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Commit | Line | Data |
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9ba9fa07 JM |
1 | /* |
2 | * WPA Supplicant - Scanning | |
dd43aaa5 | 3 | * Copyright (c) 2003-2014, Jouni Malinen <j@w1.fi> |
9ba9fa07 | 4 | * |
0f3d578e JM |
5 | * This software may be distributed under the terms of the BSD license. |
6 | * See README for more details. | |
9ba9fa07 JM |
7 | */ |
8 | ||
9 | #ifndef SCAN_H | |
10 | #define SCAN_H | |
11 | ||
ef1a45f2 EG |
12 | /* |
13 | * Noise floor values to use when we have signal strength | |
14 | * measurements, but no noise floor measurements. These values were | |
15 | * measured in an office environment with many APs. | |
16 | */ | |
17 | #define DEFAULT_NOISE_FLOOR_2GHZ (-89) | |
18 | #define DEFAULT_NOISE_FLOOR_5GHZ (-92) | |
19 | ||
20 | /* | |
21 | * Channels with a great SNR can operate at full rate. What is a great SNR? | |
22 | * This doc https://supportforums.cisco.com/docs/DOC-12954 says, "the general | |
23 | * rule of thumb is that any SNR above 20 is good." This one | |
24 | * http://www.cisco.com/en/US/tech/tk722/tk809/technologies_q_and_a_item09186a00805e9a96.shtml#qa23 | |
25 | * recommends 25 as a minimum SNR for 54 Mbps data rate. The estimates used in | |
26 | * scan_est_throughput() allow even smaller SNR values for the maximum rates | |
27 | * (21 for 54 Mbps, 22 for VHT80 MCS9, 24 for HT40 and HT20 MCS7). Use 25 as a | |
28 | * somewhat conservative value here. | |
29 | */ | |
30 | #define GREAT_SNR 25 | |
31 | ||
32 | #define IS_5GHZ(n) (n > 4000) | |
33 | ||
349493bd | 34 | int wpa_supplicant_enabled_networks(struct wpa_supplicant *wpa_s); |
9ba9fa07 | 35 | void wpa_supplicant_req_scan(struct wpa_supplicant *wpa_s, int sec, int usec); |
6a90053c LC |
36 | int wpa_supplicant_delayed_sched_scan(struct wpa_supplicant *wpa_s, |
37 | int sec, int usec); | |
cbdf3507 | 38 | int wpa_supplicant_req_sched_scan(struct wpa_supplicant *wpa_s); |
9ba9fa07 | 39 | void wpa_supplicant_cancel_scan(struct wpa_supplicant *wpa_s); |
831770bf | 40 | void wpa_supplicant_cancel_delayed_sched_scan(struct wpa_supplicant *wpa_s); |
cbdf3507 | 41 | void wpa_supplicant_cancel_sched_scan(struct wpa_supplicant *wpa_s); |
9ba9fa07 JM |
42 | void wpa_supplicant_notify_scanning(struct wpa_supplicant *wpa_s, |
43 | int scanning); | |
44 | struct wpa_driver_scan_params; | |
45 | int wpa_supplicant_trigger_scan(struct wpa_supplicant *wpa_s, | |
46 | struct wpa_driver_scan_params *params); | |
47 | struct wpa_scan_results * | |
48 | wpa_supplicant_get_scan_results(struct wpa_supplicant *wpa_s, | |
49 | struct scan_info *info, int new_scan); | |
50 | int wpa_supplicant_update_scan_results(struct wpa_supplicant *wpa_s); | |
d1f9c410 | 51 | const u8 * wpa_scan_get_ie(const struct wpa_scan_res *res, u8 ie); |
9ba9fa07 JM |
52 | const u8 * wpa_scan_get_vendor_ie(const struct wpa_scan_res *res, |
53 | u32 vendor_type); | |
aaeb9c98 JM |
54 | const u8 * wpa_scan_get_vendor_ie_beacon(const struct wpa_scan_res *res, |
55 | u32 vendor_type); | |
9ba9fa07 JM |
56 | struct wpabuf * wpa_scan_get_vendor_ie_multi(const struct wpa_scan_res *res, |
57 | u32 vendor_type); | |
d445a5cd JM |
58 | int wpa_supplicant_filter_bssid_match(struct wpa_supplicant *wpa_s, |
59 | const u8 *bssid); | |
9e737f08 | 60 | void wpa_supplicant_update_scan_int(struct wpa_supplicant *wpa_s, int sec); |
66fe0f70 DS |
61 | void scan_only_handler(struct wpa_supplicant *wpa_s, |
62 | struct wpa_scan_results *scan_res); | |
407be00b | 63 | int wpas_scan_scheduled(struct wpa_supplicant *wpa_s); |
dd43aaa5 JM |
64 | struct wpa_driver_scan_params * |
65 | wpa_scan_clone_params(const struct wpa_driver_scan_params *src); | |
66 | void wpa_scan_free_params(struct wpa_driver_scan_params *params); | |
737e7a08 AB |
67 | int wpas_start_pno(struct wpa_supplicant *wpa_s); |
68 | int wpas_stop_pno(struct wpa_supplicant *wpa_s); | |
be7ebd89 | 69 | void wpas_scan_reset_sched_scan(struct wpa_supplicant *wpa_s); |
5bb7327a | 70 | void wpas_scan_restart_sched_scan(struct wpa_supplicant *wpa_s); |
9ba9fa07 | 71 | |
56c76fa5 IP |
72 | void wpas_mac_addr_rand_scan_clear(struct wpa_supplicant *wpa_s, |
73 | unsigned int type); | |
74 | int wpas_mac_addr_rand_scan_set(struct wpa_supplicant *wpa_s, | |
75 | unsigned int type, const u8 *addr, | |
76 | const u8 *mask); | |
10f8351d EC |
77 | int wpas_mac_addr_rand_scan_get_mask(struct wpa_supplicant *wpa_s, |
78 | unsigned int type, u8 *mask); | |
4ead7cfd | 79 | int wpas_abort_ongoing_scan(struct wpa_supplicant *wpa_s); |
2f195639 KV |
80 | void filter_scan_res(struct wpa_supplicant *wpa_s, |
81 | struct wpa_scan_results *res); | |
82 | void scan_snr(struct wpa_scan_res *res); | |
83 | void scan_est_throughput(struct wpa_supplicant *wpa_s, | |
84 | struct wpa_scan_res *res); | |
ad06ac0b EG |
85 | unsigned int wpas_get_est_tpt(const struct wpa_supplicant *wpa_s, |
86 | const u8 *ies, size_t ies_len, int rate, | |
87 | int snr); | |
cc9985d1 | 88 | void wpa_supplicant_set_default_scan_ies(struct wpa_supplicant *wpa_s); |
56c76fa5 | 89 | |
9ba9fa07 | 90 | #endif /* SCAN_H */ |