src/ap/sta_info.h

   1 /*
   2  * hostapd / Station table
   3  * Copyright (c) 2002-2011, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #ifndef STA_INFO_H
  10 #define STA_INFO_H
  11
  12 /* STA flags */
  13 #define WLAN_STA_AUTH BIT(0)
  14 #define WLAN_STA_ASSOC BIT(1)
  15 #define WLAN_STA_PS BIT(2)
  16 #define WLAN_STA_TIM BIT(3)
  17 #define WLAN_STA_PERM BIT(4)
  18 #define WLAN_STA_AUTHORIZED BIT(5)
  19 #define WLAN_STA_PENDING_POLL BIT(6) /* pending activity poll not ACKed */
  20 #define WLAN_STA_SHORT_PREAMBLE BIT(7)
  21 #define WLAN_STA_PREAUTH BIT(8)
  22 #define WLAN_STA_WMM BIT(9)
  23 #define WLAN_STA_MFP BIT(10)
  24 #define WLAN_STA_HT BIT(11)
  25 #define WLAN_STA_WPS BIT(12)
  26 #define WLAN_STA_MAYBE_WPS BIT(13)
  27 #define WLAN_STA_WDS BIT(14)
  28 #define WLAN_STA_ASSOC_REQ_OK BIT(15)
  29 #define WLAN_STA_WPS2 BIT(16)
  30 #define WLAN_STA_PENDING_DISASSOC_CB BIT(29)
  31 #define WLAN_STA_PENDING_DEAUTH_CB BIT(30)
  32 #define WLAN_STA_NONERP BIT(31)
  33
  34 /* Maximum number of supported rates (from both Supported Rates and Extended
  35  * Supported Rates IEs). */
  36 #define WLAN_SUPP_RATES_MAX 32
  37
  38
  39 struct sta_info {
  40         struct sta_info *next; /* next entry in sta list */
  41         struct sta_info *hnext; /* next entry in hash table list */
  42         u8 addr[6];
  43         u16 aid; /* STA's unique AID (1 .. 2007) or 0 if not yet assigned */
  44         u32 flags; /* Bitfield of WLAN_STA_* */
  45         u16 capability;
  46         u16 listen_interval; /* or beacon_int for APs */
  47         u8 supported_rates[WLAN_SUPP_RATES_MAX];
  48         int supported_rates_len;
  49         u8 qosinfo; /* Valid when WLAN_STA_WMM is set */
  50
  51         unsigned int nonerp_set:1;
  52         unsigned int no_short_slot_time_set:1;
  53         unsigned int no_short_preamble_set:1;
  54         unsigned int no_ht_gf_set:1;
  55         unsigned int no_ht_set:1;
  56         unsigned int ht_20mhz_set:1;
  57         unsigned int no_p2p_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         u16 deauth_reason;
  67         u16 disassoc_reason;
  68
  69         /* IEEE 802.1X related data */
  70         struct eapol_state_machine *eapol_sm;
  71
  72         /* IEEE 802.11f (IAPP) related data */
  73         struct ieee80211_mgmt *last_assoc_req;
  74
  75         u32 acct_session_id_hi;
  76         u32 acct_session_id_lo;
  77         time_t acct_session_start;
  78         int acct_session_started;
  79         int acct_terminate_cause; /* Acct-Terminate-Cause */
  80         int acct_interim_interval; /* Acct-Interim-Interval */
  81
  82         unsigned long last_rx_bytes;
  83         unsigned long last_tx_bytes;
  84         u32 acct_input_gigawords; /* Acct-Input-Gigawords */
  85         u32 acct_output_gigawords; /* Acct-Output-Gigawords */
  86
  87         u8 *challenge; /* IEEE 802.11 Shared Key Authentication Challenge */
  88
  89         struct wpa_state_machine *wpa_sm;
  90         struct rsn_preauth_interface *preauth_iface;
  91
  92         struct hostapd_ssid *ssid; /* SSID selection based on (Re)AssocReq */
  93         struct hostapd_ssid *ssid_probe; /* SSID selection based on ProbeReq */
  94
  95         int vlan_id;
  96         u8 *psk; /* PSK from RADIUS authentication server */
  97
  98         struct ieee80211_ht_capabilities *ht_capabilities;
  99
 100 #ifdef CONFIG_IEEE80211W
 101         int sa_query_count; /* number of pending SA Query requests;
 102                              * 0 = no SA Query in progress */
 103         int sa_query_timed_out;
 104         u8 *sa_query_trans_id; /* buffer of WLAN_SA_QUERY_TR_ID_LEN *
 105                                 * sa_query_count octets of pending SA Query
 106                                 * transaction identifiers */
 107         struct os_time sa_query_start;
 108 #endif /* CONFIG_IEEE80211W */
 109
 110         struct wpabuf *wps_ie; /* WPS IE from (Re)Association Request */
 111         struct wpabuf *p2p_ie; /* P2P IE from (Re)Association Request */
 112 };
 113
 114
 115 /* Default value for maximum station inactivity. After AP_MAX_INACTIVITY has
 116  * passed since last received frame from the station, a nullfunc data frame is
 117  * sent to the station. If this frame is not acknowledged and no other frames
 118  * have been received, the station will be disassociated after
 119  * AP_DISASSOC_DELAY seconds. Similarly, the station will be deauthenticated
 120  * after AP_DEAUTH_DELAY seconds has passed after disassociation. */
 121 #define AP_MAX_INACTIVITY (5 * 60)
 122 #define AP_DISASSOC_DELAY (1)
 123 #define AP_DEAUTH_DELAY (1)
 124 /* Number of seconds to keep STA entry with Authenticated flag after it has
 125  * been disassociated. */
 126 #define AP_MAX_INACTIVITY_AFTER_DISASSOC (1 * 30)
 127 /* Number of seconds to keep STA entry after it has been deauthenticated. */
 128 #define AP_MAX_INACTIVITY_AFTER_DEAUTH (1 * 5)
 129
 130
 131 struct hostapd_data;
 132
 133 int ap_for_each_sta(struct hostapd_data *hapd,
 134                     int (*cb)(struct hostapd_data *hapd, struct sta_info *sta,
 135                               void *ctx),
 136                     void *ctx);
 137 struct sta_info * ap_get_sta(struct hostapd_data *hapd, const u8 *sta);
 138 void ap_sta_hash_add(struct hostapd_data *hapd, struct sta_info *sta);
 139 void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta);
 140 void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta);
 141 void hostapd_free_stas(struct hostapd_data *hapd);
 142 void ap_handle_timer(void *eloop_ctx, void *timeout_ctx);
 143 void ap_sta_session_timeout(struct hostapd_data *hapd, struct sta_info *sta,
 144                             u32 session_timeout);
 145 void ap_sta_no_session_timeout(struct hostapd_data *hapd,
 146                                struct sta_info *sta);
 147 struct sta_info * ap_sta_add(struct hostapd_data *hapd, const u8 *addr);
 148 void ap_sta_disassociate(struct hostapd_data *hapd, struct sta_info *sta,
 149                          u16 reason);
 150 void ap_sta_deauthenticate(struct hostapd_data *hapd, struct sta_info *sta,
 151                            u16 reason);
 152 int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta,
 153                      int old_vlanid);
 154 void ap_sta_start_sa_query(struct hostapd_data *hapd, struct sta_info *sta);
 155 void ap_sta_stop_sa_query(struct hostapd_data *hapd, struct sta_info *sta);
 156 int ap_check_sa_query_timeout(struct hostapd_data *hapd, struct sta_info *sta);
 157 void ap_sta_disconnect(struct hostapd_data *hapd, struct sta_info *sta,
 158                        const u8 *addr, u16 reason);
 159
 160 void ap_sta_set_authorized(struct hostapd_data *hapd,
 161                            struct sta_info *sta, int authorized);
 162 static inline int ap_sta_is_authorized(struct sta_info *sta)
 163 {
 164         return sta->flags & WLAN_STA_AUTHORIZED;
 165 }
 166
 167 void ap_sta_deauth_cb(struct hostapd_data *hapd, struct sta_info *sta);
 168 void ap_sta_disassoc_cb(struct hostapd_data *hapd, struct sta_info *sta);
 169
 170 #endif /* STA_INFO_H */