params->only_new_results = 1;
}
ret = wpa_drv_scan(wpa_s, params);
+ /*
+ * Store the obtained vendor scan cookie (if any) in wpa_s context.
+ * The current design is to allow only one scan request on each
+ * interface, hence having this scan cookie stored in wpa_s context is
+ * fine for now.
+ *
+ * Revisit this logic if concurrent scan operations per interface
+ * is supported.
+ */
+ if (ret == 0)
+ wpa_s->curr_scan_cookie = params->scan_cookie;
wpa_scan_free_params(params);
work->ctx = NULL;
if (ret) {
#endif /* CONFIG_INTERWORKING */
+void wpa_supplicant_set_default_scan_ies(struct wpa_supplicant *wpa_s)
+{
+ struct wpabuf *default_ies = NULL;
+ u8 ext_capab[18];
+ int ext_capab_len;
+ enum wpa_driver_if_type type = WPA_IF_STATION;
+
+#ifdef CONFIG_P2P
+ if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT)
+ type = WPA_IF_P2P_CLIENT;
+#endif /* CONFIG_P2P */
+
+ wpa_drv_get_ext_capa(wpa_s, type);
+
+ ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab,
+ sizeof(ext_capab));
+ if (ext_capab_len > 0 &&
+ wpabuf_resize(&default_ies, ext_capab_len) == 0)
+ wpabuf_put_data(default_ies, ext_capab, ext_capab_len);
+
+#ifdef CONFIG_MBO
+ /* Send cellular capabilities for potential MBO STAs */
+ if (wpabuf_resize(&default_ies, 9) == 0)
+ wpas_mbo_scan_ie(wpa_s, default_ies);
+#endif /* CONFIG_MBO */
+
+ if (default_ies)
+ wpa_drv_set_default_scan_ies(wpa_s, wpabuf_head(default_ies),
+ wpabuf_len(default_ies));
+ wpabuf_free(default_ies);
+}
+
+
static struct wpabuf * wpa_supplicant_extra_ies(struct wpa_supplicant *wpa_s)
{
struct wpabuf *extra_ie = NULL;
unsigned int i;
struct wpa_ssid *ssid;
+ /*
+ * For devices with max_ssids greater than 1, leave the last slot empty
+ * for adding the wildcard scan entry.
+ */
+ max_ssids = max_ssids > 1 ? max_ssids - 1 : max_ssids;
+
for (i = 0; i < wpa_s->scan_id_count; i++) {
unsigned int j;
size_t max_ssids;
int connect_without_scan = 0;
- if (wpa_s->pno || wpa_s->pno_sched_pending) {
- wpa_dbg(wpa_s, MSG_DEBUG, "Skip scan - PNO is in progress");
- return;
- }
+ wpa_s->ignore_post_flush_scan_res = 0;
if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
wpa_dbg(wpa_s, MSG_DEBUG, "Skip scan - interface disabled");
return;
}
+ /*
+ * Don't cancel the scan based on ongoing PNO; defer it. Some scans are
+ * used for changing modes inside wpa_supplicant (roaming,
+ * auto-reconnect, etc). Discarding the scan might hurt these processes.
+ * The normal use case for PNO is to suspend the host immediately after
+ * starting PNO, so the periodic 100 ms attempts to run the scan do not
+ * normally happen in practice multiple times, i.e., this is simply
+ * restarting scanning once the host is woken up and PNO stopped.
+ */
+ if (wpa_s->pno || wpa_s->pno_sched_pending) {
+ wpa_dbg(wpa_s, MSG_DEBUG, "Defer scan - PNO is in progress");
+ wpa_supplicant_req_scan(wpa_s, 0, 100000);
+ return;
+ }
+
if (wpa_s->conf->ap_scan == 2)
max_ssids = 1;
else {
wpa_s->manual_scan_freqs = NULL;
}
+ if (params.freqs == NULL && wpa_s->select_network_scan_freqs) {
+ wpa_dbg(wpa_s, MSG_DEBUG,
+ "Limit select_network scan to specified channels");
+ params.freqs = wpa_s->select_network_scan_freqs;
+ wpa_s->select_network_scan_freqs = NULL;
+ }
+
if (params.freqs == NULL && wpa_s->next_scan_freqs) {
wpa_dbg(wpa_s, MSG_DEBUG, "Optimize scan based on previously "
"generated frequency list");
}
#endif /* CONFIG_P2P */
- if (wpa_s->mac_addr_rand_enable & MAC_ADDR_RAND_SCAN) {
+ if ((wpa_s->mac_addr_rand_enable & MAC_ADDR_RAND_SCAN) &&
+ wpa_s->wpa_state <= WPA_SCANNING) {
params.mac_addr_rand = 1;
if (wpa_s->mac_addr_scan) {
params.mac_addr = wpa_s->mac_addr_scan;
}
+static void
+wpa_scan_set_relative_rssi_params(struct wpa_supplicant *wpa_s,
+ struct wpa_driver_scan_params *params)
+{
+ if (wpa_s->wpa_state != WPA_COMPLETED ||
+ !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SCHED_SCAN_RELATIVE_RSSI) ||
+ wpa_s->srp.relative_rssi_set == 0)
+ return;
+
+ params->relative_rssi_set = 1;
+ params->relative_rssi = wpa_s->srp.relative_rssi;
+
+ if (wpa_s->srp.relative_adjust_rssi == 0)
+ return;
+
+ params->relative_adjust_band = wpa_s->srp.relative_adjust_band;
+ params->relative_adjust_rssi = wpa_s->srp.relative_adjust_rssi;
+}
+
+
/**
* wpa_supplicant_req_sched_scan - Start a periodic scheduled scan
* @wpa_s: Pointer to wpa_supplicant data
if (max_sched_scan_ssids < 1 || wpa_s->conf->disable_scan_offload)
return -1;
+ wpa_s->sched_scan_stop_req = 0;
+
if (wpa_s->sched_scanning) {
wpa_dbg(wpa_s, MSG_DEBUG, "Already sched scanning");
return 0;
wpa_setband_scan_freqs(wpa_s, scan_params);
- if (wpa_s->mac_addr_rand_enable & MAC_ADDR_RAND_SCHED_SCAN) {
+ if ((wpa_s->mac_addr_rand_enable & MAC_ADDR_RAND_SCHED_SCAN) &&
+ wpa_s->wpa_state <= WPA_SCANNING) {
params.mac_addr_rand = 1;
if (wpa_s->mac_addr_sched_scan) {
params.mac_addr = wpa_s->mac_addr_sched_scan;
}
}
+ wpa_scan_set_relative_rssi_params(wpa_s, scan_params);
+
ret = wpa_supplicant_start_sched_scan(wpa_s, scan_params);
wpabuf_free(extra_ie);
os_free(params.filter_ssids);
if (!wpa_s->sched_scanning)
return;
+ if (wpa_s->sched_scanning)
+ wpa_s->sched_scan_stop_req = 1;
+
wpa_dbg(wpa_s, MSG_DEBUG, "Cancelling sched scan");
eloop_cancel_timeout(wpa_supplicant_sched_scan_timeout, wpa_s, NULL);
wpa_supplicant_stop_sched_scan(wpa_s);
*/
const u8 * wpa_scan_get_ie(const struct wpa_scan_res *res, u8 ie)
{
- return get_ie((const u8 *) (res + 1), res->ie_len, ie);
+ size_t ie_len = res->ie_len;
+
+ /* Use the Beacon frame IEs if res->ie_len is not available */
+ if (!ie_len)
+ ie_len = res->beacon_ie_len;
+
+ return get_ie((const u8 *) (res + 1), ie_len, ie);
}
* This doc https://supportforums.cisco.com/docs/DOC-12954 says, "the general
* rule of thumb is that any SNR above 20 is good." This one
* http://www.cisco.com/en/US/tech/tk722/tk809/technologies_q_and_a_item09186a00805e9a96.shtml#qa23
- * recommends 25 as a minimum SNR for 54 Mbps data rate. 30 is chosen here as a
- * conservative value.
+ * recommends 25 as a minimum SNR for 54 Mbps data rate. The estimates used in
+ * scan_est_throughput() allow even smaller SNR values for the maximum rates
+ * (21 for 54 Mbps, 22 for VHT80 MCS9, 24 for HT40 and HT20 MCS7). Use 25 as a
+ * somewhat conservative value here.
*/
-#define GREAT_SNR 30
+#define GREAT_SNR 25
#define IS_5GHZ(n) (n > 4000)
}
/* if SNR is close, decide by max rate or frequency band */
- if ((snr_a && snr_b && abs(snr_b - snr_a) < 5) ||
- (wa->qual && wb->qual && abs(wb->qual - wa->qual) < 10)) {
+ if (snr_a && snr_b && abs(snr_b - snr_a) < 7) {
if (wa->est_throughput != wb->est_throughput)
return wb->est_throughput - wa->est_throughput;
+ }
+ if ((snr_a && snr_b && abs(snr_b - snr_a) < 5) ||
+ (wa->qual && wb->qual && abs(wb->qual - wa->qual) < 10)) {
if (IS_5GHZ(wa->freq) ^ IS_5GHZ(wb->freq))
return IS_5GHZ(wa->freq) ? -1 : 1;
}
}
#endif /* CONFIG_WPS */
- qsort(scan_res->res, scan_res->num, sizeof(struct wpa_scan_res *),
- compar);
+ if (scan_res->res) {
+ qsort(scan_res->res, scan_res->num,
+ sizeof(struct wpa_scan_res *), compar);
+ }
dump_scan_res(scan_res);
+ if (wpa_s->ignore_post_flush_scan_res) {
+ /* FLUSH command aborted an ongoing scan and these are the
+ * results from the aborted scan. Do not process the results to
+ * maintain flushed state. */
+ wpa_dbg(wpa_s, MSG_DEBUG,
+ "Do not update BSS table based on pending post-FLUSH scan results");
+ wpa_s->ignore_post_flush_scan_res = 0;
+ return scan_res;
+ }
+
wpa_bss_update_start(wpa_s);
for (i = 0; i < scan_res->num; i++)
wpa_bss_update_scan_res(wpa_s, scan_res->res[i],
params->p2p_probe = src->p2p_probe;
params->only_new_results = src->only_new_results;
params->low_priority = src->low_priority;
+ params->duration = src->duration;
+ params->duration_mandatory = src->duration_mandatory;
if (src->sched_scan_plans_num > 0) {
params->sched_scan_plans =
params->bssid = bssid;
}
+ params->relative_rssi_set = src->relative_rssi_set;
+ params->relative_rssi = src->relative_rssi;
+ params->relative_adjust_band = src->relative_adjust_band;
+ params->relative_adjust_rssi = src->relative_adjust_rssi;
return params;
failed:
return 0;
if ((wpa_s->wpa_state > WPA_SCANNING) &&
- (wpa_s->wpa_state <= WPA_COMPLETED)) {
+ (wpa_s->wpa_state < WPA_COMPLETED)) {
wpa_printf(MSG_ERROR, "PNO: In assoc process");
return -EAGAIN;
}
}
}
+ if (wpa_s->sched_scan_stop_req) {
+ wpa_printf(MSG_DEBUG,
+ "Schedule PNO after previous sched scan has stopped");
+ wpa_s->pno_sched_pending = 1;
+ return 0;
+ }
+
os_memset(¶ms, 0, sizeof(params));
num_ssid = num_match_ssid = 0;
params.freqs = wpa_s->manual_sched_scan_freqs;
}
- if (wpa_s->mac_addr_rand_enable & MAC_ADDR_RAND_PNO) {
+ if ((wpa_s->mac_addr_rand_enable & MAC_ADDR_RAND_PNO) &&
+ wpa_s->wpa_state <= WPA_SCANNING) {
params.mac_addr_rand = 1;
if (wpa_s->mac_addr_pno) {
params.mac_addr = wpa_s->mac_addr_pno;
}
}
+ wpa_scan_set_relative_rssi_params(wpa_s, ¶ms);
+
ret = wpa_supplicant_start_sched_scan(wpa_s, ¶ms);
os_free(params.filter_ssids);
if (ret == 0)
return 0;
ret = wpa_supplicant_stop_sched_scan(wpa_s);
+ wpa_s->sched_scan_stop_req = 1;
wpa_s->pno = 0;
wpa_s->pno_sched_pending = 0;
int wpas_abort_ongoing_scan(struct wpa_supplicant *wpa_s)
{
- int scan_work = !!wpa_s->scan_work;
+ struct wpa_radio_work *work;
+ struct wpa_radio *radio = wpa_s->radio;
-#ifdef CONFIG_P2P
- scan_work |= !!wpa_s->p2p_scan_work;
-#endif /* CONFIG_P2P */
-
- if (scan_work && wpa_s->own_scan_running) {
+ dl_list_for_each(work, &radio->work, struct wpa_radio_work, list) {
+ if (work->wpa_s != wpa_s || !work->started ||
+ (os_strcmp(work->type, "scan") != 0 &&
+ os_strcmp(work->type, "p2p-scan") != 0))
+ continue;
wpa_dbg(wpa_s, MSG_DEBUG, "Abort an ongoing scan");
- return wpa_drv_abort_scan(wpa_s);
+ return wpa_drv_abort_scan(wpa_s, wpa_s->curr_scan_cookie);
}
- return 0;
+ wpa_dbg(wpa_s, MSG_DEBUG, "No ongoing scan/p2p-scan found to abort");
+ return -1;
}
wpa_printf(MSG_ERROR, "invalid scan plans list");
return -1;
}
+
+
+/**
+ * wpas_scan_reset_sched_scan - Reset sched_scan state
+ * @wpa_s: Pointer to wpa_supplicant data
+ *
+ * This function is used to cancel a running scheduled scan and to reset an
+ * internal scan state to continue with a regular scan on the following
+ * wpa_supplicant_req_scan() calls.
+ */
+void wpas_scan_reset_sched_scan(struct wpa_supplicant *wpa_s)
+{
+ wpa_s->normal_scans = 0;
+ if (wpa_s->sched_scanning) {
+ wpa_s->sched_scan_timed_out = 0;
+ wpa_s->prev_sched_ssid = NULL;
+ wpa_supplicant_cancel_sched_scan(wpa_s);
+ }
+}
+
+
+void wpas_scan_restart_sched_scan(struct wpa_supplicant *wpa_s)
+{
+ /* simulate timeout to restart the sched scan */
+ wpa_s->sched_scan_timed_out = 1;
+ wpa_s->prev_sched_ssid = NULL;
+ wpa_supplicant_cancel_sched_scan(wpa_s);
+}
projects / thirdparty / hostap.git / blobdiff