Wey-Yi Guy | be663ab | 2011-02-21 11:27:26 -0800 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved. |
| 4 | * |
| 5 | * Portions of this file are derived from the ipw3945 project, as well |
| 6 | * as portions of the ieee80211 subsystem header files. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of version 2 of the GNU General Public License as |
| 10 | * published by the Free Software Foundation. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, but WITHOUT |
| 13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 15 | * more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License along with |
| 18 | * this program; if not, write to the Free Software Foundation, Inc., |
| 19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA |
| 20 | * |
| 21 | * The full GNU General Public License is included in this distribution in the |
| 22 | * file called LICENSE. |
| 23 | * |
| 24 | * Contact Information: |
| 25 | * Intel Linux Wireless <ilw@linux.intel.com> |
| 26 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| 27 | * |
| 28 | *****************************************************************************/ |
| 29 | #ifndef __iwl_legacy_sta_h__ |
| 30 | #define __iwl_legacy_sta_h__ |
| 31 | |
| 32 | #include "iwl-dev.h" |
| 33 | |
| 34 | #define HW_KEY_DYNAMIC 0 |
| 35 | #define HW_KEY_DEFAULT 1 |
| 36 | |
| 37 | #define IWL_STA_DRIVER_ACTIVE BIT(0) /* driver entry is active */ |
| 38 | #define IWL_STA_UCODE_ACTIVE BIT(1) /* ucode entry is active */ |
| 39 | #define IWL_STA_UCODE_INPROGRESS BIT(2) /* ucode entry is in process of |
| 40 | being activated */ |
| 41 | #define IWL_STA_LOCAL BIT(3) /* station state not directed by mac80211; |
| 42 | (this is for the IBSS BSSID stations) */ |
| 43 | #define IWL_STA_BCAST BIT(4) /* this station is the special bcast station */ |
| 44 | |
| 45 | |
| 46 | void iwl_legacy_restore_stations(struct iwl_priv *priv, |
| 47 | struct iwl_rxon_context *ctx); |
| 48 | void iwl_legacy_clear_ucode_stations(struct iwl_priv *priv, |
| 49 | struct iwl_rxon_context *ctx); |
| 50 | void iwl_legacy_dealloc_bcast_stations(struct iwl_priv *priv); |
| 51 | int iwl_legacy_get_free_ucode_key_index(struct iwl_priv *priv); |
| 52 | int iwl_legacy_send_add_sta(struct iwl_priv *priv, |
| 53 | struct iwl_legacy_addsta_cmd *sta, u8 flags); |
| 54 | int iwl_legacy_add_station_common(struct iwl_priv *priv, |
| 55 | struct iwl_rxon_context *ctx, |
| 56 | const u8 *addr, bool is_ap, |
| 57 | struct ieee80211_sta *sta, u8 *sta_id_r); |
| 58 | int iwl_legacy_remove_station(struct iwl_priv *priv, |
| 59 | const u8 sta_id, |
| 60 | const u8 *addr); |
| 61 | int iwl_legacy_mac_sta_remove(struct ieee80211_hw *hw, |
| 62 | struct ieee80211_vif *vif, |
| 63 | struct ieee80211_sta *sta); |
| 64 | |
| 65 | u8 iwl_legacy_prep_station(struct iwl_priv *priv, |
| 66 | struct iwl_rxon_context *ctx, |
| 67 | const u8 *addr, bool is_ap, |
| 68 | struct ieee80211_sta *sta); |
| 69 | |
| 70 | int iwl_legacy_send_lq_cmd(struct iwl_priv *priv, |
| 71 | struct iwl_rxon_context *ctx, |
| 72 | struct iwl_link_quality_cmd *lq, |
| 73 | u8 flags, bool init); |
| 74 | |
| 75 | /** |
| 76 | * iwl_legacy_clear_driver_stations - clear knowledge of all stations from driver |
| 77 | * @priv: iwl priv struct |
| 78 | * |
| 79 | * This is called during iwl_down() to make sure that in the case |
| 80 | * we're coming there from a hardware restart mac80211 will be |
| 81 | * able to reconfigure stations -- if we're getting there in the |
| 82 | * normal down flow then the stations will already be cleared. |
| 83 | */ |
| 84 | static inline void iwl_legacy_clear_driver_stations(struct iwl_priv *priv) |
| 85 | { |
| 86 | unsigned long flags; |
| 87 | struct iwl_rxon_context *ctx; |
| 88 | |
| 89 | spin_lock_irqsave(&priv->sta_lock, flags); |
| 90 | memset(priv->stations, 0, sizeof(priv->stations)); |
| 91 | priv->num_stations = 0; |
| 92 | |
| 93 | priv->ucode_key_table = 0; |
| 94 | |
| 95 | for_each_context(priv, ctx) { |
| 96 | /* |
| 97 | * Remove all key information that is not stored as part |
| 98 | * of station information since mac80211 may not have had |
| 99 | * a chance to remove all the keys. When device is |
| 100 | * reconfigured by mac80211 after an error all keys will |
| 101 | * be reconfigured. |
| 102 | */ |
| 103 | memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys)); |
| 104 | ctx->key_mapping_keys = 0; |
| 105 | } |
| 106 | |
| 107 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
| 108 | } |
| 109 | |
| 110 | static inline int iwl_legacy_sta_id(struct ieee80211_sta *sta) |
| 111 | { |
| 112 | if (WARN_ON(!sta)) |
| 113 | return IWL_INVALID_STATION; |
| 114 | |
| 115 | return ((struct iwl_station_priv_common *)sta->drv_priv)->sta_id; |
| 116 | } |
| 117 | |
| 118 | /** |
| 119 | * iwl_legacy_sta_id_or_broadcast - return sta_id or broadcast sta |
| 120 | * @priv: iwl priv |
| 121 | * @context: the current context |
| 122 | * @sta: mac80211 station |
| 123 | * |
| 124 | * In certain circumstances mac80211 passes a station pointer |
| 125 | * that may be %NULL, for example during TX or key setup. In |
| 126 | * that case, we need to use the broadcast station, so this |
| 127 | * inline wraps that pattern. |
| 128 | */ |
| 129 | static inline int iwl_legacy_sta_id_or_broadcast(struct iwl_priv *priv, |
| 130 | struct iwl_rxon_context *context, |
| 131 | struct ieee80211_sta *sta) |
| 132 | { |
| 133 | int sta_id; |
| 134 | |
| 135 | if (!sta) |
| 136 | return context->bcast_sta_id; |
| 137 | |
| 138 | sta_id = iwl_legacy_sta_id(sta); |
| 139 | |
| 140 | /* |
| 141 | * mac80211 should not be passing a partially |
| 142 | * initialised station! |
| 143 | */ |
| 144 | WARN_ON(sta_id == IWL_INVALID_STATION); |
| 145 | |
| 146 | return sta_id; |
| 147 | } |
| 148 | #endif /* __iwl_legacy_sta_h__ */ |