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Add option to ignore Probe Request frames when RSSI is too low

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Add a new hostapd configuration parameters rssi_ignore_probe_request to
ignore Probe Request frames received with too low RSSI.

Signed-off-by: John Crispin <john@phrozen.org>
This commit is contained in:
John Crispin 2020-08-12 18:55:31 +02:00 committed by Jouni Malinen
parent f2a0101401
commit d83eaa351e
4 changed files with 11 additions and 0 deletions
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2
hostapd/config_file.c
View File

@ -4450,6 +4450,8 @@ static int hostapd_config_fill(struct hostapd_config *conf,
conf->rssi_reject_assoc_rssi = atoi(pos); conf->rssi_reject_assoc_rssi = atoi(pos);
} else if (os_strcmp(buf, "rssi_reject_assoc_timeout") == 0) { } else if (os_strcmp(buf, "rssi_reject_assoc_timeout") == 0) {
conf->rssi_reject_assoc_timeout = atoi(pos); conf->rssi_reject_assoc_timeout = atoi(pos);
} else if (os_strcmp(buf, "rssi_ignore_probe_request") == 0) {
conf->rssi_ignore_probe_request = atoi(pos);
} else if (os_strcmp(buf, "pbss") == 0) { } else if (os_strcmp(buf, "pbss") == 0) {
bss->pbss = atoi(pos); bss->pbss = atoi(pos);
} else if (os_strcmp(buf, "transition_disable") == 0) { } else if (os_strcmp(buf, "transition_disable") == 0) {

4
hostapd/hostapd.conf
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@ -2735,6 +2735,10 @@ own_ip_addr=127.0.0.1
# threshold (range: 0..255, default=30). # threshold (range: 0..255, default=30).
#rssi_reject_assoc_timeout=30 #rssi_reject_assoc_timeout=30
# Ignore Probe Request frames if RSSI is below given threshold (in dBm)
# Allowed range: -60 to -90 dBm; default = 0 (rejection disabled)
#rssi_ignore_probe_request=-75
##### Fast Session Transfer (FST) support ##################################### ##### Fast Session Transfer (FST) support #####################################
# #
# The options in this section are only available when the build configuration # The options in this section are only available when the build configuration

1
src/ap/ap_config.h
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@ -1039,6 +1039,7 @@ struct hostapd_config {
int rssi_reject_assoc_rssi; int rssi_reject_assoc_rssi;
int rssi_reject_assoc_timeout; int rssi_reject_assoc_timeout;
int rssi_ignore_probe_request;
#ifdef CONFIG_AIRTIME_POLICY #ifdef CONFIG_AIRTIME_POLICY
enum { enum {

4
src/ap/beacon.c
View File

@ -818,6 +818,10 @@ void handle_probe_req(struct hostapd_data *hapd,
size_t csa_offs_len; size_t csa_offs_len;
struct radius_sta rad_info; struct radius_sta rad_info;
if (hapd->iconf->rssi_ignore_probe_request && ssi_signal &&
ssi_signal < hapd->iconf->rssi_ignore_probe_request)
return;
if (len < IEEE80211_HDRLEN) if (len < IEEE80211_HDRLEN)
return; return;
ie = ((const u8 *) mgmt) + IEEE80211_HDRLEN; ie = ((const u8 *) mgmt) + IEEE80211_HDRLEN;