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hostapd: Update BSS load update period dynamically

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Recalculate the timeout value for each event instead of calculating this
once and then not allowing the timeout configuration to be changed
without fully stopping and restarting the interface.

This allows the bss_load_update_period configuration parameter to be
modified while a BSS continues operating.

Signed-off-by: Bhagavathi Perumal S <bperumal@qti.qualcomm.com>
This commit is contained in:
Bhagavathi Perumal S 2017-12-04 14:52:20 +05:30 committed by Jouni Malinen
parent 778d87054e
commit 802c0fd0c3
2 changed files with 27 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
src/ap/bss_load.c
View File

@ -16,6 +16,29 @@
#include "beacon.h" #include "beacon.h"
static int get_bss_load_update_timeout(struct hostapd_data *hapd,
unsigned int *sec, unsigned int *usec)
{
unsigned int update_period = hapd->conf->bss_load_update_period;
unsigned int beacon_int = hapd->iconf->beacon_int;
unsigned int update_timeout;
if (!update_period || !beacon_int) {
wpa_printf(MSG_ERROR,
"BSS Load: Invalid BSS load update configuration (period=%u beacon_int=%u)",
update_period, beacon_int);
return -1;
}
update_timeout = update_period * beacon_int;
*sec = ((update_timeout / 1000) * 1024) / 1000;
*usec = (update_timeout % 1000) * 1024;
return 0;
}
static void update_channel_utilization(void *eloop_data, void *user_data) static void update_channel_utilization(void *eloop_data, void *user_data)
{ {
struct hostapd_data *hapd = eloop_data; struct hostapd_data *hapd = eloop_data;
@ -33,8 +56,9 @@ static void update_channel_utilization(void *eloop_data, void *user_data)
ieee802_11_set_beacon(hapd); ieee802_11_set_beacon(hapd);
sec = ((hapd->bss_load_update_timeout / 1000) * 1024) / 1000; if (get_bss_load_update_timeout(hapd, &sec, &usec) < 0)
usec = (hapd->bss_load_update_timeout % 1000) * 1024; return;
eloop_register_timeout(sec, usec, update_channel_utilization, hapd, eloop_register_timeout(sec, usec, update_channel_utilization, hapd,
NULL); NULL);
} }
@ -42,17 +66,11 @@ static void update_channel_utilization(void *eloop_data, void *user_data)
int bss_load_update_init(struct hostapd_data *hapd) 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; unsigned int sec, usec;
if (!conf->bss_load_update_period || !iconf->beacon_int) if (get_bss_load_update_timeout(hapd, &sec, &usec) < 0)
return -1; 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, eloop_register_timeout(sec, usec, update_channel_utilization, hapd,
NULL); NULL);
return 0; return 0;

3
src/ap/hostapd.h
View File

@ -263,9 +263,6 @@ struct hostapd_data {
unsigned int cs_c_off_ecsa_beacon; unsigned int cs_c_off_ecsa_beacon;
unsigned int cs_c_off_ecsa_proberesp; unsigned int cs_c_off_ecsa_proberesp;
/* BSS Load */
unsigned int bss_load_update_timeout;
#ifdef CONFIG_P2P #ifdef CONFIG_P2P
struct p2p_data *p2p; struct p2p_data *p2p;
struct p2p_group *p2p_group; struct p2p_group *p2p_group;