hostap/src/ap/bss_load.c

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/*
* BSS Load Element / Channel Utilization
* Copyright (c) 2014, Qualcomm Atheros, Inc.
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "utils/includes.h"
#include "utils/common.h"
#include "utils/eloop.h"
#include "hostapd.h"
#include "bss_load.h"
#include "ap_drv_ops.h"
#include "beacon.h"
static void update_channel_utilization(void *eloop_data, void *user_data)
{
struct hostapd_data *hapd = eloop_data;
unsigned int sec, usec;
int err;
if (!(hapd->beacon_set_done && hapd->started))
return;
err = hostapd_drv_get_survey(hapd, hapd->iface->freq);
if (err) {
wpa_printf(MSG_ERROR, "BSS Load: Failed to get survey data");
return;
}
ieee802_11_set_beacon(hapd);
sec = ((hapd->bss_load_update_timeout / 1000) * 1024) / 1000;
usec = (hapd->bss_load_update_timeout % 1000) * 1024;
eloop_register_timeout(sec, usec, update_channel_utilization, hapd,
NULL);
}
int bss_load_update_init(struct hostapd_data *hapd)
{
struct hostapd_bss_config *conf = hapd->conf;
struct hostapd_config *iconf = hapd->iconf;
unsigned int sec, usec;
if (!conf->bss_load_update_period || !iconf->beacon_int)
return -1;
hapd->bss_load_update_timeout = conf->bss_load_update_period *
iconf->beacon_int;
sec = ((hapd->bss_load_update_timeout / 1000) * 1024) / 1000;
usec = (hapd->bss_load_update_timeout % 1000) * 1024;
eloop_register_timeout(sec, usec, update_channel_utilization, hapd,
NULL);
return 0;
}
void bss_load_update_deinit(struct hostapd_data *hapd)
{
eloop_cancel_timeout(update_channel_utilization, hapd, NULL);
}