diff options
Diffstat (limited to 'drivers/net/wireless/iwlegacy/iwl-sta.h')
| -rw-r--r-- | drivers/net/wireless/iwlegacy/iwl-sta.h | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlegacy/iwl-sta.h b/drivers/net/wireless/iwlegacy/iwl-sta.h new file mode 100644 index 000000000000..67bd75fe01a1 --- /dev/null +++ b/drivers/net/wireless/iwlegacy/iwl-sta.h @@ -0,0 +1,148 @@ +/****************************************************************************** + * + * Copyright(c) 2003 - 2011 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 + * + *****************************************************************************/ +#ifndef __iwl_legacy_sta_h__ +#define __iwl_legacy_sta_h__ + +#include "iwl-dev.h" + +#define HW_KEY_DYNAMIC 0 +#define HW_KEY_DEFAULT 1 + +#define IWL_STA_DRIVER_ACTIVE BIT(0) /* driver entry is active */ +#define IWL_STA_UCODE_ACTIVE BIT(1) /* ucode entry is active */ +#define IWL_STA_UCODE_INPROGRESS BIT(2) /* ucode entry is in process of + being activated */ +#define IWL_STA_LOCAL BIT(3) /* station state not directed by mac80211; + (this is for the IBSS BSSID stations) */ +#define IWL_STA_BCAST BIT(4) /* this station is the special bcast station */ + + +void iwl_legacy_restore_stations(struct iwl_priv *priv, + struct iwl_rxon_context *ctx); +void iwl_legacy_clear_ucode_stations(struct iwl_priv *priv, + struct iwl_rxon_context *ctx); +void iwl_legacy_dealloc_bcast_stations(struct iwl_priv *priv); +int iwl_legacy_get_free_ucode_key_index(struct iwl_priv *priv); +int iwl_legacy_send_add_sta(struct iwl_priv *priv, + struct iwl_legacy_addsta_cmd *sta, u8 flags); +int iwl_legacy_add_station_common(struct iwl_priv *priv, + struct iwl_rxon_context *ctx, + const u8 *addr, bool is_ap, + struct ieee80211_sta *sta, u8 *sta_id_r); +int iwl_legacy_remove_station(struct iwl_priv *priv, + const u8 sta_id, + const u8 *addr); +int iwl_legacy_mac_sta_remove(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta); + +u8 iwl_legacy_prep_station(struct iwl_priv *priv, + struct iwl_rxon_context *ctx, + const u8 *addr, bool is_ap, + struct ieee80211_sta *sta); + +int iwl_legacy_send_lq_cmd(struct iwl_priv *priv, + struct iwl_rxon_context *ctx, + struct iwl_link_quality_cmd *lq, + u8 flags, bool init); + +/** + * iwl_legacy_clear_driver_stations - clear knowledge of all stations from driver + * @priv: iwl priv struct + * + * This is called during iwl_down() to make sure that in the case + * we're coming there from a hardware restart mac80211 will be + * able to reconfigure stations -- if we're getting there in the + * normal down flow then the stations will already be cleared. + */ +static inline void iwl_legacy_clear_driver_stations(struct iwl_priv *priv) +{ + unsigned long flags; + struct iwl_rxon_context *ctx; + + spin_lock_irqsave(&priv->sta_lock, flags); + memset(priv->stations, 0, sizeof(priv->stations)); + priv->num_stations = 0; + + priv->ucode_key_table = 0; + + for_each_context(priv, ctx) { + /* + * Remove all key information that is not stored as part + * of station information since mac80211 may not have had + * a chance to remove all the keys. When device is + * reconfigured by mac80211 after an error all keys will + * be reconfigured. + */ + memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys)); + ctx->key_mapping_keys = 0; + } + + spin_unlock_irqrestore(&priv->sta_lock, flags); +} + +static inline int iwl_legacy_sta_id(struct ieee80211_sta *sta) +{ + if (WARN_ON(!sta)) + return IWL_INVALID_STATION; + + return ((struct iwl_station_priv_common *)sta->drv_priv)->sta_id; +} + +/** + * iwl_legacy_sta_id_or_broadcast - return sta_id or broadcast sta + * @priv: iwl priv + * @context: the current context + * @sta: mac80211 station + * + * In certain circumstances mac80211 passes a station pointer + * that may be %NULL, for example during TX or key setup. In + * that case, we need to use the broadcast station, so this + * inline wraps that pattern. + */ +static inline int iwl_legacy_sta_id_or_broadcast(struct iwl_priv *priv, + struct iwl_rxon_context *context, + struct ieee80211_sta *sta) +{ + int sta_id; + + if (!sta) + return context->bcast_sta_id; + + sta_id = iwl_legacy_sta_id(sta); + + /* + * mac80211 should not be passing a partially + * initialised station! + */ + WARN_ON(sta_id == IWL_INVALID_STATION); + + return sta_id; +} +#endif /* __iwl_legacy_sta_h__ */ |