diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/dvm/mac80211.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/dvm/mac80211.c | 1655 |
1 files changed, 0 insertions, 1655 deletions
diff --git a/drivers/net/wireless/iwlwifi/dvm/mac80211.c b/drivers/net/wireless/iwlwifi/dvm/mac80211.c deleted file mode 100644 index b3ad34e8bf5a..000000000000 --- a/drivers/net/wireless/iwlwifi/dvm/mac80211.c +++ /dev/null @@ -1,1655 +0,0 @@ -/****************************************************************************** - * - * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved. - * - * Portions of this file are derived from the ipw3945 project, as well - * as portions of the ieee80211 subsystem header files. - * - * 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/kernel.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/dma-mapping.h> -#include <linux/delay.h> -#include <linux/sched.h> -#include <linux/skbuff.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/if_arp.h> - -#include <net/ieee80211_radiotap.h> -#include <net/mac80211.h> - -#include <asm/div64.h> - -#include "iwl-io.h" -#include "iwl-trans.h" -#include "iwl-op-mode.h" -#include "iwl-modparams.h" - -#include "dev.h" -#include "calib.h" -#include "agn.h" - -/***************************************************************************** - * - * mac80211 entry point functions - * - *****************************************************************************/ - -static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = { - { - .max = 1, - .types = BIT(NL80211_IFTYPE_STATION), - }, - { - .max = 1, - .types = BIT(NL80211_IFTYPE_AP), - }, -}; - -static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = { - { - .max = 2, - .types = BIT(NL80211_IFTYPE_STATION), - }, -}; - -static const struct ieee80211_iface_combination -iwlagn_iface_combinations_dualmode[] = { - { .num_different_channels = 1, - .max_interfaces = 2, - .beacon_int_infra_match = true, - .limits = iwlagn_sta_ap_limits, - .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits), - }, - { .num_different_channels = 1, - .max_interfaces = 2, - .limits = iwlagn_2sta_limits, - .n_limits = ARRAY_SIZE(iwlagn_2sta_limits), - }, -}; - -/* - * Not a mac80211 entry point function, but it fits in with all the - * other mac80211 functions grouped here. - */ -int iwlagn_mac_setup_register(struct iwl_priv *priv, - const struct iwl_ucode_capabilities *capa) -{ - int ret; - struct ieee80211_hw *hw = priv->hw; - struct iwl_rxon_context *ctx; - - hw->rate_control_algorithm = "iwl-agn-rs"; - - /* Tell mac80211 our characteristics */ - ieee80211_hw_set(hw, SIGNAL_DBM); - ieee80211_hw_set(hw, AMPDU_AGGREGATION); - ieee80211_hw_set(hw, NEED_DTIM_BEFORE_ASSOC); - ieee80211_hw_set(hw, SPECTRUM_MGMT); - ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); - ieee80211_hw_set(hw, QUEUE_CONTROL); - ieee80211_hw_set(hw, SUPPORTS_PS); - ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); - ieee80211_hw_set(hw, SUPPORT_FAST_XMIT); - ieee80211_hw_set(hw, WANT_MONITOR_VIF); - - hw->offchannel_tx_hw_queue = IWL_AUX_QUEUE; - hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FMT; - - /* - * Including the following line will crash some AP's. This - * workaround removes the stimulus which causes the crash until - * the AP software can be fixed. - hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF; - */ - - if (priv->nvm_data->sku_cap_11n_enable) - hw->wiphy->features |= NL80211_FEATURE_DYNAMIC_SMPS | - NL80211_FEATURE_STATIC_SMPS; - - /* - * Enable 11w if advertised by firmware and software crypto - * is not enabled (as the firmware will interpret some mgmt - * packets, so enabling it with software crypto isn't safe) - */ - if (priv->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP && - !iwlwifi_mod_params.sw_crypto) - ieee80211_hw_set(hw, MFP_CAPABLE); - - hw->sta_data_size = sizeof(struct iwl_station_priv); - hw->vif_data_size = sizeof(struct iwl_vif_priv); - - for_each_context(priv, ctx) { - hw->wiphy->interface_modes |= ctx->interface_modes; - hw->wiphy->interface_modes |= ctx->exclusive_interface_modes; - } - - BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2); - - if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) { - hw->wiphy->iface_combinations = - iwlagn_iface_combinations_dualmode; - hw->wiphy->n_iface_combinations = - ARRAY_SIZE(iwlagn_iface_combinations_dualmode); - } - - hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; - hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG | - REGULATORY_DISABLE_BEACON_HINTS; - -#ifdef CONFIG_PM_SLEEP - if (priv->fw->img[IWL_UCODE_WOWLAN].sec[0].len && - priv->trans->ops->d3_suspend && - priv->trans->ops->d3_resume && - device_can_wakeup(priv->trans->dev)) { - priv->wowlan_support.flags = WIPHY_WOWLAN_MAGIC_PKT | - WIPHY_WOWLAN_DISCONNECT | - WIPHY_WOWLAN_EAP_IDENTITY_REQ | - WIPHY_WOWLAN_RFKILL_RELEASE; - if (!iwlwifi_mod_params.sw_crypto) - priv->wowlan_support.flags |= - WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | - WIPHY_WOWLAN_GTK_REKEY_FAILURE; - - priv->wowlan_support.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS; - priv->wowlan_support.pattern_min_len = - IWLAGN_WOWLAN_MIN_PATTERN_LEN; - priv->wowlan_support.pattern_max_len = - IWLAGN_WOWLAN_MAX_PATTERN_LEN; - hw->wiphy->wowlan = &priv->wowlan_support; - } -#endif - - if (iwlwifi_mod_params.power_save) - hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; - else - hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; - - hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX; - /* we create the 802.11 header and a max-length SSID element */ - hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 34; - - /* - * We don't use all queues: 4 and 9 are unused and any - * aggregation queue gets mapped down to the AC queue. - */ - hw->queues = IWLAGN_FIRST_AMPDU_QUEUE; - - hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL; - - if (priv->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels) - priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = - &priv->nvm_data->bands[IEEE80211_BAND_2GHZ]; - if (priv->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) - priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = - &priv->nvm_data->bands[IEEE80211_BAND_5GHZ]; - - hw->wiphy->hw_version = priv->trans->hw_id; - - iwl_leds_init(priv); - - ret = ieee80211_register_hw(priv->hw); - if (ret) { - IWL_ERR(priv, "Failed to register hw (error %d)\n", ret); - iwl_leds_exit(priv); - return ret; - } - priv->mac80211_registered = 1; - - return 0; -} - -void iwlagn_mac_unregister(struct iwl_priv *priv) -{ - if (!priv->mac80211_registered) - return; - iwl_leds_exit(priv); - ieee80211_unregister_hw(priv->hw); - priv->mac80211_registered = 0; -} - -static int __iwl_up(struct iwl_priv *priv) -{ - struct iwl_rxon_context *ctx; - int ret; - - lockdep_assert_held(&priv->mutex); - - if (test_bit(STATUS_EXIT_PENDING, &priv->status)) { - IWL_WARN(priv, "Exit pending; will not bring the NIC up\n"); - return -EIO; - } - - for_each_context(priv, ctx) { - ret = iwlagn_alloc_bcast_station(priv, ctx); - if (ret) { - iwl_dealloc_bcast_stations(priv); - return ret; - } - } - - ret = iwl_trans_start_hw(priv->trans); - if (ret) { - IWL_ERR(priv, "Failed to start HW: %d\n", ret); - goto error; - } - - ret = iwl_run_init_ucode(priv); - if (ret) { - IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret); - goto error; - } - - ret = iwl_trans_start_hw(priv->trans); - if (ret) { - IWL_ERR(priv, "Failed to start HW: %d\n", ret); - goto error; - } - - ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_REGULAR); - if (ret) { - IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret); - goto error; - } - - ret = iwl_alive_start(priv); - if (ret) - goto error; - return 0; - - error: - set_bit(STATUS_EXIT_PENDING, &priv->status); - iwl_down(priv); - clear_bit(STATUS_EXIT_PENDING, &priv->status); - - IWL_ERR(priv, "Unable to initialize device.\n"); - return ret; -} - -static int iwlagn_mac_start(struct ieee80211_hw *hw) -{ - struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); - int ret; - - IWL_DEBUG_MAC80211(priv, "enter\n"); - - /* we should be verifying the device is ready to be opened */ - mutex_lock(&priv->mutex); - ret = __iwl_up(priv); - mutex_unlock(&priv->mutex); - if (ret) - return ret; - - IWL_DEBUG_INFO(priv, "Start UP work done.\n"); - - /* Now we should be done, and the READY bit should be set. */ - if (WARN_ON(!test_bit(STATUS_READY, &priv->status))) - ret = -EIO; - - iwlagn_led_enable(priv); - - priv->is_open = 1; - IWL_DEBUG_MAC80211(priv, "leave\n"); - return 0; -} - -static void iwlagn_mac_stop(struct ieee80211_hw *hw) -{ - struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); - - IWL_DEBUG_MAC80211(priv, "enter\n"); - - if (!priv->is_open) - return; - - priv->is_open = 0; - - mutex_lock(&priv->mutex); - iwl_down(priv); - mutex_unlock(&priv->mutex); - - iwl_cancel_deferred_work(priv); - - flush_workqueue(priv->workqueue); - - IWL_DEBUG_MAC80211(priv, "leave\n"); -} - -static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, - struct cfg80211_gtk_rekey_data *data) -{ - struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); - - if (iwlwifi_mod_params.sw_crypto) - 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); - - 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); - 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.sw_crypto) { - 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; - /* fall through */ - 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 inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg) -{ - if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG) - return false; - return true; -} - -static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg) -{ - if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG) - return false; - if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG) - return true; - - /* disabled by default */ - return false; -} - -static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, - enum ieee80211_ampdu_mlme_action action, - struct ieee80211_sta *sta, u16 tid, u16 *ssn, - u8 buf_size, bool amsdu) -{ - struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); - int ret = -EINVAL; - 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(priv->cfg)) - 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(priv->cfg)) - 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->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_queue_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); - - if (WARN_ON(ctx->vif != vif)) { - struct iwl_rxon_context *tmp; - IWL_ERR(priv, "ctx->vif = %p, vif = %p\n", ctx->vif, vif); - for_each_context(priv, tmp) - IWL_ERR(priv, "\tID = %d:\tctx = %p\tctx->vif = %p\n", - tmp->ctxid, tmp, tmp->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; -} |