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/*
* WPA Supplicant - background scan and roaming interface
* Copyright (c) 2009-2010, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "includes.h"
#include "common.h"
#include "wpa_supplicant_i.h"
#include "config_ssid.h"
#include "bgscan.h"
#ifdef CONFIG_BGSCAN_SIMPLE
extern const struct bgscan_ops bgscan_simple_ops;
#endif /* CONFIG_BGSCAN_SIMPLE */
#ifdef CONFIG_BGSCAN_LEARN
extern const struct bgscan_ops bgscan_learn_ops;
#endif /* CONFIG_BGSCAN_LEARN */
static const struct bgscan_ops * bgscan_modules[] = {
#ifdef CONFIG_BGSCAN_SIMPLE
&bgscan_simple_ops,
#endif /* CONFIG_BGSCAN_SIMPLE */
#ifdef CONFIG_BGSCAN_LEARN
&bgscan_learn_ops,
#endif /* CONFIG_BGSCAN_LEARN */
NULL
};
int bgscan_init(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid)
{
const char *name = ssid->bgscan;
const char *params;
size_t nlen;
int i;
const struct bgscan_ops *ops = NULL;
bgscan_deinit(wpa_s);
if (name == NULL)
return 0;
params = os_strchr(name, ':');
if (params == NULL) {
params = "";
nlen = os_strlen(name);
} else {
nlen = params - name;
params++;
}
for (i = 0; bgscan_modules[i]; i++) {
if (os_strncmp(name, bgscan_modules[i]->name, nlen) == 0) {
ops = bgscan_modules[i];
break;
}
}
if (ops == NULL) {
wpa_printf(MSG_ERROR, "bgscan: Could not find module "
"matching the parameter '%s'", name);
return -1;
}
wpa_s->bgscan_priv = ops->init(wpa_s, params, ssid);
if (wpa_s->bgscan_priv == NULL)
return -1;
wpa_s->bgscan = ops;
wpa_printf(MSG_DEBUG, "bgscan: Initialized module '%s' with "
"parameters '%s'", ops->name, params);
return 0;
}
void bgscan_deinit(struct wpa_supplicant *wpa_s)
{
if (wpa_s->bgscan && wpa_s->bgscan_priv) {
wpa_printf(MSG_DEBUG, "bgscan: Deinitializing module '%s'",
wpa_s->bgscan->name);
wpa_s->bgscan->deinit(wpa_s->bgscan_priv);
wpa_s->bgscan = NULL;
wpa_s->bgscan_priv = NULL;
}
}
int bgscan_notify_scan(struct wpa_supplicant *wpa_s,
struct wpa_scan_results *scan_res)
{
if (wpa_s->bgscan && wpa_s->bgscan_priv)
return wpa_s->bgscan->notify_scan(wpa_s->bgscan_priv,
scan_res);
return 0;
}
void bgscan_notify_beacon_loss(struct wpa_supplicant *wpa_s)
{
if (wpa_s->bgscan && wpa_s->bgscan_priv)
wpa_s->bgscan->notify_beacon_loss(wpa_s->bgscan_priv);
}
void bgscan_notify_signal_change(struct wpa_supplicant *wpa_s, int above,
int current_signal, int current_noise,
int current_txrate)
{
if (wpa_s->bgscan && wpa_s->bgscan_priv)
wpa_s->bgscan->notify_signal_change(wpa_s->bgscan_priv, above,
current_signal,
current_noise,
current_txrate);
}
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