sta_info.h revision 1f69aa52ea2e0a73ac502565df8c666ee49cab6a 
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
45struct 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	u8 qosinfo; /* Valid when WLAN_STA_WMM is set */
56
57	unsigned int nonerp_set:1;
58	unsigned int no_short_slot_time_set:1;
59	unsigned int no_short_preamble_set:1;
60	unsigned int no_ht_gf_set:1;
61	unsigned int no_ht_set:1;
62	unsigned int ht_20mhz_set:1;
63	unsigned int no_p2p_set:1;
64
65	u16 auth_alg;
66	u8 previous_ap[6];
67
68	enum {
69		STA_NULLFUNC = 0, STA_DISASSOC, STA_DEAUTH, STA_REMOVE
70	} timeout_next;
71
72	u16 deauth_reason;
73	u16 disassoc_reason;
74
75	/* IEEE 802.1X related data */
76	struct eapol_state_machine *eapol_sm;
77
78	/* IEEE 802.11f (IAPP) related data */
79	struct ieee80211_mgmt *last_assoc_req;
80
81	u32 acct_session_id_hi;
82	u32 acct_session_id_lo;
83	time_t acct_session_start;
84	int acct_session_started;
85	int acct_terminate_cause; /* Acct-Terminate-Cause */
86	int acct_interim_interval; /* Acct-Interim-Interval */
87
88	unsigned long last_rx_bytes;
89	unsigned long last_tx_bytes;
90	u32 acct_input_gigawords; /* Acct-Input-Gigawords */
91	u32 acct_output_gigawords; /* Acct-Output-Gigawords */
92
93	u8 *challenge; /* IEEE 802.11 Shared Key Authentication Challenge */
94
95	struct wpa_state_machine *wpa_sm;
96	struct rsn_preauth_interface *preauth_iface;
97
98	struct hostapd_ssid *ssid; /* SSID selection based on (Re)AssocReq */
99	struct hostapd_ssid *ssid_probe; /* SSID selection based on ProbeReq */
100
101	int vlan_id;
102	u8 *psk; /* PSK from RADIUS authentication server */
103
104	struct ieee80211_ht_capabilities *ht_capabilities;
105
106#ifdef CONFIG_IEEE80211W
107	int sa_query_count; /* number of pending SA Query requests;
108			     * 0 = no SA Query in progress */
109	int sa_query_timed_out;
110	u8 *sa_query_trans_id; /* buffer of WLAN_SA_QUERY_TR_ID_LEN *
111				* sa_query_count octets of pending SA Query
112				* transaction identifiers */
113	struct os_time sa_query_start;
114#endif /* CONFIG_IEEE80211W */
115
116	struct wpabuf *wps_ie; /* WPS IE from (Re)Association Request */
117	struct wpabuf *p2p_ie; /* P2P IE from (Re)Association Request */
118};
119
120
121/* Default value for maximum station inactivity. After AP_MAX_INACTIVITY has
122 * passed since last received frame from the station, a nullfunc data frame is
123 * sent to the station. If this frame is not acknowledged and no other frames
124 * have been received, the station will be disassociated after
125 * AP_DISASSOC_DELAY seconds. Similarly, the station will be deauthenticated
126 * after AP_DEAUTH_DELAY seconds has passed after disassociation. */
127#define AP_MAX_INACTIVITY (5 * 60)
128#define AP_DISASSOC_DELAY (1)
129#define AP_DEAUTH_DELAY (1)
130/* Number of seconds to keep STA entry with Authenticated flag after it has
131 * been disassociated. */
132#define AP_MAX_INACTIVITY_AFTER_DISASSOC (1 * 30)
133/* Number of seconds to keep STA entry after it has been deauthenticated. */
134#define AP_MAX_INACTIVITY_AFTER_DEAUTH (1 * 5)
135
136
137struct hostapd_data;
138
139int ap_for_each_sta(struct hostapd_data *hapd,
140		    int (*cb)(struct hostapd_data *hapd, struct sta_info *sta,
141			      void *ctx),
142		    void *ctx);
143struct sta_info * ap_get_sta(struct hostapd_data *hapd, const u8 *sta);
144void ap_sta_hash_add(struct hostapd_data *hapd, struct sta_info *sta);
145void ap_free_sta(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);
158int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta,
159		     int old_vlanid);
160void ap_sta_start_sa_query(struct hostapd_data *hapd, struct sta_info *sta);
161void ap_sta_stop_sa_query(struct hostapd_data *hapd, struct sta_info *sta);
162int ap_check_sa_query_timeout(struct hostapd_data *hapd, struct sta_info *sta);
163void ap_sta_disconnect(struct hostapd_data *hapd, struct sta_info *sta,
164		       const u8 *addr, u16 reason);
165
166void ap_sta_set_authorized(struct hostapd_data *hapd,
167			   struct sta_info *sta, int authorized);
168static inline int ap_sta_is_authorized(struct sta_info *sta)
169{
170	return sta->flags & WLAN_STA_AUTHORIZED;
171}
172
173void ap_sta_deauth_cb(struct hostapd_data *hapd, struct sta_info *sta);
174void ap_sta_disassoc_cb(struct hostapd_data *hapd, struct sta_info *sta);
175
176#endif /* STA_INFO_H */
177