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Beacon request through hostapd control interface

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The new control interface command "REQ_BEACON <STA addr>
[req_mode=<mode>] <beacon request>" can now be used to request hostapd
to transmit a measurement request to request a beacon report from an
associated STA. This command returns the assigned dialog token (1-255)
or FAIL on failure.

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2017-01-02 00:31:11 +02:00
parent 73a27a6345
commit 90d9d7c32a
4 changed files with 142 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

1
src/ap/hostapd.h
View file

@ -298,6 +298,7 @@ struct hostapd_data {
struct dl_list nr_db;
u8 beacon_req_token;
u8 lci_req_token;
u8 range_req_token;
unsigned int lci_req_active:1;

96
src/ap/rrm.c
View file

@ -542,3 +542,99 @@ void hostapd_clean_rrm(struct hostapd_data *hapd)
eloop_cancel_timeout(hostapd_range_rep_timeout_handler, hapd, NULL);
hapd->range_req_active = 0;
}
int hostapd_send_beacon_req(struct hostapd_data *hapd, const u8 *addr,
u8 req_mode, const struct wpabuf *req)
{
struct wpabuf *buf;
struct sta_info *sta = ap_get_sta(hapd, addr);
int ret;
enum beacon_report_mode mode;
const u8 *pos;
/* Request data:
* Operating Class (1), Channel Number (1), Randomization Interval (2),
* Measurement Duration (2), Measurement Mode (1), BSSID (6),
* Optional Subelements (variable)
*/
if (wpabuf_len(req) < 13) {
wpa_printf(MSG_INFO, "Beacon request: Too short request data");
return -1;
}
pos = wpabuf_head(req);
mode = pos[6];
if (!sta || !(sta->flags & WLAN_STA_AUTHORIZED)) {
wpa_printf(MSG_INFO,
"Beacon request: " MACSTR " is not connected",
MAC2STR(addr));
return -1;
}
switch (mode) {
case BEACON_REPORT_MODE_PASSIVE:
if (!(sta->rrm_enabled_capa[0] &
WLAN_RRM_CAPS_BEACON_REPORT_PASSIVE)) {
wpa_printf(MSG_INFO,
"Beacon request: " MACSTR
" does not support passive beacon report",
MAC2STR(addr));
return -1;
}
break;
case BEACON_REPORT_MODE_ACTIVE:
if (!(sta->rrm_enabled_capa[0] &
WLAN_RRM_CAPS_BEACON_REPORT_ACTIVE)) {
wpa_printf(MSG_INFO,
"Beacon request: " MACSTR
" does not support active beacon report",
MAC2STR(addr));
return -1;
}
break;
case BEACON_REPORT_MODE_TABLE:
if (!(sta->rrm_enabled_capa[0] &
WLAN_RRM_CAPS_BEACON_REPORT_TABLE)) {
wpa_printf(MSG_INFO,
"Beacon request: " MACSTR
" does not support table beacon report",
MAC2STR(addr));
return -1;
}
break;
default:
wpa_printf(MSG_INFO,
"Beacon request: Unknown measurement mode %d", mode);
return -1;
}
buf = wpabuf_alloc(5 + 2 + 3 + wpabuf_len(req));
if (!buf)
return -1;
hapd->beacon_req_token++;
if (!hapd->beacon_req_token)
hapd->beacon_req_token++;
wpabuf_put_u8(buf, WLAN_ACTION_RADIO_MEASUREMENT);
wpabuf_put_u8(buf, WLAN_RRM_RADIO_MEASUREMENT_REQUEST);
wpabuf_put_u8(buf, hapd->beacon_req_token);
wpabuf_put_le16(buf, 0); /* Number of repetitions */
/* Measurement Request element */
wpabuf_put_u8(buf, WLAN_EID_MEASURE_REQUEST);
wpabuf_put_u8(buf, 3 + wpabuf_len(req));
wpabuf_put_u8(buf, 1); /* Measurement Token */
wpabuf_put_u8(buf, req_mode); /* Measurement Request Mode */
wpabuf_put_u8(buf, MEASURE_TYPE_BEACON); /* Measurement Type */
wpabuf_put_buf(buf, req);
ret = hostapd_drv_send_action(hapd, hapd->iface->freq, 0, addr,
wpabuf_head(buf), wpabuf_len(buf));
wpabuf_free(buf);
if (ret < 0)
return ret;
return hapd->beacon_req_token;
}

2
src/ap/rrm.h
View file

@ -24,5 +24,7 @@ int hostapd_send_range_req(struct hostapd_data *hapd, const u8 *addr,
u16 random_interval, u8 min_ap,
const u8 *responders, unsigned int n_responders);
void hostapd_clean_rrm(struct hostapd_data *hapd);
int hostapd_send_beacon_req(struct hostapd_data *hapd, const u8 *addr,
u8 req_mode, const struct wpabuf *req);
#endif /* RRM_H */