| /****************************************************************************** |
| * |
| * 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 <ilw@linux.intel.com> |
| * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| * |
| *****************************************************************************/ |
| |
| #include <linux/etherdevice.h> |
| #include "iwl-dev.h" |
| #include "iwl-agn.h" |
| #include "iwl-core.h" |
| #include "iwl-agn-calib.h" |
| #include "iwl-trans.h" |
| #include "iwl-shared.h" |
| |
| /* |
| * initialize rxon structure with default values from eeprom |
| */ |
| void iwl_connection_init_rx_config(struct iwl_priv *priv, |
| struct iwl_rxon_context *ctx) |
| { |
| const struct iwl_channel_info *ch_info; |
| |
| 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; |
| |
| 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 |
| |
| ch_info = iwl_get_channel_info(priv, priv->band, |
| le16_to_cpu(ctx->active.channel)); |
| |
| if (!ch_info) |
| ch_info = &priv->channel_info[0]; |
| |
| ctx->staging.channel = cpu_to_le16(ch_info->channel); |
| priv->band = ch_info->band; |
| |
| iwl_set_flags_for_band(priv, ctx, priv->band, ctx->vif); |
| |
| ctx->staging.ofdm_basic_rates = |
| (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; |
| ctx->staging.cck_basic_rates = |
| (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF; |
| |
| /* 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; |
| } |
| |
| 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"); |
| } |
| |
| 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 > priv->tx_power_device_lmt) { |
| IWL_WARN(priv, |
| "Requested user TXPOWER %d above upper limit %d.\n", |
| tx_power, priv->tx_power_device_lmt); |
| 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; |
| } |
| } |
| |
| void iwl_set_rate(struct iwl_priv *priv) |
| { |
| struct iwl_rxon_context *ctx; |
| |
| for_each_context(priv, ctx) { |
| ctx->staging.cck_basic_rates = |
| (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF; |
| |
| ctx->staging.ofdm_basic_rates = |
| (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF; |
| } |
| } |
| |
| 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. |
| */ |
| 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(compare_ether_addr(staging->bssid_addr, active->bssid_addr)); |
| CHK(compare_ether_addr(staging->node_addr, active->node_addr)); |
| CHK(compare_ether_addr(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 |
| |
| /** |
| * 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; |
| |
| /* |
| * 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, !iwlagn_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; |
| const struct iwl_channel_info *ch_info; |
| 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) { |
| ch_info = iwl_get_channel_info(priv, channel->band, |
| channel->hw_value); |
| if (!is_channel_valid(ch_info)) { |
| IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n"); |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| 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); |
| |
| /* |
| * The list of supported rates and rate mask can be different |
| * for each band; since the band may have changed, reset |
| * the rate mask to what mac80211 lists. |
| */ |
| iwl_set_rate(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; |
| } |
| |
| 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; |
| } |
| |
| 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); |
| } |