1 /* 2 * hostapd / Station table 3 * Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 * 9 * Alternatively, this software may be distributed under the terms of BSD 10 * license. 11 * 12 * See README and COPYING for more details. 13 */ 14 15 #ifndef STA_INFO_H 16 #define STA_INFO_H 17 18 /* STA flags */ 19 #define WLAN_STA_AUTH BIT(0) 20 #define WLAN_STA_ASSOC BIT(1) 21 #define WLAN_STA_PS BIT(2) 22 #define WLAN_STA_TIM BIT(3) 23 #define WLAN_STA_PERM BIT(4) 24 #define WLAN_STA_AUTHORIZED BIT(5) 25 #define WLAN_STA_PENDING_POLL BIT(6) /* pending activity poll not ACKed */ 26 #define WLAN_STA_SHORT_PREAMBLE BIT(7) 27 #define WLAN_STA_PREAUTH BIT(8) 28 #define WLAN_STA_WMM BIT(9) 29 #define WLAN_STA_MFP BIT(10) 30 #define WLAN_STA_HT BIT(11) 31 #define WLAN_STA_WPS BIT(12) 32 #define WLAN_STA_MAYBE_WPS BIT(13) 33 #define WLAN_STA_WDS BIT(14) 34 #define WLAN_STA_NONERP BIT(31) 35 36 /* Maximum number of supported rates (from both Supported Rates and Extended 37 * Supported Rates IEs). */ 38 #define WLAN_SUPP_RATES_MAX 32 39 40 41 struct sta_info { 42 struct sta_info *next; /* next entry in sta list */ 43 struct sta_info *hnext; /* next entry in hash table list */ 44 u8 addr[6]; 45 u16 aid; /* STA's unique AID (1 .. 2007) or 0 if not yet assigned */ 46 u32 flags; /* Bitfield of WLAN_STA_* */ 47 u16 capability; 48 u16 listen_interval; /* or beacon_int for APs */ 49 u8 supported_rates[WLAN_SUPP_RATES_MAX]; 50 int supported_rates_len; 51 52 unsigned int nonerp_set:1; 53 unsigned int no_short_slot_time_set:1; 54 unsigned int no_short_preamble_set:1; 55 unsigned int no_ht_gf_set:1; 56 unsigned int no_ht_set:1; 57 unsigned int ht_20mhz_set:1; 58 59 u16 auth_alg; 60 u8 previous_ap[6]; 61 62 enum { 63 STA_NULLFUNC = 0, STA_DISASSOC, STA_DEAUTH, STA_REMOVE 64 } timeout_next; 65 66 /* IEEE 802.1X related data */ 67 struct eapol_state_machine *eapol_sm; 68 69 /* IEEE 802.11f (IAPP) related data */ 70 struct ieee80211_mgmt *last_assoc_req; 71 72 u32 acct_session_id_hi; 73 u32 acct_session_id_lo; 74 time_t acct_session_start; 75 int acct_session_started; 76 int acct_terminate_cause; /* Acct-Terminate-Cause */ 77 int acct_interim_interval; /* Acct-Interim-Interval */ 78 79 unsigned long last_rx_bytes; 80 unsigned long last_tx_bytes; 81 u32 acct_input_gigawords; /* Acct-Input-Gigawords */ 82 u32 acct_output_gigawords; /* Acct-Output-Gigawords */ 83 84 u8 *challenge; /* IEEE 802.11 Shared Key Authentication Challenge */ 85 86 struct wpa_state_machine *wpa_sm; 87 struct rsn_preauth_interface *preauth_iface; 88 89 struct hostapd_ssid *ssid; /* SSID selection based on (Re)AssocReq */ 90 struct hostapd_ssid *ssid_probe; /* SSID selection based on ProbeReq */ 91 92 int vlan_id; 93 94 struct ieee80211_ht_capabilities *ht_capabilities; 95 96 #ifdef CONFIG_IEEE80211W 97 int sa_query_count; /* number of pending SA Query requests; 98 * 0 = no SA Query in progress */ 99 int sa_query_timed_out; 100 u8 *sa_query_trans_id; /* buffer of WLAN_SA_QUERY_TR_ID_LEN * 101 * sa_query_count octets of pending SA Query 102 * transaction identifiers */ 103 struct os_time sa_query_start; 104 #endif /* CONFIG_IEEE80211W */ 105 106 struct wpabuf *wps_ie; /* WPS IE from (Re)Association Request */ 107 }; 108 109 110 /* Default value for maximum station inactivity. After AP_MAX_INACTIVITY has 111 * passed since last received frame from the station, a nullfunc data frame is 112 * sent to the station. If this frame is not acknowledged and no other frames 113 * have been received, the station will be disassociated after 114 * AP_DISASSOC_DELAY seconds. Similarily, the station will be deauthenticated 115 * after AP_DEAUTH_DELAY seconds has passed after disassociation. */ 116 #define AP_MAX_INACTIVITY (5 * 60) 117 #define AP_DISASSOC_DELAY (1) 118 #define AP_DEAUTH_DELAY (1) 119 /* Number of seconds to keep STA entry with Authenticated flag after it has 120 * been disassociated. */ 121 #define AP_MAX_INACTIVITY_AFTER_DISASSOC (1 * 30) 122 /* Number of seconds to keep STA entry after it has been deauthenticated. */ 123 #define AP_MAX_INACTIVITY_AFTER_DEAUTH (1 * 5) 124 125 126 struct hostapd_data; 127 128 int ap_for_each_sta(struct hostapd_data *hapd, 129 int (*cb)(struct hostapd_data *hapd, struct sta_info *sta, 130 void *ctx), 131 void *ctx); 132 struct sta_info * ap_get_sta(struct hostapd_data *hapd, const u8 *sta); 133 void ap_sta_hash_add(struct hostapd_data *hapd, struct sta_info *sta); 134 void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta); 135 void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta); 136 void hostapd_free_stas(struct hostapd_data *hapd); 137 void ap_handle_timer(void *eloop_ctx, void *timeout_ctx); 138 void ap_sta_session_timeout(struct hostapd_data *hapd, struct sta_info *sta, 139 u32 session_timeout); 140 void ap_sta_no_session_timeout(struct hostapd_data *hapd, 141 struct sta_info *sta); 142 struct sta_info * ap_sta_add(struct hostapd_data *hapd, const u8 *addr); 143 void ap_sta_disassociate(struct hostapd_data *hapd, struct sta_info *sta, 144 u16 reason); 145 void ap_sta_deauthenticate(struct hostapd_data *hapd, struct sta_info *sta, 146 u16 reason); 147 int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta, 148 int old_vlanid); 149 void ap_sta_start_sa_query(struct hostapd_data *hapd, struct sta_info *sta); 150 void ap_sta_stop_sa_query(struct hostapd_data *hapd, struct sta_info *sta); 151 int ap_check_sa_query_timeout(struct hostapd_data *hapd, struct sta_info *sta); 152 void ap_sta_disconnect(struct hostapd_data *hapd, struct sta_info *sta, 153 const u8 *addr, u16 reason); 154 155 #endif /* STA_INFO_H */ 156