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authorDavid Spinadel <david.spinadel@intel.com>2016-04-06 16:42:13 (GMT)
committerJouni Malinen <j@w1.fi>2016-04-17 09:29:12 (GMT)
commit4a742011abca8a9c185cc40d17783cfa4c9af757 (patch)
tree3c96828460ef94f8f0068768015bd8846b0845f1 /wpa_supplicant
parent220754c5535e89ede0664fa55e6f6cc4e92f0a59 (diff)
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wpa_supplicant: Handle LCI request
Handle radio measurement request that contains LCI request. Send measurement report based on a configurable LCI report element. The LCI report element is configured over the control interface with SET lci <hexdump of the element> and cleared with SET lci "" Signed-off-by: David Spinadel <david.spinadel@intel.com>
Diffstat (limited to 'wpa_supplicant')
-rw-r--r--wpa_supplicant/ctrl_iface.c29
-rw-r--r--wpa_supplicant/events.c8
-rw-r--r--wpa_supplicant/sme.c3
-rw-r--r--wpa_supplicant/wpa_supplicant.c144
-rw-r--r--wpa_supplicant/wpa_supplicant_i.h10
5 files changed, 194 insertions, 0 deletions
diff --git a/wpa_supplicant/ctrl_iface.c b/wpa_supplicant/ctrl_iface.c
index 9320e57..e450e3b 100644
--- a/wpa_supplicant/ctrl_iface.c
+++ b/wpa_supplicant/ctrl_iface.c
@@ -311,6 +311,33 @@ static int wpas_ctrl_set_band(struct wpa_supplicant *wpa_s, char *band)
}
+static int wpas_ctrl_iface_set_lci(struct wpa_supplicant *wpa_s,
+ const char *cmd)
+{
+ struct wpabuf *lci;
+
+ if (*cmd == '\0' || os_strcmp(cmd, "\"\"") == 0) {
+ wpabuf_free(wpa_s->lci);
+ wpa_s->lci = NULL;
+ return 0;
+ }
+
+ lci = wpabuf_parse_bin(cmd);
+ if (!lci)
+ return -1;
+
+ if (os_get_reltime(&wpa_s->lci_time)) {
+ wpabuf_free(lci);
+ return -1;
+ }
+
+ wpabuf_free(wpa_s->lci);
+ wpa_s->lci = lci;
+
+ return 0;
+}
+
+
static int wpa_supplicant_ctrl_iface_set(struct wpa_supplicant *wpa_s,
char *cmd)
{
@@ -497,6 +524,8 @@ static int wpa_supplicant_ctrl_iface_set(struct wpa_supplicant *wpa_s,
} else if (os_strcasecmp(cmd, "mbo_cell_capa") == 0) {
wpas_mbo_update_cell_capa(wpa_s, atoi(value));
#endif /* CONFIG_MBO */
+ } else if (os_strcasecmp(cmd, "lci") == 0) {
+ ret = wpas_ctrl_iface_set_lci(wpa_s, value);
} else {
value[-1] = '=';
ret = wpa_config_process_global(wpa_s->conf, cmd, -1);
diff --git a/wpa_supplicant/events.c b/wpa_supplicant/events.c
index dbc01e2..f9b9cd6 100644
--- a/wpa_supplicant/events.c
+++ b/wpa_supplicant/events.c
@@ -3279,6 +3279,14 @@ static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
#endif /* CONFIG_INTERWORKING */
if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
+ payload[0] == WLAN_RRM_RADIO_MEASUREMENT_REQUEST) {
+ wpas_rrm_handle_radio_measurement_request(wpa_s, mgmt->sa,
+ payload + 1,
+ plen - 1);
+ return;
+ }
+
+ if (category == WLAN_ACTION_RADIO_MEASUREMENT &&
payload[0] == WLAN_RRM_NEIGHBOR_REPORT_RESPONSE) {
wpas_rrm_process_neighbor_rep(wpa_s, payload + 1, plen - 1);
return;
diff --git a/wpa_supplicant/sme.c b/wpa_supplicant/sme.c
index d1c9537..70524cc 100644
--- a/wpa_supplicant/sme.c
+++ b/wpa_supplicant/sme.c
@@ -186,6 +186,9 @@ static void sme_auth_handle_rrm(struct wpa_supplicant *wpa_s,
if (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION)
*pos |= WLAN_RRM_CAPS_LINK_MEASUREMENT;
+ if (wpa_s->lci)
+ pos[1] |= WLAN_RRM_CAPS_LCI_MEASUREMENT;
+
wpa_s->sme.assoc_req_ie_len += rrm_ie_len + 2;
wpa_s->rrm.rrm_used = 1;
}
diff --git a/wpa_supplicant/wpa_supplicant.c b/wpa_supplicant/wpa_supplicant.c
index 1f0fcd0..bf6dfff 100644
--- a/wpa_supplicant/wpa_supplicant.c
+++ b/wpa_supplicant/wpa_supplicant.c
@@ -575,6 +575,9 @@ static void wpa_supplicant_cleanup(struct wpa_supplicant *wpa_s)
#endif /* CONFIG_MBO */
free_bss_tmp_disallowed(wpa_s);
+
+ wpabuf_free(wpa_s->lci);
+ wpa_s->lci = NULL;
}
@@ -6340,6 +6343,147 @@ int wpas_rrm_send_neighbor_rep_request(struct wpa_supplicant *wpa_s,
}
+static struct wpabuf * wpas_rrm_build_lci_report(struct wpa_supplicant *wpa_s,
+ const u8 *request, size_t len,
+ struct wpabuf *report)
+{
+ u8 token, type, subject;
+ u16 max_age = 0;
+ struct os_reltime t, diff;
+ unsigned long diff_l;
+ u8 *ptoken;
+ const u8 *subelem;
+
+ if (!wpa_s->lci || len < 3 + 4)
+ return report;
+
+ token = *request++;
+ /* Measurement request mode isn't used */
+ request++;
+ type = *request++;
+ subject = *request++;
+
+ wpa_printf(MSG_DEBUG,
+ "Measurement request token %u type %u location subject %u",
+ token, type, subject);
+
+ if (type != MEASURE_TYPE_LCI || subject != LOCATION_SUBJECT_REMOTE) {
+ wpa_printf(MSG_INFO,
+ "Not building LCI report - bad type or location subject");
+ return report;
+ }
+
+ /* Subelements are formatted exactly like elements */
+ subelem = get_ie(request, len, LCI_REQ_SUBELEM_MAX_AGE);
+ if (subelem && subelem[1] == 2)
+ max_age = WPA_GET_LE16(subelem + 2);
+
+ if (os_get_reltime(&t))
+ return report;
+
+ os_reltime_sub(&t, &wpa_s->lci_time, &diff);
+ /* LCI age is calculated in 10th of a second units. */
+ diff_l = diff.sec * 10 + diff.usec / 100000;
+
+ if (max_age != 0xffff && max_age < diff_l)
+ return report;
+
+ if (wpabuf_resize(&report, 2 + wpabuf_len(wpa_s->lci)))
+ return report;
+
+ wpabuf_put_u8(report, WLAN_EID_MEASURE_REPORT);
+ wpabuf_put_u8(report, wpabuf_len(wpa_s->lci));
+ /* We'll override user's measurement token */
+ ptoken = wpabuf_put(report, 0);
+ wpabuf_put_buf(report, wpa_s->lci);
+ *ptoken = token;
+
+ return report;
+}
+
+
+void wpas_rrm_handle_radio_measurement_request(struct wpa_supplicant *wpa_s,
+ const u8 *src,
+ const u8 *frame, size_t len)
+{
+ struct wpabuf *buf, *report;
+ u8 token;
+ const u8 *ie, *end;
+
+ if (wpa_s->wpa_state != WPA_COMPLETED) {
+ wpa_printf(MSG_INFO,
+ "RRM: Ignoring radio measurement request: Not associated");
+ return;
+ }
+
+ if (!wpa_s->rrm.rrm_used) {
+ wpa_printf(MSG_INFO,
+ "RRM: Ignoring radio measurement request: Not RRM network");
+ return;
+ }
+
+ if (len < 3) {
+ wpa_printf(MSG_INFO,
+ "RRM: Ignoring too short radio measurement request");
+ return;
+ }
+
+ end = frame + len;
+
+ token = *frame++;
+
+ /* Ignore number of repetitions because it's not used in LCI request */
+ frame += 2;
+
+ report = NULL;
+ while ((ie = get_ie(frame, end - frame, WLAN_EID_MEASURE_REQUEST)) &&
+ ie[1] >= 3) {
+ u8 msmt_type;
+
+ msmt_type = ie[4];
+ wpa_printf(MSG_DEBUG, "RRM request %d", msmt_type);
+
+ switch (msmt_type) {
+ case MEASURE_TYPE_LCI:
+ report = wpas_rrm_build_lci_report(wpa_s, ie + 2, ie[1],
+ report);
+ break;
+ default:
+ wpa_printf(MSG_INFO,
+ "RRM: Unsupported radio measurement request %d",
+ msmt_type);
+ break;
+ }
+
+ frame = ie + ie[1] + 2;
+ }
+
+ if (!report)
+ return;
+
+ buf = wpabuf_alloc(3 + wpabuf_len(report));
+ if (!buf) {
+ wpabuf_free(report);
+ return;
+ }
+
+ wpabuf_put_u8(buf, WLAN_ACTION_RADIO_MEASUREMENT);
+ wpabuf_put_u8(buf, WLAN_RRM_RADIO_MEASUREMENT_REPORT);
+ wpabuf_put_u8(buf, token);
+
+ wpabuf_put_buf(buf, report);
+ wpabuf_free(report);
+
+ if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, src,
+ wpa_s->own_addr, wpa_s->bssid,
+ wpabuf_head(buf), wpabuf_len(buf), 0)) {
+ wpa_printf(MSG_ERROR,
+ "RRM: Radio measurement report failed: Sending Action frame failed");
+ }
+ wpabuf_free(buf);
+}
+
+
void wpas_rrm_handle_link_measurement_request(struct wpa_supplicant *wpa_s,
const u8 *src,
const u8 *frame, size_t len,
diff --git a/wpa_supplicant/wpa_supplicant_i.h b/wpa_supplicant/wpa_supplicant_i.h
index 211f4d1..e45f662 100644
--- a/wpa_supplicant/wpa_supplicant_i.h
+++ b/wpa_supplicant/wpa_supplicant_i.h
@@ -1058,6 +1058,13 @@ struct wpa_supplicant {
* the bss_temp_disallowed list for other purposes as well.
*/
struct dl_list bss_tmp_disallowed;
+
+ /*
+ * Content of a measurement report element with type 8 (LCI),
+ * own location.
+ */
+ struct wpabuf *lci;
+ struct os_reltime lci_time;
};
@@ -1168,6 +1175,9 @@ int wpas_rrm_send_neighbor_rep_request(struct wpa_supplicant *wpa_s,
void (*cb)(void *ctx,
struct wpabuf *neighbor_rep),
void *cb_ctx);
+void wpas_rrm_handle_radio_measurement_request(struct wpa_supplicant *wpa_s,
+ const u8 *src,
+ const u8 *frame, size_t len);
void wpas_rrm_handle_link_measurement_request(struct wpa_supplicant *wpa_s,
const u8 *src,
const u8 *frame, size_t len,