1 /* 2 * hostapd / Station table 3 * Copyright (c) 2002-2011, 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_ASSOC_REQ_OK BIT(15) 35 #define WLAN_STA_WPS2 BIT(16) 36 #define WLAN_STA_PENDING_DISASSOC_CB BIT(29) 37 #define WLAN_STA_PENDING_DEAUTH_CB BIT(30) 38 #define WLAN_STA_NONERP BIT(31) 39 40 /* Maximum number of supported rates (from both Supported Rates and Extended 41 * Supported Rates IEs). */ 42 #define WLAN_SUPP_RATES_MAX 32 43 44 45 struct sta_info { 46 struct sta_info *next; /* next entry in sta list */ 47 struct sta_info *hnext; /* next entry in hash table list */ 48 u8 addr[6]; 49 u16 aid; /* STA's unique AID (1 .. 2007) or 0 if not yet assigned */ 50 u32 flags; /* Bitfield of WLAN_STA_* */ 51 u16 capability; 52 u16 listen_interval; /* or beacon_int for APs */ 53 u8 supported_rates[WLAN_SUPP_RATES_MAX]; 54 int supported_rates_len; 55 56 unsigned int nonerp_set:1; 57 unsigned int no_short_slot_time_set:1; 58 unsigned int no_short_preamble_set:1; 59 unsigned int no_ht_gf_set:1; 60 unsigned int no_ht_set:1; 61 unsigned int ht_20mhz_set:1; 62 unsigned int no_p2p_set:1; 63 64 u16 auth_alg; 65 u8 previous_ap[6]; 66 67 enum { 68 STA_NULLFUNC = 0, STA_DISASSOC, STA_DEAUTH, STA_REMOVE 69 } timeout_next; 70 71 u16 deauth_reason; 72 u16 disassoc_reason; 73 74 /* IEEE 802.1X related data */ 75 struct eapol_state_machine *eapol_sm; 76 77 /* IEEE 802.11f (IAPP) related data */ 78 struct ieee80211_mgmt *last_assoc_req; 79 80 u32 acct_session_id_hi; 81 u32 acct_session_id_lo; 82 time_t acct_session_start; 83 int acct_session_started; 84 int acct_terminate_cause; /* Acct-Terminate-Cause */ 85 int acct_interim_interval; /* Acct-Interim-Interval */ 86 87 unsigned long last_rx_bytes; 88 unsigned long last_tx_bytes; 89 u32 acct_input_gigawords; /* Acct-Input-Gigawords */ 90 u32 acct_output_gigawords; /* Acct-Output-Gigawords */ 91 92 u8 *challenge; /* IEEE 802.11 Shared Key Authentication Challenge */ 93 94 struct wpa_state_machine *wpa_sm; 95 struct rsn_preauth_interface *preauth_iface; 96 97 struct hostapd_ssid *ssid; /* SSID selection based on (Re)AssocReq */ 98 struct hostapd_ssid *ssid_probe; /* SSID selection based on ProbeReq */ 99 100 int vlan_id; 101 102 struct ieee80211_ht_capabilities *ht_capabilities; 103 104 #ifdef CONFIG_IEEE80211W 105 int sa_query_count; /* number of pending SA Query requests; 106 * 0 = no SA Query in progress */ 107 int sa_query_timed_out; 108 u8 *sa_query_trans_id; /* buffer of WLAN_SA_QUERY_TR_ID_LEN * 109 * sa_query_count octets of pending SA Query 110 * transaction identifiers */ 111 struct os_time sa_query_start; 112 #endif /* CONFIG_IEEE80211W */ 113 114 struct wpabuf *wps_ie; /* WPS IE from (Re)Association Request */ 115 struct wpabuf *p2p_ie; /* P2P IE from (Re)Association Request */ 116 }; 117 118 119 /* Default value for maximum station inactivity. After AP_MAX_INACTIVITY has 120 * passed since last received frame from the station, a nullfunc data frame is 121 * sent to the station. If this frame is not acknowledged and no other frames 122 * have been received, the station will be disassociated after 123 * AP_DISASSOC_DELAY seconds. Similarly, the station will be deauthenticated 124 * after AP_DEAUTH_DELAY seconds has passed after disassociation. */ 125 #define AP_MAX_INACTIVITY (5 * 60) 126 #define AP_DISASSOC_DELAY (1) 127 #define AP_DEAUTH_DELAY (1) 128 /* Number of seconds to keep STA entry with Authenticated flag after it has 129 * been disassociated. */ 130 #define AP_MAX_INACTIVITY_AFTER_DISASSOC (1 * 30) 131 /* Number of seconds to keep STA entry after it has been deauthenticated. */ 132 #define AP_MAX_INACTIVITY_AFTER_DEAUTH (1 * 5) 133 134 135 struct hostapd_data; 136 137 int ap_for_each_sta(struct hostapd_data *hapd, 138 int (*cb)(struct hostapd_data *hapd, struct sta_info *sta, 139 void *ctx), 140 void *ctx); 141 struct sta_info * ap_get_sta(struct hostapd_data *hapd, const u8 *sta); 142 void ap_sta_hash_add(struct hostapd_data *hapd, struct sta_info *sta); 143 void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta); 144 void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta); 145 void hostapd_free_stas(struct hostapd_data *hapd); 146 void ap_handle_timer(void *eloop_ctx, void *timeout_ctx); 147 void ap_sta_session_timeout(struct hostapd_data *hapd, struct sta_info *sta, 148 u32 session_timeout); 149 void ap_sta_no_session_timeout(struct hostapd_data *hapd, 150 struct sta_info *sta); 151 struct sta_info * ap_sta_add(struct hostapd_data *hapd, const u8 *addr); 152 void ap_sta_disassociate(struct hostapd_data *hapd, struct sta_info *sta, 153 u16 reason); 154 void ap_sta_deauthenticate(struct hostapd_data *hapd, struct sta_info *sta, 155 u16 reason); 156 int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta, 157 int old_vlanid); 158 void ap_sta_start_sa_query(struct hostapd_data *hapd, struct sta_info *sta); 159 void ap_sta_stop_sa_query(struct hostapd_data *hapd, struct sta_info *sta); 160 int ap_check_sa_query_timeout(struct hostapd_data *hapd, struct sta_info *sta); 161 void ap_sta_disconnect(struct hostapd_data *hapd, struct sta_info *sta, 162 const u8 *addr, u16 reason); 163 164 void ap_sta_set_authorized(struct hostapd_data *hapd, 165 struct sta_info *sta, int authorized); 166 static inline int ap_sta_is_authorized(struct sta_info *sta) 167 { 168 return sta->flags & WLAN_STA_AUTHORIZED; 169 } 170 171 void ap_sta_deauth_cb(struct hostapd_data *hapd, struct sta_info *sta); 172 void ap_sta_disassoc_cb(struct hostapd_data *hapd, struct sta_info *sta); 173 174 #endif /* STA_INFO_H */ 175