sta_info.h revision 04949598a23f501be6eec21697465fd46a28840a 
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_GAS BIT(17)
31#define WLAN_STA_PENDING_DISASSOC_CB BIT(29)
32#define WLAN_STA_PENDING_DEAUTH_CB BIT(30)
33#define WLAN_STA_NONERP BIT(31)
34
35/* Maximum number of supported rates (from both Supported Rates and Extended
36 * Supported Rates IEs). */
37#define WLAN_SUPP_RATES_MAX 32
38
39
40struct sta_info {
41	struct sta_info *next; /* next entry in sta list */
42	struct sta_info *hnext; /* next entry in hash table list */
43	u8 addr[6];
44	u16 aid; /* STA's unique AID (1 .. 2007) or 0 if not yet assigned */
45	u32 flags; /* Bitfield of WLAN_STA_* */
46	u16 capability;
47	u16 listen_interval; /* or beacon_int for APs */
48	u8 supported_rates[WLAN_SUPP_RATES_MAX];
49	int supported_rates_len;
50	u8 qosinfo; /* Valid when WLAN_STA_WMM is set */
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	unsigned int no_p2p_set:1;
59
60	u16 auth_alg;
61	u8 previous_ap[6];
62
63	enum {
64		STA_NULLFUNC = 0, STA_DISASSOC, STA_DEAUTH, STA_REMOVE
65	} timeout_next;
66
67	u16 deauth_reason;
68	u16 disassoc_reason;
69
70	/* IEEE 802.1X related data */
71	struct eapol_state_machine *eapol_sm;
72
73	/* IEEE 802.11f (IAPP) related data */
74	struct ieee80211_mgmt *last_assoc_req;
75
76	u32 acct_session_id_hi;
77	u32 acct_session_id_lo;
78	time_t acct_session_start;
79	int acct_session_started;
80	int acct_terminate_cause; /* Acct-Terminate-Cause */
81	int acct_interim_interval; /* Acct-Interim-Interval */
82
83	unsigned long last_rx_bytes;
84	unsigned long last_tx_bytes;
85	u32 acct_input_gigawords; /* Acct-Input-Gigawords */
86	u32 acct_output_gigawords; /* Acct-Output-Gigawords */
87
88	u8 *challenge; /* IEEE 802.11 Shared Key Authentication Challenge */
89
90	struct wpa_state_machine *wpa_sm;
91	struct rsn_preauth_interface *preauth_iface;
92
93	struct hostapd_ssid *ssid; /* SSID selection based on (Re)AssocReq */
94	struct hostapd_ssid *ssid_probe; /* SSID selection based on ProbeReq */
95
96	int vlan_id;
97	u8 *psk; /* PSK from RADIUS authentication server */
98
99	struct ieee80211_ht_capabilities *ht_capabilities;
100
101#ifdef CONFIG_IEEE80211W
102	int sa_query_count; /* number of pending SA Query requests;
103			     * 0 = no SA Query in progress */
104	int sa_query_timed_out;
105	u8 *sa_query_trans_id; /* buffer of WLAN_SA_QUERY_TR_ID_LEN *
106				* sa_query_count octets of pending SA Query
107				* transaction identifiers */
108	struct os_time sa_query_start;
109#endif /* CONFIG_IEEE80211W */
110
111#ifdef CONFIG_INTERWORKING
112#define GAS_DIALOG_MAX 8 /* Max concurrent dialog number */
113	struct gas_dialog_info *gas_dialog;
114	u8 gas_dialog_next;
115#endif /* CONFIG_INTERWORKING */
116
117	struct wpabuf *wps_ie; /* WPS IE from (Re)Association Request */
118	struct wpabuf *p2p_ie; /* P2P IE from (Re)Association Request */
119};
120
121
122/* Default value for maximum station inactivity. After AP_MAX_INACTIVITY has
123 * passed since last received frame from the station, a nullfunc data frame is
124 * sent to the station. If this frame is not acknowledged and no other frames
125 * have been received, the station will be disassociated after
126 * AP_DISASSOC_DELAY seconds. Similarly, the station will be deauthenticated
127 * after AP_DEAUTH_DELAY seconds has passed after disassociation. */
128#define AP_MAX_INACTIVITY (5 * 60)
129#define AP_DISASSOC_DELAY (1)
130#define AP_DEAUTH_DELAY (1)
131/* Number of seconds to keep STA entry with Authenticated flag after it has
132 * been disassociated. */
133#define AP_MAX_INACTIVITY_AFTER_DISASSOC (1 * 30)
134/* Number of seconds to keep STA entry after it has been deauthenticated. */
135#define AP_MAX_INACTIVITY_AFTER_DEAUTH (1 * 5)
136
137
138struct hostapd_data;
139
140int ap_for_each_sta(struct hostapd_data *hapd,
141		    int (*cb)(struct hostapd_data *hapd, struct sta_info *sta,
142			      void *ctx),
143		    void *ctx);
144struct sta_info * ap_get_sta(struct hostapd_data *hapd, const u8 *sta);
145void ap_sta_hash_add(struct hostapd_data *hapd, struct sta_info *sta);
146void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta);
147void hostapd_free_stas(struct hostapd_data *hapd);
148void ap_handle_timer(void *eloop_ctx, void *timeout_ctx);
149void ap_sta_session_timeout(struct hostapd_data *hapd, struct sta_info *sta,
150			    u32 session_timeout);
151void ap_sta_no_session_timeout(struct hostapd_data *hapd,
152			       struct sta_info *sta);
153struct sta_info * ap_sta_add(struct hostapd_data *hapd, const u8 *addr);
154void ap_sta_disassociate(struct hostapd_data *hapd, struct sta_info *sta,
155			 u16 reason);
156void ap_sta_deauthenticate(struct hostapd_data *hapd, struct sta_info *sta,
157			   u16 reason);
158#ifdef CONFIG_WPS
159int ap_sta_wps_cancel(struct hostapd_data *hapd,
160		      struct sta_info *sta, void *ctx);
161#endif /* CONFIG_WPS */
162int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta,
163		     int old_vlanid);
164void ap_sta_start_sa_query(struct hostapd_data *hapd, struct sta_info *sta);
165void ap_sta_stop_sa_query(struct hostapd_data *hapd, struct sta_info *sta);
166int ap_check_sa_query_timeout(struct hostapd_data *hapd, struct sta_info *sta);
167void ap_sta_disconnect(struct hostapd_data *hapd, struct sta_info *sta,
168		       const u8 *addr, u16 reason);
169
170void ap_sta_set_authorized(struct hostapd_data *hapd,
171			   struct sta_info *sta, int authorized);
172static inline int ap_sta_is_authorized(struct sta_info *sta)
173{
174	return sta->flags & WLAN_STA_AUTHORIZED;
175}
176
177void ap_sta_deauth_cb(struct hostapd_data *hapd, struct sta_info *sta);
178void ap_sta_disassoc_cb(struct hostapd_data *hapd, struct sta_info *sta);
179
180#endif /* STA_INFO_H */
181