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wpa_supplicant: Send rejection for unsupported radio measurements

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Send measurement report with the mode field set to incapable in response
to measurement requests with unsupported measurement types.

In addition, measurements requests that request parallel measurements
are rejected since these features are not supported.

Measurement request frames with the enable bit set are ignored since
these are not really requesting measurements and are not supported for
now.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
This commit is contained in:
Avraham Stern 2016-12-28 15:06:38 +02:00 committed by Jouni Malinen
parent 0c73e410d6
commit e1b96e1126
1 changed files with 47 additions and 1 deletions
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48
wpa_supplicant/rrm.c
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@ -279,6 +279,25 @@ int wpas_rrm_send_neighbor_rep_request(struct wpa_supplicant *wpa_s,
}
static int wpas_rrm_report_elem(struct wpabuf *buf, u8 token, u8 mode, u8 type,
const u8 *data, size_t data_len)
{
if (wpabuf_tailroom(buf) < 5 + data_len)
return -1;
wpabuf_put_u8(buf, WLAN_EID_MEASURE_REPORT);
wpabuf_put_u8(buf, 3 + data_len);
wpabuf_put_u8(buf, token);
wpabuf_put_u8(buf, mode);
wpabuf_put_u8(buf, type);
if (data_len)
wpabuf_put_data(buf, data, data_len);
return 0;
}
static struct wpabuf * wpas_rrm_build_lci_report(struct wpa_supplicant *wpa_s,
const u8 *request, size_t len,
struct wpabuf *report)
@ -397,11 +416,25 @@ wpas_rrm_handle_msr_req_element(
wpa_printf(MSG_DEBUG, "Measurement request type %d token %d",
req->type, req->token);
if (req->mode & MEASUREMENT_REQUEST_MODE_ENABLE) {
/* Enable bit is not supported for now */
wpa_printf(MSG_DEBUG, "RRM: Enable bit not supported, ignore");
return 0;
}
if ((req->mode & MEASUREMENT_REQUEST_MODE_PARALLEL) &&
req->type > MEASURE_TYPE_RPI_HIST) {
/* Parallel measurements are not supported for now */
wpa_printf(MSG_DEBUG,
"RRM: Parallel measurements are not supported, reject");
goto reject;
}
switch (req->type) {
case MEASURE_TYPE_LCI:
*buf = wpas_rrm_build_lci_report(wpa_s, &req->token, req->len,
*buf);
break;
return 0;
default:
wpa_printf(MSG_INFO,
"RRM: Unsupported radio measurement type %u",
@ -409,6 +442,19 @@ wpas_rrm_handle_msr_req_element(
break;
}
reject:
if (wpabuf_resize(buf, sizeof(struct rrm_measurement_report_element))) {
wpa_printf(MSG_DEBUG, "RRM: Memory allocation failed");
return -1;
}
if (wpas_rrm_report_elem(*buf, req->token,
MEASUREMENT_REPORT_MODE_REJECT_INCAPABLE,
req->type, NULL, 0) < 0) {
wpa_printf(MSG_DEBUG, "RRM: Failed to add report element");
return -1;
}
return 0;
}