ec8f36afca
The new "bss_load_update_period" parameter can be used to configure hostapd to advertise its BSS Load element in Beacon and Probe Response frames. This parameter is in the units of BUs (Beacon Units). When enabled, the STA Count and the Channel Utilization value will be updated periodically in the BSS Load element. The AAC is set to 0 sinze explicit admission control is not supported. Channel Utilization is calculated based on the channel survey information from the driver and as such, requires a driver that supports providing that information for the current operating channel. Signed-off-by: Kyeyoon Park <kyeyoonp@qca.qualcomm.com>
66 lines
1.6 KiB
C
66 lines
1.6 KiB
C
/*
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* BSS Load Element / Channel Utilization
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* Copyright (c) 2014, Qualcomm Atheros, Inc.
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#include "utils/includes.h"
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#include "utils/common.h"
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#include "utils/eloop.h"
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#include "hostapd.h"
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#include "bss_load.h"
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#include "ap_drv_ops.h"
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#include "beacon.h"
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static void update_channel_utilization(void *eloop_data, void *user_data)
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{
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struct hostapd_data *hapd = eloop_data;
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unsigned int sec, usec;
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int err;
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if (!(hapd->beacon_set_done && hapd->started))
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return;
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err = hostapd_drv_get_survey(hapd, hapd->iface->freq);
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if (err) {
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wpa_printf(MSG_ERROR, "BSS Load: Failed to get survey data");
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return;
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}
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ieee802_11_set_beacon(hapd);
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sec = ((hapd->bss_load_update_timeout / 1000) * 1024) / 1000;
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usec = (hapd->bss_load_update_timeout % 1000) * 1024;
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eloop_register_timeout(sec, usec, update_channel_utilization, hapd,
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NULL);
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}
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int bss_load_update_init(struct hostapd_data *hapd)
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{
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struct hostapd_bss_config *conf = hapd->conf;
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struct hostapd_config *iconf = hapd->iconf;
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unsigned int sec, usec;
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if (!conf->bss_load_update_period || !iconf->beacon_int)
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return -1;
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hapd->bss_load_update_timeout = conf->bss_load_update_period *
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iconf->beacon_int;
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sec = ((hapd->bss_load_update_timeout / 1000) * 1024) / 1000;
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usec = (hapd->bss_load_update_timeout % 1000) * 1024;
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eloop_register_timeout(sec, usec, update_channel_utilization, hapd,
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NULL);
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return 0;
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}
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void bss_load_update_deinit(struct hostapd_data *hapd)
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{
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eloop_cancel_timeout(update_channel_utilization, hapd, NULL);
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}
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