sta_info.h revision c5ec7f57ead87efa365800228aa0b09a12d9e6c4 
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
39struct 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
131struct hostapd_data;
132
133int 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);
137struct sta_info * ap_get_sta(struct hostapd_data *hapd, const u8 *sta);
138void ap_sta_hash_add(struct hostapd_data *hapd, struct sta_info *sta);
139void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta);
140void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta);
141void hostapd_free_stas(struct hostapd_data *hapd);
142void ap_handle_timer(void *eloop_ctx, void *timeout_ctx);
143void ap_sta_session_timeout(struct hostapd_data *hapd, struct sta_info *sta,
144			    u32 session_timeout);
145void ap_sta_no_session_timeout(struct hostapd_data *hapd,
146			       struct sta_info *sta);
147struct sta_info * ap_sta_add(struct hostapd_data *hapd, const u8 *addr);
148void ap_sta_disassociate(struct hostapd_data *hapd, struct sta_info *sta,
149			 u16 reason);
150void ap_sta_deauthenticate(struct hostapd_data *hapd, struct sta_info *sta,
151			   u16 reason);
152int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta,
153		     int old_vlanid);
154void ap_sta_start_sa_query(struct hostapd_data *hapd, struct sta_info *sta);
155void ap_sta_stop_sa_query(struct hostapd_data *hapd, struct sta_info *sta);
156int ap_check_sa_query_timeout(struct hostapd_data *hapd, struct sta_info *sta);
157void ap_sta_disconnect(struct hostapd_data *hapd, struct sta_info *sta,
158		       const u8 *addr, u16 reason);
159
160void ap_sta_set_authorized(struct hostapd_data *hapd,
161			   struct sta_info *sta, int authorized);
162static inline int ap_sta_is_authorized(struct sta_info *sta)
163{
164	return sta->flags & WLAN_STA_AUTHORIZED;
165}
166
167void ap_sta_deauth_cb(struct hostapd_data *hapd, struct sta_info *sta);
168void ap_sta_disassoc_cb(struct hostapd_data *hapd, struct sta_info *sta);
169
170#endif /* STA_INFO_H */
171