1 /*
2  * WPA Supplicant - background scan and roaming interface
3  * Copyright (c) 2009-2010, 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 BGSCAN_H
10 #define BGSCAN_H
11 
12 struct wpa_supplicant;
13 struct wpa_ssid;
14 
15 struct bgscan_ops {
16 	const char *name;
17 
18 	void * (*init)(struct wpa_supplicant *wpa_s, const char *params,
19 		       const struct wpa_ssid *ssid);
20 	void (*deinit)(void *priv);
21 
22 	int (*notify_scan)(void *priv, struct wpa_scan_results *scan_res);
23 	void (*notify_beacon_loss)(void *priv);
24 	void (*notify_signal_change)(void *priv, int above,
25 				     int current_signal,
26 				     int current_noise,
27 				     int current_txrate);
28 };
29 
30 #ifdef CONFIG_BGSCAN
31 
32 int bgscan_init(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
33 		const char *name);
34 void bgscan_deinit(struct wpa_supplicant *wpa_s);
35 int bgscan_notify_scan(struct wpa_supplicant *wpa_s,
36 		       struct wpa_scan_results *scan_res);
37 void bgscan_notify_beacon_loss(struct wpa_supplicant *wpa_s);
38 void bgscan_notify_signal_change(struct wpa_supplicant *wpa_s, int above,
39 				 int current_signal, int current_noise,
40 				 int current_txrate);
41 
42 /* Available bgscan modules */
43 
44 #ifdef CONFIG_BGSCAN_SIMPLE
45 extern const struct bgscan_ops bgscan_simple_ops;
46 #endif /* CONFIG_BGSCAN_SIMPLE */
47 #ifdef CONFIG_BGSCAN_LEARN
48 extern const struct bgscan_ops bgscan_learn_ops;
49 #endif /* CONFIG_BGSCAN_LEARN */
50 
51 #else /* CONFIG_BGSCAN */
52 
bgscan_init(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,const char name)53 static inline int bgscan_init(struct wpa_supplicant *wpa_s,
54 			      struct wpa_ssid *ssid, const char name)
55 {
56 	return 0;
57 }
58 
bgscan_deinit(struct wpa_supplicant * wpa_s)59 static inline void bgscan_deinit(struct wpa_supplicant *wpa_s)
60 {
61 }
62 
bgscan_notify_scan(struct wpa_supplicant * wpa_s,struct wpa_scan_results * scan_res)63 static inline int bgscan_notify_scan(struct wpa_supplicant *wpa_s,
64 				     struct wpa_scan_results *scan_res)
65 {
66 	return 0;
67 }
68 
bgscan_notify_beacon_loss(struct wpa_supplicant * wpa_s)69 static inline void bgscan_notify_beacon_loss(struct wpa_supplicant *wpa_s)
70 {
71 }
72 
bgscan_notify_signal_change(struct wpa_supplicant * wpa_s,int above,int current_signal,int current_noise,int current_txrate)73 static inline void bgscan_notify_signal_change(struct wpa_supplicant *wpa_s,
74 					       int above, int current_signal,
75 					       int current_noise,
76 					       int current_txrate)
77 {
78 }
79 
80 #endif /* CONFIG_BGSCAN */
81 
82 #endif /* BGSCAN_H */
83