static int ieee80211_ioctl_siwscan(struct net_device *dev,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct iw_scan_req *req = NULL;
u8 *ssid = NULL;
size_t ssid_len = 0;
if (!netif_running(dev))
return -ENETDOWN;
if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT &&
sdata->vif.type != IEEE80211_IF_TYPE_AP)
return -EOPNOTSUPP;
/* if SSID was specified explicitly then use that */
if (wrqu->data.length == sizeof(struct iw_scan_req) &&
wrqu->data.flags & IW_SCAN_THIS_ESSID) {
req = (struct iw_scan_req *)extra;
ssid = req->essid;
ssid_len = req->essid_len;
}
return ieee80211_sta_req_scan(dev, ssid, ssid_len);
}
int wpa_supplicant_trigger_scan(struct wpa_supplicant *wpa_s,
struct wpa_driver_scan_params *params)
{
int ret;
wpa_supplicant_notify_scanning(wpa_s, 1);
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
ret = ieee80211_sta_req_scan(wpa_s, params);
else
ret = wpa_drv_scan(wpa_s, params);
if (ret) {
wpa_supplicant_notify_scanning(wpa_s, 0);
wpas_notify_scan_done(wpa_s, 0);
} else
wpa_s->scan_runs++;
return ret;
}
static void wpa_supplicant_scan(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
struct wpa_ssid *ssid;
int scan_req = 0, ret;
struct wpabuf *wps_ie = NULL;
const u8 *extra_ie = NULL;
size_t extra_ie_len = 0;
int wps = 0;
#ifdef CONFIG_WPS
enum wps_request_type req_type = WPS_REQ_ENROLLEE_INFO;
#endif /* CONFIG_WPS */
wpa_printf(MSG_DEBUG, "%s: scan_req = %d, ap_scan = %d", __func__,
wpa_s->scan_req, wpa_s->conf->ap_scan);
#if ICS_LEGACY_WLAN_SUPPORT
if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
wpa_printf(MSG_DEBUG, "Skip scan - interface disabled");
return;
}
#endif
if (wpa_s->disconnected && !wpa_s->scan_req) {
wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
return;
}
if (!wpa_supplicant_enabled_networks(wpa_s->conf) &&
!wpa_s->scan_req) {
wpa_printf(MSG_DEBUG, "No enabled networks - do not scan");
wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
return;
}
scan_req = wpa_s->scan_req;
wpa_s->scan_req = 0;
if (wpa_s->conf->ap_scan != 0 &&
wpa_s->driver && IS_WIRED(wpa_s->driver)) {
wpa_printf(MSG_DEBUG, "Using wired authentication - "
"overriding ap_scan configuration");
wpa_s->conf->ap_scan = 0;
}
if (wpa_s->conf->ap_scan == 0) {
wpa_supplicant_gen_assoc_event(wpa_s);
return;
}
if (wpa_s->wpa_state == WPA_DISCONNECTED ||
wpa_s->wpa_state == WPA_INACTIVE)
wpa_supplicant_set_state(wpa_s, WPA_SCANNING);
ssid = wpa_s->conf->ssid;
if (wpa_s->prev_scan_ssid != BROADCAST_SSID_SCAN) {
while (ssid) {
if (ssid == wpa_s->prev_scan_ssid) {
ssid = ssid->next;
break;
}
ssid = ssid->next;
}
}
while (ssid) {
//MTK_OP01_PROTECT_START
#ifdef CONFIG_CMCC_SUPPORT /* CMCC */
if (
#else
//MTK_OP01_PROTECT_END
if (!ssid->disabled &&
//MTK_OP01_PROTECT_START
#endif
//MTK_OP01_PROTECT_END
(ssid->scan_ssid || wpa_s->conf->ap_scan == 2))
break;
ssid = ssid->next;
}
if (scan_req != 2 && wpa_s->conf->ap_scan == 2) {
/*
* ap_scan=2 mode - try to associate with each SSID instead of
* scanning for each scan_ssid=1 network.
*/
if (ssid == NULL) {
wpa_printf(MSG_DEBUG, "wpa_supplicant_scan: Reached "
"end of scan list - go back to beginning");
wpa_s->prev_scan_ssid = BROADCAST_SSID_SCAN;
wpa_supplicant_req_scan(wpa_s, 0, 0);
return;
}
if (ssid->next) {
/* Continue from the next SSID on the next attempt. */
wpa_s->prev_scan_ssid = ssid;
} else {
/* Start from the beginning of the SSID list. */
wpa_s->prev_scan_ssid = BROADCAST_SSID_SCAN;
}
wpa_supplicant_associate(wpa_s, NULL, ssid);
return;
}
#ifdef CONFIG_WPS
wps = wpas_wps_in_use(wpa_s->conf, &req_type);
#endif /* CONFIG_WPS */
if (wpa_s->scan_res_tried == 0 && wpa_s->conf->ap_scan == 1 &&
!wpa_s->use_client_mlme && wps != 2) {
wpa_s->scan_res_tried++;
wpa_s->scan_req = scan_req;
wpa_printf(MSG_DEBUG, "Trying to get current scan results "
"first without requesting a new scan to speed up "
"initial association");
wpa_supplicant_event(wpa_s, EVENT_SCAN_RESULTS, NULL);
return;
}
#ifdef CONFIG_WPS
if (wps) {
wps_ie = wps_build_probe_req_ie(wps == 2, &wpa_s->wps->dev,
wpa_s->wps->uuid, req_type);
if (wps_ie) {
extra_ie = wpabuf_head(wps_ie);
extra_ie_len = wpabuf_len(wps_ie);
}
}
#endif /* CONFIG_WPS */
wpa_supplicant_notify_scanning(wpa_s, 1);
wpa_printf(MSG_DEBUG, "Starting AP scan (%s SSID)",
ssid ? "specific": "broadcast");
if (ssid) {
wpa_hexdump_ascii(MSG_DEBUG, "Scan SSID",
ssid->ssid, ssid->ssid_len);
wpa_s->prev_scan_ssid = ssid;
} else
wpa_s->prev_scan_ssid = BROADCAST_SSID_SCAN;
if (wpa_s->use_client_mlme) {
ieee80211_sta_set_probe_req_ie(wpa_s, extra_ie, extra_ie_len);
ret = ieee80211_sta_req_scan(wpa_s, ssid ? ssid->ssid : NULL,
ssid ? ssid->ssid_len : 0);
} else {
wpa_drv_set_probe_req_ie(wpa_s, extra_ie, extra_ie_len);
ret = wpa_drv_scan(wpa_s, &ssid);
}
wpabuf_free(wps_ie);
if (ret) {
wpa_printf(MSG_WARNING, "Failed to initiate AP scan.");
wpa_supplicant_notify_scanning(wpa_s, 0);
wpa_supplicant_req_scan(wpa_s, 10, 0);
} else {
wpa_s->scan_runs++;
}
}
static void wpa_supplicant_scan(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
struct wpa_ssid *ssid;
int enabled, scan_req = 0, ret;
const u8 *extra_ie = NULL;
size_t extra_ie_len = 0;
int scan_ssid_all = 1;
if (wpa_s->disconnected && !wpa_s->scan_req)
return;
enabled = 0;
/* check if all configured ssids should be scanned directly */
ssid = wpa_s->conf->ssid;
while (ssid) {
if (!ssid->scan_ssid) {
scan_ssid_all = 0;
break;
}
ssid = ssid->next;
}
ssid = wpa_s->conf->ssid;
while (ssid) {
if (!ssid->disabled) {
enabled++;
break;
}
ssid = ssid->next;
}
if (!enabled && !wpa_s->scan_req) {
wpa_printf(MSG_DEBUG, "No enabled networks - do not scan");
wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
return;
}
scan_req = wpa_s->scan_req;
wpa_s->scan_req = 0;
if (wpa_s->conf->ap_scan != 0 &&
wpa_s->driver && os_strcmp(wpa_s->driver->name, "wired") == 0) {
wpa_printf(MSG_DEBUG, "Using wired driver - overriding "
"ap_scan configuration");
wpa_s->conf->ap_scan = 0;
}
if (wpa_s->conf->ap_scan == 0) {
wpa_supplicant_gen_assoc_event(wpa_s);
return;
}
if (wpa_s->wpa_state == WPA_DISCONNECTED ||
wpa_s->wpa_state == WPA_INACTIVE)
wpa_supplicant_set_state(wpa_s, WPA_SCANNING);
ssid = wpa_s->conf->ssid;
if (wpa_s->prev_scan_ssid != BROADCAST_SSID_SCAN) {
while (ssid) {
if (ssid == wpa_s->prev_scan_ssid) {
ssid = ssid->next;
break;
}
ssid = ssid->next;
}
}
while (ssid) {
if (!ssid->disabled &&
(ssid->scan_ssid || wpa_s->conf->ap_scan == 2))
break;
ssid = ssid->next;
}
if (scan_req != 2 && wpa_s->conf->ap_scan == 2) {
/*
* ap_scan=2 mode - try to associate with each SSID instead of
* scanning for each scan_ssid=1 network.
*/
if (ssid == NULL) {
wpa_printf(MSG_DEBUG, "wpa_supplicant_scan: Reached "
"end of scan list - go back to beginning");
wpa_s->prev_scan_ssid = BROADCAST_SSID_SCAN;
wpa_supplicant_req_scan(wpa_s, 0, 0);
return;
}
if (ssid->next) {
/* Continue from the next SSID on the next attempt. */
wpa_s->prev_scan_ssid = ssid;
} else {
/* Start from the beginning of the SSID list. */
wpa_s->prev_scan_ssid = BROADCAST_SSID_SCAN;
}
wpa_supplicant_associate(wpa_s, NULL, ssid);
return;
}
if (scan_ssid_all && !ssid) {
ssid = wpa_s->conf->ssid;
}
wpa_printf(MSG_DEBUG, "Starting AP scan (%s SSID)",
ssid ? "specific": "broadcast");
if (ssid) {
wpa_hexdump_ascii(MSG_DEBUG, "Scan SSID",
ssid->ssid, ssid->ssid_len);
wpa_s->prev_scan_ssid = ssid;
} else
wpa_s->prev_scan_ssid = BROADCAST_SSID_SCAN;
if (!wpa_supplicant_may_scan(wpa_s) ||
(wpa_s->scan_res_tried == 0 && wpa_s->conf->ap_scan == 1 &&
!wpa_s->use_client_mlme)) {
wpa_s->scan_res_tried++;
wpa_printf(MSG_DEBUG, "Trying to get current scan results "
"first without requesting a new scan to speed up "
"initial association");
wpa_supplicant_event(wpa_s, EVENT_SCAN_RESULTS, NULL);
return;
}
wpa_drv_flush_pmkid(wpa_s);
if (wpa_s->use_client_mlme) {
ieee80211_sta_set_probe_req_ie(wpa_s, extra_ie, extra_ie_len);
ret = ieee80211_sta_req_scan(wpa_s, ssid ? ssid->ssid : NULL,
ssid ? ssid->ssid_len : 0);
} else {
wpa_drv_set_probe_req_ie(wpa_s, extra_ie, extra_ie_len);
ret = wpa_drv_scan(wpa_s, ssid ? ssid->ssid : NULL,
ssid ? ssid->ssid_len : 0);
}
if (ret) {
wpa_printf(MSG_WARNING, "Failed to initiate AP scan.");
wpa_supplicant_req_scan(wpa_s, 3, 0);
}
}
