1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
/*
* WPA Supplicant - Scanning
* Copyright (c) 2003-2014, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#ifndef SCAN_H
#define SCAN_H
/*
* Noise floor values to use when we have signal strength
* measurements, but no noise floor measurements. These values were
* measured in an office environment with many APs.
*/
#define DEFAULT_NOISE_FLOOR_2GHZ (-89)
#define DEFAULT_NOISE_FLOOR_5GHZ (-92)
#define DEFAULT_NOISE_FLOOR_6GHZ (-92)
/*
* Channels with a great SNR can operate at full rate. What is a great SNR?
* This doc https://supportforums.cisco.com/docs/DOC-12954 says, "the general
* rule of thumb is that any SNR above 20 is good." This one
* http://www.cisco.com/en/US/tech/tk722/tk809/technologies_q_and_a_item09186a00805e9a96.shtml#qa23
* recommends 25 as a minimum SNR for 54 Mbps data rate. The estimates used in
* scan_est_throughput() allow even smaller SNR values for the maximum rates
* (21 for 54 Mbps, 22 for VHT80 MCS9, 24 for HT40 and HT20 MCS7). Use 25 as a
* somewhat conservative value here.
*/
#define GREAT_SNR 25
#define IS_2P4GHZ(n) (n >= 2412 && n <= 2484)
#define IS_5GHZ(n) (n > 4000 && n < 5895)
int wpa_supplicant_enabled_networks(struct wpa_supplicant *wpa_s);
void wpa_supplicant_req_scan(struct wpa_supplicant *wpa_s, int sec, int usec);
int wpa_supplicant_delayed_sched_scan(struct wpa_supplicant *wpa_s,
int sec, int usec);
int wpa_supplicant_req_sched_scan(struct wpa_supplicant *wpa_s);
void wpa_supplicant_cancel_scan(struct wpa_supplicant *wpa_s);
void wpa_supplicant_cancel_delayed_sched_scan(struct wpa_supplicant *wpa_s);
void wpa_supplicant_cancel_sched_scan(struct wpa_supplicant *wpa_s);
void wpa_supplicant_notify_scanning(struct wpa_supplicant *wpa_s,
int scanning);
struct wpa_driver_scan_params;
int wpa_supplicant_trigger_scan(struct wpa_supplicant *wpa_s,
struct wpa_driver_scan_params *params);
struct wpa_scan_results *
wpa_supplicant_get_scan_results(struct wpa_supplicant *wpa_s,
struct scan_info *info, int new_scan);
int wpa_supplicant_update_scan_results(struct wpa_supplicant *wpa_s);
const u8 * wpa_scan_get_ie(const struct wpa_scan_res *res, u8 ie);
const u8 * wpa_scan_get_vendor_ie(const struct wpa_scan_res *res,
u32 vendor_type);
const u8 * wpa_scan_get_vendor_ie_beacon(const struct wpa_scan_res *res,
u32 vendor_type);
struct wpabuf * wpa_scan_get_vendor_ie_multi(const struct wpa_scan_res *res,
u32 vendor_type);
int wpa_supplicant_filter_bssid_match(struct wpa_supplicant *wpa_s,
const u8 *bssid);
void wpa_supplicant_update_scan_int(struct wpa_supplicant *wpa_s, int sec);
void scan_only_handler(struct wpa_supplicant *wpa_s,
struct wpa_scan_results *scan_res);
int wpas_scan_scheduled(struct wpa_supplicant *wpa_s);
struct wpa_driver_scan_params *
wpa_scan_clone_params(const struct wpa_driver_scan_params *src);
void wpa_scan_free_params(struct wpa_driver_scan_params *params);
int wpas_start_pno(struct wpa_supplicant *wpa_s);
int wpas_stop_pno(struct wpa_supplicant *wpa_s);
void wpas_scan_reset_sched_scan(struct wpa_supplicant *wpa_s);
void wpas_scan_restart_sched_scan(struct wpa_supplicant *wpa_s);
void wpas_mac_addr_rand_scan_clear(struct wpa_supplicant *wpa_s,
unsigned int type);
int wpas_mac_addr_rand_scan_set(struct wpa_supplicant *wpa_s,
unsigned int type, const u8 *addr,
const u8 *mask);
int wpas_mac_addr_rand_scan_get_mask(struct wpa_supplicant *wpa_s,
unsigned int type, u8 *mask);
int wpas_abort_ongoing_scan(struct wpa_supplicant *wpa_s);
void filter_scan_res(struct wpa_supplicant *wpa_s,
struct wpa_scan_results *res);
void scan_snr(struct wpa_scan_res *res);
void scan_est_throughput(struct wpa_supplicant *wpa_s,
struct wpa_scan_res *res);
unsigned int wpas_get_est_tpt(const struct wpa_supplicant *wpa_s,
const u8 *ies, size_t ies_len, int rate,
int snr, int freq);
void wpa_supplicant_set_default_scan_ies(struct wpa_supplicant *wpa_s);
int wpa_add_scan_freqs_list(struct wpa_supplicant *wpa_s,
enum hostapd_hw_mode band,
struct wpa_driver_scan_params *params,
bool is_6ghz);
#endif /* SCAN_H */
|
