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Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001/*
2 * WPA Supplicant - background scan and roaming interface
3 * Copyright (c) 2009-2010, Jouni Malinen <j@w1.fi>
4 *
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08005 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07007 */
8
9#include "includes.h"
10
11#include "common.h"
12#include "wpa_supplicant_i.h"
13#include "config_ssid.h"
14#include "bgscan.h"
15
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070016
17static const struct bgscan_ops * bgscan_modules[] = {
18#ifdef CONFIG_BGSCAN_SIMPLE
19 &bgscan_simple_ops,
20#endif /* CONFIG_BGSCAN_SIMPLE */
21#ifdef CONFIG_BGSCAN_LEARN
22 &bgscan_learn_ops,
23#endif /* CONFIG_BGSCAN_LEARN */
24 NULL
25};
26
27
Dmitry Shmidtb96dad42013-11-05 10:07:29 -080028int bgscan_init(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
29 const char *name)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070030{
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070031 const char *params;
32 size_t nlen;
33 int i;
34 const struct bgscan_ops *ops = NULL;
35
36 bgscan_deinit(wpa_s);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070037
38 params = os_strchr(name, ':');
39 if (params == NULL) {
40 params = "";
41 nlen = os_strlen(name);
42 } else {
43 nlen = params - name;
44 params++;
45 }
46
47 for (i = 0; bgscan_modules[i]; i++) {
48 if (os_strncmp(name, bgscan_modules[i]->name, nlen) == 0) {
49 ops = bgscan_modules[i];
50 break;
51 }
52 }
53
54 if (ops == NULL) {
55 wpa_printf(MSG_ERROR, "bgscan: Could not find module "
56 "matching the parameter '%s'", name);
57 return -1;
58 }
59
60 wpa_s->bgscan_priv = ops->init(wpa_s, params, ssid);
61 if (wpa_s->bgscan_priv == NULL)
62 return -1;
63 wpa_s->bgscan = ops;
64 wpa_printf(MSG_DEBUG, "bgscan: Initialized module '%s' with "
65 "parameters '%s'", ops->name, params);
66
67 return 0;
68}
69
70
71void bgscan_deinit(struct wpa_supplicant *wpa_s)
72{
73 if (wpa_s->bgscan && wpa_s->bgscan_priv) {
74 wpa_printf(MSG_DEBUG, "bgscan: Deinitializing module '%s'",
75 wpa_s->bgscan->name);
76 wpa_s->bgscan->deinit(wpa_s->bgscan_priv);
77 wpa_s->bgscan = NULL;
78 wpa_s->bgscan_priv = NULL;
79 }
80}
81
82
83int bgscan_notify_scan(struct wpa_supplicant *wpa_s,
84 struct wpa_scan_results *scan_res)
85{
86 if (wpa_s->bgscan && wpa_s->bgscan_priv)
87 return wpa_s->bgscan->notify_scan(wpa_s->bgscan_priv,
88 scan_res);
89 return 0;
90}
91
92
93void bgscan_notify_beacon_loss(struct wpa_supplicant *wpa_s)
94{
95 if (wpa_s->bgscan && wpa_s->bgscan_priv)
96 wpa_s->bgscan->notify_beacon_loss(wpa_s->bgscan_priv);
97}
98
99
100void bgscan_notify_signal_change(struct wpa_supplicant *wpa_s, int above,
101 int current_signal, int current_noise,
102 int current_txrate)
103{
104 if (wpa_s->bgscan && wpa_s->bgscan_priv)
105 wpa_s->bgscan->notify_signal_change(wpa_s->bgscan_priv, above,
106 current_signal,
107 current_noise,
108 current_txrate);
109}