/drivers/net/wireless/iwlwifi/iwl-sta.h
C Header | 138 lines | 59 code | 18 blank | 61 comment | 3 complexity | 1bd052dcc4f10e1e85e29e7d197c06ac MD5 | raw file
Possible License(s): LGPL-2.0, AGPL-1.0, GPL-2.0
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_sta_h__ 30#define __iwl_sta_h__ 31 32#include "iwl-dev.h" 33 34#define IWL_STA_DRIVER_ACTIVE BIT(0) /* driver entry is active */ 35#define IWL_STA_UCODE_ACTIVE BIT(1) /* ucode entry is active */ 36#define IWL_STA_UCODE_INPROGRESS BIT(2) /* ucode entry is in process of 37 being activated */ 38#define IWL_STA_LOCAL BIT(3) /* station state not directed by mac80211; 39 (this is for the IBSS BSSID stations) */ 40#define IWL_STA_BCAST BIT(4) /* this station is the special bcast station */ 41 42 43void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx); 44void iwl_clear_ucode_stations(struct iwl_priv *priv, 45 struct iwl_rxon_context *ctx); 46void iwl_dealloc_bcast_stations(struct iwl_priv *priv); 47int iwl_get_free_ucode_key_offset(struct iwl_priv *priv); 48int iwl_send_add_sta(struct iwl_priv *priv, 49 struct iwl_addsta_cmd *sta, u8 flags); 50int iwl_add_station_common(struct iwl_priv *priv, struct iwl_rxon_context *ctx, 51 const u8 *addr, bool is_ap, 52 struct ieee80211_sta *sta, u8 *sta_id_r); 53int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id, 54 const u8 *addr); 55int iwl_mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 56 struct ieee80211_sta *sta); 57 58u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx, 59 const u8 *addr, bool is_ap, struct ieee80211_sta *sta); 60 61int iwl_send_lq_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx, 62 struct iwl_link_quality_cmd *lq, u8 flags, bool init); 63void iwl_reprogram_ap_sta(struct iwl_priv *priv, struct iwl_rxon_context *ctx); 64 65/** 66 * iwl_clear_driver_stations - clear knowledge of all stations from driver 67 * @priv: iwl priv struct 68 * 69 * This is called during iwl_down() to make sure that in the case 70 * we're coming there from a hardware restart mac80211 will be 71 * able to reconfigure stations -- if we're getting there in the 72 * normal down flow then the stations will already be cleared. 73 */ 74static inline void iwl_clear_driver_stations(struct iwl_priv *priv) 75{ 76 unsigned long flags; 77 struct iwl_rxon_context *ctx; 78 79 spin_lock_irqsave(&priv->sta_lock, flags); 80 memset(priv->stations, 0, sizeof(priv->stations)); 81 priv->num_stations = 0; 82 83 priv->ucode_key_table = 0; 84 85 for_each_context(priv, ctx) { 86 /* 87 * Remove all key information that is not stored as part 88 * of station information since mac80211 may not have had 89 * a chance to remove all the keys. When device is 90 * reconfigured by mac80211 after an error all keys will 91 * be reconfigured. 92 */ 93 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys)); 94 ctx->key_mapping_keys = 0; 95 } 96 97 spin_unlock_irqrestore(&priv->sta_lock, flags); 98} 99 100static inline int iwl_sta_id(struct ieee80211_sta *sta) 101{ 102 if (WARN_ON(!sta)) 103 return IWL_INVALID_STATION; 104 105 return ((struct iwl_station_priv_common *)sta->drv_priv)->sta_id; 106} 107 108/** 109 * iwl_sta_id_or_broadcast - return sta_id or broadcast sta 110 * @priv: iwl priv 111 * @context: the current context 112 * @sta: mac80211 station 113 * 114 * In certain circumstances mac80211 passes a station pointer 115 * that may be %NULL, for example during TX or key setup. In 116 * that case, we need to use the broadcast station, so this 117 * inline wraps that pattern. 118 */ 119static inline int iwl_sta_id_or_broadcast(struct iwl_priv *priv, 120 struct iwl_rxon_context *context, 121 struct ieee80211_sta *sta) 122{ 123 int sta_id; 124 125 if (!sta) 126 return context->bcast_sta_id; 127 128 sta_id = iwl_sta_id(sta); 129 130 /* 131 * mac80211 should not be passing a partially 132 * initialised station! 133 */ 134 WARN_ON(sta_id == IWL_INVALID_STATION); 135 136 return sta_id; 137} 138#endif /* __iwl_sta_h__ */