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Emmanuel Grumbach6974e362008-04-14 21:16:06 -07001/******************************************************************************
2 *
Wey-Yi Guy901069c72011-04-05 09:42:00 -07003 * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
Emmanuel Grumbach6974e362008-04-14 21:16:06 -07004 *
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:
Winkler, Tomas759ef892008-12-09 11:28:58 -080025 * Intel Linux Wireless <ilw@linux.intel.com>
Emmanuel Grumbach6974e362008-04-14 21:16:06 -070026 * 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
Johannes Berg2a87c262010-04-30 11:30:45 -070032#include "iwl-dev.h"
33
Emmanuel Grumbachccc038a2008-05-15 13:54:09 +080034#define HW_KEY_DYNAMIC 0
35#define HW_KEY_DEFAULT 1
36
Reinette Chatre7e246192010-02-18 22:58:32 -080037#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 */
Johannes Berg2c810cc2010-04-29 00:53:29 -070041#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 */
Reinette Chatre7e246192010-02-18 22:58:32 -080044
45
Johannes Bergdcef7322010-08-27 08:55:52 -070046void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx);
47void iwl_clear_ucode_stations(struct iwl_priv *priv,
48 struct iwl_rxon_context *ctx);
Johannes Berga194e322010-08-27 08:53:46 -070049void iwl_dealloc_bcast_stations(struct iwl_priv *priv);
Abhijeet Kolekar6e21f152009-02-27 16:21:21 -080050int iwl_get_free_ucode_key_index(struct iwl_priv *priv);
Samuel Ortiz17f841c2009-01-23 13:45:20 -080051int iwl_send_add_sta(struct iwl_priv *priv,
52 struct iwl_addsta_cmd *sta, u8 flags);
Johannes Berga194e322010-08-27 08:53:46 -070053int iwl_add_station_common(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
54 const u8 *addr, bool is_ap,
Johannes Berg238d7812010-08-23 10:46:45 +020055 struct ieee80211_sta *sta, u8 *sta_id_r);
Johannes Bergfd1af152010-04-30 11:30:43 -070056int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id,
57 const u8 *addr);
Reinette Chatrefe6b23d2010-02-22 16:24:47 -080058int iwl_mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
59 struct ieee80211_sta *sta);
Johannes Berga30e3112010-09-22 18:02:01 +020060
61u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
62 const u8 *addr, bool is_ap, struct ieee80211_sta *sta);
63
64int iwl_send_lq_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
65 struct iwl_link_quality_cmd *lq, u8 flags, bool init);
Johannes Berg2b5f7a62010-11-10 18:25:48 -080066void iwl_reprogram_ap_sta(struct iwl_priv *priv, struct iwl_rxon_context *ctx);
Johannes Berg64ba9a52010-04-30 11:30:44 -070067
Johannes Bergdb125c72010-05-07 01:49:15 -070068/**
69 * iwl_clear_driver_stations - clear knowledge of all stations from driver
70 * @priv: iwl priv struct
71 *
72 * This is called during iwl_down() to make sure that in the case
73 * we're coming there from a hardware restart mac80211 will be
74 * able to reconfigure stations -- if we're getting there in the
75 * normal down flow then the stations will already be cleared.
76 */
77static inline void iwl_clear_driver_stations(struct iwl_priv *priv)
78{
79 unsigned long flags;
Johannes Bergc10afb62010-08-23 10:46:43 +020080 struct iwl_rxon_context *ctx;
Johannes Bergdb125c72010-05-07 01:49:15 -070081
82 spin_lock_irqsave(&priv->sta_lock, flags);
83 memset(priv->stations, 0, sizeof(priv->stations));
84 priv->num_stations = 0;
Reinette Chatree4c06472010-06-21 14:23:47 -070085
Reinette Chatree4c06472010-06-21 14:23:47 -070086 priv->ucode_key_table = 0;
Johannes Bergc10afb62010-08-23 10:46:43 +020087
88 for_each_context(priv, ctx) {
89 /*
90 * Remove all key information that is not stored as part
91 * of station information since mac80211 may not have had
92 * a chance to remove all the keys. When device is
93 * reconfigured by mac80211 after an error all keys will
94 * be reconfigured.
95 */
96 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
97 ctx->key_mapping_keys = 0;
98 }
Reinette Chatree4c06472010-06-21 14:23:47 -070099
Johannes Bergdb125c72010-05-07 01:49:15 -0700100 spin_unlock_irqrestore(&priv->sta_lock, flags);
101}
102
Johannes Berg64ba9a52010-04-30 11:30:44 -0700103static inline int iwl_sta_id(struct ieee80211_sta *sta)
104{
105 if (WARN_ON(!sta))
106 return IWL_INVALID_STATION;
107
108 return ((struct iwl_station_priv_common *)sta->drv_priv)->sta_id;
109}
Johannes Berg0af8bca2010-04-30 14:08:00 -0700110
111/**
112 * iwl_sta_id_or_broadcast - return sta_id or broadcast sta
113 * @priv: iwl priv
Johannes Berga194e322010-08-27 08:53:46 -0700114 * @context: the current context
Johannes Berg0af8bca2010-04-30 14:08:00 -0700115 * @sta: mac80211 station
116 *
117 * In certain circumstances mac80211 passes a station pointer
118 * that may be %NULL, for example during TX or key setup. In
119 * that case, we need to use the broadcast station, so this
120 * inline wraps that pattern.
121 */
122static inline int iwl_sta_id_or_broadcast(struct iwl_priv *priv,
Johannes Berga194e322010-08-27 08:53:46 -0700123 struct iwl_rxon_context *context,
Johannes Berg0af8bca2010-04-30 14:08:00 -0700124 struct ieee80211_sta *sta)
125{
126 int sta_id;
127
128 if (!sta)
Johannes Berga194e322010-08-27 08:53:46 -0700129 return context->bcast_sta_id;
Johannes Berg0af8bca2010-04-30 14:08:00 -0700130
131 sta_id = iwl_sta_id(sta);
132
133 /*
134 * mac80211 should not be passing a partially
135 * initialised station!
136 */
137 WARN_ON(sta_id == IWL_INVALID_STATION);
138
139 return sta_id;
140}
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700141#endif /* __iwl_sta_h__ */