(priv, "CCK and short slot\n"); errors |= BIT(7); } if ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK)) { IWL_WARN(priv, "CCK and auto detect"); errors |= BIT(8); } if ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK) { IWL_WARN(priv, "TGg but no auto-detect\n"); errors |= BIT(9); } if (rxon->channel == 0) { IWL_WARN(priv, "zero channel is invalid\n"); errors |= BIT(10); } WARN(errors, "Invalid RXON (%#x), channel %d", errors, le16_to_cpu(rxon->channel)); return errors ? -EINVAL : 0; } /** * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed * @priv: staging_rxon is compared to active_rxon * * If the RXON structure is changing enough to require a new tune, * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required. */ static int iwl_full_rxon_required(struct iwl_priv *priv, struct iwl_rxon_context *ctx) { const struct iwl_rxon_cmd *staging = &ctx->staging; const struct iwl_rxon_cmd *active = &ctx->active; #define CHK(cond) \ if ((cond)) { \ IWL_DEBUG_INFO(priv, "need full RXON - " #cond "\n"); \ return 1; \ } #define CHK_NEQ(c1, c2) \ if ((c1) != (c2)) { \ IWL_DEBUG_INFO(priv, "need full RXON - " \ #c1 " != " #c2 " - %d != %d\n", \ (c1), (c2)); \ return 1; \ } /* These items are only settable from the full RXON command */ CHK(!iwl_is_associated_ctx(ctx)); CHK(!ether_addr_equal(staging->bssid_addr, active->bssid_addr)); CHK(!ether_addr_equal(staging->node_addr, active->node_addr)); CHK(!ether_addr_equal(staging->wlap_bssid_addr, active->wlap_bssid_addr)); CHK_NEQ(staging->dev_type, active->dev_type); CHK_NEQ(staging->channel, active->channel); CHK_NEQ(staging->air_propagation, active->air_propagation); CHK_NEQ(staging->ofdm_ht_single_stream_basic_rates, active->ofdm_ht_single_stream_basic_rates); CHK_NEQ(staging->ofdm_ht_dual_stream_basic_rates, active->ofdm_ht_dual_stream_basic_rates); CHK_NEQ(staging->ofdm_ht_triple_stream_basic_rates, active->ofdm_ht_triple_stream_basic_rates); CHK_NEQ(staging->assoc_id, active->assoc_id); /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can * be updated with the RXON_ASSOC command -- however only some * flag transitions are allowed using RXON_ASSOC */ /* Check if we are not switching bands */ CHK_NEQ(staging->flags & RXON_FLG_BAND_24G_MSK, active->flags & RXON_FLG_BAND_24G_MSK); /* Check if we are switching association toggle */ CHK_NEQ(staging->filter_flags & RXON_FILTER_ASSOC_MSK, active->filter_flags & RXON_FILTER_ASSOC_MSK); #undef CHK #undef CHK_NEQ return 0; } #ifdef CONFIG_IWLWIFI_DEBUG void iwl_print_rx_config_cmd(struct iwl_priv *priv, enum iwl_rxon_context_id ctxid) { struct iwl_rxon_context *ctx = &priv->contexts[ctxid]; struct iwl_rxon_cmd *rxon = &ctx->staging; IWL_DEBUG_RADIO(priv, "RX CONFIG:\n"); iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon)); IWL_DEBUG_RADIO(priv, "u16 channel: 0x%x\n", le16_to_cpu(rxon->channel)); IWL_DEBUG_RADIO(priv, "u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags)); IWL_DEBUG_RADIO(priv, "u32 filter_flags: 0x%08x\n", le32_to_cpu(rxon->filter_flags)); IWL_DEBUG_RADIO(priv, "u8 dev_type: 0x%x\n", rxon->dev_type); IWL_DEBUG_RADIO(priv, "u8 ofdm_basic_rates: 0x%02x\n", rxon->ofdm_basic_rates); IWL_DEBUG_RADIO(priv, "u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates); IWL_DEBUG_RADIO(priv, "u8[6] node_addr: %pM\n", rxon->node_addr); IWL_DEBUG_RADIO(priv, "u8[6] bssid_addr: %pM\n", rxon->bssid_addr); IWL_DEBUG_RADIO(priv, "u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id)); } #endif static void iwl_calc_basic_rates(struct iwl_priv *priv, struct iwl_rxon_context *ctx) { int lowest_present_ofdm = 100; int lowest_present_cck = 100; u8 cck = 0; u8 ofdm = 0; if (ctx->vif) { struct ieee80211_supported_band *sband; unsigned long basic = ctx->vif->bss_conf.basic_rates; int i; sband = priv->hw->wiphy->bands[priv->hw->conf.channel->band]; for_each_set_bit(i, &basic, BITS_PER_LONG) { int hw = sband->bitrates[i].hw_value; if (hw >= IWL_FIRST_OFDM_RATE) { ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE); if (lowest_present_ofdm > hw) lowest_present_ofdm = hw; } else { BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); cck |= BIT(hw); if (lowest_present_cck > hw) lowest_present_cck = hw; } } } /* * Now we've got the basic rates as bitmaps in the ofdm and cck * variables. This isn't sufficient though, as there might not * be all the right rates in the bitmap. E.g. if the only basic * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps * and 6 Mbps because the 802.11-2007 standard says in 9.6: * * [...] a STA responding to a received frame shall transmit * its Control Response frame [...] at the highest rate in the * BSSBasicRateSet parameter that is less than or equal to the * rate of the immediately previous frame in the frame exchange * sequence ([...]) and that is of the same modulation class * ([...]) as the received frame. If no rate contained in the * BSSBasicRateSet parameter meets these conditions, then the * control frame sent in response to a received frame shall be * transmitted at the highest mandatory rate of the PHY that is * less than or equal to the rate of the received frame, and * that is of the same modulation class as the received frame. * * As a consequence, we need to add all mandatory rates that are * lower than all of the basic rates to these bitmaps. */ if (IWL_RATE_24M_INDEX < lowest_present_ofdm) ofdm |= IWL_RATE_24M_MASK >> IWL_FIRST_OFDM_RATE; if (IWL_RATE_12M_INDEX < lowest_present_ofdm) ofdm |= IWL_RATE_12M_MASK >> IWL_FIRST_OFDM_RATE; /* 6M already there or needed so always add */ ofdm |= IWL_RATE_6M_MASK >> IWL_FIRST_OFDM_RATE; /* * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP. * Note, however: * - if no CCK rates are basic, it must be ERP since there must * be some basic rates at all, so they're OFDM => ERP PHY * (or we're in 5 GHz, and the cck bitmap will never be used) * - if 11M is a basic rate, it must be ERP as well, so add 5.5M * - if 5.5M is basic, 1M and 2M are mandatory * - if 2M is basic, 1M is mandatory * - if 1M is basic, that's the only valid ACK rate. * As a consequence, it's not as complicated as it sounds, just add * any lower rates to the ACK rate bitmap. */ if (IWL_RATE_11M_INDEX < lowest_present_ofdm) ofdm |= IWL_RATE_11M_MASK >> IWL_FIRST_CCK_RATE; if (IWL_RATE_5M_INDEX < lowest_present_ofdm) ofdm |= IWL_RATE_5M_MASK >> IWL_FIRST_CCK_RATE; if (IWL_RATE_2M_INDEX < lowest_present_ofdm) ofdm |= IWL_RATE_2M_MASK >> IWL_FIRST_CCK_RATE; /* 1M already there or needed so always add */ cck |= IWL_RATE_1M_MASK >> IWL_FIRST_CCK_RATE; IWL_DEBUG_RATE(priv, "Set basic rates cck:0x%.2x ofdm:0x%.2x\n", cck, ofdm); /* "basic_rates" is a misnomer here -- should be called ACK rates */ ctx->staging.cck_basic_rates = cck; ctx->staging.ofdm_basic_rates = ofdm; } /** * iwlagn_commit_rxon - commit staging_rxon to hardware * * The RXON command in staging_rxon is committed to the hardware and * the active_rxon structure is updated with the new data. This * function correctly transitions out of the RXON_ASSOC_MSK state if * a HW tune is required based on the RXON structure changes. * * The connect/disconnect flow should be as the following: * * 1. make sure send RXON command with association bit unset if not connect * this should include the channel and the band for the candidate * to be connected to * 2. Add Station before RXON association with the AP * 3. RXON_timing has to send before RXON for connection * 4. full RXON command - associated bit set * 5. use RXON_ASSOC command to update any flags changes */ int iwlagn_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx) { /* cast away the const for active_rxon in this function */ struct iwl_rxon_cmd *active = (void *)&ctx->active; bool new_assoc = !!(ctx->staging.filter_flags & RXON_FILTER_ASSOC_MSK); int ret; lockdep_assert_held(&priv->mutex); if (!iwl_is_alive(priv)) return -EBUSY; /* This function hardcodes a bunch of dual-mode assumptions */ BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2); if (!ctx->is_active) return 0; /* always get timestamp with Rx frame */ ctx->staging.flags |= RXON_FLG_TSF2HOST_MSK; /* recalculate basic rates */ iwl_calc_basic_rates(priv, ctx); /* * force CTS-to-self frames protection if RTS-CTS is not preferred * one aggregation protection method */ if (!priv->hw_params.use_rts_for_aggregation) ctx->staging.flags |= RXON_FLG_SELF_CTS_EN; if ((ctx->vif && ctx->vif->bss_conf.use_short_slot) || !(ctx->staging.flags & RXON_FLG_BAND_24G_MSK)) ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; else ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; iwl_print_rx_config_cmd(priv, ctx->ctxid); ret = iwl_check_rxon_cmd(priv, ctx); if (ret) { IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n"); return -EINVAL; } /* * receive commit_rxon request * abort any previous channel switch if still in process */ if (test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status) && (priv->switch_channel != ctx->staging.channel)) { IWL_DEBUG_11H(priv, "abort channel switch on %d\n", le16_to_cpu(priv->switch_channel)); iwl_chswitch_done(priv, false); } /* * If we don't need to send a full RXON, we can use * iwl_rxon_assoc_cmd which is used to reconfigure filter * and other flags for the current radio configuration. */ if (!iwl_full_rxon_required(priv, ctx)) { ret = iwlagn_send_rxon_assoc(priv, ctx); if (ret) { IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret); return ret; } memcpy(active, &ctx->staging, sizeof(*active)); /* * We do not commit tx power settings while channel changing, * do it now if after settings changed. */ iwl_set_tx_power(priv, priv->tx_power_next, false); /* make sure we are in the right PS state */ iwl_power_update_mode(priv, true); return 0; } iwl_set_rxon_hwcrypto(priv, ctx, !iwlwifi_mod_params.sw_crypto); IWL_DEBUG_INFO(priv, "Going to commit RXON\n" " * with%s RXON_FILTER_ASSOC_MSK\n" " * channel = %d\n" " * bssid = %pM\n", (new_assoc ? "" : "out"), le16_to_cpu(ctx->staging.channel), ctx->staging.bssid_addr); /* * Always clear associated first, but with the correct config. * This is required as for example station addition for the * AP station must be done after the BSSID is set to correctly * set up filters in the device. */ ret = iwlagn_rxon_disconn(priv, ctx); if (ret) return ret; ret = iwlagn_set_pan_params(priv); if (ret) return ret; if (new_assoc) return iwlagn_rxon_connect(priv, ctx); return 0; } void iwlagn_config_ht40(struct ieee80211_conf *conf, struct iwl_rxon_context *ctx) { if (conf_is_ht40_minus(conf)) { ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW; ctx->ht.is_40mhz = true; } else if (conf_is_ht40_plus(conf)) { ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; ctx->ht.is_40mhz = true; } else { ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE; ctx->ht.is_40mhz = false; } } int iwlagn_mac_config(struct ieee80211_hw *hw, u32 changed) { struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); struct iwl_rxon_context *ctx; struct ieee80211_conf *conf = &hw->conf; struct ieee80211_channel *channel = conf->channel; int ret = 0; IWL_DEBUG_MAC80211(priv, "enter: changed %#x\n", changed); mutex_lock(&priv->mutex); if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) { IWL_DEBUG_MAC80211(priv, "leave - scanning\n"); goto out; } if (!iwl_is_ready(priv)) { IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); goto out; } if (changed & (IEEE80211_CONF_CHANGE_SMPS | IEEE80211_CONF_CHANGE_CHANNEL)) { /* mac80211 uses static for non-HT which is what we want */ priv->current_ht_config.smps = conf->smps_mode; /* * Recalculate chain counts. * * If monitor mode is enabled then mac80211 will * set up the SM PS mode to OFF if an HT channel is * configured. */ for_each_context(priv, ctx) iwlagn_set_rxon_chain(priv, ctx); } if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { for_each_context(priv, ctx) { /* Configure HT40 channels */ if (ctx->ht.enabled != conf_is_ht(conf)) ctx->ht.enabled = conf_is_ht(conf); if (ctx->ht.enabled) { /* if HT40 is used, it should not change * after associated except channel switch */ if (!ctx->ht.is_40mhz || !iwl_is_associated_ctx(ctx)) iwlagn_config_ht40(conf, ctx); } else ctx->ht.is_40mhz = false; /* * Default to no protection. Protection mode will * later be set from BSS config in iwl_ht_conf */ ctx->ht.protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE; /* if we are switching from ht to 2.4 clear flags * from any ht related info since 2.4 does not * support ht */ if (le16_to_cpu(ctx->staging.channel) != channel->hw_value) ctx->staging.flags = 0; iwl_set_rxon_channel(priv, channel, ctx); iwl_set_rxon_ht(priv, &priv->current_ht_config); iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif); } iwl_update_bcast_stations(priv); } if (changed & (IEEE80211_CONF_CHANGE_PS | IEEE80211_CONF_CHANGE_IDLE)) { ret = iwl_power_update_mode(priv, false); if (ret) IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n"); } if (changed & IEEE80211_CONF_CHANGE_POWER) { IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n", priv->tx_power_user_lmt, conf->power_level); iwl_set_tx_power(priv, conf->power_level, false); } for_each_context(priv, ctx) { if (!memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging))) continue; iwlagn_commit_rxon(priv, ctx); } out: mutex_unlock(&priv->mutex); IWL_DEBUG_MAC80211(priv, "leave\n"); return ret; } static void iwlagn_check_needed_chains(struct iwl_priv *priv, struct iwl_rxon_context *ctx, struct ieee80211_bss_conf *bss_conf) { struct ieee80211_vif *vif = ctx->vif; struct iwl_rxon_context *tmp; struct ieee80211_sta *sta; struct iwl_ht_config *ht_conf = &priv->current_ht_config; struct ieee80211_sta_ht_cap *ht_cap; bool need_multiple; lockdep_assert_held(&priv->mutex); switch (vif->type) { case NL80211_IFTYPE_STATION: rcu_read_lock(); sta = ieee80211_find_sta(vif, bss_conf->bssid); if (!sta) { /* * If at all, this can only happen through a race * when the AP disconnects us while we're still * setting up the connection, in that case mac80211 * will soon tell us about that. */ need_multiple = false; rcu_read_unlock(); break; } ht_cap = &sta->ht_cap; need_multiple = true; /* * If the peer advertises no support for receiving 2 and 3 * stream MCS rates, it can't be transmitting them either. */ if (ht_cap->mcs.rx_mask[1] == 0 && ht_cap->mcs.rx_mask[2] == 0) { need_multiple = false; } else if (!(ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_DEFINED)) { /* If it can't TX MCS at all ... */ need_multiple = false; } else if (ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_RX_DIFF) { int maxstreams; /* * But if it can receive them, it might still not * be able to transmit them, which is what we need * to check here -- so check the number of streams * it advertises for TX (if different from RX). */ maxstreams = (ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK); maxstreams >>= IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; maxstreams += 1; if (maxstreams <= 1) need_multiple = false; } rcu_read_unlock(); break; case NL80211_IFTYPE_ADHOC: /* currently */ need_multiple = false; break; default: /* only AP really */ need_multiple = true; break; } ctx->ht_need_multiple_chains = need_multiple; if (!need_multiple) { /* check all contexts */ for_each_context(priv, tmp) { if (!tmp->vif) continue; if (tmp->ht_need_multiple_chains) { need_multiple = true; break; } } } ht_conf->single_chain_sufficient = !need_multiple; } static void iwlagn_chain_noise_reset(struct iwl_priv *priv) { struct iwl_chain_noise_data *data = &priv->chain_noise_data; int ret; if (!(priv->calib_disabled & IWL_CHAIN_NOISE_CALIB_DISABLED)) return; if ((data->state == IWL_CHAIN_NOISE_ALIVE) && iwl_is_any_associated(priv)) { struct iwl_calib_chain_noise_reset_cmd cmd; /* clear data for chain noise calibration algorithm */ data->chain_noise_a = 0; data->chain_noise_b = 0; data->chain_noise_c = 0; data->chain_signal_a = 0; data->chain_signal_b = 0; data->chain_signal_c = 0; data->beacon_count = 0; memset(&cmd, 0, sizeof(cmd)); iwl_set_calib_hdr(&cmd.hdr, priv->phy_calib_chain_noise_reset_cmd); ret = iwl_dvm_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD, CMD_SYNC, sizeof(cmd), &cmd); if (ret) IWL_ERR(priv, "Could not send REPLY_PHY_CALIBRATION_CMD\n"); data->state = IWL_CHAIN_NOISE_ACCUMULATE; IWL_DEBUG_CALIB(priv, "Run chain_noise_calibrate\n"); } } void iwlagn_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_bss_conf *bss_conf, u32 changes) { struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); int ret; bool force = false; mutex_lock(&priv->mutex); if (unlikely(!iwl_is_ready(priv))) { IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); mutex_unlock(&priv->mutex); return; } if (unlikely(!ctx->vif)) { IWL_DEBUG_MAC80211(priv, "leave - vif is NULL\n"); mutex_unlock(&priv->mutex); return; } if (changes & BSS_CHANGED_BEACON_INT) force = true; if (changes & BSS_CHANGED_QOS) { ctx->qos_data.qos_active = bss_conf->qos; iwlagn_update_qos(priv, ctx); } ctx->staging.assoc_id = cpu_to_le16(vif->bss_conf.aid); if (vif->bss_conf.use_short_preamble) ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; else ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; if (changes & BSS_CHANGED_ASSOC) { if (bss_conf->assoc) { priv->timestamp = bss_conf->last_tsf; ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; } else { /* * If we disassociate while there are pending * frames, just wake up the queues and let the * frames "escape" ... This shouldn't really * be happening to start with, but we should * not get stuck in this case either since it * can happen if userspace gets confused. */ iwlagn_lift_passive_no_rx(priv); ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; if (ctx->ctxid == IWL_RXON_CTX_BSS) priv->have_rekey_data = false; } iwlagn_bt_coex_rssi_monitor(priv); } if (ctx->ht.enabled) { ctx->ht.protection = bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION; ctx->ht.non_gf_sta_present = !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); iwlagn_check_needed_chains(priv, ctx, bss_conf); iwl_set_rxon_ht(priv, &priv->current_ht_config); } iwlagn_set_rxon_chain(priv, ctx); if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ)) ctx->staging.flags |= RXON_FLG_TGG_PROTECT_MSK; else ctx->staging.flags &= ~RXON_FLG_TGG_PROTECT_MSK; if (bss_conf->use_cts_prot) ctx->staging.flags |= RXON_FLG_SELF_CTS_EN; else ctx->staging.flags &= ~RXON_FLG_SELF_CTS_EN; memcpy(ctx->staging.bssid_addr, bss_conf->bssid, ETH_ALEN); if (vif->type == NL80211_IFTYPE_AP || vif->type == NL80211_IFTYPE_ADHOC) { if (vif->bss_conf.enable_beacon) { ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; priv->beacon_ctx = ctx; } else { ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; priv->beacon_ctx = NULL; } } /* * If the ucode decides to do beacon filtering before * association, it will lose beacons that are needed * before sending frames out on passive channels. This * causes association failures on those channels. Enable * receiving beacons in such cases. */ if (vif->type == NL80211_IFTYPE_STATION) { if (!bss_conf->assoc) ctx->staging.filter_flags |= RXON_FILTER_BCON_AWARE_MSK; else ctx->staging.filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK; } if (force || memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging))) iwlagn_commit_rxon(priv, ctx); if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) { /* * The chain noise calibration will enable PM upon * completion. If calibration has already been run * then we need to enable power management here. */ if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE) iwl_power_update_mode(priv, false); /* Enable RX differential gain and sensitivity calibrations */ iwlagn_chain_noise_reset(priv); priv->start_calib = 1; } if (changes & BSS_CHANGED_IBSS) { ret = iwlagn_manage_ibss_station(priv, vif, bss_conf->ibss_joined); if (ret) IWL_ERR(priv, "failed to %s IBSS station %pM\n", bss_conf->ibss_joined ? "add" : "remove", bss_conf->bssid); } if (changes & BSS_CHANGED_BEACON && vif->type == NL80211_IFTYPE_ADHOC && priv->beacon_ctx) { if (iwlagn_update_beacon(priv, vif)) IWL_ERR(priv, "Error sending IBSS beacon\n"); } mutex_unlock(&priv->mutex); } void iwlagn_post_scan(struct iwl_priv *priv) { struct iwl_rxon_context *ctx; /* * We do not commit power settings while scan is pending, * do it now if the settings changed. */ iwl_power_set_mode(priv, &priv->power_data.sleep_cmd_next, false); iwl_set_tx_power(priv, priv->tx_power_next, false); /* * Since setting the RXON may have been deferred while * performing the scan, fire one off if needed */ for_each_context(priv, ctx) if (memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging))) iwlagn_commit_rxon(priv, ctx); iwlagn_set_pan_params(priv); }