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1626 lines
42 KiB
1626 lines
42 KiB
// SPDX-License-Identifier: GPL-2.0-only |
|
/****************************************************************************** |
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* |
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* Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved. |
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* Copyright (C) 2018 - 2019 Intel Corporation |
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* |
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* Portions of this file are derived from the ipw3945 project, as well |
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* as portions of the ieee80211 subsystem header files. |
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* |
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* Contact Information: |
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* Intel Linux Wireless <[email protected]> |
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
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* |
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*****************************************************************************/ |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/slab.h> |
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#include <linux/dma-mapping.h> |
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#include <linux/delay.h> |
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#include <linux/sched.h> |
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#include <linux/skbuff.h> |
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#include <linux/netdevice.h> |
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#include <linux/etherdevice.h> |
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#include <linux/if_arp.h> |
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|
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#include <net/ieee80211_radiotap.h> |
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#include <net/mac80211.h> |
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|
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#include <asm/div64.h> |
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|
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#include "iwl-io.h" |
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#include "iwl-trans.h" |
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#include "iwl-op-mode.h" |
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#include "iwl-modparams.h" |
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|
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#include "dev.h" |
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#include "calib.h" |
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#include "agn.h" |
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|
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/***************************************************************************** |
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* |
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* mac80211 entry point functions |
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* |
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*****************************************************************************/ |
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|
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static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = { |
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{ |
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.max = 1, |
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.types = BIT(NL80211_IFTYPE_STATION), |
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}, |
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{ |
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.max = 1, |
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.types = BIT(NL80211_IFTYPE_AP), |
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}, |
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}; |
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|
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static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = { |
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{ |
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.max = 2, |
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.types = BIT(NL80211_IFTYPE_STATION), |
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}, |
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}; |
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|
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static const struct ieee80211_iface_combination |
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iwlagn_iface_combinations_dualmode[] = { |
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{ .num_different_channels = 1, |
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.max_interfaces = 2, |
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.beacon_int_infra_match = true, |
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.limits = iwlagn_sta_ap_limits, |
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.n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits), |
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}, |
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{ .num_different_channels = 1, |
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.max_interfaces = 2, |
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.limits = iwlagn_2sta_limits, |
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.n_limits = ARRAY_SIZE(iwlagn_2sta_limits), |
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}, |
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}; |
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|
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/* |
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* Not a mac80211 entry point function, but it fits in with all the |
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* other mac80211 functions grouped here. |
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*/ |
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int iwlagn_mac_setup_register(struct iwl_priv *priv, |
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const struct iwl_ucode_capabilities *capa) |
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{ |
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int ret; |
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struct ieee80211_hw *hw = priv->hw; |
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struct iwl_rxon_context *ctx; |
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|
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hw->rate_control_algorithm = "iwl-agn-rs"; |
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|
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/* Tell mac80211 our characteristics */ |
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ieee80211_hw_set(hw, SIGNAL_DBM); |
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ieee80211_hw_set(hw, AMPDU_AGGREGATION); |
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ieee80211_hw_set(hw, NEED_DTIM_BEFORE_ASSOC); |
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ieee80211_hw_set(hw, SPECTRUM_MGMT); |
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ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); |
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ieee80211_hw_set(hw, QUEUE_CONTROL); |
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ieee80211_hw_set(hw, SUPPORTS_PS); |
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ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); |
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ieee80211_hw_set(hw, SUPPORT_FAST_XMIT); |
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ieee80211_hw_set(hw, WANT_MONITOR_VIF); |
|
|
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if (priv->trans->max_skb_frags) |
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hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG; |
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|
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hw->offchannel_tx_hw_queue = IWL_AUX_QUEUE; |
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hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FMT; |
|
|
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/* |
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* Including the following line will crash some AP's. This |
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* workaround removes the stimulus which causes the crash until |
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* the AP software can be fixed. |
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hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF; |
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*/ |
|
|
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if (priv->nvm_data->sku_cap_11n_enable) |
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hw->wiphy->features |= NL80211_FEATURE_DYNAMIC_SMPS | |
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NL80211_FEATURE_STATIC_SMPS; |
|
|
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/* |
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* Enable 11w if advertised by firmware and software crypto |
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* is not enabled (as the firmware will interpret some mgmt |
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* packets, so enabling it with software crypto isn't safe) |
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*/ |
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if (priv->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP && |
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!iwlwifi_mod_params.swcrypto) |
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ieee80211_hw_set(hw, MFP_CAPABLE); |
|
|
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hw->sta_data_size = sizeof(struct iwl_station_priv); |
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hw->vif_data_size = sizeof(struct iwl_vif_priv); |
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|
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for_each_context(priv, ctx) { |
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hw->wiphy->interface_modes |= ctx->interface_modes; |
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hw->wiphy->interface_modes |= ctx->exclusive_interface_modes; |
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} |
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|
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BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2); |
|
|
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if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) { |
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hw->wiphy->iface_combinations = |
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iwlagn_iface_combinations_dualmode; |
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hw->wiphy->n_iface_combinations = |
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ARRAY_SIZE(iwlagn_iface_combinations_dualmode); |
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} |
|
|
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hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; |
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hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG | |
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REGULATORY_DISABLE_BEACON_HINTS; |
|
|
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#ifdef CONFIG_PM_SLEEP |
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if (priv->fw->img[IWL_UCODE_WOWLAN].num_sec && |
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priv->trans->ops->d3_suspend && |
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priv->trans->ops->d3_resume && |
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device_can_wakeup(priv->trans->dev)) { |
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priv->wowlan_support.flags = WIPHY_WOWLAN_MAGIC_PKT | |
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WIPHY_WOWLAN_DISCONNECT | |
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WIPHY_WOWLAN_EAP_IDENTITY_REQ | |
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WIPHY_WOWLAN_RFKILL_RELEASE; |
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if (!iwlwifi_mod_params.swcrypto) |
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priv->wowlan_support.flags |= |
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WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | |
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WIPHY_WOWLAN_GTK_REKEY_FAILURE; |
|
|
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priv->wowlan_support.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS; |
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priv->wowlan_support.pattern_min_len = |
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IWLAGN_WOWLAN_MIN_PATTERN_LEN; |
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priv->wowlan_support.pattern_max_len = |
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IWLAGN_WOWLAN_MAX_PATTERN_LEN; |
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hw->wiphy->wowlan = &priv->wowlan_support; |
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} |
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#endif |
|
|
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if (iwlwifi_mod_params.power_save) |
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hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; |
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else |
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hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; |
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|
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hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX; |
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/* we create the 802.11 header and a max-length SSID element */ |
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hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 34; |
|
|
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/* |
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* We don't use all queues: 4 and 9 are unused and any |
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* aggregation queue gets mapped down to the AC queue. |
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*/ |
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hw->queues = IWLAGN_FIRST_AMPDU_QUEUE; |
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|
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hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL; |
|
|
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if (priv->nvm_data->bands[NL80211_BAND_2GHZ].n_channels) |
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priv->hw->wiphy->bands[NL80211_BAND_2GHZ] = |
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&priv->nvm_data->bands[NL80211_BAND_2GHZ]; |
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if (priv->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) |
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priv->hw->wiphy->bands[NL80211_BAND_5GHZ] = |
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&priv->nvm_data->bands[NL80211_BAND_5GHZ]; |
|
|
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hw->wiphy->hw_version = priv->trans->hw_id; |
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|
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iwl_leds_init(priv); |
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|
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wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); |
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wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_EXT_KEY_ID); |
|
|
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ret = ieee80211_register_hw(priv->hw); |
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if (ret) { |
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IWL_ERR(priv, "Failed to register hw (error %d)\n", ret); |
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iwl_leds_exit(priv); |
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return ret; |
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} |
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priv->mac80211_registered = 1; |
|
|
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return 0; |
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} |
|
|
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void iwlagn_mac_unregister(struct iwl_priv *priv) |
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{ |
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if (!priv->mac80211_registered) |
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return; |
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iwl_leds_exit(priv); |
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ieee80211_unregister_hw(priv->hw); |
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priv->mac80211_registered = 0; |
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} |
|
|
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static int __iwl_up(struct iwl_priv *priv) |
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{ |
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struct iwl_rxon_context *ctx; |
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int ret; |
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|
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lockdep_assert_held(&priv->mutex); |
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|
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if (test_bit(STATUS_EXIT_PENDING, &priv->status)) { |
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IWL_WARN(priv, "Exit pending; will not bring the NIC up\n"); |
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return -EIO; |
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} |
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|
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for_each_context(priv, ctx) { |
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ret = iwlagn_alloc_bcast_station(priv, ctx); |
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if (ret) { |
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iwl_dealloc_bcast_stations(priv); |
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return ret; |
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} |
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} |
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|
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ret = iwl_trans_start_hw(priv->trans); |
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if (ret) { |
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IWL_ERR(priv, "Failed to start HW: %d\n", ret); |
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goto error; |
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} |
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|
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ret = iwl_run_init_ucode(priv); |
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if (ret) { |
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IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret); |
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goto error; |
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} |
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|
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ret = iwl_trans_start_hw(priv->trans); |
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if (ret) { |
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IWL_ERR(priv, "Failed to start HW: %d\n", ret); |
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goto error; |
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} |
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|
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ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_REGULAR); |
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if (ret) { |
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IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret); |
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goto error; |
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} |
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|
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ret = iwl_alive_start(priv); |
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if (ret) |
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goto error; |
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return 0; |
|
|
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error: |
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set_bit(STATUS_EXIT_PENDING, &priv->status); |
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iwl_down(priv); |
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clear_bit(STATUS_EXIT_PENDING, &priv->status); |
|
|
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IWL_ERR(priv, "Unable to initialize device.\n"); |
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return ret; |
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} |
|
|
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static int iwlagn_mac_start(struct ieee80211_hw *hw) |
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{ |
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struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
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int ret; |
|
|
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IWL_DEBUG_MAC80211(priv, "enter\n"); |
|
|
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/* we should be verifying the device is ready to be opened */ |
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mutex_lock(&priv->mutex); |
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ret = __iwl_up(priv); |
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mutex_unlock(&priv->mutex); |
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if (ret) |
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return ret; |
|
|
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IWL_DEBUG_INFO(priv, "Start UP work done.\n"); |
|
|
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/* Now we should be done, and the READY bit should be set. */ |
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if (WARN_ON(!test_bit(STATUS_READY, &priv->status))) |
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ret = -EIO; |
|
|
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iwlagn_led_enable(priv); |
|
|
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priv->is_open = 1; |
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IWL_DEBUG_MAC80211(priv, "leave\n"); |
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return 0; |
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} |
|
|
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static void iwlagn_mac_stop(struct ieee80211_hw *hw) |
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{ |
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struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
|
|
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IWL_DEBUG_MAC80211(priv, "enter\n"); |
|
|
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if (!priv->is_open) |
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return; |
|
|
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priv->is_open = 0; |
|
|
|
mutex_lock(&priv->mutex); |
|
iwl_down(priv); |
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mutex_unlock(&priv->mutex); |
|
|
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iwl_cancel_deferred_work(priv); |
|
|
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flush_workqueue(priv->workqueue); |
|
|
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IWL_DEBUG_MAC80211(priv, "leave\n"); |
|
} |
|
|
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static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, |
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struct cfg80211_gtk_rekey_data *data) |
|
{ |
|
struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
|
|
|
if (iwlwifi_mod_params.swcrypto) |
|
return; |
|
|
|
IWL_DEBUG_MAC80211(priv, "enter\n"); |
|
mutex_lock(&priv->mutex); |
|
|
|
if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif) |
|
goto out; |
|
|
|
memcpy(priv->kek, data->kek, NL80211_KEK_LEN); |
|
memcpy(priv->kck, data->kck, NL80211_KCK_LEN); |
|
priv->replay_ctr = |
|
cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr)); |
|
priv->have_rekey_data = true; |
|
|
|
out: |
|
mutex_unlock(&priv->mutex); |
|
IWL_DEBUG_MAC80211(priv, "leave\n"); |
|
} |
|
|
|
#ifdef CONFIG_PM_SLEEP |
|
|
|
static int iwlagn_mac_suspend(struct ieee80211_hw *hw, |
|
struct cfg80211_wowlan *wowlan) |
|
{ |
|
struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
|
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
|
int ret; |
|
|
|
if (WARN_ON(!wowlan)) |
|
return -EINVAL; |
|
|
|
IWL_DEBUG_MAC80211(priv, "enter\n"); |
|
mutex_lock(&priv->mutex); |
|
|
|
/* Don't attempt WoWLAN when not associated, tear down instead. */ |
|
if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION || |
|
!iwl_is_associated_ctx(ctx)) { |
|
ret = 1; |
|
goto out; |
|
} |
|
|
|
ret = iwlagn_suspend(priv, wowlan); |
|
if (ret) |
|
goto error; |
|
|
|
/* let the ucode operate on its own */ |
|
iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_SET, |
|
CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE); |
|
|
|
iwl_trans_d3_suspend(priv->trans, false, true); |
|
|
|
goto out; |
|
|
|
error: |
|
priv->wowlan = false; |
|
iwlagn_prepare_restart(priv); |
|
ieee80211_restart_hw(priv->hw); |
|
out: |
|
mutex_unlock(&priv->mutex); |
|
IWL_DEBUG_MAC80211(priv, "leave\n"); |
|
|
|
return ret; |
|
} |
|
|
|
struct iwl_resume_data { |
|
struct iwl_priv *priv; |
|
struct iwlagn_wowlan_status *cmd; |
|
bool valid; |
|
}; |
|
|
|
static bool iwl_resume_status_fn(struct iwl_notif_wait_data *notif_wait, |
|
struct iwl_rx_packet *pkt, void *data) |
|
{ |
|
struct iwl_resume_data *resume_data = data; |
|
struct iwl_priv *priv = resume_data->priv; |
|
|
|
if (iwl_rx_packet_payload_len(pkt) != sizeof(*resume_data->cmd)) { |
|
IWL_ERR(priv, "rx wrong size data\n"); |
|
return true; |
|
} |
|
memcpy(resume_data->cmd, pkt->data, sizeof(*resume_data->cmd)); |
|
resume_data->valid = true; |
|
|
|
return true; |
|
} |
|
|
|
static int iwlagn_mac_resume(struct ieee80211_hw *hw) |
|
{ |
|
struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
|
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
|
struct ieee80211_vif *vif; |
|
u32 base; |
|
int ret; |
|
enum iwl_d3_status d3_status; |
|
struct error_table_start { |
|
/* cf. struct iwl_error_event_table */ |
|
u32 valid; |
|
u32 error_id; |
|
} err_info; |
|
struct iwl_notification_wait status_wait; |
|
static const u16 status_cmd[] = { |
|
REPLY_WOWLAN_GET_STATUS, |
|
}; |
|
struct iwlagn_wowlan_status status_data = {}; |
|
struct iwl_resume_data resume_data = { |
|
.priv = priv, |
|
.cmd = &status_data, |
|
.valid = false, |
|
}; |
|
struct cfg80211_wowlan_wakeup wakeup = { |
|
.pattern_idx = -1, |
|
}; |
|
#ifdef CONFIG_IWLWIFI_DEBUGFS |
|
const struct fw_img *img; |
|
#endif |
|
|
|
IWL_DEBUG_MAC80211(priv, "enter\n"); |
|
mutex_lock(&priv->mutex); |
|
|
|
/* we'll clear ctx->vif during iwlagn_prepare_restart() */ |
|
vif = ctx->vif; |
|
|
|
ret = iwl_trans_d3_resume(priv->trans, &d3_status, false, true); |
|
if (ret) |
|
goto out_unlock; |
|
|
|
if (d3_status != IWL_D3_STATUS_ALIVE) { |
|
IWL_INFO(priv, "Device was reset during suspend\n"); |
|
goto out_unlock; |
|
} |
|
|
|
/* uCode is no longer operating by itself */ |
|
iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR, |
|
CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE); |
|
|
|
base = priv->device_pointers.error_event_table; |
|
if (!iwlagn_hw_valid_rtc_data_addr(base)) { |
|
IWL_WARN(priv, "Invalid error table during resume!\n"); |
|
goto out_unlock; |
|
} |
|
|
|
iwl_trans_read_mem_bytes(priv->trans, base, |
|
&err_info, sizeof(err_info)); |
|
|
|
if (err_info.valid) { |
|
IWL_INFO(priv, "error table is valid (%d, 0x%x)\n", |
|
err_info.valid, err_info.error_id); |
|
if (err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) { |
|
wakeup.rfkill_release = true; |
|
ieee80211_report_wowlan_wakeup(vif, &wakeup, |
|
GFP_KERNEL); |
|
} |
|
goto out_unlock; |
|
} |
|
|
|
#ifdef CONFIG_IWLWIFI_DEBUGFS |
|
img = &priv->fw->img[IWL_UCODE_WOWLAN]; |
|
if (!priv->wowlan_sram) |
|
priv->wowlan_sram = |
|
kzalloc(img->sec[IWL_UCODE_SECTION_DATA].len, |
|
GFP_KERNEL); |
|
|
|
if (priv->wowlan_sram) |
|
iwl_trans_read_mem(priv->trans, 0x800000, |
|
priv->wowlan_sram, |
|
img->sec[IWL_UCODE_SECTION_DATA].len / 4); |
|
#endif |
|
|
|
/* |
|
* This is very strange. The GET_STATUS command is sent but the device |
|
* doesn't reply properly, it seems it doesn't close the RBD so one is |
|
* always left open ... As a result, we need to send another command |
|
* and have to reset the driver afterwards. As we need to switch to |
|
* runtime firmware again that'll happen. |
|
*/ |
|
|
|
iwl_init_notification_wait(&priv->notif_wait, &status_wait, status_cmd, |
|
ARRAY_SIZE(status_cmd), iwl_resume_status_fn, |
|
&resume_data); |
|
|
|
iwl_dvm_send_cmd_pdu(priv, REPLY_WOWLAN_GET_STATUS, CMD_ASYNC, 0, NULL); |
|
iwl_dvm_send_cmd_pdu(priv, REPLY_ECHO, CMD_ASYNC, 0, NULL); |
|
/* an RBD is left open in the firmware now! */ |
|
|
|
ret = iwl_wait_notification(&priv->notif_wait, &status_wait, HZ/5); |
|
if (ret) |
|
goto out_unlock; |
|
|
|
if (resume_data.valid && priv->contexts[IWL_RXON_CTX_BSS].vif) { |
|
u32 reasons = le32_to_cpu(status_data.wakeup_reason); |
|
struct cfg80211_wowlan_wakeup *wakeup_report; |
|
|
|
IWL_INFO(priv, "WoWLAN wakeup reason(s): 0x%.8x\n", reasons); |
|
|
|
if (reasons) { |
|
if (reasons & IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET) |
|
wakeup.magic_pkt = true; |
|
if (reasons & IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH) |
|
wakeup.pattern_idx = status_data.pattern_number; |
|
if (reasons & (IWLAGN_WOWLAN_WAKEUP_BEACON_MISS | |
|
IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE)) |
|
wakeup.disconnect = true; |
|
if (reasons & IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL) |
|
wakeup.gtk_rekey_failure = true; |
|
if (reasons & IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ) |
|
wakeup.eap_identity_req = true; |
|
if (reasons & IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE) |
|
wakeup.four_way_handshake = true; |
|
wakeup_report = &wakeup; |
|
} else { |
|
wakeup_report = NULL; |
|
} |
|
|
|
ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); |
|
} |
|
|
|
priv->wowlan = false; |
|
|
|
iwlagn_prepare_restart(priv); |
|
|
|
memset((void *)&ctx->active, 0, sizeof(ctx->active)); |
|
iwl_connection_init_rx_config(priv, ctx); |
|
iwlagn_set_rxon_chain(priv, ctx); |
|
|
|
out_unlock: |
|
mutex_unlock(&priv->mutex); |
|
IWL_DEBUG_MAC80211(priv, "leave\n"); |
|
|
|
ieee80211_resume_disconnect(vif); |
|
|
|
return 1; |
|
} |
|
|
|
static void iwlagn_mac_set_wakeup(struct ieee80211_hw *hw, bool enabled) |
|
{ |
|
struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
|
|
|
device_set_wakeup_enable(priv->trans->dev, enabled); |
|
} |
|
#endif |
|
|
|
static void iwlagn_mac_tx(struct ieee80211_hw *hw, |
|
struct ieee80211_tx_control *control, |
|
struct sk_buff *skb) |
|
{ |
|
struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
|
|
|
if (iwlagn_tx_skb(priv, control->sta, skb)) |
|
ieee80211_free_txskb(hw, skb); |
|
} |
|
|
|
static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, |
|
struct ieee80211_key_conf *keyconf, |
|
struct ieee80211_sta *sta, |
|
u32 iv32, u16 *phase1key) |
|
{ |
|
struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
|
|
|
iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key); |
|
} |
|
|
|
static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, |
|
struct ieee80211_vif *vif, |
|
struct ieee80211_sta *sta, |
|
struct ieee80211_key_conf *key) |
|
{ |
|
struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
|
struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; |
|
struct iwl_rxon_context *ctx = vif_priv->ctx; |
|
int ret; |
|
bool is_default_wep_key = false; |
|
|
|
IWL_DEBUG_MAC80211(priv, "enter\n"); |
|
|
|
if (iwlwifi_mod_params.swcrypto) { |
|
IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n"); |
|
return -EOPNOTSUPP; |
|
} |
|
|
|
switch (key->cipher) { |
|
case WLAN_CIPHER_SUITE_TKIP: |
|
key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; |
|
fallthrough; |
|
case WLAN_CIPHER_SUITE_CCMP: |
|
key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; |
|
break; |
|
default: |
|
break; |
|
} |
|
|
|
/* |
|
* We could program these keys into the hardware as well, but we |
|
* don't expect much multicast traffic in IBSS and having keys |
|
* for more stations is probably more useful. |
|
* |
|
* Mark key TX-only and return 0. |
|
*/ |
|
if (vif->type == NL80211_IFTYPE_ADHOC && |
|
!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { |
|
key->hw_key_idx = WEP_INVALID_OFFSET; |
|
return 0; |
|
} |
|
|
|
/* If they key was TX-only, accept deletion */ |
|
if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET) |
|
return 0; |
|
|
|
mutex_lock(&priv->mutex); |
|
iwl_scan_cancel_timeout(priv, 100); |
|
|
|
BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT); |
|
|
|
/* |
|
* If we are getting WEP group key and we didn't receive any key mapping |
|
* so far, we are in legacy wep mode (group key only), otherwise we are |
|
* in 1X mode. |
|
* In legacy wep mode, we use another host command to the uCode. |
|
*/ |
|
if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 || |
|
key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) { |
|
if (cmd == SET_KEY) |
|
is_default_wep_key = !ctx->key_mapping_keys; |
|
else |
|
is_default_wep_key = |
|
key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT; |
|
} |
|
|
|
|
|
switch (cmd) { |
|
case SET_KEY: |
|
if (is_default_wep_key) { |
|
ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key); |
|
break; |
|
} |
|
ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta); |
|
if (ret) { |
|
/* |
|
* can't add key for RX, but we don't need it |
|
* in the device for TX so still return 0 |
|
*/ |
|
ret = 0; |
|
key->hw_key_idx = WEP_INVALID_OFFSET; |
|
} |
|
|
|
IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n"); |
|
break; |
|
case DISABLE_KEY: |
|
if (is_default_wep_key) |
|
ret = iwl_remove_default_wep_key(priv, ctx, key); |
|
else |
|
ret = iwl_remove_dynamic_key(priv, ctx, key, sta); |
|
|
|
IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n"); |
|
break; |
|
default: |
|
ret = -EINVAL; |
|
} |
|
|
|
mutex_unlock(&priv->mutex); |
|
IWL_DEBUG_MAC80211(priv, "leave\n"); |
|
|
|
return ret; |
|
} |
|
|
|
static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, |
|
struct ieee80211_ampdu_params *params) |
|
{ |
|
struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
|
int ret = -EINVAL; |
|
struct ieee80211_sta *sta = params->sta; |
|
enum ieee80211_ampdu_mlme_action action = params->action; |
|
u16 tid = params->tid; |
|
u16 *ssn = ¶ms->ssn; |
|
u8 buf_size = params->buf_size; |
|
struct iwl_station_priv *sta_priv = (void *) sta->drv_priv; |
|
|
|
IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n", |
|
sta->addr, tid); |
|
|
|
if (!(priv->nvm_data->sku_cap_11n_enable)) |
|
return -EACCES; |
|
|
|
IWL_DEBUG_MAC80211(priv, "enter\n"); |
|
mutex_lock(&priv->mutex); |
|
|
|
switch (action) { |
|
case IEEE80211_AMPDU_RX_START: |
|
if (!iwl_enable_rx_ampdu()) |
|
break; |
|
IWL_DEBUG_HT(priv, "start Rx\n"); |
|
ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn); |
|
break; |
|
case IEEE80211_AMPDU_RX_STOP: |
|
IWL_DEBUG_HT(priv, "stop Rx\n"); |
|
ret = iwl_sta_rx_agg_stop(priv, sta, tid); |
|
break; |
|
case IEEE80211_AMPDU_TX_START: |
|
if (!priv->trans->ops->txq_enable) |
|
break; |
|
if (!iwl_enable_tx_ampdu()) |
|
break; |
|
IWL_DEBUG_HT(priv, "start Tx\n"); |
|
ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn); |
|
break; |
|
case IEEE80211_AMPDU_TX_STOP_FLUSH: |
|
case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: |
|
IWL_DEBUG_HT(priv, "Flush Tx\n"); |
|
ret = iwlagn_tx_agg_flush(priv, vif, sta, tid); |
|
break; |
|
case IEEE80211_AMPDU_TX_STOP_CONT: |
|
IWL_DEBUG_HT(priv, "stop Tx\n"); |
|
ret = iwlagn_tx_agg_stop(priv, vif, sta, tid); |
|
if ((ret == 0) && (priv->agg_tids_count > 0)) { |
|
priv->agg_tids_count--; |
|
IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n", |
|
priv->agg_tids_count); |
|
} |
|
if (!priv->agg_tids_count && |
|
priv->hw_params.use_rts_for_aggregation) { |
|
/* |
|
* switch off RTS/CTS if it was previously enabled |
|
*/ |
|
sta_priv->lq_sta.lq.general_params.flags &= |
|
~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK; |
|
iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif), |
|
&sta_priv->lq_sta.lq, CMD_ASYNC, false); |
|
} |
|
break; |
|
case IEEE80211_AMPDU_TX_OPERATIONAL: |
|
ret = iwlagn_tx_agg_oper(priv, vif, sta, tid, buf_size); |
|
break; |
|
} |
|
mutex_unlock(&priv->mutex); |
|
IWL_DEBUG_MAC80211(priv, "leave\n"); |
|
return ret; |
|
} |
|
|
|
static int iwlagn_mac_sta_add(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, |
|
struct ieee80211_sta *sta) |
|
{ |
|
struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
|
struct iwl_station_priv *sta_priv = (void *)sta->drv_priv; |
|
struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; |
|
bool is_ap = vif->type == NL80211_IFTYPE_STATION; |
|
int ret; |
|
u8 sta_id; |
|
|
|
IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n", |
|
sta->addr); |
|
sta_priv->sta_id = IWL_INVALID_STATION; |
|
|
|
atomic_set(&sta_priv->pending_frames, 0); |
|
if (vif->type == NL80211_IFTYPE_AP) |
|
sta_priv->client = true; |
|
|
|
ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr, |
|
is_ap, sta, &sta_id); |
|
if (ret) { |
|
IWL_ERR(priv, "Unable to add station %pM (%d)\n", |
|
sta->addr, ret); |
|
/* Should we return success if return code is EEXIST ? */ |
|
return ret; |
|
} |
|
|
|
sta_priv->sta_id = sta_id; |
|
|
|
return 0; |
|
} |
|
|
|
static int iwlagn_mac_sta_remove(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, |
|
struct ieee80211_sta *sta) |
|
{ |
|
struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
|
struct iwl_station_priv *sta_priv = (void *)sta->drv_priv; |
|
int ret; |
|
|
|
IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n", sta->addr); |
|
|
|
if (vif->type == NL80211_IFTYPE_STATION) { |
|
/* |
|
* Station will be removed from device when the RXON |
|
* is set to unassociated -- just deactivate it here |
|
* to avoid re-programming it. |
|
*/ |
|
ret = 0; |
|
iwl_deactivate_station(priv, sta_priv->sta_id, sta->addr); |
|
} else { |
|
ret = iwl_remove_station(priv, sta_priv->sta_id, sta->addr); |
|
if (ret) |
|
IWL_DEBUG_QUIET_RFKILL(priv, |
|
"Error removing station %pM\n", sta->addr); |
|
} |
|
return ret; |
|
} |
|
|
|
static int iwlagn_mac_sta_state(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, |
|
struct ieee80211_sta *sta, |
|
enum ieee80211_sta_state old_state, |
|
enum ieee80211_sta_state new_state) |
|
{ |
|
struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
|
struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; |
|
enum { |
|
NONE, ADD, REMOVE, HT_RATE_INIT, ADD_RATE_INIT, |
|
} op = NONE; |
|
int ret; |
|
|
|
IWL_DEBUG_MAC80211(priv, "station %pM state change %d->%d\n", |
|
sta->addr, old_state, new_state); |
|
|
|
mutex_lock(&priv->mutex); |
|
if (vif->type == NL80211_IFTYPE_STATION) { |
|
if (old_state == IEEE80211_STA_NOTEXIST && |
|
new_state == IEEE80211_STA_NONE) |
|
op = ADD; |
|
else if (old_state == IEEE80211_STA_NONE && |
|
new_state == IEEE80211_STA_NOTEXIST) |
|
op = REMOVE; |
|
else if (old_state == IEEE80211_STA_AUTH && |
|
new_state == IEEE80211_STA_ASSOC) |
|
op = HT_RATE_INIT; |
|
} else { |
|
if (old_state == IEEE80211_STA_AUTH && |
|
new_state == IEEE80211_STA_ASSOC) |
|
op = ADD_RATE_INIT; |
|
else if (old_state == IEEE80211_STA_ASSOC && |
|
new_state == IEEE80211_STA_AUTH) |
|
op = REMOVE; |
|
} |
|
|
|
switch (op) { |
|
case ADD: |
|
ret = iwlagn_mac_sta_add(hw, vif, sta); |
|
if (ret) |
|
break; |
|
/* |
|
* Clear the in-progress flag, the AP station entry was added |
|
* but we'll initialize LQ only when we've associated (which |
|
* would also clear the in-progress flag). This is necessary |
|
* in case we never initialize LQ because association fails. |
|
*/ |
|
spin_lock_bh(&priv->sta_lock); |
|
priv->stations[iwl_sta_id(sta)].used &= |
|
~IWL_STA_UCODE_INPROGRESS; |
|
spin_unlock_bh(&priv->sta_lock); |
|
break; |
|
case REMOVE: |
|
ret = iwlagn_mac_sta_remove(hw, vif, sta); |
|
break; |
|
case ADD_RATE_INIT: |
|
ret = iwlagn_mac_sta_add(hw, vif, sta); |
|
if (ret) |
|
break; |
|
/* Initialize rate scaling */ |
|
IWL_DEBUG_INFO(priv, |
|
"Initializing rate scaling for station %pM\n", |
|
sta->addr); |
|
iwl_rs_rate_init(priv, sta, iwl_sta_id(sta)); |
|
ret = 0; |
|
break; |
|
case HT_RATE_INIT: |
|
/* Initialize rate scaling */ |
|
ret = iwl_sta_update_ht(priv, vif_priv->ctx, sta); |
|
if (ret) |
|
break; |
|
IWL_DEBUG_INFO(priv, |
|
"Initializing rate scaling for station %pM\n", |
|
sta->addr); |
|
iwl_rs_rate_init(priv, sta, iwl_sta_id(sta)); |
|
ret = 0; |
|
break; |
|
default: |
|
ret = 0; |
|
break; |
|
} |
|
|
|
/* |
|
* mac80211 might WARN if we fail, but due the way we |
|
* (badly) handle hard rfkill, we might fail here |
|
*/ |
|
if (iwl_is_rfkill(priv)) |
|
ret = 0; |
|
|
|
mutex_unlock(&priv->mutex); |
|
IWL_DEBUG_MAC80211(priv, "leave\n"); |
|
|
|
return ret; |
|
} |
|
|
|
static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, |
|
struct ieee80211_channel_switch *ch_switch) |
|
{ |
|
struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
|
struct ieee80211_conf *conf = &hw->conf; |
|
struct ieee80211_channel *channel = ch_switch->chandef.chan; |
|
struct iwl_ht_config *ht_conf = &priv->current_ht_config; |
|
/* |
|
* MULTI-FIXME |
|
* When we add support for multiple interfaces, we need to |
|
* revisit this. The channel switch command in the device |
|
* only affects the BSS context, but what does that really |
|
* mean? And what if we get a CSA on the second interface? |
|
* This needs a lot of work. |
|
*/ |
|
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
|
u16 ch; |
|
|
|
IWL_DEBUG_MAC80211(priv, "enter\n"); |
|
|
|
mutex_lock(&priv->mutex); |
|
|
|
if (iwl_is_rfkill(priv)) |
|
goto out; |
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status) || |
|
test_bit(STATUS_SCANNING, &priv->status) || |
|
test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status)) |
|
goto out; |
|
|
|
if (!iwl_is_associated_ctx(ctx)) |
|
goto out; |
|
|
|
if (!priv->lib->set_channel_switch) |
|
goto out; |
|
|
|
ch = channel->hw_value; |
|
if (le16_to_cpu(ctx->active.channel) == ch) |
|
goto out; |
|
|
|
priv->current_ht_config.smps = conf->smps_mode; |
|
|
|
/* Configure HT40 channels */ |
|
switch (cfg80211_get_chandef_type(&ch_switch->chandef)) { |
|
case NL80211_CHAN_NO_HT: |
|
case NL80211_CHAN_HT20: |
|
ctx->ht.is_40mhz = false; |
|
ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE; |
|
break; |
|
case NL80211_CHAN_HT40MINUS: |
|
ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW; |
|
ctx->ht.is_40mhz = true; |
|
break; |
|
case NL80211_CHAN_HT40PLUS: |
|
ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; |
|
ctx->ht.is_40mhz = true; |
|
break; |
|
} |
|
|
|
if ((le16_to_cpu(ctx->staging.channel) != ch)) |
|
ctx->staging.flags = 0; |
|
|
|
iwl_set_rxon_channel(priv, channel, ctx); |
|
iwl_set_rxon_ht(priv, ht_conf); |
|
iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif); |
|
|
|
/* |
|
* at this point, staging_rxon has the |
|
* configuration for channel switch |
|
*/ |
|
set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status); |
|
priv->switch_channel = cpu_to_le16(ch); |
|
if (priv->lib->set_channel_switch(priv, ch_switch)) { |
|
clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status); |
|
priv->switch_channel = 0; |
|
ieee80211_chswitch_done(ctx->vif, false); |
|
} |
|
|
|
out: |
|
mutex_unlock(&priv->mutex); |
|
IWL_DEBUG_MAC80211(priv, "leave\n"); |
|
} |
|
|
|
void iwl_chswitch_done(struct iwl_priv *priv, bool is_success) |
|
{ |
|
/* |
|
* MULTI-FIXME |
|
* See iwlagn_mac_channel_switch. |
|
*/ |
|
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
|
return; |
|
|
|
if (!test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status)) |
|
return; |
|
|
|
if (ctx->vif) |
|
ieee80211_chswitch_done(ctx->vif, is_success); |
|
} |
|
|
|
static void iwlagn_configure_filter(struct ieee80211_hw *hw, |
|
unsigned int changed_flags, |
|
unsigned int *total_flags, |
|
u64 multicast) |
|
{ |
|
struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
|
__le32 filter_or = 0, filter_nand = 0; |
|
struct iwl_rxon_context *ctx; |
|
|
|
#define CHK(test, flag) do { \ |
|
if (*total_flags & (test)) \ |
|
filter_or |= (flag); \ |
|
else \ |
|
filter_nand |= (flag); \ |
|
} while (0) |
|
|
|
IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n", |
|
changed_flags, *total_flags); |
|
|
|
CHK(FIF_OTHER_BSS, RXON_FILTER_PROMISC_MSK); |
|
/* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */ |
|
CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK); |
|
CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK); |
|
|
|
#undef CHK |
|
|
|
mutex_lock(&priv->mutex); |
|
|
|
for_each_context(priv, ctx) { |
|
ctx->staging.filter_flags &= ~filter_nand; |
|
ctx->staging.filter_flags |= filter_or; |
|
|
|
/* |
|
* Not committing directly because hardware can perform a scan, |
|
* but we'll eventually commit the filter flags change anyway. |
|
*/ |
|
} |
|
|
|
mutex_unlock(&priv->mutex); |
|
|
|
/* |
|
* Receiving all multicast frames is always enabled by the |
|
* default flags setup in iwl_connection_init_rx_config() |
|
* since we currently do not support programming multicast |
|
* filters into the device. |
|
*/ |
|
*total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | |
|
FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL; |
|
} |
|
|
|
static void iwlagn_mac_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
|
u32 queues, bool drop) |
|
{ |
|
struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
|
u32 scd_queues; |
|
|
|
mutex_lock(&priv->mutex); |
|
IWL_DEBUG_MAC80211(priv, "enter\n"); |
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status)) { |
|
IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n"); |
|
goto done; |
|
} |
|
if (iwl_is_rfkill(priv)) { |
|
IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n"); |
|
goto done; |
|
} |
|
|
|
scd_queues = BIT(priv->trans->trans_cfg->base_params->num_of_queues) - 1; |
|
scd_queues &= ~(BIT(IWL_IPAN_CMD_QUEUE_NUM) | |
|
BIT(IWL_DEFAULT_CMD_QUEUE_NUM)); |
|
|
|
if (drop) { |
|
IWL_DEBUG_TX_QUEUES(priv, "Flushing SCD queues: 0x%x\n", |
|
scd_queues); |
|
if (iwlagn_txfifo_flush(priv, scd_queues)) { |
|
IWL_ERR(priv, "flush request fail\n"); |
|
goto done; |
|
} |
|
} |
|
|
|
IWL_DEBUG_TX_QUEUES(priv, "wait transmit/flush all frames\n"); |
|
iwl_trans_wait_tx_queues_empty(priv->trans, scd_queues); |
|
done: |
|
mutex_unlock(&priv->mutex); |
|
IWL_DEBUG_MAC80211(priv, "leave\n"); |
|
} |
|
|
|
static void iwlagn_mac_event_callback(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, |
|
const struct ieee80211_event *event) |
|
{ |
|
struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
|
|
|
if (event->type != RSSI_EVENT) |
|
return; |
|
|
|
IWL_DEBUG_MAC80211(priv, "enter\n"); |
|
|
|
if (priv->lib->bt_params && |
|
priv->lib->bt_params->advanced_bt_coexist) { |
|
if (event->u.rssi.data == RSSI_EVENT_LOW) |
|
priv->bt_enable_pspoll = true; |
|
else if (event->u.rssi.data == RSSI_EVENT_HIGH) |
|
priv->bt_enable_pspoll = false; |
|
|
|
queue_work(priv->workqueue, &priv->bt_runtime_config); |
|
} else { |
|
IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled," |
|
"ignoring RSSI callback\n"); |
|
} |
|
|
|
IWL_DEBUG_MAC80211(priv, "leave\n"); |
|
} |
|
|
|
static int iwlagn_mac_set_tim(struct ieee80211_hw *hw, |
|
struct ieee80211_sta *sta, bool set) |
|
{ |
|
struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
|
|
|
queue_work(priv->workqueue, &priv->beacon_update); |
|
|
|
return 0; |
|
} |
|
|
|
static int iwlagn_mac_conf_tx(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, u16 queue, |
|
const struct ieee80211_tx_queue_params *params) |
|
{ |
|
struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
|
struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; |
|
struct iwl_rxon_context *ctx = vif_priv->ctx; |
|
int q; |
|
|
|
if (WARN_ON(!ctx)) |
|
return -EINVAL; |
|
|
|
IWL_DEBUG_MAC80211(priv, "enter\n"); |
|
|
|
if (!iwl_is_ready_rf(priv)) { |
|
IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n"); |
|
return -EIO; |
|
} |
|
|
|
if (queue >= AC_NUM) { |
|
IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue); |
|
return 0; |
|
} |
|
|
|
q = AC_NUM - 1 - queue; |
|
|
|
mutex_lock(&priv->mutex); |
|
|
|
ctx->qos_data.def_qos_parm.ac[q].cw_min = |
|
cpu_to_le16(params->cw_min); |
|
ctx->qos_data.def_qos_parm.ac[q].cw_max = |
|
cpu_to_le16(params->cw_max); |
|
ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs; |
|
ctx->qos_data.def_qos_parm.ac[q].edca_txop = |
|
cpu_to_le16((params->txop * 32)); |
|
|
|
ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0; |
|
|
|
mutex_unlock(&priv->mutex); |
|
|
|
IWL_DEBUG_MAC80211(priv, "leave\n"); |
|
return 0; |
|
} |
|
|
|
static int iwlagn_mac_tx_last_beacon(struct ieee80211_hw *hw) |
|
{ |
|
struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
|
|
|
return priv->ibss_manager == IWL_IBSS_MANAGER; |
|
} |
|
|
|
static int iwl_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx) |
|
{ |
|
iwl_connection_init_rx_config(priv, ctx); |
|
|
|
iwlagn_set_rxon_chain(priv, ctx); |
|
|
|
return iwlagn_commit_rxon(priv, ctx); |
|
} |
|
|
|
static int iwl_setup_interface(struct iwl_priv *priv, |
|
struct iwl_rxon_context *ctx) |
|
{ |
|
struct ieee80211_vif *vif = ctx->vif; |
|
int err, ac; |
|
|
|
lockdep_assert_held(&priv->mutex); |
|
|
|
/* |
|
* This variable will be correct only when there's just |
|
* a single context, but all code using it is for hardware |
|
* that supports only one context. |
|
*/ |
|
priv->iw_mode = vif->type; |
|
|
|
ctx->is_active = true; |
|
|
|
err = iwl_set_mode(priv, ctx); |
|
if (err) { |
|
if (!ctx->always_active) |
|
ctx->is_active = false; |
|
return err; |
|
} |
|
|
|
if (priv->lib->bt_params && priv->lib->bt_params->advanced_bt_coexist && |
|
vif->type == NL80211_IFTYPE_ADHOC) { |
|
/* |
|
* pretend to have high BT traffic as long as we |
|
* are operating in IBSS mode, as this will cause |
|
* the rate scaling etc. to behave as intended. |
|
*/ |
|
priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH; |
|
} |
|
|
|
/* set up queue mappings */ |
|
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) |
|
vif->hw_queue[ac] = ctx->ac_to_queue[ac]; |
|
|
|
if (vif->type == NL80211_IFTYPE_AP) |
|
vif->cab_queue = ctx->mcast_queue; |
|
else |
|
vif->cab_queue = IEEE80211_INVAL_HW_QUEUE; |
|
|
|
return 0; |
|
} |
|
|
|
static int iwlagn_mac_add_interface(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif) |
|
{ |
|
struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
|
struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; |
|
struct iwl_rxon_context *tmp, *ctx = NULL; |
|
int err; |
|
enum nl80211_iftype viftype = ieee80211_vif_type_p2p(vif); |
|
bool reset = false; |
|
|
|
IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n", |
|
viftype, vif->addr); |
|
|
|
mutex_lock(&priv->mutex); |
|
|
|
if (!iwl_is_ready_rf(priv)) { |
|
IWL_WARN(priv, "Try to add interface when device not ready\n"); |
|
err = -EINVAL; |
|
goto out; |
|
} |
|
|
|
for_each_context(priv, tmp) { |
|
u32 possible_modes = |
|
tmp->interface_modes | tmp->exclusive_interface_modes; |
|
|
|
if (tmp->vif) { |
|
/* On reset we need to add the same interface again */ |
|
if (tmp->vif == vif) { |
|
reset = true; |
|
ctx = tmp; |
|
break; |
|
} |
|
|
|
/* check if this busy context is exclusive */ |
|
if (tmp->exclusive_interface_modes & |
|
BIT(tmp->vif->type)) { |
|
err = -EINVAL; |
|
goto out; |
|
} |
|
continue; |
|
} |
|
|
|
if (!(possible_modes & BIT(viftype))) |
|
continue; |
|
|
|
/* have maybe usable context w/o interface */ |
|
ctx = tmp; |
|
break; |
|
} |
|
|
|
if (!ctx) { |
|
err = -EOPNOTSUPP; |
|
goto out; |
|
} |
|
|
|
vif_priv->ctx = ctx; |
|
ctx->vif = vif; |
|
|
|
/* |
|
* In SNIFFER device type, the firmware reports the FCS to |
|
* the host, rather than snipping it off. Unfortunately, |
|
* mac80211 doesn't (yet) provide a per-packet flag for |
|
* this, so that we have to set the hardware flag based |
|
* on the interfaces added. As the monitor interface can |
|
* only be present by itself, and will be removed before |
|
* other interfaces are added, this is safe. |
|
*/ |
|
if (vif->type == NL80211_IFTYPE_MONITOR) |
|
ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS); |
|
else |
|
__clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, priv->hw->flags); |
|
|
|
err = iwl_setup_interface(priv, ctx); |
|
if (!err || reset) |
|
goto out; |
|
|
|
ctx->vif = NULL; |
|
priv->iw_mode = NL80211_IFTYPE_STATION; |
|
out: |
|
mutex_unlock(&priv->mutex); |
|
|
|
IWL_DEBUG_MAC80211(priv, "leave\n"); |
|
return err; |
|
} |
|
|
|
static void iwl_teardown_interface(struct iwl_priv *priv, |
|
struct ieee80211_vif *vif, |
|
bool mode_change) |
|
{ |
|
struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); |
|
|
|
lockdep_assert_held(&priv->mutex); |
|
|
|
if (priv->scan_vif == vif) { |
|
iwl_scan_cancel_timeout(priv, 200); |
|
iwl_force_scan_end(priv); |
|
} |
|
|
|
if (!mode_change) { |
|
iwl_set_mode(priv, ctx); |
|
if (!ctx->always_active) |
|
ctx->is_active = false; |
|
} |
|
|
|
/* |
|
* When removing the IBSS interface, overwrite the |
|
* BT traffic load with the stored one from the last |
|
* notification, if any. If this is a device that |
|
* doesn't implement this, this has no effect since |
|
* both values are the same and zero. |
|
*/ |
|
if (vif->type == NL80211_IFTYPE_ADHOC) |
|
priv->bt_traffic_load = priv->last_bt_traffic_load; |
|
} |
|
|
|
static void iwlagn_mac_remove_interface(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif) |
|
{ |
|
struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
|
struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); |
|
|
|
IWL_DEBUG_MAC80211(priv, "enter\n"); |
|
|
|
mutex_lock(&priv->mutex); |
|
|
|
WARN_ON(ctx->vif != vif); |
|
ctx->vif = NULL; |
|
|
|
iwl_teardown_interface(priv, vif, false); |
|
|
|
mutex_unlock(&priv->mutex); |
|
|
|
IWL_DEBUG_MAC80211(priv, "leave\n"); |
|
|
|
} |
|
|
|
static int iwlagn_mac_change_interface(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, |
|
enum nl80211_iftype newtype, bool newp2p) |
|
{ |
|
struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
|
struct iwl_rxon_context *ctx, *tmp; |
|
enum nl80211_iftype newviftype = newtype; |
|
u32 interface_modes; |
|
int err; |
|
|
|
IWL_DEBUG_MAC80211(priv, "enter\n"); |
|
|
|
newtype = ieee80211_iftype_p2p(newtype, newp2p); |
|
|
|
mutex_lock(&priv->mutex); |
|
|
|
ctx = iwl_rxon_ctx_from_vif(vif); |
|
|
|
/* |
|
* To simplify this code, only support changes on the |
|
* BSS context. The PAN context is usually reassigned |
|
* by creating/removing P2P interfaces anyway. |
|
*/ |
|
if (ctx->ctxid != IWL_RXON_CTX_BSS) { |
|
err = -EBUSY; |
|
goto out; |
|
} |
|
|
|
if (!ctx->vif || !iwl_is_ready_rf(priv)) { |
|
/* |
|
* Huh? But wait ... this can maybe happen when |
|
* we're in the middle of a firmware restart! |
|
*/ |
|
err = -EBUSY; |
|
goto out; |
|
} |
|
|
|
/* Check if the switch is supported in the same context */ |
|
interface_modes = ctx->interface_modes | ctx->exclusive_interface_modes; |
|
if (!(interface_modes & BIT(newtype))) { |
|
err = -EBUSY; |
|
goto out; |
|
} |
|
|
|
if (ctx->exclusive_interface_modes & BIT(newtype)) { |
|
for_each_context(priv, tmp) { |
|
if (ctx == tmp) |
|
continue; |
|
|
|
if (!tmp->is_active) |
|
continue; |
|
|
|
/* |
|
* The current mode switch would be exclusive, but |
|
* another context is active ... refuse the switch. |
|
*/ |
|
err = -EBUSY; |
|
goto out; |
|
} |
|
} |
|
|
|
/* success */ |
|
iwl_teardown_interface(priv, vif, true); |
|
vif->type = newviftype; |
|
vif->p2p = newp2p; |
|
err = iwl_setup_interface(priv, ctx); |
|
WARN_ON(err); |
|
/* |
|
* We've switched internally, but submitting to the |
|
* device may have failed for some reason. Mask this |
|
* error, because otherwise mac80211 will not switch |
|
* (and set the interface type back) and we'll be |
|
* out of sync with it. |
|
*/ |
|
err = 0; |
|
|
|
out: |
|
mutex_unlock(&priv->mutex); |
|
IWL_DEBUG_MAC80211(priv, "leave\n"); |
|
|
|
return err; |
|
} |
|
|
|
static int iwlagn_mac_hw_scan(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, |
|
struct ieee80211_scan_request *hw_req) |
|
{ |
|
struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
|
struct cfg80211_scan_request *req = &hw_req->req; |
|
int ret; |
|
|
|
IWL_DEBUG_MAC80211(priv, "enter\n"); |
|
|
|
if (req->n_channels == 0) |
|
return -EINVAL; |
|
|
|
mutex_lock(&priv->mutex); |
|
|
|
/* |
|
* If an internal scan is in progress, just set |
|
* up the scan_request as per above. |
|
*/ |
|
if (priv->scan_type != IWL_SCAN_NORMAL) { |
|
IWL_DEBUG_SCAN(priv, |
|
"SCAN request during internal scan - defer\n"); |
|
priv->scan_request = req; |
|
priv->scan_vif = vif; |
|
ret = 0; |
|
} else { |
|
priv->scan_request = req; |
|
priv->scan_vif = vif; |
|
/* |
|
* mac80211 will only ask for one band at a time |
|
* so using channels[0] here is ok |
|
*/ |
|
ret = iwl_scan_initiate(priv, vif, IWL_SCAN_NORMAL, |
|
req->channels[0]->band); |
|
if (ret) { |
|
priv->scan_request = NULL; |
|
priv->scan_vif = NULL; |
|
} |
|
} |
|
|
|
IWL_DEBUG_MAC80211(priv, "leave\n"); |
|
|
|
mutex_unlock(&priv->mutex); |
|
|
|
return ret; |
|
} |
|
|
|
static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id) |
|
{ |
|
struct iwl_addsta_cmd cmd = { |
|
.mode = STA_CONTROL_MODIFY_MSK, |
|
.station_flags_msk = STA_FLG_PWR_SAVE_MSK, |
|
.sta.sta_id = sta_id, |
|
}; |
|
|
|
iwl_send_add_sta(priv, &cmd, CMD_ASYNC); |
|
} |
|
|
|
static void iwlagn_mac_sta_notify(struct ieee80211_hw *hw, |
|
struct ieee80211_vif *vif, |
|
enum sta_notify_cmd cmd, |
|
struct ieee80211_sta *sta) |
|
{ |
|
struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
|
struct iwl_station_priv *sta_priv = (void *)sta->drv_priv; |
|
int sta_id; |
|
|
|
IWL_DEBUG_MAC80211(priv, "enter\n"); |
|
|
|
switch (cmd) { |
|
case STA_NOTIFY_SLEEP: |
|
WARN_ON(!sta_priv->client); |
|
sta_priv->asleep = true; |
|
if (atomic_read(&sta_priv->pending_frames) > 0) |
|
ieee80211_sta_block_awake(hw, sta, true); |
|
break; |
|
case STA_NOTIFY_AWAKE: |
|
WARN_ON(!sta_priv->client); |
|
if (!sta_priv->asleep) |
|
break; |
|
sta_priv->asleep = false; |
|
sta_id = iwl_sta_id(sta); |
|
if (sta_id != IWL_INVALID_STATION) |
|
iwl_sta_modify_ps_wake(priv, sta_id); |
|
break; |
|
default: |
|
break; |
|
} |
|
IWL_DEBUG_MAC80211(priv, "leave\n"); |
|
} |
|
|
|
const struct ieee80211_ops iwlagn_hw_ops = { |
|
.tx = iwlagn_mac_tx, |
|
.start = iwlagn_mac_start, |
|
.stop = iwlagn_mac_stop, |
|
#ifdef CONFIG_PM_SLEEP |
|
.suspend = iwlagn_mac_suspend, |
|
.resume = iwlagn_mac_resume, |
|
.set_wakeup = iwlagn_mac_set_wakeup, |
|
#endif |
|
.add_interface = iwlagn_mac_add_interface, |
|
.remove_interface = iwlagn_mac_remove_interface, |
|
.change_interface = iwlagn_mac_change_interface, |
|
.config = iwlagn_mac_config, |
|
.configure_filter = iwlagn_configure_filter, |
|
.set_key = iwlagn_mac_set_key, |
|
.update_tkip_key = iwlagn_mac_update_tkip_key, |
|
.set_rekey_data = iwlagn_mac_set_rekey_data, |
|
.conf_tx = iwlagn_mac_conf_tx, |
|
.bss_info_changed = iwlagn_bss_info_changed, |
|
.ampdu_action = iwlagn_mac_ampdu_action, |
|
.hw_scan = iwlagn_mac_hw_scan, |
|
.sta_notify = iwlagn_mac_sta_notify, |
|
.sta_state = iwlagn_mac_sta_state, |
|
.channel_switch = iwlagn_mac_channel_switch, |
|
.flush = iwlagn_mac_flush, |
|
.tx_last_beacon = iwlagn_mac_tx_last_beacon, |
|
.event_callback = iwlagn_mac_event_callback, |
|
.set_tim = iwlagn_mac_set_tim, |
|
}; |
|
|
|
/* This function both allocates and initializes hw and priv. */ |
|
struct ieee80211_hw *iwl_alloc_all(void) |
|
{ |
|
struct iwl_priv *priv; |
|
struct iwl_op_mode *op_mode; |
|
/* mac80211 allocates memory for this device instance, including |
|
* space for this driver's private structure */ |
|
struct ieee80211_hw *hw; |
|
|
|
hw = ieee80211_alloc_hw(sizeof(struct iwl_priv) + |
|
sizeof(struct iwl_op_mode), &iwlagn_hw_ops); |
|
if (!hw) |
|
goto out; |
|
|
|
op_mode = hw->priv; |
|
priv = IWL_OP_MODE_GET_DVM(op_mode); |
|
priv->hw = hw; |
|
|
|
out: |
|
return hw; |
|
}
|
|
|