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WNM: Configurable BSS Max Idle Period management on AP

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Allow AP's behavior for BSS Max Idle Period management to be configured.
Previously, this was automatically enabled for all CONFIG_WNM_AP=y
builds. This can now be changed with the new hostapd configuration
parameter bss_max_idle:
0 = BSS Max Idle Period management disabled
1 = BSS Max Idle Period management enabled
    (default and the previous behavior)
2 = BSS Max Idle Period management enabled with requirement for
    protected keep-alive frames

Signed-off-by: Jouni Malinen <quic_jouni@quicinc.com>
This commit is contained in:
Jouni Malinen 2024-05-29 12:41:51 +03:00 committed by Jouni Malinen
parent 7566370a96
commit 846b1d618c
5 changed files with 23 additions and 2 deletions
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9
hostapd/config_file.c
View file

@ -2549,6 +2549,15 @@ static int hostapd_config_fill(struct hostapd_config *conf,
bss->ap_max_inactivity = atoi(pos);
} else if (os_strcmp(buf, "skip_inactivity_poll") == 0) {
bss->skip_inactivity_poll = atoi(pos);
} else if (os_strcmp(buf, "bss_max_idle") == 0) {
int val = atoi(pos);
if (val < 0 || val > 2) {
wpa_printf(MSG_ERROR,
"Line %d: Invalid bss_max_idle value", line);
return 1;
}
bss->bss_max_idle = val;
} else if (os_strcmp(buf, "config_id") == 0) {
os_free(bss->config_id);
bss->config_id = os_strdup(pos);

7
hostapd/hostapd.conf
View file

@ -522,6 +522,13 @@ wmm_ac_vo_acm=0
# even if they are still in range of the AP. This can be done by setting
# skip_inactivity_poll to 1 (default 0).
#skip_inactivity_poll=0
#
# BSS max idle period management
# 0 = disabled (do not advertise and manage BSS max idle period)
# 1 = enabled (advertise and manage BSS max idle period; default)
# 2 = enabled requiring protected frames (advertise and manage BSS max idle
# period and require STAs to use protected keep-alive frames)
#bss_max_idle=1
# Disassociate stations based on excessive transmission failures or other
# indications of connection loss. This depends on the driver capabilities and

1
src/ap/ap_config.c
View file

@ -92,6 +92,7 @@ void hostapd_config_defaults_bss(struct hostapd_bss_config *bss)
bss->eap_sim_id = 3;
bss->eap_sim_aka_fast_reauth_limit = 1000;
bss->ap_max_inactivity = AP_MAX_INACTIVITY;
bss->bss_max_idle = 1;
bss->eapol_version = EAPOL_VERSION;
bss->max_listen_interval = 65535;

1
src/ap/ap_config.h
View file

@ -465,6 +465,7 @@ struct hostapd_bss_config {
*/
int ap_max_inactivity;
int bss_max_idle;
int ignore_broadcast_ssid;
int no_probe_resp_if_max_sta;

7
src/ap/ieee802_11_shared.c
View file

@ -742,7 +742,8 @@ u8 * hostapd_eid_bss_max_idle_period(struct hostapd_data *hapd, u8 *eid)
u8 *pos = eid;
#ifdef CONFIG_WNM_AP
if (hapd->conf->ap_max_inactivity > 0) {
if (hapd->conf->ap_max_inactivity > 0 &&
hapd->conf->bss_max_idle) {
unsigned int val;
*pos++ = WLAN_EID_BSS_MAX_IDLE_PERIOD;
*pos++ = 3;
@ -757,7 +758,9 @@ u8 * hostapd_eid_bss_max_idle_period(struct hostapd_data *hapd, u8 *eid)
val = 65535;
WPA_PUT_LE16(pos, val);
pos += 2;
*pos++ = 0x00; /* TODO: Protected Keep-Alive Required */
/* Set the Protected Keep-Alive Required bit based on
* configuration */
*pos++ = hapd->conf->bss_max_idle == 2 ? BIT(0) : 0x00;
}
#endif /* CONFIG_WNM_AP */